These are representative sample records from Science.gov related to your search topic.
For comprehensive and current results, perform a real-time search at Science.gov.
1

The ATLAS hadronic tile calorimeter: from construction toward physics  

Microsoft Academic Search

The Tile Calorimeter, which constitutes the central section of the ATLAS hadronic calorimeter, is a non-compensating sampling device made of iron and scintillating tiles. The construction phase of the calorimeter is nearly complete, and most of the effort now is directed toward the final assembly and commissioning in the underground experimental hall. The layout of the calorimeter and the tasks

P. Adragna; C. Alexa; K. Anderson; A. Antonaki; V. Batusov; P. Bednar; S. Binet; C. Biscarat; G. Blanchot; A. Bogush; C. Bohm; V. Boldea; M. Bosman; C. Bromberg; J. Budagov; L. Caloba; D. Calvet; J. Carvalho; J. Castelo; M. V. Castillo; M. Cavalli Sforza; V. Cavasinni; A. S. Cerqueira; R. Chadelas; D. Costanzo; F. Cogswell; S. Constantinescu; M. Crouau; C. Cuenca; D. O. Damazio; F. Daudon; M. David; T. Davidek; K. de; T. Del Prete; B. Di Girolamo; S. Dita; J. Dolejsi; Z. Dolezal; A. Dotti; R. Downing; I. Efthymiopoulos; D. Errede; S. Errede; A. Farbin; D. Fassouliotis; I. Fedorko; A. Fenyuk; C. Ferdi; A. Ferrer; V. Flaminio; E. Fullana; V. Giakoumopoulou; O. Gildemeister; V. Giangiobbe; N. Giokaris; A. Gomes; V. Gonzalez; V. Grabsky; P. Grenier; P. Gris; V. Guarino; C. Guicheney; A. Gupta; H. Hakobyan; M. Haney; A. Henriques; E. Higon; S. Holmgren; M. Hurwitz; J. Huston; C. Iglesias; T. Junk; A. Karyukhin; J. Klereborn; I. Korolkov; P. Krivkova; Y. Kulchitsky; Yu. Kurochkin; P. Kuzhir; D. Lambert; T. Le Compte; R. Lefevre; R. Leitner; M. Lembesi; J. Li; M. Liablin; M. Lokajicek; Y. Lomakin; J. M. L. Amengual; A. Lupi; C. Maidantchik; A. Manousakis; S. Maliukov; C. Marques; F. Marroquim; F. Martin; E. Mazzoni; G. Montarou; F. Merritt; A. Miagkov; R. Miller; I. Minashvili; L. Miralles; S. Nemecek; M. Nessi; L. Nodulman; O. Norniella; A. Onofre; M. Oreglia; D. Pantea; D. Pallin; J. Pilcher; J. Pina; J. Pinhao; F. Podlyski; X. Portell; J. Poveda; L. E. Price; L. Pribyl; J. Proudfoot; M. Ramstedt; G. Reinmuth; R. Richards; C. Roda; V. Romanov; P. Rosnet; P. Roy; V. Rumiantsau; N. Russakovich; O. Salto; B. Salvachua; E. Sanchis; H. Sanders; C. Santoni; J. Schlereth; J. G. Saraiva; F. Sarri; I. Satsunkevitch; L.-P. Says; G. Schlager; J. M. Seixas; B. Sellden; P. Shevtsov; M. Shochet; P. Da Silva; J. Silva; V. Simaitis; A. Sissakian; A. Solodkov; O. Solovianov; M. Sosebee; F. Spano; R. Stanek; E. Starchenko; P. Starovoitov; M. Suk; I. Sykora; F. Tang; P. Tas; R. Teuscher; S. Tokar; N. Topilin; J. Torres; V. Tsulaia; D. Underwood; G. Usai; S. Valkar; J. A. Valls; A. Vartapetian; F. Vazeille; I. Vichou; V. Vinogradov; I. Vivarelli; M. Volpi; A. White; A. Zaitsev; A. Zenine; T. Zenis

2006-01-01

2

Results from a new combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter  

Microsoft Academic Search

A new combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the barrel calorimeter of the future ATLAS experiment at the LHC. The energy resolution of pions in the energy range from 10 to 300 GeV at an incident angle ? of about

S. Akhmadaliev; F. Albiol; P. Amaral; G. Ambrosini; A. Amorim; K. Anderson; M. L. Andrieux; B. Aubert; E. Augé; F. Badaud; L. Baisin; F. Barreiro; G. Battistoni; A. Bazan; K. Bazizi; C. Bee; J. Belorgey; A. Belymam; D. Benchekroun; S. Berglund; J. C. Berset; G. Blanchot; A. Bogush; C. Bohm; V. Boldea; W. Bonivento; P. Borgeaud; O. Borisov; M. Bosman; N. Bouhemaid; D. Breton; P. Brette; C. Bromberg; J. Budagov; S. Burdin; L. Caloba; F. Camarena; D. V. Camin; B. Canton; M. Caprini; J. Carvalho; P. Casado; R. Cases; M. V. Castillo; D. Cavalli; M. Cavalli-Sforza; V. Cavasinni; R. Chadelas; M. Chalifour; L. Chekhtman; J. L. Chevalley; I. Chirikov-Zorin; G. Chlachidze; J. C. Chollet; M. Citterio; W. E. Cleland; C. Clement; M. Cobal; F. Cogswell; J. Colas; J. Collot; S. Cologna; S. Constantinescu; G. Costa; D. Costanzo; J.-P. Coulon; M. Crouau; P. Dargent; F. Daudon; M. David; T. Davidek; J. Dawson; K. De; E. Delagnes; C. de la Taille; J. Del Peso; T. Del Prete; P. de Saintignon; B. Di Girolamo; B. Dinkespiller; S. Dita; F. Djama; J. Dodd; J. Dolejsi; Z. Dolezal; R. Downing; J.-J. Dugne; P.-Y. Duval; D. Dzahini; I. Efthymiopoulos; D. Errede; S. Errede; F. Etienne; H. Evans; G. Eynard; F. Farida; P. Fassnacht; N. Fedyakin; J. Fernandez De Troconiz; A. Ferrari; A. Ferrer; V. Flaminio; D. Fournier; G. Fumagalli; E. Gallas; G. Garcia; M. Gaspar; F. Gianotti; O. Gildemeister; V. Glagolev; V. Glebov; A. Gomes; V. Gonzalez; S. Gonzalez De La Hoz; A. Gordeev; H. A. Gordon; V. Grabsky; E. Grauges; Ph. Grenier; H. Hakopian; M. Haney; C. Hebrard; A. Henriques; F. Henry-Couannier; L. Hervas; E. Higon; S. Holmgren; J. Y. Hostachy; A. Hoummada; M. Huet; J. Huston; D. Imbault; Yu. Ivanyushenkov; Y. Jacquier; S. Jezequel; E. Johansson; R. Jones; A. Juste; S. Kakurin; P. Karst; A. Karyukhin; Yu. Khokhlov; J. Khubua; V. Klyukhin; G. Kolachev; V. Kolomoets; S. Kopikov; M. Kostrikov; V. Kovtun; V. Kozlov; P. Krivkova; V. Kukhtin; M. Kulagin; Y. Kulchitsky; M. Kuzmin; L. Labarga; G. Laborie; D. Lacour; S. Lami; V. Lapin; O. Le Dortz; M. Lefebvre; T. Leflour; R. Leitner; M. Leltchouk; A. Le Van Suu; J. Li; C. Liapis; O. Linossier; D. Lissauer; F. Lobkowicz; M. Lokajicek; Yu. Lomakin; O. Lomakina; J. M. Lopez Amengual; J.-P. Lottin; B. Lund-Jensen; J. Lundquist; A. Maio; D. Makowiecki; S. Malyukov; L. Mandelli; B. Mansoulié; L. Mapelli; C. P. Marin; P. Marrocchesi; F. Marroquin; L. Martin; O. Martin; Ph. Martin; A. Maslennikov; N. Massol; M. Mazzanti; E. Mazzoni; F. Merritt; B. Michel; R. Miller; I. Minashvili; L. Miralles; A. Mirea; E. Mnatsakanian; E. Monnier; G. Montarou; G. Mornacchi; M. Mosidze; M. Moynot; G. S. Muanza; E. Nagy; P. Nayman; S. Nemecek; M. Nessi; D. Nicod; S. Nicoleau; M. Niculescu; J. M. Noppe; A. Onofre; D. Pallin; D. Pantea; R. Paoletti; I. C. Park; G. Parrour; J. Parsons; J. Pascual; A. Pereira; L. Perini; J. A. Perlas; P. Perrodo; P. Pétroff; J. Pilcher; J. Pinhao; H. Plothow-Besch; L. Poggioli; S. Poirot; L. Price; Y. Protopopov; J. Proudfoot; O. Pukhov; P. Puzo; V. Radeka; D. Rahm; G. Reinmuth; J. F. Renardy; G. Renzoni; S. Rescia; S. Resconi; R. Richards; J.-P. Richer; I. Riu; C. Roda; J. Roldan; J. Romance; V. Romanov; P. Romero; N. Russakovich; P. Sala; E. Sanchis; H. Sanders; C. Santoni; J. Santos; D. Sauvage; G. Sauvage; A. Savoy-Navarro; L. Sawyer; L.-P. Says; A. Schaffer; P. Schwemling; J. Schwindling; N. Seguin-Moreau; W. Seidl; J. M. Seixas; B. Sellden; M. Seman; A. Semenov; V. Senchishin; L. Serin; E. Shaldaev; A. Shchelchkov; M. Shochet; V. Sidorov; J. Silva; V. Simaitis; S. Simion; A. Sissakian; I. Soloviev; R. Snopkov; J. Soderqvist; A. Solodkov; P. Sonderegger; K. Soustruznik; F. Spano; R. Spiwoks; R. Stanek; E. Starchenko; P. Stavina; R. Stephens; S. Studenov; M. Suk; A. Surkov; I. Sykora; J. P. Taguet; H. Takai; F. Tang; S. Tardell; P. Tas; J. Teiger; F. Teubert; J. Thaler; J. Thion; Y. Tikhonov; V. Tisserand; S. Tisserant; S. Tokar; N. Topilin; Z. Trka; M. Turcotte; S. Valkar; M. J. Varanda; A. Vartapetian; F. Vazeille; I. Vichou; P. Vincent; V. Vinogradov; S. Vorozhtsov; V. Vuillemin; C. Walter; A. White; M. Wielers; I. Wingerter-Seez; H. Wolters; N. Yamdagni; G. Yarygin; C. Yosef; A. Zaitsev; R. Zitoun; Y. P. Zolnierowski

2000-01-01

3

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter  

Microsoft Academic Search

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the barrel calorimeter of the future ATLAS experiment at the LHC. The energy resolution of pions in the energy range from 20 to 300 GeV at an incident angle ? of about

Z. Ajaltouni; F. Albiol; A. Alifanov; P. Amaral; G. Ambrosini; A. Amorim; K. Anderson; A. Astvatsaturov; B. Aubert; E. Augé; D. Autiero; G. Azuelos; F. Badaud; L. Baisin; G. Battistoni; A. Bazan; C. Bee; G. Bellettini; S. Berglund; J. C. Berset; C. Blaj; G. Blanchot; E. Blucher; A. Bogush; C. Bohm; V. Boldea; O. Borisov; M. Bosman; N. Bouhemaid; P. Brette; C. Bromberg; M. Brossard; J. Budagov; S. Buono; L. Caloba; D. V. Camin; B. Canton; P. Casado; D. Cavalli; M. Cavalli-Sforza; V. Cavasinni; R. Chadelas; R. Chase; A. Chekhtman; J.-C. Chevaleyre; J. L. Chevalley; I. Chirikov-Zorin; G. Chlachidze; J. C. Chollet; M. Cobal; F. Cogswell; J. Colas; J. Collot; S. Cologna; S. Constantinescu; G. Costa; D. Costanzo; L. Cozzi; M. Crouau; P. Dargent; F. Daudon; M. David; T. Davidek; J. Dawson; K. de; C. de la Taille; T. Del Prete; P. Depommier; P. de Saintignon; A. De Santo; B. Dinkespiller; B. Di Girolamo; S. Dita; J. Dolejsi; Z. Dolezal; R. Downing; J.-J. Dugne; P.-Y. Duval; D. Dzahini; I. Efthymiopoulos; D. Errede; S. Errede; F. Etienne; H. Evans; P. Fassnacht; N. Fedyakin; A. Ferrari; P. Ferreira; A. Ferrer; V. Flaminio; D. Fouchez; D. Fournier; G. Fumagalli; E. Gallas; M. Gaspar; F. Gianotti; O. Gildemeister; D. M. Gingrich; V. Glagolev; V. Golubev; A. Gomes; J. Gonzalez; H. A. Gordon; V. Grabsky; H. Hakopian; M. Haney; S. Hellman; A. Henriques; S. Holmgren; P. F. Honoré; J. Y. Hostachy; J. Huston; Yu. Ivanyushenkov; S. Jezequel; E. Johansson; R. Jones; A. Juste; S. Kakurin; G. Karapetian; A. Karyukhin; Yu. Khokhlov; V. Klyukhin; V. Kolomoets; S. Kopikov; M. Kostrikov; V. Kovtun; V. Kukhtin; M. Kulagin; Y. Kulchitsky; G. Laborie; S. Lami; V. Lapin; A. Lebedev; M. Lefebvre; T. Leflour; R. Leitner; E. León-Florián; C. Leroy; A. Le Van Suu; J. Li; I. Liba; O. Linossier; M. Lokajicek; Yu. Lomakin; O. Lomakina; B. Lund-Jensen; G. Mahout; A. Maio; S. Malyukov; L. Mandelli; B. Mansoulié; L. Mapelli; C. P. Marin; F. Marroquin; L. Martin; M. Mazzanti; E. Mazzoni; F. Merritt; B. Michel; R. Miller; I. Minashvili; A. Miotto; L. Miralles; E. Mnatsakanian; E. Monnier; G. Montarou; G. Mornacchi; G. S. Muanza; E. Nagy; S. Nemecek; M. Nessi; S. Nicoleau; J. M. Noppe; C. Olivetto; S. Orteu; C. Padilla; D. Pallin; D. Pantea; G. Parrour; A. Pereira; L. Perini; J. A. Perlas; P. Pétroff; J. Pilcher; J. L. Pinfold; H. Plothow-Besch; L. Poggioli; S. Poirot; G. Polesello; L. Price; Y. Protopopov; J. Proudfoot; O. Pukhov; V. Radeka; D. Rahm; G. Reinmuth; J. F. Renardy; G. Renzoni; S. Resconi; R. Richards; I. Riu; V. Romanov; B. Ronceux; V. Rumyantsev; N. Russakovich; P. Sala; H. Sanders; G. Sauvage; P. Savard; A. Savoy-Navarro; L. Sawyer; L.-P. Says; A. Schaffer; C. Scheel; P. Schwemling; J. Schwindling; N. Seguin-Moreau; J. M. Seixas; B. Sellden; M. Seman; A. Semenov; V. Senchishin; L. Serin; A. Shchelchkov; V. Shevtsov; M. Shochet; V. Sidorov; V. Simaitis; S. Simion; A. Sissakian; A. Solodkov; P. Sonderegger; K. Soustruznik; R. Stanek; E. Starchenko; D. Stephani; R. Stephens; S. Studenov; M. Suk; A. Surkov; F. Tang; S. Tardell; P. Tas; J. Teiger; F. Teubert; J. Thaler; V. Tisserand; S. Tisserant; S. Tokar; N. Topilin; Z. Trka; A. Turcot; M. Turcotte; S. Valkar; A. Vartapetian; F. Vazeille; I. Vichou; V. Vinogradov; S. Vorozhtsov; V. Vuillemin; D. Wagner; A. White; I. Wingerter-Seez; N. Yamdagni; G. Yarygin; C. Yosef; A. Zaitsev; M. Zdrazil; R. Zitoun; Y. P. Zolnierowski

1997-01-01

4

Results from a combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter  

Microsoft Academic Search

The first combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the barrel calorimeter of the future ATLAS experiment at the LHC. The energy resolution of pions in the energy range from 20 to 300~GeV at an incident angle $\\\\theta$ of about 11$^\\\\circ$

Ziad J Ajaltouni; F Albiol; A Alifanov; P Amaral; G Ambrosini; A Amorim; K J Anderson; A R Astvatsaturov; Bernard Aubert; E Augé; D Autiero; Georges Azuelos; F Badaud; L Baisin; G Battistoni; A Bazan; C P Bee; Giorgio Bellettini; S R Berglund; J C Berset; C Blaj; G Blanchot; E Blucher; A A Bogush; C Bohm; V Boldea; O N Borisov; M Bosman; N Bouhemaid; P Brette; C Bromberg; M Brossard; Yu A Budagov; S Buono; L P Calôba; D V Camin; B Canton; M P Casado; D Cavalli; M Cavalli-Sforza; V Cavasinni; R Chadelas; Robert L Chase; A Chekhtman; J C Chevaleyre; J L Chevalley; I E Chirikov-Zorin; G Chlachidze; J C Chollet; M Cobal; F Cogswell; Jacques Colas; J Collot; S Cologna; S Constantinescu; G Costa; D Costanzo; L Cozzi; M Crouau; P Dargent; F Daudon; M David; T Davidek; J Dawson; K De; C de La Taille; T Del Prete; P Depommier; P de Saintignon; A De Santo; B Dinkespiler; B Di Girolamo; S Dita; J Dolejsi; Z Dolezal; R Downing; J J Dugne; P Y Duval; D Dzahini; I Efthymiopoulos; D Errede; S Errede; F Etienne; H Evans; P Fassnacht; N N Fedyakin; A Ferrari; P Ferreira; A Ferrer; Vincenzo Flaminio; D Fouchez; D Fournier; G Fumagalli; E J Gallas; M Gaspar; F Gianotti; O Gildemeister; D M Gingrich; V V Glagolev; V B Golubev; A Gómez; J González; H A Gordon; V Grabskii; H H Hakopian; M Haney; S Hellman; A Henriques; S O Holmgren; P F Honoré; J Y Hostachy; J Huston; Yu M Ivanyushenkov; S Jézéquel; E K Johansson; R Jones; A Juste; S Kakurin; G V Karapetian; A N Karyukhin; Yu A Khokhlov; V I Klioukhine; V Kolomoets; S V Kopikov; M E Kostrikov; V E Kovtun; V V Kukhtin; M Kulagin; Yu A Kulchitskii; G Laborie; S Lami; V Lapin; A Lebedev; M Lefebvre; T Le Flour; R Leitner; E León-Florián; C Leroy; A Le Van-Suu; J Li; I Liba; O Linossier; M Lokajícek; Yu F Lomakin; O V Lomakina; B Lund-Jensen; G Mahout; A Maio; S N Malyukov; L Mandelli; B Mansoulié; Livio P Mapelli; C P Marin; F Marroquin; L Martin; M Mazzanti; E Mazzoni; F S Merritt; B Michel; R Miller; I A Minashvili; A Miotto; L Miralles; E A Mnatzakanian; E Monnier; G Montarou; Giuseppe Mornacchi; G S Muanza; E Nagy; S Némécek; Marzio Nessi; S Nicoleau; J M Noppe; C Olivetto; S Orteu; C Padilla; D Pallin; D Pantea; G Parrour; A Pereira; L Perini; J A Perlas; P Pétroff; J E Pilcher; James L Pinfold; Luc Poggioli; S Poirot; G Polesello; L Price; Yu Protopopov; J Proudfoot; O Pukhov; V Radeka; David Charles Rahm; G Reinmuth; J F Renardy; G Renzoni; S Resconi; R Richards; I Riu; V Romanov; B Ronceux; V Rumyantsev; N A Rusakovitch; P R Sala; H Sanders; G Sauvage; P Savard; Aurore Savoy-Navarro; L Sawyer; L P Says; A C Schaffer; C V Scheel; P Schwemling; J Schindling; N Seguin-Moreau; J M Seixas; B Selldén; M Seman; A A Semenov; V G Senchyshyn; L Serin; A S Shchelchkov; V P Shevtsov; M J Shochet; V Sidorov; V J Simaitis; S Simion; A N Sissakian; A A Solodkov; P Sonderegger; K Soustruznik; R Stanek; E A Starchenko; D Stephani; R Stephens; S Studenov; M Suk; A Surkov; F Tang; S Tardell; P Tas; J Teiger; F Teubert; J J Thaler; S Tisserant; S Tokár; N D Topilin; Z Trka; A S Turcot; M Turcotte; S Valkár; A H Vartapetian; F Vazeille; I Vichou; V Vinogradov; S B Vorozhtsov; V Vuillemin; D Wagner; Alan R White; I Wingerter-Seez; N Yamdagni; G Yarygin; C Yosef; A Zaitsev; M Zdrazil; R Zitoun; Y Zolnierowski

1996-01-01

5

Performance of the ATLAS Tile Hadronic Calorimeter at LHC in Run 1 and planned upgrades  

NASA Astrophysics Data System (ADS)

The Tile Calorimeter (TileCal) is the central section of the ATLAS hadronic calorimeter at the Large Hadron Collider, a key detector for the measurements of hadrons, jets, tau leptons and missing transverse energy. Scintillation light produced in the tiles is transmitted by wavelength shifting fibres to photomultiplier tubes (PMTs). The resulting electronic signals from approximately 10000 PMTs are digitized before being transferred to off-detector data-acquisition systems. The data quality procedures used during the LHC data-taking and the evolution of the detector status are explained in the presentation. The energy and the time reconstruction performance of the digitized signals is presented and the noise behaviour and its improvement during the detector consolidation in maintenance periods are shown. A set of calibration systems allow monitoring and equalization of the calorimeter channels responses via signal sources that act at every stage of the signal path, from scintillation light to digitized signal. These partially overlapping systems are described in detail, their individual performance is discussed as well as the comparative results from measurements of the evolution of the calorimeter response with time during the full LHC data-taking period. The TileCal upgrade aims at replacing the majority of the on- and off-detector electronics so that all calorimeter signals will be directly digitized and sent to the off-detector electronics in the counting room. To achieve the required reliability, redundancy has been introduced at different levels. For the off-detector electronics a special pre-processor board is being developed, which will take care of the initial trigger processing, while the main data are temporarily stored in the pipeline and de-randomiser memories.

Solovyanov, O.

2014-10-01

6

Results from a new combined test of an electromagnetic liquid argon calorimeter with a hadronic scintillating-tile calorimeter  

NASA Astrophysics Data System (ADS)

A new combined test of an electromagnetic liquid argon accordion calorimeter and a hadronic scintillating-tile calorimeter was carried out at the CERN SPS. These devices are prototypes of the barrel calorimeter of the future ATLAS experiment at the LHC. The energy resolution of pions in the energy range from 10 to 300 GeV at an incident angle ? of about 12° is well described by the expression ?/E=((41.9±1.6)%/ E+(1.8±0.1)%)?(1.8±0.1)/E , where E is in GeV. The response to electrons and muons was evaluated. Shower profiles, shower leakage and the angular resolution of hadronic showers were also studied. Results are compared with those from the previous beam test.

Akhmadaliev, S.; Albiol, F.; Amaral, P.; Ambrosini, G.; Amorim, A.; Anderson, K.; Andrieux, M. L.; Aubert, B.; Augé, E.; Badaud, F.; Baisin, L.; Barreiro, F.; Battistoni, G.; Bazan, A.; Bazizi, K.; Bee, C.; Belorgey, J.; Belymam, A.; Benchekroun, D.; Berglund, S.; Berset, J. C.; Blanchot, G.; Bogush, A.; Bohm, C.; Boldea, V.; Bonivento, W.; Borgeaud, P.; Borisov, O.; Bosman, M.; Bouhemaid, N.; Breton, D.; Brette, P.; Bromberg, C.; Budagov, J.; Burdin, S.; Caloba, L.; Camarena, F.; Camin, D. V.; Canton, B.; Caprini, M.; Carvalho, J.; Casado, P.; Cases, R.; Castillo, M. V.; Cavalli, D.; Cavalli-Sforza, M.; Cavasinni, V.; Chadelas, R.; Chalifour, M.; Chekhtman, L.; Chevalley, J. L.; Chirikov-Zorin, I.; Chlachidze, G.; Chollet, J. C.; Citterio, M.; Cleland, W. E.; Clement, C.; Cobal, M.; Cogswell, F.; Colas, J.; Collot, J.; Cologna, S.; Constantinescu, S.; Costa, G.; Costanzo, D.; Coulon, J.-P.; Crouau, M.; Dargent, P.; Daudon, F.; David, M.; Davidek, T.; Dawson, J.; de, K.; Delagnes, E.; de La Taille, C.; Del Peso, J.; Del Prete, T.; de Saintignon, P.; di Girolamo, B.; Dinkespiller, B.; Dita, S.; Djama, F.; Dodd, J.; Dolejsi, J.; Dolezal, Z.; Downing, R.; Dugne, J.-J.; Duval, P.-Y.; Dzahini, D.; Efthymiopoulos, I.; Errede, D.; Errede, S.; Etienne, F.; Evans, H.; Eynard, G.; Farida, F.; Fassnacht, P.; Fedyakin, N.; de Troconiz, J. Fernandez; Ferrari, A.; Ferrari, A.; Ferrer, A.; Flaminio, V.; Fournier, D.; Fumagalli, G.; Gallas, E.; Garcia, G.; Gaspar, M.; Gianotti, F.; Gildemeister, O.; Glagolev, V.; Glebov, V.; Gomes, A.; Gonzalez, V.; Gonzalez de La Hoz, S.; Gordeev, A.; Gordon, H. A.; Grabsky, V.; Grauges, E.; Grenier, Ph.; Hakopian, H.; Haney, M.; Hebrard, C.; Henriques, A.; Henry-Couannier, F.; Hervas, L.; Higon, E.; Holmgren, S.; Hostachy, J. Y.; Hoummada, A.; Huet, M.; Huston, J.; Imbault, D.; Ivanyushenkov, Yu.; Jacquier, Y.; Jezequel, S.; Johansson, E.; Jon-And, K.; Jones, R.; Juste, A.; Kakurin, S.; Karst, P.; Karyukhin, A.; Khokhlov, Yu.; Khubua, J.; Klyukhin, V.; Kolachev, G.; Kolomoets, V.; Kopikov, S.; Kostrikov, M.; Kovtun, V.; Kozlov, V.; Krivkova, P.; Kukhtin, V.; Kulagin, M.; Kulchitsky, Y.; Kuzmin, M.; Labarga, L.; Laborie, G.; Lacour, D.; Lami, S.; Lapin, V.; Le Dortz, O.; Lefebvre, M.; Leflour, T.; Leitner, R.; Leltchouk, M.; van Suu, A. Le; Li, J.; Liapis, C.; Linossier, O.; Lissauer, D.; Lobkowicz, F.; Lokajicek, M.; Lomakin, Yu.; Lomakina, O.; Amengual, J. M. Lopez; Lottin, J.-P.; Lund-Jensen, B.; Lundquist, J.; Maio, A.; Makowiecki, D.; Malyukov, S.; Mandelli, L.; Mansoulié, B.; Mapelli, L.; Marin, C. P.; Marrocchesi, P.; Marroquin, F.; Martin, L.; Martin, O.; Martin, Ph.; Maslennikov, A.; Massol, N.; Mazzanti, M.; Mazzoni, E.; Merritt, F.; Michel, B.; Miller, R.; Minashvili, I.; Miralles, L.; Mirea, A.; Mnatsakanian, E.; Monnier, E.; Montarou, G.; Mornacchi, G.; Mosidze, M.; Moynot, M.; Muanza, G. S.; Nagy, E.; Nayman, P.; Nemecek, S.; Nessi, M.; Nicod, D.; Nicoleau, S.; Niculescu, M.; Noppe, J. M.; Onofre, A.; Pallin, D.; Pantea, D.; Paoletti, R.; Park, I. C.; Parrour, G.; Parsons, J.; Pascual, J.; Pereira, A.; Perini, L.; Perlas, J. A.; Perrodo, P.; Pétroff, P.; Pilcher, J.; Pinhao, J.; Plothow-Besch, H.; Poggioli, L.; Poirot, S.; Price, L.; Protopopov, Y.; Proudfoot, J.; Pukhov, O.; Puzo, P.; Radeka, V.; Rahm, D.; Reinmuth, G.; Renardy, J. F.; Renzoni, G.; Rescia, S.; Resconi, S.; Richards, R.; Richer, J.-P.; Riu, I.; Roda, C.; Roldan, J.; Romance, J.; Romanov, V.; Romero, P.; Russakovich, N.; Sala, P.; Sanchis, E.; Sanders, H.; Santoni, C.; Santos, J.; Sauvage, D.; Sauvage, G.; Savoy-Navarro, A.; Sawyer, L.; Says, L.-P.; Schaffer, A.; Schwemling, P.; Schwindling, J.; Seguin-Moreau, N.; Seidl, W.; Seixas, J. M.; Sellden, B.; Seman, M.; Semenov, A.; Senchishin, V.; Serin, L.; Shaldaev, E.; Shchelchkov, A.; Shochet, M.; Sidorov, V.; Silva, J.; Simaitis, V.; Simion, S.; Sissakian, A.; Soloviev, I.; Snopkov, R.; Soderqvist, J.; Solodkov, A.; Sonderegger, P.; Soustruznik, K.; Spano', F.; Spiwoks, R.; Stanek, R.; Starchenko, E.; Stavina, P.; Stephens, R.; Studenov, S.; Suk, M.; Surkov, A.; Sykora, I.; Taguet, J. P.; Takai, H.; Tang, F.; Tardell, S.; Tas, P.; Teiger, J.; Teubert, F.; Thaler, J.; Thion, J.; Tikhonov, Y.; Tisserand, V.; Tisserant, S.; Tokar, S.; Topilin, N.; Trka, Z.; Turcotte, M.; Valkar, S.; Varanda, M. J.; Vartapetian, A.; Vazeille, F.; Vichou, I.; Vincent, P.; Vinogradov, V.; Vorozhtsov, S.; Vuillemin, V.; Walter, C.; White, A.; Wielers, M.; Wingerter-Seez, I.; Wolters, H.; Yamdagni, N.; Yarygin, G.; Yosef, C.; Zaitsev, A.; Zitoun, R.; Zolnierowski, Y. P.; ATLAS Collaboration (Calorimetry; Data Acquisition)

2000-07-01

7

In-situ probe of the response of the Tile Calorimeter to isolated hadrons  

NASA Astrophysics Data System (ADS)

The Tile calorimeter is the hadronic central barrel of the calorimeter system of the ATLAS experiment for the LHC at CERN. It is based on a sampling technique where scintillating tiles are embedded in iron absorber plates. The tiles are grouped together in cells which are disposed in three different layers. The cells from the two innermost layers cover a ?? × ?? range of 0.1 × 0.1, while the outermost layer covers 0.2 × 0.1. An in-situ method to probe the calorimeter response to single charged hadrons can be established by using the ratio of energy measured in the calorimeter cells over the momentum measured by the inner tracking system. This measurement can be used to place constraints on the systematic uncertainty for the jet and tau energy scales. Results from pp collision data from 2010 and 2011 will be shown and discussed as a function of different layer and barrel section. Finally, comparison to MC simulation will prove the good performance of the detector.

Jennens, D.

2014-06-01

8

Response of the ATLAS tile calorimeter prototype to muons  

Microsoft Academic Search

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300~GeV is presented. Both test beam experimental data and Monte Carlo simulations are given and show good agreement. The Tile calorimeter capability of detecting isolated muons over the above energy range is demonstrated. A signal to background

Ziad J Ajaltouni; F Albiol; A Alifanov; P Amaral; A Amorim; K J Anderson; C Angelini; A R Astvatsaturov; D Autiero; F Badaud; G Barreira; S R Berglund; G Blanchot; E Blucher; C Blaj; A A Bogush; C Bohm; V Boldea; O N Borisov; M Bosman; N Bouhemaid; P Brette; C Bromberg; M Brossard; Yu A Budagov; L P Calôba; J Carvalho; M P Casado; M Cavalli-Sforza; V Cavasinni; R Chadelas; J C Chevaleyre; I E Chirikov-Zorin; G Chlachidze; M Cobal; F Cogswell; F Colaço; S Constantinescu; D Costanzo; M Crouau; F Daudon; M David; T Davidek; J Dawson; J J Dugne; K De; T Del Prete; A De Santo; B Di Girolamo; S Dita; J Dolejsi; Z Dolezal; R Downing; I Efthymiopoulos; D Errede; S Errede; H Evans; A Ferrer; Vincenzo Flaminio; E J Gallas; M Gaspar; O Gildemeister; V V Glagolev; V B Golubev; A Gómez; V Grabskii; M Haney; H H Hakopian; S Hellman; A Henriques; S O Holmgren; P F Honoré; J Huston; Yu M Ivanyushenkov; E K Johansson; A Juste; S Kakurin; G V Karapetian; A N Karyukhin; Yu A Khokhlov; V I Klioukhine; V Kolomoets; S V Kopikov; M E Kostrikov; V E Kovtun; V V Kukhtin; M Kulagin; Yu A Kulchitskii; S Lami; V Lapin; C Lazzeroni; A Lebedev; R Leitner; J Li; I Liba; Yu F Lomakin; O V Lomakina; M Lokajícek; A Maio; S N Malyukov; F Marroquin; J P Martins; E Mazzoni; F S Merritt; B Michel; E Miller; I A Minashvili; L Miralles; E A Mnatzakanian; G Montarou; G S Muanza; S Némécek; Marzio Nessi; A Onofre; S Orteu; C Padilla; D Pallin; D Pantea; J Patriarca; A Pereira; J A Perlas; J E Pilcher; J Pinhão; Luc Poggioli; S Poirot; L Price; Yu Protopopov; J Proudfoot; O Pukhov; G Reinmuth; G Renzoni; R Richards; I Riu; V Romanov; B Ronceux; V Rumyantsev; N A Rusakovitch; H Sanders; J Santos; L Sawyer; L P Says; J M Seixas; B Selldén; A A Semenov; V G Senchyshyn; A S Shchelchkov; V P Shevtsov; M J Shochet; V Sidorov; V J Simaitis; A N Sissakian; A A Solodkov; P Sonderegger; K Soustruznik; R Stanek; E A Starchenko; R Stephens; S Studenov; M Suk; A Surkov; F Tang; S Tardell; P Tas; F Teubert; J J Thaler; S Tokár; N D Topilin; Z Trka; A S Turcot; M Turcotte; S Valkár; M J Varanda; A H Vartapetian; F Vazeille; V Vinogradov; S B Vorozhtsov; D Wagner; Alan R White; H Wolters; N Yamdagni; G Yarygin; C Yosef; A Zaitsev; M Zdrazil

1996-01-01

9

Response of the ATLAS Tile calorimeter prototype to muons  

Microsoft Academic Search

A study of high energy muons traversing the ATLAS hadron Tile calorimeter in the barrel region in the energy range between 10 and 300 GeV is presented. Both test beam experimental data and Monte Carlo simulations are given and show good agreement. The Tile calorimeter capability of detecting isolated muons over the above energy range is demonstrated. A signal to

Z. Ajaltouni; F. Albiol; A. Alifanov; P. Amaral; A. Amorim; K. Anderson; C. Angelini; A. Astvatsaturov; D. Autiero; F. Badaud; G. Barreira; S. Berglund; G. Blanchot; E. Blucher; C. Blaj; A. Bogush; C. Bohm; V. Boldea; O. Borisov; M. Bosman; N. Bouhemaid; P. Brette; C. Bromberg; M. Brossard; J. Budagov; L. Caloba; J. Carvalho; P. Casado; M. Cavalli-Sforza; V. Cavasinni; R. Chadelas; J.-C Chevaleyre; I. Chirikov-Zorin; G. Chlachidze; M. Cobal; F. Cogswell; F. Colaço; S. Constantinescu; D. Costanzo; M. Crouau; F. Daudon; M. David; T. Davidek; J. Dawson; J.-J. Dugne; K. de; T Del Prete; A De Santo; B Di Girolamo; S. Dita; J. Dolejsi; Z. Dolezal; R. Downing; I. Efthymiopoulos; D. Errede; S. Errede; H. Evans; A. Ferrer; V. Flaminio; E. Gallas; M. Gaspar; O. Gildemeister; V. Glagolev; V. Golubev; A. Gomes; V. Grabsky; M. Haney; H. Hakopian; S. Hellman; A. Henriques; S. Holmgren; P. F Honoré; J. Huston; Yu. Ivanyushenkov; E. Johansson; A. Juste; S. Kakurin; G. Karapetian; A. Karyukhin; Yu. Khokhlov; V. Klyukhin; V. Kolomoets; S. Kopikov; M. Kostrikov; V. Kovtun; V. Kukhtin; M. Kulagin; Y. Kulchitsky; S. Lami; V. Lapin; C. Lazzeroni; A. Lebedev; R. Leitner; J. Li; I. Liba; Yu. Lomakin; O. Lomakina; M. Lokajicek; A. Maio; S. Malyukov; F. Marroquin; J. P Martins; E. Mazzoni; F. Merritt; B. Michel; R. Miller; I. Minashvili; Ll. Miralles; E. Mnatsakanian; G. Montarou; G. S Muanza; S. Nemecek; M. Nessi; A. Onofre; S. Orteu; C. Padilla; D. Pallin; D. Pantea; J. Patriarca; A. Pereira; J. A Perlas; J. Pilcher; J. Pinhão; L. Poggioli; S. Poirot; L. Price; Y. Protopopov; J. Proudfoot; O. Pukhov; G. Reinmuth; G. Renzoni; R. Richards; I. Riu; V. Romanov; B. Ronceux; V. Rumyantsev; N. Russakovich; H. Sanders; J. Santos; L. Sawyer; L.-P Says; J. M Seixas; B. Sellden; A. Semenov; V. Senchishin; A. Shchelchkov; V. Shevtsov; M. Schochet; V. Sidorov; V. Simaitis; A. Sissakian; A. Solodkov; P. Sonderegger; K. Soustruznik; R. Stanek; E. Starchenko; R. Stephens; S. Studenov; M. Suk; A. Surkov; F. Tang; S. Tardell; P. Tas; F. Teubert; J. Thaler; S. Tokar; N. Topilin; Z. Trka; A. Turcot; M. Turcotte; S. Valkar; M. J Varandas; A. Vartapetian; F. Vazeille; V. Vinogradov; S. Vorozhtsov; D. Wagner; A. White; H. Wolters; N. Yamdagni; G. Yarygin; C. Yosef; A. Zaitsev; M. Zdrazil

1997-01-01

10

Testbeam studies of production modules of the ATLAS Tile Calorimeter  

Microsoft Academic Search

We report test beam studies of 11% of the production ATLAS Tile Calorimeter modules. The modules were equipped with production front-end electronics and all the calibration systems planned for the final detector. The studies used muon, electron and hadron beams ranging in energy from 3 to 350GeV.Two independent studies showed that the light yield of the calorimeter was ?70pe\\/GeV, exceeding

P. Adragna; C. Alexa; K. Anderson; A. Antonaki; A. Arabidze; L. Batkova; V. Batusov; H. P. Beck; P. Bednar; E. Bergeaas Kuutmann; C. Biscarat; G. Blanchot; A. Bogush; C. Bohm; V. Boldea; M. Bosman; C. Bromberg; J. Budagov; D. Burckhart-Chromek; M. Caprini; L. Caloba; D. Calvet; T. Carli; J. Carvalho; M. Cascella; J. Castelo; M. V. Castillo; M. Cavalli-Sforza; V. Cavasinni; A. S. Cerqueira; C. Clement; M. Cobal; F. Cogswell; S. Constantinescu; D. Costanzo; A. Corso-Radu; C. Cuenca; D. O. Damazio; M. David; T. Davidek; K. de; T. Del Prete; B. Di Girolamo; S. Dita; T. Djobava; M. Dobson; J. Dolejsi; Z. Dolezal; A. Dotti; R. Downing; I. Efthymiopoulos; D. Eriksson; D. Errede; S. Errede; A. Farbin; D. Fassouliotis; R. Febbraro; I. Fedorko; A. Fenyuk; C. Ferdi; A. Ferrer; V. Flaminio; D. Francis; E. Fullana; S. Gadomski; S. Gameiro; V. Garde; K. Gellerstedt; V. Giakoumopoulou; O. Gildemeister; V. Gilewsky; N. Giokaris; N. Gollub; A. Gomes; V. Gonzalez; B. Gorini; P. Grenier; P. Gris; M. Gruwe; V. Guarino; C. Guicheney; A. Gupta; C. Haeberli; H. Hakobyan; M. Haney; S. Hellman; A. Henriques; E. Higon; S. Holmgren; M. Hurwitz; J. Huston; C. Iglesias; A. Isaev; I. Jen-La Plante; M. Joos; T. Junk; A. Karyukhin; A. Kazarov; H. Khandanyan; J. Khramov; J. Khubua; S. Kolos; I. Korolkov; P. Krivkova; Y. Kulchitsky; Yu Kurochkin; P. Kuzhir; T. Le Compte; R. Lefevre; G. Lehmann; R. Leitner; M. Lembesi; J. Lesser; J. Li; M. Liablin; M. Lokajicek; Y. Lomakin; A. Lupi; C. Maidanchik; A. Maio; M. Makouski; S. Maliukov; A. Manousakis; L. Mapelli; C. Marques; F. Marroquim; F. Martin; E. Mazzoni; F. Merritt; A. Miagkov; R. Miller; I. Minashvili; L. Miralles; G. Montarou; M. Mosidze; A. Myagkov; S. Nemecek; M. Nessi; L. Nodulman; B. Nordkvist; O. Norniella; A. Onofre; M. Oreglia; D. Pallin; D. Pantea; J. Petersen; J. Pilcher; J. Pina; J. Pinhão; F. Podlyski; X. Portell; J. Poveda; L. Pribyl; L. E. Price; J. Proudfoot; M. Ramstedt; R. Richards; C. Roda; V. Romanov; P. Rosnet; P. Roy; A. Ruiz; V. Rumiantsev; N. Russakovich; O. Saltó; B. Salvachua; E. Sanchis; H. Sanders; C. Santoni; J. Santos; J. G. Saraiva; F. Sarri; I. Satsunkevitch; L.-P. Says; G. Schlager; J. Schlereth; J. M. Seixas; B. Selldèn; N. Shalanda; P. Shevtsov; M. Shochet; J. Silva; P. Da Silva; V. Simaitis; M. Simonyan; A. Sissakian; J. Sjölin; C. Solans; A. Solodkov; I. Soloviev; O. Solovyanov; M. Sosebee; F. Spanò; R. Stanek; E. Starchenko; P. Starovoitov; P. Stavina; M. Suk; I. Sykora; F. Tang; P. Tas; R. Teuscher; S. Tokar; N. Topilin; J. Torres; L. Tremblet; P. Tsiareshka; M. Tylmad; D. Underwood; G. Unel; G. Usai; A. Valero; S. Valkar; J. A. Valls; A. Vartapetian; F. Vazeille; I. Vichou; V. Vinogradov; I. Vivarelli; M. Volpi; A. White; A. Zaitsev; A. Zenine; T. Zenis

2009-01-01

11

Hadronic shower development in Iron-Scintillator Tile Calorimetry  

Microsoft Academic Search

The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter presents a unique longitudinal configuration of scintillator tiles. Using a fine-grained pion beam scan at 100GeV, a detailed picture of transverse shower behaviour is obtained. The underlying radial energy densities for the four depth segments and

P. Amaral; A. Amorim; K. Anderson; G. Barreira; R. Benetta; S. Berglund; C. Biscarat; G. Blanchot; E. Blucher; A A Bogush; C. Bohm; V. Boldea; O. Borisov; M. Bosman; C. Bromberg; J. Budagov; S. Burdin; L. Caloba; J. Carvalho; P. Casado; M. V. Castillo; M. Cavalli-Sforza; V. Cavasinni; R. Chadelas; I E Chirikov-Zorin; G. Chlachidze; M. Cobal; F. Cogswell; F. Colaço; S. Cologna; S. Constantinescu; D. Costanzo; M. Crouau; F. Daudon; J. David; M. David; T. Davidek; J. Dawson; K. De; T. Del Prete; A. De Santo; B. Di Girolamo; S. Dita; J. Dolejsi; Z. Dolezal; R. Downing; I. Efthymiopoulos; M. Engström; D. Errede; S. Errede; H. Evans; A. Fenyuk; A. Ferrer; V. Flaminio; E. Gallas; M. Gaspar; I. Gil; O. Gildemeister; V. Glagolev; A. Gomes; V. Gonzalez; S. González De La Hoz; V Grabskii; E Graugès-Pous; P. Grenier; H H Hakopian; M. Haney; M. Hansen; S. Hellman; A. Henriques; C. Hebrard; E. Higon; S O Holmgren; J. Huston; Yu M Ivanyushenkov; A. Juste; S. Kakurin; G V Karapetian; A N Karyukhin; S. Kopikov; V. Kukhtin; Y. Kulchitsky; W. Kurzbauer; M. Kuzmin; S. Lami; V. Lapin; C. Lazzeroni; A. Lebedev; R. Leitner; J. Li; Yu F Lomakin; O V Lomakina; M. Lokajicek; J. M. Lopez Amengual; A. Maio; S. Malyukov; F. Marroquin; J. P. Martins; E. Mazzoni; F S Merritt; R. Miller; I A Minashvili; Ll. Miralles; G. Montarou; A. Munar; S. Nemecek; Marzio Nessi; A. Onofre; S. Orteu; I. C. Park; D. Pallin; D. Pantea; R. Paoletti; J. Patriarca; A. Pereira; J. A. Perlas; P. Petit; J E Pilcher; L. Poggioli; L. Price; J. Proudfoot; O. Pukhov; G. Reinmuth; G. Renzoni; R. Richards; C. Roda; J. B. Romance; V. Romanov; B. Ronceux; P. Rosnet; V. Rumyantsev; N. Russakovich; E. Sanchis; H. Sanders; C. Santoni; J. Santos; L. Sawyer; L.-P. Says; J. M. Seixas; B. Selldèn; A. Semenov; A S Shchelchkov; M. Shochet; V. Simaitis; A N Sissakian; A. Solodkov; O. Solovianov; P. Sonderegger; M. Sosebee; K. Soustruznik; F. Spanó; R. Stanek; E A Starchenko; R. Stephens; M. Suk; F. Tang; P. Tas; J. Thaler; S. Tokar; N. Topilin; Z. Trka; A S Turcot; M. Turcotte; S. Valkar; M. J. Varandas; A H Vartapetian; F. Vazeille; I. Vichou; V. Vinogradov; S B Vorozhtsov; D. Wagner; A. White; H. Wolters; N. Yamdagni; G. Yarygin; C. Yosef; A. Zaitsev; M. Zdrazil

2000-01-01

12

The QCAL tile calorimeter of KLOE  

Microsoft Academic Search

The quadrupole tile calorimeters of KLOE (QCAL) are two compact detectors placed close to the interaction point and surrounding the focusing quadrupoles. Their purpose is to increase the hermeticity of KLOE calorimetry. Each QCAL consists of a sampling structure of lead plates and scintillator tiles with wavelength shifter (WLS) fibers and mesh photomultiplier readout arranged in 16 azimuthal sectors. The

M. Adinolfi; F. Ambrosino; M. Antonelli; C. Bini; V. Bocci; F. Bossi; P. Branchini; G. Cabibbo; R. Caloi; G. Carboni; M. Casarsa; G. Cataldi; P. Ciambrone; S. Conetti; E De Lucia; P De Simone; S Dell’ Agnello; A. Denig; A. Di Domenico; C. Di Donato; S Di Falco; A. Doria; A. Ferrari; G. Finocchiaro; C. Forti; A. Franceschi; P. Franzini; C. Gatti; P. Gauzzi; S. Giovannella; E. Graziani; M. Incagli; C. Kuo; G. Lanfranchi; M. Martemianov; W. Mei; R. Messi; S. Moccia; M. Moulson; S. Müller; C. T Murphy; F. Murtas; L. Pacciani; M. Palutan; E. Pasqualucci; L. Passalacqua; A. Passeri; D. Picca; G. Pirozzi; L. Pontecorvo; M. Primavera; E. Santovetti; G. Saracino; B. Sciascia; I. Sfiligoi; T. Spadaro; E. Spiriti; P. Valente; B. Valeriani; G. Venanzoni; A. Ventura

2002-01-01

13

Readiness of the ATLAS Tile Calorimeter for LHC collisions  

Microsoft Academic Search

The Tile hadronic calorimeter of the ATLAS detector has undergone extensive testing in the experimental hall since its installation\\u000a in late 2005. The readout, control and calibration systems have been fully operational since 2007 and the detector has successfully\\u000a collected data from the LHC single beams in 2008 and first collisions in 2009. This paper gives an overview of the

G. Aad; B. Abbott; J. Abdallah; A. A. Abdelalim; A. Abdesselam; O. Abdinov; B. Abi; M. Abolins; H. Abramowicz; H. Abreu; B. S. Acharya; D. L. Adams; T. N. Addy; J. Adelman; C. Adorisio; P. Adragna; T. Adye; S. Aefsky; J. A. Aguilar-Saavedra; M. Aharrouche; S. P. Ahlen; F. Ahles; A. Ahmad; M. Ahsan; G. Aielli; T. Akdogan; T. P. A. Åkesson; G. Akimoto; A. V. Akimov; A. Aktas; M. S. Alam; M. A. Alam; S. Albrand; M. Aleksa; I. N. Aleksandrov; C. Alexa; G. Alexander; G. Alexandre; T. Alexopoulos; M. Alhroob; M. Aliev; G. Alimonti; J. Alison; M. Aliyev; P. P. Allport; S. E. Allwood-Spiers; J. Almond; A. Aloisio; R. Alon; A. Alonso; M. G. Alviggi; K. Amako; C. Amelung; A. Amorim; G. Amorós; N. Amram; C. Anastopoulos; T. Andeen; C. F. Anders; K. J. Anderson; A. Andreazza; V. Andrei; X. S. Anduaga; A. Angerami; F. Anghinolfi; N. Anjos; A. Annovi; A. Antonaki; M. Antonelli; S. Antonelli; J. Antos; B. Antunovic; F. Anulli; S. Aoun; G. Arabidze; I. Aracena; Y. Arai; A. T. H. Arce; J. P. Archambault; S. Arfaoui; J.-F. Arguin; T. Argyropoulos; M. Arik; A. J. Armbruster; O. Arnaez; C. Arnault; A. Artamonov; D. Arutinov; M. Asai; S. Asai; R. Asfandiyarov; S. Ask; B. Åsman; D. Asner; L. Asquith; K. Assamagan; A. Astvatsatourov; G. Atoian; B. Auerbach; K. Augsten; M. Aurousseau; N. Austin; G. Avolio; R. Avramidou; C. Ay; G. Azuelos; Y. Azuma; M. A. Baak; A. M. Bach; H. Bachacou; K. Bachas; M. Backes; E. Badescu; P. Bagnaia; Y. Bai; T. Bain; J. T. Baines; O. K. Baker; M. D. Baker; S. Baker; F. Baltasar Dos Santos Pedrosa; E. Banas; P. Banerjee; S. Banerjee; D. Banfi; A. Bangert; V. Bansal; S. P. Baranov; A. Barashkou; T. Barber; E. L. Barberio; D. Barberis; M. Barbero; D. Y. Bardin; T. Barillari; M. Barisonzi; T. Barklow; N. Barlow; B. M. Barnett; R. M. Barnett; A. Baroncelli; A. J. Barr; F. Barreiro; P. Barrillon; R. Bartoldus; D. Bartsch; R. L. Bates; L. Batkova; J. R. Batley; A. Battaglia; M. Battistin; F. Bauer; H. S. Bawa; M. Bazalova; B. Beare; T. Beau; P. H. Beauchemin; R. Beccherle; P. Bechtle; G. A. Beck; H. P. Beck; M. Beckingham; K. H. Becks; A. J. Beddall; V. A. Bednyakov; C. Bee; M. Begel; S. Behar Harpaz; P. K. Behera; M. Beimforde; C. Belanger-Champagne; P. J. Bell; W. H. Bell; G. Bella; L. Bellagamba; F. Bellina; M. Bellomo; A. Belloni; K. Belotskiy; O. Beltramello; S. Ben Ami; O. Benary; D. Benchekroun; M. Bendel; B. H. Benedict; N. Benekos; Y. Benhammou; D. P. Benjamin; M. Benoit; J. R. Bensinger; K. Benslama; S. Bentvelsen; M. Beretta; D. Berge; E. Bergeaas Kuutmann; N. Berger; F. Berghaus; E. Berglund; J. Beringer; P. Bernat; R. Bernhard; C. Bernius; T. Berry; A. Bertin; M. I. Besana; N. Besson; S. Bethke; R. M. Bianchi; M. Bianco; O. Biebel; J. Biesiada; M. Biglietti; H. Bilokon; M. Bindi; A. Bingul; C. Bini; C. Biscarat; U. Bitenc; K. M. Black; R. E. Blair; J.-B. Blanchard; G. Blanchot; C. Blocker; A. Blondel; W. Blum; U. Blumenschein; G. J. Bobbink; A. Bocci; M. Boehler; J. Boek; N. Boelaert; S. Böser; J. A. Bogaerts; A. Bogouch; C. Bohm; J. Bohm; V. Boisvert; T. Bold; V. Boldea; V. G. Bondarenko; M. Bondioli; M. Boonekamp; S. Bordoni; C. Borer; A. Borisov; G. Borissov; I. Borjanovic; S. Borroni; K. Bos; D. Boscherini; M. Bosman; H. Boterenbrood; J. Bouchami; J. Boudreau; E. V. Bouhova-Thacker; C. Boulahouache; C. Bourdarios; A. Boveia; J. Boyd; I. R. Boyko; I. Bozovic-Jelisavcic; J. Bracinik; A. Braem; P. Branchini; A. Brandt; G. Brandt; O. Brandt; U. Bratzler; B. Brau; J. E. Brau; H. M. Braun; B. Brelier; J. Bremer; R. Brenner; S. Bressler; D. Britton; F. M. Brochu; I. Brock; R. Brock; E. Brodet; C. Bromberg; G. Brooijmans; W. K. Brooks; G. Brown; D. Bruncko; R. Bruneliere; S. Brunet; A. Bruni; G. Bruni; M. Bruschi; F. Bucci; J. Buchanan; P. Buchholz; A. G. Buckley; I. A. Budagov; B. Budick; V. Büscher; L. Bugge; O. Bulekov; M. Bunse; T. Buran; H. Burckhart; S. Burdin; T. Burgess; S. Burke; E. Busato; P. Bussey; C. P. Buszello; F. Butin; B. Butler; J. M. Butler; C. M. Buttar; J. M. Butterworth; T. Byatt; J. Caballero; S. Cabrera Urbán; D. Caforio; O. Cakir; P. Calafiura; G. Calderini; P. Calfayan; R. Calkins; L. P. Caloba; D. Calvet; P. Camarri; D. Cameron; S. Campana; M. Campanelli; V. Canale; F. Canelli; A. Canepa; J. Cantero; L. Capasso; M. D. M. Capeans Garrido; I. Caprini; M. Caprini; M. Capua; R. Caputo; C. Caramarcu; R. Cardarelli; T. Carli; G. Carlino; L. Carminati; B. Caron; S. Caron; G. D. Carrillo Montoya; S. Carron Montero; A. A. Carter; J. R. Carter; J. Carvalho; D. Casadei; M. P. Casado; M. Cascella; A. M. Castaneda Hernandez; E. Castaneda-Miranda; V. Castillo Gimenez; N. F. Castro; G. Cataldi; A. Catinaccio; J. R. Catmore; A. Cattai; G. Cattani; S. Caughron; P. Cavalleri; D. Cavalli; M. Cavalli-Sforza; V. Cavasinni; F. Ceradini; A. S. Cerqueira; A. Cerri; L. Cerrito; F. Cerutti; S. A. Cetin; A. Chafaq; D. Chakraborty; K. Chan

2010-01-01

14

Comparative study of WLS fibres for the ATLAS Tile Calorimeter  

NASA Astrophysics Data System (ADS)

The Wave Length Shifting (WLS) fibres are one of the most important components of the ATLAS barrel hadronic tile calorimeter (Tilecal). The fibres collect the hght produced in the injection molded scintillating tiles and transport it to the photomultipliers. Parameters like attenuation length and light yield are important, as well as flexibility and radiation hardness. Comparative results of WLS fibres produced by Bicron, Kuraray and Pol.Hi.Tech are presented. The performance of the fibres BCF91A from Bicron and S048 from Pol.Hi.Tech was significatively improved, but the most performant are still the double clad Y11 fibres from Kuraray.

Gomes, A.; David, M.; Henriques, A.; Maio, A.

1998-02-01

15

Comparative study of WLS fibres for the ATLAS tile calorimeter  

NASA Astrophysics Data System (ADS)

The Wave Length Shifting (WLS) fibres are one of the most important components of the ATLAS barrel hadronic tile calorimeter (Tilecal). The fibres collect the light produced in the injection molded scintillating tiles and transport it to the photomultipliers. Parameters like attenuation length and light yield are important, as well as flexibility and radiation hardness. Comparative results of WLS fibres produced by Bicron, Kuraray and Pol.Hi.Tech are presented. The performance of the fibres BCF91A from Bicron and S048 from Pol.Hi.Tech was significatively improved, but the most performant are still the double clad Y11 fibres from Kuraray.

Gomes, A.; David, M.; Henriques, A.; Maio, A.

1997-02-01

16

Readiness of the ATLAS Tile Calorimeter for LHC collisions  

NASA Astrophysics Data System (ADS)

The Tile hadronic calorimeter of the ATLAS detector has undergone extensive testing in the experimental hall since its installation in late 2005. The readout, control and calibration systems have been fully operational since 2007 and the detector has successfully collected data from the LHC single beams in 2008 and first collisions in 2009. This paper gives an overview of the Tile Calorimeter performance as measured using random triggers, calibration data, data from cosmic ray muons and single beam data. The detector operation status, noise characteristics and performance of the calibration systems are presented, as well as the validation of the timing and energy calibration carried out with minimum ionising cosmic ray muons data. The calibration systems' precision is well below the design value of 1%. The determination of the global energy scale was performed with an uncertainty of 4%.

Aad, G.; Abbott, B.; Abdallah, J.; Abdelalim, A. A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abramowicz, H.; Abreu, H.; Acharya, B. S.; Adams, D. L.; Addy, T. N.; Adelman, J.; Adorisio, C.; Adragna, P.; Adye, T.; Aefsky, S.; Aguilar-Saavedra, J. A.; Aharrouche, M.; Ahlen, S. P.; Ahles, F.; Ahmad, A.; Ahsan, M.; Aielli, G.; Akdogan, T.; Åkesson, T. P. A.; Akimoto, G.; Akimov, A. V.; Aktas, A.; Alam, M. S.; Alam, M. A.; Albrand, S.; Aleksa, M.; Aleksandrov, I. N.; Alexa, C.; Alexander, G.; Alexandre, G.; Alexopoulos, T.; Alhroob, M.; Aliev, M.; Alimonti, G.; Alison, J.; Aliyev, M.; Allport, P. P.; Allwood-Spiers, S. E.; Almond, J.; Aloisio, A.; Alon, R.; Alonso, A.; Alviggi, M. G.; Amako, K.; Amelung, C.; Amorim, A.; Amorós, G.; Amram, N.; Anastopoulos, C.; Andeen, T.; Anders, C. F.; Anderson, K. J.; Andreazza, A.; Andrei, V.; Anduaga, X. S.; Angerami, A.; Anghinolfi, F.; Anjos, N.; Annovi, A.; Antonaki, A.; Antonelli, M.; Antonelli, S.; Antos, J.; Antunovic, B.; Anulli, F.; Aoun, S.; Arabidze, G.; Aracena, I.; Arai, Y.; Arce, A. T. H.; Archambault, J. P.; Arfaoui, S.; Arguin, J.-F.; Argyropoulos, T.; Arik, M.; Armbruster, A. J.; Arnaez, O.; Arnault, C.; Artamonov, A.; Arutinov, D.; Asai, M.; Asai, S.; Asfandiyarov, R.; Ask, S.; Åsman, B.; Asner, D.; Asquith, L.; Assamagan, K.; Astvatsatourov, A.; Atoian, G.; Auerbach, B.; Augsten, K.; Aurousseau, M.; Austin, N.; Avolio, G.; Avramidou, R.; Ay, C.; Azuelos, G.; Azuma, Y.; Baak, M. A.; Bach, A. M.; Bachacou, H.; Bachas, K.; Backes, M.; Badescu, E.; Bagnaia, P.; Bai, Y.; Bain, T.; Baines, J. T.; Baker, O. K.; Baker, M. D.; Baker, S.; Baltasar Dos Santos Pedrosa, F.; Banas, E.; Banerjee, P.; Banerjee, S.; Banfi, D.; Bangert, A.; Bansal, V.; Baranov, S. P.; Barashkou, A.; Barber, T.; Barberio, E. L.; Barberis, D.; Barbero, M.; Bardin, D. Y.; Barillari, T.; Barisonzi, M.; Barklow, T.; Barlow, N.; Barnett, B. M.; Barnett, R. M.; Baroncelli, A.; Barr, A. J.; Barreiro, F.; Barreiro Guimarães da Costa, J.; Barrillon, P.; Bartoldus, R.; Bartsch, D.; Bates, R. L.; Batkova, L.; Batley, J. R.; Battaglia, A.; Battistin, M.; Bauer, F.; Bawa, H. S.; Bazalova, M.; Beare, B.; Beau, T.; Beauchemin, P. H.; Beccherle, R.; Bechtle, P.; Beck, G. A.; Beck, H. P.; Beckingham, M.; Becks, K. H.; Beddall, A. J.; Beddall, A.; Bednyakov, V. A.; Bee, C.; Begel, M.; Behar Harpaz, S.; Behera, P. K.; Beimforde, M.; Belanger-Champagne, C.; Bell, P. J.; Bell, W. H.; Bella, G.; Bellagamba, L.; Bellina, F.; Bellomo, M.; Belloni, A.; Belotskiy, K.; Beltramello, O.; Ben Ami, S.; Benary, O.; Benchekroun, D.; Bendel, M.; Benedict, B. H.; Benekos, N.; Benhammou, Y.; Benjamin, D. P.; Benoit, M.; Bensinger, J. R.; Benslama, K.; Bentvelsen, S.; Beretta, M.; Berge, D.; Bergeaas Kuutmann, E.; Berger, N.; Berghaus, F.; Berglund, E.; Beringer, J.; Bernat, P.; Bernhard, R.; Bernius, C.; Berry, T.; Bertin, A.; Besana, M. I.; Besson, N.; Bethke, S.; Bianchi, R. M.; Bianco, M.; Biebel, O.; Biesiada, J.; Biglietti, M.; Bilokon, H.; Bindi, M.; Bingul, A.; Bini, C.; Biscarat, C.; Bitenc, U.; Black, K. M.; Blair, R. E.; Blanchard, J.-B.; Blanchot, G.; Blocker, C.; Blondel, A.; Blum, W.; Blumenschein, U.; Bobbink, G. J.; Bocci, A.; Boehler, M.; Boek, J.; Boelaert, N.; Böser, S.; Bogaerts, J. A.; Bogouch, A.; Bohm, C.; Bohm, J.; Boisvert, V.; Bold, T.; Boldea, V.; Bondarenko, V. G.; Bondioli, M.; Boonekamp, M.; Bordoni, S.; Borer, C.; Borisov, A.; Borissov, G.; Borjanovic, I.; Borroni, S.; Bos, K.; Boscherini, D.; Bosman, M.; Boterenbrood, H.; Bouchami, J.; Boudreau, J.; Bouhova-Thacker, E. V.; Boulahouache, C.; Bourdarios, C.; Boveia, A.; Boyd, J.; Boyko, I. R.; Bozovic-Jelisavcic, I.; Bracinik, J.; Braem, A.; Branchini, P.; Brandt, A.; Brandt, G.; Brandt, O.; Bratzler, U.; Brau, B.; Brau, J. E.; Braun, H. M.; Brelier, B.; Bremer, J.; Brenner, R.; Bressler, S.; Britton, D.; Brochu, F. M.; Brock, I.; Brock, R.; Brodet, E.; Bromberg, C.; Brooijmans, G.; Brooks, W. K.; Brown, G.; Bruckman de Renstrom, P. A.; Bruncko, D.; Bruneliere, R.; Brunet, S.; Bruni, A.; Bruni, G.; Bruschi, M.; Bucci, F.; Buchanan, J.; Buchholz, P.; Buckley, A. G.; Budagov, I. A.; Budick, B.; Büscher, V.; Bugge, L.; Bulekov, O.; Bunse, M.; Buran, T.; Burckhart, H.; Burdin, S.; Burgess, T.; Burke, S.; Busato, E.; Bussey, P.; Buszello, C. P.; Butin, F.; Butler, B.; Butler, J. M.; Buttar, C. M.; Butterworth, J. M.; Byatt, T.; Caballero, J.; Cabrera Urbán, S.; Caforio, D.; Cakir, O.; Calafiura, P.; Calderini, G.; Calfayan, P.; Calkins, R.; Caloba, L. P.; Calvet, D.; Camarri, P.; Cameron, D.; Campana, S.; Campanelli, M.; Canale, V.; Canelli, F.; Canepa, A.; Cantero, J.; Capasso, L.; Capeans Garrido, M. D. M.; Caprini, I.; Caprini, M.; Capua, M.; Caputo, R.; Caramarcu, C.; Cardarelli, R.; Carli, T.; Carlino, G.; Carminati, L.

2010-12-01

17

The segmentation of hadron calorimeters  

NASA Astrophysics Data System (ADS)

Optimization of the segmentation of large hadron calorimeters is important in order to obtain good resolution for jet physics at minimum construction cost for the next generation of high energy experiments. The principles of the segmentation of hadron calorimeters are discussed. As an example, the Monte Carlo optimization of the segmentation of the L3 hadron calorimeter barrel at CERN is described. Comparisons of results for the reconstructed jet shapes show that the optimum number ADC channels is about 20K for the readout of 450K wires of the proportional chambers. The matching between the sandwiched ? towers and Z towers is the dominant factor for angular resolution. Based on these Monte Carlo simulations, an optimized tower structure is obtained.

Chen, He Sheng

1987-05-01

18

Identification of Low PT Muon with the Atlas Tile Calorimeter  

Microsoft Academic Search

A method for the identification of muons with the ATLAS Tile Calorimeter is presented and its efficiency and mis-tagging fraction are discussed. It is demonstrated that the Tile Calorimeter can identify muons with good efficiency down to 2 GeV\\/c transverse momentum, where the stand-alone Muon Spectrometer has zero efficiency. This kinematic region is important for study of B meson physics

G. Usai

2005-01-01

19

Hadronic Showers in a Highly Granular Imaging Calorimeter  

NASA Astrophysics Data System (ADS)

The CALICE collaboration develops highly granular calorimeter prototypes to evaluate technologies for experiments at a future lepton collider. The analogue hadronic calorimeter prototype consists of steel absorber plates interleaved with 38 active plastic scintillator layers which are sub-divided into small tiles. In total 7608 tiles are read out individually via embedded Silicon Photomultipliers. The prototype is one of the ?rst large scale applications of these novel and very promising miniature photodetectors. Since 2006, the calorimeter has been operated in combined test beam setups at DESY, CERN and FNAL. The high-resolution 3D image data with analogue energy information are used to study properties and composition of hadronic showers at a new level of detail. This helps to constrain hadronic shower models through comparisons with model calculations. The spatial shower development and the substructure of the showers, compared to a variety of different Geant 4 shower models including decompositions into individual shower components are presented. Aspects of the energy reconstruction of hadronic showers, such as Particle Flow, are discussed.

Kaplan, A.; The Calice Collaboration

20

Machining of scintillator tiles for the SDC calorimeter  

Microsoft Academic Search

This research and development on the grooving methods for the scintillating tiles of the SDC calorimeter was done to maximize the light output of scintillator plates and improve the uniformity among tiles through machining procedures. Grooves for wavelength shifting fibers in SCSN-81 can be machined from 10,000 to 60,000 RPM with a feed rate of more than 30 cm\\/min if

M. Bertoldi; E. Bartosz; C. Davis; V. Hagopian; E. Hernandez; K. Hu; C. Immer; J. Thomaston

1993-01-01

21

The high resolution spaghetti hadron calorimeter  

NASA Astrophysics Data System (ADS)

It is proposed to build a prototype for a hadron calorimeter with scintillating plastic fibers as active material. The absorber material is lead. Provided that these components are used in the appropriate volume ratio, excellent performance may be expected, e.g., an energy resolution of 30%/rtE for jet detection. The proposed design offers additional advantages compared to the classical sandwich calorimeter structures in terms of granularity, hermiticity, uniformity, compactness, readout, radiation resistivity, stability, and calibration.

Jenni, P.; Sonderegger, P.; Paar, H. P.; Wigmans, R.

22

HARDROC: Readout chip for CALICE\\/EUDET Digital Hadronic Calorimeter  

Microsoft Academic Search

HARDROC [1] (HAdronic Rpc Detector Read Out Chip) is the very front end chip designed for the readout of the RPC or Micromegas foreseen for the Digital HAdronic CALorimeter (DHCAL) of the future International Linear Collider and designed within the CALICE collaboration [2]. The very fine granularity of the ILC hadronic calorimeters (1cm2 pads) implies a huge number of electronics

Frederic Dulucq; Christophe de La Taille; Gisele Martin-Chassard; Nathalie Seguin-Moreau

2010-01-01

23

A hadron calorimeter with scintillators parallel to the beam  

NASA Astrophysics Data System (ADS)

A hadron calorimeter in which scintillators are arranged nearly parallel to the incident particle direction and light is collected by optical fibres with WLS, has been built. The iron absorber plates are of the tapered shape to fit a barrel structure of the collider geometry. The performance of the calorimeter studied with hadron beam is presented as a function of tilt angle without and with electromagnetic calorimeter in front of the hadron one.

Abramov, V.; Goncharov, P.; Gorin, A.; Gurzhiev, A.; Dyshkant, A.; Evdokimov, V.; Kolosov, V.; Korablev, A.; Korneev, Yu.; Kostritskii, A.; Krinitsyn, A.; Kryshkin, V.; Podstavkov, V.; Polyakov, V.; Shtannikov, A.; Tereschenko, S.; Turchanovich, L.; Zaichenko, A.

1997-02-01

24

The time structure of hadronic showers in highly granular calorimeters with tungsten and steel absorbers  

NASA Astrophysics Data System (ADS)

The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends on the active medium and on the absorber of the calorimeter. With the CALICE T3B experiment, a setup of 15 small plastic scintillator tiles read out with Silicon Photomultipliers, the time structure of showers is measured on a statistical basis with high spatial and temporal resolution in sampling calorimeters with tungsten and steel absorbers. The results are compared to GEANT4 (version 9.4 patch 03) simulations with different hadronic physics models. These comparisons demonstrate the importance of using high precision treatment of low-energy neutrons for tungsten absorbers, while an overall good agreement between data and simulations for all considered models is observed for steel.

Adloff, C.; Blaising, J.-J.; Chefdeville, M.; Drancourt, C.; Gaglione, R.; Geffroy, N.; Karyotakis, Y.; Koletsou, I.; Prast, J.; Vouters, G.; Repond, J.; Schlereth, J.; Xia, L.; Baldolemar, E.; Li, J.; Park, S. T.; Sosebee, M.; White, A. P.; Yu, J.; Eigen, G.; Thomson, M. A.; Ward, D. R.; Benchekroun, D.; Hoummada, A.; Khoulaki, Y.; Apostolakis, J.; Arfaoui, S.; Benoit, M.; Dannheim, D.; Elsener, K.; Folger, G.; Grefe, C.; Ivantchenko, V.; Killenberg, M.; Klempt, W.; van der Kraaij, E.; Linssen, L.; Lucaci-Timoce, A.-I.; Münnich, A.; Poss, S.; Ribon, A.; Roloff, P.; Sailer, A.; Schlatter, D.; Sicking, E.; Strube, J.; Uzhinskiy, V.; Cârloganu, C.; Gay, P.; Manen, S.; Royer, L.; Cornett, U.; David, D.; Ebrahimi, A.; Falley, G.; Feege, N.; Gadow, K.; Göttlicher, P.; Günter, C.; Hartbrich, O.; Hermberg, B.; Karstensen, S.; Krivan, F.; Krüger, K.; Lu, S.; Lutz, B.; Morozov, S.; Morgunov, V.; Neubüser, C.; Reinecke, M.; Sefkow, F.; Smirnov, P.; Terwort, M.; Fagot, A.; Tytgat, M.; Zaganidis, N.; Hostachy, J.-Y.; Morin, L.; Garutti, E.; Laurien, S.; Marchesini, I.; Matysek, M.; Ramilli, M.; Briggl, K.; Eckert, P.; Harion, T.; Schultz-Coulon, H.-Ch; Shen, W.; Stamen, R.; Chang, S.; Khan, A.; Kim, D. H.; Kong, D. J.; Oh, Y. D.; Bilki, B.; Norbeck, E.; Northacker, D.; Onel, Y.; Wilson, G. W.; Kawagoe, K.; Miyazaki, Y.; Sudo, Y.; Ueno, H.; Yoshioka, T.; Dauncey, P. D.; Cortina Gil, E.; Mannai, S.; Baulieu, G.; Calabria, P.; Caponetto, L.; Combaret, C.; Della Negra, R.; Eté, R.; Grenier, G.; Han, R.; Ianigro, J.-C.; Kieffer, R.; Laktineh, I.; Lumb, N.; Mathez, H.; Mirabito, L.; Petrukhin, A.; Steen, A.; Tromeur, W.; Vander Donckt, M.; Zoccarato, Y.; Berenguer Antequera, J.; Calvo Alamillo, E.; Fouz, M.-C.; Puerta-Pelayo, J.; Corriveau, F.; Bobchenko, B.; Chadeeva, M.; Danilov, M.; Epifantsev, A.; Markin, O.; Mizuk, R.; Novikov, E.; Rusinov, V.; Tarkovsky, E.; Kozlov, V.; Soloviev, Y.; Besson, D.; Buzhan, P.; Ilyin, A.; Kantserov, V.; Kaplin, V.; Popova, E.; Tikhomirov, V.; Gabriel, M.; Kiesling, C.; Seidel, K.; Simon, F.; Soldner, C.; Szalay, M.; Tesar, M.; Weuste, L.; Amjad, M. S.; Bonis, J.; Conforti di Lorenzo, S.; Cornebise, P.; Fleury, J.; Frisson, T.; van der Kolk, N.; Richard, F.; Pöschl, R.; Rouëné, J.; Anduze, M.; Balagura, V.; Becheva, E.; Boudry, V.; Brient, J.-C.; Cornat, R.; Frotin, M.; Gastaldi, F.; Guliyev, E.; Haddad, Y.; Magniette, F.; Ruan, M.; Tran, T. H.; Videau, H.; Callier, S.; Dulucq, F.; Martin-Chassard, G.; de la Taille, Ch; Raux, L.; Seguin-Moreau, N.; Zacek, J.; Cvach, J.; Gallus, P.; Havranek, M.; Janata, M.; Kvasnicka, J.; Lednicky, D.; Marcisovsky, M.; Polak, I.; Popule, J.; Tomasek, L.; Tomasek, M.; Ruzicka, P.; Sicho, P.; Smolik, J.; Vrba, V.; Zalesak, J.; Belhorma, B.; Ghazlane, H.; Kotera, K.; Ono, H.; Takeshita, T.; Uozumi, S.; Chai, J. S.; Song, H. S.; Lee, S. H.; Götze, M.; Sauer, J.; Weber, S.; Zeitnitz, C.

2014-07-01

25

The Time Structure of Hadronic Showers in highly granular Calorimeters with Tungsten and Steel Absorbers  

E-print Network

The intrinsic time structure of hadronic showers influences the timing capability and the required integration time of hadronic calorimeters in particle physics experiments, and depends on the active medium and on the absorber of the calorimeter. With the CALICE T3B experiment, a setup of 15 small plastic scintillator tiles read out with Silicon Photomultipliers, the time structure of showers is measured on a statistical basis with high spatial and temporal resolution in sampling calorimeters with tungsten and steel absorbers. The results are compared to GEANT4 (version 9.4 patch 03) simulations with different hadronic physics models. These comparisons demonstrate the importance of using high precision treatment of low-energy neutrons for tungsten absorbers, while an overall good agreement between data and simulations for all considered models is observed for steel.

Adloff, C; Chefdeville, M; Drancourt, C; Gaglione, R; Geffroy, N; Karyotakis, Y; Koletsou, I; Prast, J; Repond, G Vouters J; Schlereth, J; Baldolemar, L Xia E; Li, J; Park, S T; Sosebee, M; White, A P; Yu, J; Eigen, G; Thomson, M A; Ward, D R; Benchekroun, D; Hoummada, A; Apostolakis, Y Khoulaki J; Arfaoui, A; Benoit, M; Dannheim, D; Elsener, K; Folger, G; Grefe, C; Ivantchenko, V; Killenberg, M; Klempt, W; van der Kraaij, E; Linssen, L; Lucaci-Timoce, A -I; Münnich, A; Poss, S; Ribon, A; Roloff, P; Sailer, A; Schlatter, D; Sicking, E; Strube, J; Uzhinskiy, V; Carloganu, C; Gay, P; Manen, S; Royer, L; Cornett, U; David, D; Ebrahimi, A; Falley, G; Feege, N; Gadow, K; Göttlicher, P; Günter, C; Hartbrich, O; Hermberg, B; Karstensen, S; Krivan, F; Krüger, K; Lu, S; Lutz, B; Morozov, S; Morgunov, V; Neubüser, C; Reinecke, M; Sefkow, F; Smirnov, P; Terwort, M; Fagot, A; Tytgat, M; Zaganidis, N; Hostachy, J -Y; Morin, L; Garutti, E; Laurien, S; Marchesini, I; Matysek, M; Ramilli, M; Briggl, K; Eckert, P; Harion, T; Schultz-Coulon, H -Ch; Shen, W; Stamen, R; Chang, S; Khan, A; Kim, D H; Kong, D J; Oh, Y D; Bilki, B; Norbeck, E; Northacker, D; Onel, Y; Wilson, G W; Kawagoe, K; Miyazaki, Y; Sudo, Y; Ueno, H; Yoshioka, T; Dauncey, P D; Gil, E Cortina; Mannai, S; Baulieu, G; Calabria, P; Caponetto, L; Combaret, C; Della Negra, R; Ete, R; Grenier, G; Han, R; Ianigro, J-C; Kieffer, R; Laktineh, I; Lumb, N; Mathez, H; Mirabito, L; Petrukhin, A; Steen, A; Tromeur, W; Donckt, M Vander; Antequera, Y Zoccarato J Berenguer; Alamillo, E Calvo; Fouz, M -C; Puerta-Pelayo, J; Corriveau, F; Bobchenko, B; Chadeeva, M; Danilov, M; Epifantsev, A; Markin, O; Mizuk, R; Novikov, E; Rusinov, V; Tarkovsky, E; Kozlov, V; Soloviev, Y; Besson, D; Buzhan, P; Ilyin, A; Kantserov, V; Kaplin, V; Popova, E; Tikhomirov, V; Gabriel, M; Kiesling, C; Seidel, K; Simon, F; Soldner, C; Szalay, M; Tesar, M; Weuste, L; Amjad, M S; Bonis, J; di Lorenzo, S Conforti; Cornebise, P; Fleury, J; Frisson, T; van der Kolk, N; Richard, F; Pöschl, R; Rouene, J; Anduze, M; Balagura, V; Becheva, E; Boudry, V; Brient, J-C; Cornat, R; Frotin, M; Gastaldi, F; Guliyev, E; Haddad, Y; Magniette, F; Ruan, M; Tran, T H; Videau, H; Callier, S; Dulucq, F; Martin-Chassard, G; de la Taille, Ch; Raux, L; Seguin-Moreau, N; Zacek, J; Cvach, J; Gallus, P; Havranek, M; Janata, M; Kvasnicka, J; Lednicky, D; Marcisovsky, M; Polak, I; Popule, J; Tomasek, L; Tomasek, M; Ruzicka, P; Sicho, P; Smolik, J; Vrba, V; Zalesak, J; Belhorma,; Ghazlane, H; Kotera, K; Ono, H; Takeshita, T; Uozumi, S; Chai, J S; Song, H S; Lee, S H; Götze, M; Sauer, J; Weber, S; Zeitnitz, C

2014-01-01

26

Measurement of pion and proton response and longitudinal shower profiles up to 20 nuclear interaction lengths with the ATLAS Tile calorimeter  

Microsoft Academic Search

The response of pions and protons in the energy range of 20–180GeV, produced at CERN's SPS H8 test-beam line in the ATLAS iron–scintillator Tile hadron calorimeter, has been measured. The test-beam configuration allowed the measurement of the longitudinal shower development for pions and protons up to 20 nuclear interaction lengths. It was found that pions penetrate deeper in the calorimeter

P. Adragna; C. Alexa; K. Anderson; A. Antonaki; A. Arabidze; L. Batkova; V. Batusov; H. P. Beck; E. Bergeaas Kuutmann; C. Biscarat; G. Blanchot; A. Bogush; C. Bohm; V. Boldea; M. Bosman; C. Bromberg; J. Budagov; D. Burckhart-Chromek; M. Caprini; L. Caloba; D. Calvet; T. Carli; J. Carvalho; M. Cascella; J. Castelo; M. V. Castillo; M. Cavalli-Sforza; V. Cavasinni; A. S. Cerqueira; C. Clement; M. Cobal; F. Cogswell; S. Constantinescu; D. Costanzo; A. Corso-Radu; C. Cuenca; D. O. Damazio; T. Davidek; K. de; T. Del Prete; B. Di Girolamo; S. Dita; T. Djobava; M. Dobson; A. Dotti; R. Downing; I. Efthymiopoulos; D. Eriksson; D. Errede; S. Errede; A. Farbin; D. Fassouliotis; R. Febbraro; A. Fenyuk; C. Ferdi; A. Ferrer; V. Flaminio; D. Francis; E. Fullana; S. Gadomski; S. Gameiro; V. Garde; K. Gellerstedt; V. Giakoumopoulou; O. Gildemeister; V. Gilewsky; N. Giokaris; N. Gollub; A. Gomes; V. Gonzalez; B. Gorini; P. Grenier; P. Gris; M. Gruwe; V. Guarino; C. Guicheney; A. Gupta; C. Haeberli; H. Hakobyan; M. Haney; S. Hellman; A. Henriques; E. Higon; S. Holmgren; M. Hurwitz; J. Huston; C. Iglesias; A. Isaev; I. Jen-La Plante; M. Joos; T. Junk; A. Karyukhin; A. Kazarov; H. Khandanyan; J. Khramov; J. Khubua; S. Kolos; I. Korolkov; P. Krivkova; Y. Kulchitsky; Yu. Kurochkin; P. Kuzhir; T. Le Compte; R. Lefevre; G. Lehmann; R. Leitner; M. Lembesi; J. Lesser; J. Li; M. Liablin; M. Lokajicek; Y. Lomakin; A. Lupi; C. Maidanchik; A. Maio; M. Makouski; S. Maliukov; A. Manousakis; L. Mapelli; C. Marques; F. Marroquim; F. Martin; E. Mazzoni; F. Merritt; A. Miagkov; R. Miller; I. Minashvili; L. Miralles; G. Montarou; M. Mosidze; A. Myagkov; S. Nemecek; M. Nessi; L. Nodulman; B. Nordkvist; O. Norniella; J. Novakova; A. Onofre; M. Oreglia; D. Pallin; D. Pantea; J. Petersen; J. Pilcher; J. Pina; J. Pinhão; F. Podlyski; X. Portell; J. Poveda; L. Pribyl; L. E. Price; J. Proudfoot; M. Ramstedt; R. Richards; C. Roda; V. Romanov; P. Rosnet; P. Roy; A. Ruiz; V. Rumiantsev; N. Russakovich; O. Saltó; B. Salvachua; E. Sanchis; H. Sanders; C. Santoni; J. G. Saraiva; F. Sarri; I. Satsunkevitch; L.-P. Says; G. Schlager; J. Schlereth; J. M. Seixas; B. Selldèn; N. Shalanda; P. Shevtsov; M. Shochet; J. Silva; P. Da Silva; V. Simaitis; M. Simonyan; A. Sissakian; J. Sjölin; C. Solans; A. Solodkov; I. Soloviev; O. Solovyanov; M. Sosebee; F. Spanò; R. Stanek; E. Starchenko; P. Starovoitov; P. Stavina; M. Suk; I. Sykora; F. Tang; P. Tas; R. Teuscher; S. Tokar; N. Topilin; J. Torres; L. Tremblet; P. Tsiareshka; M. Tylmad; D. Underwood; G. Unel; G. Usai; A. Valero; S. Valkar; J. A. Valls; A. Vartapetian; F. Vazeille; I. Vichou; V. Vinogradov; I. Vivarelli; M. Volpi; A. White; A. Zaitsev; A. Zenine; T. Zenis

2010-01-01

27

CALICE Digital Hadron Calorimeter: Calibration and Response to Hadrons  

E-print Network

The large CALICE Digital Hadron Calorimeter prototype (DHCAL) was built in 2009 - 2010. The DHCAL uses Resistive Plate Chambers (RPCs) as active media and is read out with 1 x 1 cm2 pads and digital (1 - bit) resolution. With a world record of about 0.5M readout channels, the DHCAL offers the possibility to study hadronic interactions with unprecedented spatial resolution. This talk reports on the results from the analysis of pion events of momenta between 2 to 60 GeV/c collected in the Fermilab test beam with an emphasis on the intricate calibration procedures.

Burak Bilki

2014-03-31

28

Calorimeter Simulation with Hadrons in CMS  

SciTech Connect

CMS is using Geant4 to simulate the detector setup for the forthcoming data from the LHC. Validation of physics processes inside Geant4 is a major concern in view of getting a proper description of jets and missing energy for signal and background events. This is done by carrying out an extensive studies with test beam using the prototypes or real detector modules of the CMS calorimeter. These data are matched with Geant4 predictions using the same framework that is used for the entire CMS detector. Tuning of the Geant4 models is carried out and steps to be used in reproducing detector signals are defined in view of measurements of energy response, energy resolution, transverse and longitudinal shower profiles for a variety of hadron beams over a broad energy spectrum between 2 to 300 GeV/c. The tuned Monte Carlo predictions match many of these measurements within systematic uncertainties.

Piperov, Stefan; /Sofiya, Inst. Nucl. Res. /Fermilab

2008-11-01

29

A Scintillator tile-fiber preshower detector for the CDF Central Calorimeter  

SciTech Connect

The front face of the CDF central calorimeter is being equipped with a new Preshower detector, based on scintillator tiles read out by WLS fibers. A light yield of about 40 pe/MIP at the tile exit was obtained, exceeding the design requirements.

S. Lami

2004-08-12

30

Hadron showers in an iron-streamer tube sampling calorimeter  

Microsoft Academic Search

Hadronic showers in an iron-streamer tube sampling calorimeter have been studied for energies ranging between 3 and 25 GeV. Longitudinal and transverse energy distributions have been parametrized and compared with those determined for iron-scintillator calorimeters.

M. G. Catanesi; D. Creanza; M. de Palma; A. Farilla; G. Iaselli; G. Maggi; A. Mastrogiacomo; S. Natali; S. Nuzzo; A. Ranieri; G. Raso; F. Romano; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; G. Zito; A. Antonelli; R. Baldini; G. Bencivenni; G. Bologna; F. Bossi; P. Campana; G. Capon; V. Chiarella; B. D'Ettore-Piazzoli; G. Felici; P. Laurelli; G. Mannocchi; F. Murtas; G. P. Murtas; G. Nicoletti; P. Picchi; G. Bagliesi; G. Batignani; C. Bradaschia; U. Bottigli; L. Foà; A. Giassi; F. Ligabue; A. Messineo; F. Palla; G. Sanguinetti; R. Tenchini

1990-01-01

31

Design of an FPGA-based embedded system for the ATLAS Tile Calorimeter front-end electronics test-bench  

NASA Astrophysics Data System (ADS)

The portable test-bench for the certification of the ATLAS tile hadronic calorimeter front-end electronics has been redesigned for the present Long Shutdown (LS1) of LHC, improving its portability and expanding its functionalities. This paper presents a new test-bench based on a Xilinx Virtex-5 FPGA that implements an embedded system using a PowerPC 440 microprocessor hard core and custom IP cores. A light Linux version runs on the PowerPC microprocessor and handles the IP cores which implement the different functionalities needed to perform the desired tests such as TTCvi emulation, G-Link decoding, ADC control and data reception.

Carrió, F.; Kim, H. Y.; Moreno, P.; Reed, R.; Sandrock, C.; Schettino, V.; Shalyugin, A.; Solans, C.; Souza, J.; Usai, G.; Valero, A.

2014-03-01

32

Studies of the response of the prototype CMS hadron calorimeter, including magnetic field effects, to pion, electron, and muon beams  

NASA Astrophysics Data System (ADS)

We report on the response of a prototype CMS hadron calorimeter module to charged particle beams of pions, muons, and electrons with momenta up to 375 GeV/c . The data were taken at the H2 and H4 beamlines at CERN in 1995 and 1996. The prototype sampling calorimeter used copper absorber plates and scintillator tiles with wavelength shifting fibers for readout. The effects of a magnetic field of up to 3 T on the response of the calorimeter to muons, electrons, and pions are presented, and the effects of an upstream lead tungstate crystal electromagnetic calorimeter on the linearity and energy resolution of the combined calorimetric system to hadrons are evaluated. The results are compared with Monte Carlo simulations and are used to optimize the choice of total absorber depth, sampling frequency, and longitudinal readout segmentation.

Abramov, V. V.; Acharya, B. S.; Akchurin, N.; Atanasov, I.; Baiatian, G.; Ball, A.; Banerjee, S.; Banerjee, S.; de Barbaro, P.; Barnes, V.; Bencze, G.; Bodek, A.; Booke, M.; Budd, H.; Cremaldi, L.; Cushman, P.; Dugad, S. R.; Dimitrov, L.; Dyshkant, A.; Elias, J.; Evdokimov, V. N.; Fong, D.; Freeman, J.; Genchev, V.; Goncharov, P. I.; Green, D.; Gurtu, A.; Hagopian, V.; Iaydjiev, P.; Korneev, Yu.; Krinitsyn, A.; Krishnaswami, G.; Krishnaswamy, M. R.; Kryshkin, V.; Kunori, S.; Laasanen, A.; Lazic, D.; Levchuk, L.; Litov, L.; Mondal, N. K.; Moulik, T.; Narasimham, V. S.; Nemashkalo, A.; Onel, Y.; Petrov, P.; Petukhov, Yu.; Piperov, S.; Popov, V.; Reidy, J.; Ronzhin, A.; Ruchti, R.; Singh, J. B.; Shen, Q.; Sirunyan, A.; Skuja, A.; Skup, E.; Sorokin, P.; Sudhakar, K.; Summers, D.; Szoncso, F.; Tereshenko, S. I.; Timmermans, C.; Tonwar, S. C.; Turchanovich, L.; Tyukov, V.; Volodko, A.; Yukaev, A.; Zaitchenko, A.; Zatserklyaniy, A.; CMS-HCAL Collaboration

2001-01-01

33

Electromagnetic and Hadron Calorimeters in the MIPP Experiment  

E-print Network

The purpose of the MIPP experiment is to study the inclusive production of photons, pions, kaons and nucleons in pi, K and p interactions on various targets using beams from the Main Injector at Fermilab. The function of the calorimeters is to measure the production of forward-going neutrons and photons. The electromagnetic calorimeter consist of 10 lead plates interspersed with proportional chambers. It was followed by the hadron calorimeter with 64 steel plates interspersed with scintillator. The data presented were collected with a variety of targets and beam momenta from 5 GeV/c to 120 GeV/c. The energy calibration of both calorimeters with electrons, pions, kaons, and protons is discussed. The resolution for electrons was found to be 0.27/sqrt(E), and for hadrons the resolution was 0.554/sqrt(E) with a constant term of 2.6%. The performance of the calorimeters was tested on a neutron sample.

T. S. Nigmanov; H. R. Gustafson; M. J. Longo; H. K. Park; D. Rajaram; C. Dukes; L. C. Lu; C. Materniak; K. Nelson; A. Norman; H. Meyer; A. Lebedev; S. Seun; N. Graf; J. M. Paley; G. Aydin; Y. Gunaydin; D. E. Miller

2009-03-13

34

Lossless compression of ATLAS Tile Calorimeter raw data  

NASA Astrophysics Data System (ADS)

Recording and storing the Tile Calorimeter data at 100 KHz frequency is an important task in ATLAS experiment processing. At this moment Amplitude, Time and Quality Factor (QF) parameters are calculated using Optimal Filtering Reconstruction method. If QF is considered good enough, these three parameters are only stored, otherwise the data quality is considered bad and it is proposed to store raw data for further offline analysis. Without any compression, bandwidth limitation allows to send up to 9 channels of additional raw data. Simple considerations show that when QF is bad due to the shape differences between standard pulse shape and current signal (e.g. when several signals overlap), all channels are likely to report bad QF while the contained data may still be valuable. So, the possibility to save just 9 samples is insufficient and we have to compress the data. Experiments show that standard compression tools such as RAR, ZIP, etc. cannot successfully deal with this problem because they cannot take benefit of smooth curved shape of the raw data and correlations between the channels. In the present paper a lossless data compressing algorithm is proposed which is likely to better meet existing challenges. This method has been checked on SPLASH events (run 87851, contains 26 SPLASH events) and proved to be sufficient to save ALL channels data using the existing bandwidth. Unlike the common purpose compressing tools the proposed method exploits heavily the geometry-dependent correlations between different channels. It is important to note that the method relies on the only assumption that the registered signal shape is smooth enough and it does not require exact information about the standard pulse shape function to compress the data. Thus this method can be applied for recording pilled-up or unexpected signals as well.

Tsiskaridze, Vakhtang; Atlas Tile Calorimeter

2010-04-01

35

Measurement of Pion and Proton Response and Longitudinal Shower Profiles up to 20 Nuclear Interaction Lengths with the ATLAS Tile Calorimeter  

Microsoft Academic Search

The response of pions and protons in the energy range of 20 to 180 GeV produced at CERN's SPS H8 test beam line in the ATLAS iron-scintillator Tile hadron calorimeter has been measured. The test-beam configuration allowed to measure the longitudinal shower development for pions and protons up to 20 nuclear interaction lengths. It is found that pions penetrate deeper

P Adragna; C Alexa; K Anderson; A Antonaki; A Arabidze; L Batkova; V Batusov; H P Beck; E Bergeaas Kuutmann; C Biscarat; G Blanchot; A Bogush; C Bohm; V Boldea; M Bosman; C Bromberg; J Budagov; D Burckhart-Chromek; M Caprini; L Caloba; D Calvet; T Carli; J Carvalho; M Cascella; J Castelo; M V Castillo; M Cavalli-Sforza; V Cavasinni; A S Cerqueira; C Clement; M Cobal; F Cogswell; S Constantinescu; D Costanzo; A Corso-Radu; C Cuenca; D O Damazio; T Davidek; K De; T Del Prete; B Di Girolamo; S Dita; T Djobava; M Dobson; A Dotti; R Downing; I Efthymiopoulos; D Eriksson; D Errede; S Errede; A Farbin; D Fassouliotis; R Febbraro; A Fenyuk; C Ferdi; A Ferrer; V Flaminio; D Francis; E Fullana; S Gadomski; S Gameiro; V Garde; K Gellerstedt; V Giakoumopoulou; O Gildemeister; V Gilewsky; N Giokaris; N Gollub; A Gomes; V Gonzalez; B Gorini; P Grenier; P Gris; M Gruwe; V Guarino; C Guicheney; A Gupta; C Haeberli; H Hakobyan; M Haney; S Hellman; A Henriques; E Higon; S Holmgren; M Hurwitz; J Huston; C Iglesias; A Isaev; I Jen-La Plante; M Joos; T Junk; A Karyukhin; A Kazarov; H Khandanyan; J Khramov; J Khubua; S Kolos; I Korolkov; P Krivkova; Y Kulchitsky; Yu Kurochkin; P Kuzhir; T LeCompte; R Lefevre; G Lehmann; R Leitner; M Lembesi; J Lesser; J Li; M Liablin; M Lokajicek; Y Lomakin; A Lupi; C Maidanchik; A Maio; M Makouski; S Maliukov; A Manousakis; L Mapelli; C Marques; F Marroquim; F Martin; E Mazzoni; F Merritt; A Miagkov; R Miller; I Minashvili; L Miralles; G Montarou; M Mosidze; A Myagkov; S Nemecek; M Nessi; L Nodulman; B Nordkvist; O Norniella; J Novakova; A Onofre; M Oreglia; D Pallin; D Pantea; J Petersen; J Pilcher; J Pina; J Pinhao; F Podlyski; X Portell Bueso; J Poveda; L Pribyl; L E Price; J Proudfoot; M Ramstedt; R Richards; C Roda; V Romanov; P Rosnet; P Roy; A Ruiz; V Rumiantsev; N Russakovich; O Salto; B Salvachua; E Sanchis; H Sanders; C Santoni; J G Saraiva; F Sarri; I Satsunkevitch; L P Says; G Schlager; J Schlereth; J M Seixas; B Sellden; N Shalanda; P Shevtsov; M Shochet; J Silva; P Da Silva; V Simaitis; M Simonyan; A Sissakian; J Sjolin; C Solans; A Solodkov; I Soloviev; O Solovyanov; M Sosebee; F Spano; R Stanek; E Starchenko; P Starovoitov; P Stavina; M Suk; I Sykora; F Tang; P Tas; R Teuscher; S Tokar; N Topilin; J Torres; L Tremblet; P Tsiareshka; M Tylmad; D Underwood; G Unel; G Usai; A Valero; S Valkar; J A Valls; A Vartapetian; F Vazeille; I Vichou; V Vinogradov; I Vivarelli; M Volpi; A White; A Zaitsev; A Zenine; T Zenis

2009-01-01

36

Forward hadron calorimeter of European hybrid spectrometer monitoring system  

SciTech Connect

The light-monitoring system of the forward neutral-hadron calorimeter of the European hybrid spectrometer is described. A general block diagram of the system, the functional relationships of the modules, and the ideology of the mathematical support are presented. The calorimeter records neutral particles in momentum range of 10-400 MeV/c. The calorimeter consists of 200 identical counters in modules of four each in a 10 X 20 matrix. The counters are made from plastic scintillators interlayed by steel plates. Light is collected by means of a rod reemitter admitted along the counter axis.

Boratave, M.; Datsko, N.A.; David, J.; Ivanyushenkov, Y.M.; Kistenoev, E.P.; Vlasov, E.V.

1985-11-01

37

Radiation damage in the SDC hadronic endcap calorimeter  

SciTech Connect

Detectors for the SSC face a radiation field which is very dependent on angle. For example, the SDC ``barrel`` calorimeter can function well for 100 year operation of the SSC running at desip luminosity, while the small angle ``forward calorimeter`` faces Grad of radiation in the same period. The SDC ``endcap`` calorimeter is in an intermediate location. One wishes to examine whether it might be possible to use conventional scintillator technology with periodic refurbishment in the endcap- The angular range covered by the endcap spans the region, 1.4 < {eta} < 3.0. In this note, only the hadronic (HAD) compartment is considered. The electromagnetic (EM) compartment is considered elsewhere.

Green, D.

1992-12-01

38

Radiation damage in the SDC hadronic endcap calorimeter  

SciTech Connect

Detectors for the SSC face a radiation field which is very dependent on angle. For example, the SDC barrel'' calorimeter can function well for 100 year operation of the SSC running at desip luminosity, while the small angle forward calorimeter'' faces Grad of radiation in the same period. The SDC endcap'' calorimeter is in an intermediate location. One wishes to examine whether it might be possible to use conventional scintillator technology with periodic refurbishment in the endcap- The angular range covered by the endcap spans the region, 1.4 < [eta] < 3.0. In this note, only the hadronic (HAD) compartment is considered. The electromagnetic (EM) compartment is considered elsewhere.

Green, D.

1992-12-01

39

Some fiber-tile optical studies for SDC electromagnetic calorimeter  

SciTech Connect

A number of different issues have been studied at Argonne for development of the fiber-tile optical system for SDC EM. Results on uniformity, masking and wrapping, beveled tiles, timing, fiber damage, and pressure on the scintillator are presented. The instrumentation and techniques are also briefly discussed.

Underwood, D.G.

1992-01-01

40

Some fiber-tile optical studies for SDC electromagnetic calorimeter  

SciTech Connect

A number of different issues have been studied at Argonne for development of the fiber-tile optical system for SDC EM. Results on uniformity, masking and wrapping, beveled tiles, timing, fiber damage, and pressure on the scintillator are presented. The instrumentation and techniques are also briefly discussed.

Underwood, D.G.

1992-11-01

41

Web System for Data Quality Assessment of Tile Calorimeter During the ATLAS Operation  

NASA Astrophysics Data System (ADS)

TileCal, the barrel hadronic calorimeter of the ATLAS experiment, gathers almost about 10,000 electronic channels. The supervision of the detector behavior is very important in order to ensure proper operation. Collaborators perform analysis over reconstructed data of calibration runs for giving detailed considerations about the equipment status. During the commissioning period, our group has developed seven web systems to support the data quality (DQ) assessment task. Each system covers a part of the process by providing information on the latest runs, displaying the DQ status from the monitoring framework, giving details about power supplies operation, presenting the generated plots and storing the validation outcomes, assisting to write logbook entries, creating and submitting the bad channels list to the conditions database and publishing the equipment performance history. The ATLAS operation increases amount of data that are retrieved, processed and stored by the web systems. In order to accomplish the new requirements, an optimized data model was designed to reduce the number of needed queries. The web systems were reassembled in a unique system in order to provide an integrated view of the validating process. The server load was minimized by using asynchronous requests from the browser.

Maidantchik, C.; Ferreira, F.; Grael, F.; Sivolella, A.; Balabram, L.; ATLAS TILE Calorimeter Community

2011-12-01

42

A concept for a hadron calorimeter with photodiode readout  

NASA Astrophysics Data System (ADS)

Advantages and disadvantages of tower structure hadron calorimeters are described. The photodiode readout conserves the high energy resolution of a scintillator sandwich calorimeter but allows technical improvements. Advantages are: operation in magnetic fields; compactness; easy fabrication; high modularity; high safety, and no short term drift and high long term stability limited by radiation damage and scintillator aging. Disadvantages are: limited possibility to insert muon tracking chambers; poor energy resolution at the low energy end; and reduced repetition rate for optimal energy resolution in the medium energy range.

Dietl, H.; Eigen, G.; Fonseca, V.; Lorenz, E.; Mageras, G.

1984-06-01

43

Computing challenges in the certification of ATLAS Tile Calorimeter front-end electronics during maintenance periods  

NASA Astrophysics Data System (ADS)

After two years of operation of the LHC, the ATLAS Tile calorimeter is undergoing a consolidation process of its front-end electronics. The certification is performed in the experimental area with a portable test-bench which is capable of controlling and reading out one front-end module through dedicated cables. This test-bench has been redesigned to improve the tests of the electronics functionality quality assessment of the data until the end of Phase I.

Solans, C.; Carrió, F.; Kim, H. Y.; Moreno, P.; Reed, R.; Sandrock, C.; Ruan, X.; Shalyugin, A.; Schettino, V.; Souza, J.; Usai, G.; Valero, A.; Tile calorimeter system, Atlas

2014-06-01

44

Performance of a limited streamer tube hadron calorimeter  

Microsoft Academic Search

The energy response and the resolution of a hadron calorimeter test module prepared by the ALEPH collaboration at LEP have been studied between 5 and 50 GeV. The energy resolution for pions follows a 0.78\\/&surd;E law for orthogonally incident particles. Effects of different incident polar angles (theta = 90°, 60°, 50°) are studied. The wire readout and the trigger capability

M. G. Catanesi; M. de Palma; A. Farilla; G. Iaselli; G. Maggi; S. Natali; S. Nuzzo; A. Ranieri; F. Romano; F. Ruggieri; G. Selvaggi; R. Tupputi; G. Zito; R. Baldini; G. Battistoni; G. Bencivenni; G. Bologna; P. Campana; G. Capon; F. Celani; V. Chiarella; A. Ciocio; B. D'Ettore-Piazzoli; G. Felici; P. Laurelli; G. P. Mannocchi; G. P. Murtas; G. Nicoletti; M. Pallotta; P. Picchi; G. Batignani; C. Bradaschia; U. Bottigli; L. Foa; A. Giassi; M. A. Giorgi; J. F. Lin

1986-01-01

45

Design, performance, and calibration of the CMS hadron-outer calorimeter  

Microsoft Academic Search

The Outer Hadron Calorimeter (HCAL HO) of the CMS detector is designed to measure the energy that is not contained by the\\u000a barrel (HCAL HB) and electromagnetic (ECAL EB) calorimeters. Due to space limitation the barrel calorimeters do not contain\\u000a completely the hadronic shower and an outer calorimeter (HO) was designed, constructed and inserted in the muon system of\\u000a CMS

Salavat Abdullin; Victor Abramov; Bannaje Sripathi Acharya; Nadia Adam; Mark Raymond Adams; Nural Akchurin; Ugur Akgun; Elif Asli Albayrak; E Walter Anderson; Georgy Antchev; M. Arcidy; S. Ayan; Sezgin Aydin; Tariq Aziz; Marc M Baarmand; Kanstantsin Babich; Drew Baden; Mustafa Numan Bakirci; Sudeshna Banerjee; Robert Bard; V. Bhandari; Harinder Singh Bawa; G. Baiatian; Gyorgy Bencze; Suman Bala Beri; Lisa Berntzon; V. Bhatnagar; A. Bhatti; A. Bodek; S. Bose; T. Bose; H. Budd; K. Burchesky; T. Camporesi; K. Cankoçak; K. Carrell; S. Cerci; S. Chendvankar; Y. Chung; W. Clarida; L. Cremaldi; P. Cushman; J. Damgov; P. de Barbaro; P. Debbins; M. Deliomeroglu; A. Demianov; T. de Visser; P. V. Deshpande; J. Diaz; L. Dimitrov; S. Dugad; I. Dumanoglu; F. Duru; I. Efthymiopoulos; J. Elias; D. Elvira; I. Emeliantchik; S. Eno; A. Ershov; S. Erturk; S. Esen; E. Eskut; A. Fenyvesi; W. Fisher; J. Freeman; S. N. Ganguli; V. Gaultney; H. Gamsizkan; V. Gavrilov; V. Genchev; S. Gleyzer; I. Golutvin; P. Goncharov; T. Grassi; D. Green; A. Gribushin; B. Grinev; M. Guchait; A. Gurtu; E. Gülmez; K. Gümüs; T. Haelen; S. Hagopian; V. Hagopian; V. Halyo; M. Hashemi; J. Hauptman; E. Hazen; A. Heering; A. Heister; A. Hunt; N. Ilyina; D. Ingram; E. Isiksal; C. Jarvis; C. Jeong; K. Johnson; J. Jones; V. Kaftanov; V. Kalagin; A. Kalinin; S. Kalmani; D. Karmgard; M. Kaur; M. Kaya; O. Kaya; A. Kayis-Topaksu; R. Kellogg; A. Khmelnikov; H. Kim; I. Kisselevich; O. Kodolova; J. Kohli; V. Kolossov; A. Korablev; Y. Korneev; I. Kosarev; L. Kramer; A. Krinitsyn; M. R. Krishnaswamy; A. Krokhotin; V. Kryshkin; S. Kuleshov; A. Kumar; S. Kunori; A. Laasanen; V. Ladygin; E. Laird; G. Landsberg; A. Laszlo; C. Lawlor; D. Lazic; S. W. Lee; L. Levchuk; S. Linn; D. Litvintsev; L. Lobolo; S. Los; V. Lubinsky; V. Lukanin; Y. Ma; E. Machado; M. Maity; G. Majumder; J. Mans; D. Marlow; P. Markowitz; G. Martinez; K. Mazumdar; J. P. Merlo; H. Mermerkaya; G. Mescheryakov; A. Mestvirishvili; M Mohammadi-Najafabadi; A. Moeller; P. Moissenz; N. Mondal; V. Mossolov; P. Nagaraj; V. S. Narasimham; E. Norbeck; J. Olson; Y. Onel; G. Onengut; C. Ozkan; H. Ozkurt; S. Ozkorucuklu; F. Ozok; S. Paktinat; A. Pal; M. Patil; A Petrosian; S. Petrushanko; A. Petrosyan; V Podrasky; S. Piperov; A. Polatoz; A. Pompos; S. Popescu; C. Posch; A. Pozdnyakov; W. Qian; R. M. Ralich; L. Reddy; J. Reidy; E. Rogalev; Y. Roh; J. Rohlf; A. Ronzhin; R. Ruchti; A. Ryazanov; G. Safronov; D. A. Sanders; C. Sanzeni; L. Sarycheva; B. Satyanarayana; I. Schmidt; S. Sekmen; S Sergeyev; V. Senchishin; M. Serin; R. Sever; B. Singh; J. B. Singh; A. Sirunyan; A. Skuja; S. Sharma; B. Sherwood; N. Shumeiko; V. Smirnov; K. Sogut; N. Sonmez; P. Sorokin; M. Spezziga; R. Stefanovich; V. Stolin; K. Sudhakar; L. Sulak; I. Suzuki; V. Talov; K. Teplov; R. Thomas; S. Tonwar; H. Topakli; C. Tully; L. Turchanovich; A. Ulyanov; A. Vanini; I. Vankov; I. Vardanyan; F. Varela; M. Vergili; P. Verma; G. Vesztergombi; R. Vidal; A. Vishnevskiy; E. Vlassov; I. Vodopiyanov; I. Volobouev; A. Volkov; A. Volodko; L. Wang; J. Werner; M. Wetstein; D. Winn; R. Wigmans; J. Whitmore; S. X. Wu; E. Yazgan; T. Yetkin; P. Zalan; A. Zarubin; M. Zeyrek

2008-01-01

46

A MICROMEGAS chamber with embedded DIRAC ASIC for hadronic calorimeter  

NASA Astrophysics Data System (ADS)

DIRAC is a 64 channel mixed-signal readout integrated circuit designed for Micro-Pattern Gaseous Detectors (MICROMEGAS, Gas Electron Multiplier) or Resistive Plate Chambers. These detectors are foreseen as the active part of a hadronic calorimeter for a high energy physics experiment at the International Linear Collider. Physics requirements lead to a highly granular hadronic calorimeter with up to thirty million channels, and probably only one or two bits channel readout (so-called digital calorimeter). The DIRAC ASIC has been especially designed for these constraints. Each channel of the DIRAC chip is made of a 4 gains charge preamplifier, a DC-servo loop, 3 switched comparators and a digital memory, thus providing additional energy information for a hit. A bulk MICROMEGAS detector with embedded DIRAC ASIC has been build. The tests of this assembly, both in laboratory with X-Rays and in a beam at CERN are presented, demonstrating the feasibility of a bulk MICROMEGAS detector with embedded electronics. The second version of the ASIC, with improved noise and additional functionalities, has just been received and preliminary results are reported in details.

Gaglione, R.; Adloff, C.; Chefdeville, M.; Espargilière, A.; Geffroy, N.; Karyotakis, Y.; De Oliveira, R.

2009-11-01

47

The Performance of the Cms Hadron Calorimeter with Cosmic Muons  

NASA Astrophysics Data System (ADS)

The hadron calorimeter (HCAL) is now installed in the CMS detector and ready to take collision data. The CMS HCAL barrel and end caps are made of scintillator and brass absorber covering the |?| range of 0.0 to 3 0. The forward calorimeter, made of quartz fibers and iron absorber, covers the |?| range of 3.0 to 5.0. These systems are now installed and integrated in the detector and participated in data taking with over 600 million cosmic muons taken with and without the CMS magnet on. In addition, CMS took data during four days in September 2008, when LHC provided a single proton beam at 450 GeV/c impinging on a collimator near CMS. The HCAL is ready to take collider data and performs as designed.

Hagopian, Vasken

2010-04-01

48

The hadron calorimeter of the compact muon solenoid (CMS)  

NASA Astrophysics Data System (ADS)

The Hadron Calorimeter of CMS is about 1000 tons af copper and scintillator sandwich in a 4 tesla magnetic field. It will be built in three segments, the barrel surrounding the central portion and the two end caps. The scintillators will use a tower structure made of grooved megatiles with wavelength shifting (WLS) fibers imbedded inside the grooves. The coverage extends to ?=3.0 and is hermetic with very few gaps. The 1995 test beam data was taken inside a 3 tesla magnet showed that it will work in a magnetic field, but will require a tail catcher inside the muon system.

Hagopian, Vasken

1997-02-01

49

The Hadron Calorimeter of the compact muon solenoid (CMS)  

NASA Astrophysics Data System (ADS)

The Hadron Calorimeter of CMS is about 1,000 tons of copper and scintillator sandwich in a 4 tesla magnetic field. It will be built in three segments, the barrel surrounding the central portion and the two end caps. The scintillators will use a tower structure made of grooved megatiles with wavelength shifting (WLS) fibers imbedded inside the grooves. The coverage extends to ? = 3.0 and is hermetic with very few gaps. The 1995 test beam data was taken inside a 3 tesla magnet showed that it will work in a magnetic field, but will require a tail catcher inside the muon system.

Hagopian, Vasken; CMS Collaboration

1998-02-01

50

Upgrade of the CMS hadron calorimeter for an upgraded LHC  

NASA Astrophysics Data System (ADS)

The CMS barrel and endcap hadron calorimeters (Hcal) upgrading the current photo-sensors are hybrid photodiodes (HPDs) to meet the demands of the upgraded luminosity of the LHC. A key aspect of the Hcal upgrade is to add longitudinal segmentation to improve background rejection, energy resolution, and electron isolation at L1 trigger. The increased segmentation can be achieved by replacing the HPD's with multi-pixel Geiger-mode avalanche photodiodes. The upgraded electronics are required to operate in a harsh environment and are constrained by the existing infrastructure. The proposed solutions span from chip level to system level. They include the development of a new ADC ASIC, the design and testing of higher speed transmitters to handle the increased data volume, the evaluation and use of circuits from other developments, evaluation of commercial FPGAs, better thermal design and improvements in the overall architecture.

Anderson, Jacob; CMS Hcal Collaboration

2012-12-01

51

Production and Quality Control of the CMS End Cap Hadron Calorimeter Optical Elements  

NASA Astrophysics Data System (ADS)

The end cap hadron calorimeter designed for the Compact Muon Solenoid (CMS) experiment is a sampling calorimeter with active elements based on scintillators read by wave length shifting fibers. We have fabricated 1368 optical elements containing 21096 scintillators. The production and the quality control of the optical elements are described.

Abramov, V. V.; Goncharov, P. I.; Korablev, A. V.; Korneev, Yu. P.; Krinitsyn, A. N.; Kryshkin, V. I.; Markov, A. A.; Talov, V. V.; Turchanovich, L. K.; Volkov, A. A.; Zaichenko, A. A.

2006-01-01

52

A New scintillator tile / fiber preshower detector for the CDF central calorimeter  

SciTech Connect

A detector designed to measure early particle showers has been installed in front of the central CDF calorimeter at the Tevatron. This new preshower detector is based on scintillator tiles coupled to wavelength-shifting fibers read out by multianode photomultipliers and has a total of 3,072 readout channels. The replacement of the old gas detector was required due to an expected increase in instantaneous luminosity of the Tevatron collider in the next few years. Calorimeter coverage, jet energy resolution, and electron and photon identification are among the expected improvements. The final detector design, together with the R&D studies that led to the choice of scintillator and fiber, mechanical assembly, and quality control are presented. The detector was installed in the fall 2004 Tevatron shutdown and is expected to start collecting colliding beam data by the end of 2004. First measurements indicate a light yield of 12 photoelectrons/MIP, a more than two-fold increase over the design goals.

Gallinaro, Michele; /Rockefeller U.; Artikov, A.; Bromberg, C.; Budagov, J.; Byrum, K.; Chang, S.; Chlachidze, G.; Goulianos, K.; Huston, J.; Iori, M.; Kim, M.; Kuhlmann,; Lami, S.; Lindgren, M.; Lytken, E.; Miller, R.; Nodulman, L.; Pauletta, G.; Penzo, A.; Proudfoot, J.; Roser, R.; /Argonne /Dubna, JINR /Fermilab /Kyungpook Natl. U. /Michigan

2004-11-01

53

Calorimeter based detectors for high energy hadron colliders  

SciTech Connect

This report discusses the following topics: the central calorimeter; and installation; commissioning; and calorimeter beam tests; the central drift chamber; cosmic ray and beam tests; chamber installation and commissioning; and software development; and SSC activities: the EMPACT project.

Marx, M.D.; Rijssenbeek, M. (State Univ. of New York, Stony Brook, NY (USA))

1990-01-01

54

Performance of the liquid argon electromagnetic and hadronic accordion calorimeter for the LHC  

NASA Astrophysics Data System (ADS)

A large scale prototype of a liquid argon accordion calorimeter, conceived as a sector of a full LHC Barrel detector and consisting of an electromagnetic and a hadronic section, has been constructed and tested at the CERN SPS with electron and pion beams in the energy range 10-287 GeV.

Gingrich, D.; Greenious, G.; Kitching, P.; Olsen, B.; Pinfold, J.; Rodning, N.; Boos, E.; Schaoutnikov, B. O.; Aubert, B.; Bazan, A.; Beaugiraud, B.; Colas, J.; Leflour, T.; Marie, M.; Stipcevic, M.; Wingerter-Seez, I.; Zolnierowski, Y. P.; Chemeissiani, M.; Fernandez, E.; Garrido, Ll.; Martinez, M.; Padilla, C.; Gordon, H. A.; Radeka, V.; Rahm, D.; Stephani, D.; Chevalley, J. L.; Fabjan, C. W.; Gildemeister, O.; Jenni, P.; Nessi, M.; Poggioli, L.; Richtel, W.; Vuillemin, V.; Baze, J. M.; Gosset, L.; Lavocat, P.; Lottin, J. P.; Mansoulie, B.; Meyer, J. P.; Renardy, J. F.; Schwindling, J.; Teiger, J.; Zaccone, H.; Collot, J.; de Saintignon, P.; Dzahini, D.; Laborie, G.; Mahout, G.; Merchez, E.; Pouxe, J.; Battistoni, G.; Camin, D. V.; Cavalli, D.; Costa, G.; Cozzi, L.; Cravero, A.; Ferrari, A.; Gianotti, F.; Mandelli, L.; Manfredi, F.; Mazzanti, M.; Perini, L.; Re, V.; Sala, P.; Speziali, V.; Barreiro, F.; Hervas, L.; Labarga, L.; Basa, S.; Checktman, A.; Clemens, J. C.; Cousinou, M. C.; Dargent, P.; Etienne, F.; Fouchez, D.; Monnier, E.; Nacash, R.; Nagy, E.; Olivetto, C.; Sauvage, D.; Tisserant, S.; Azuelos, G.; Beaudoin, G.; Depommier, P.; Florian, E. I.; Leroy, C.; Roy, J.; Augé, E.; Chase, R.; Chollet, J. C.; de La Taille, C.; Fayard, L.; Fournier, D.; Hirosoho, A.; Jean, Ph.; Iconomidou-Fayard, L.; Merkel, B.; Noppe, J. M.; Parrour, G.; Pétroff, P.; Repellin, J. P.; Schaffer, A.; Seguin, N.; Serin, L.; Unal, G.; Canton, D.; Hansl-Kozanecka, G.; Imbault, D.; Lory, J.; Zitoun, R.; Owe Eek, L.; Lund-Jensen, B.; Soderqvist, J.; Astbury, A.; Gaidos, G.; Keeler, R.; Lefebvre, M.; White, J.

1994-04-01

55

Quartz Plate Calorimeter as SLHC Upgrade to CMS Hadronic EndCap Calorimeters  

E-print Network

by the radiation damage tests with electron, proton, neutron and gamma beams. Using wavelength shifting fibers electron, proton, neutron, and gamma radiation. Results show that quartz will not be affected in radiation damage under super-LHC conditions, we propose to substitute the scintillator tiles in the original

Akgun, Ugur

56

Degradation of resolution in a homogeneous dual-readout hadronic calorimeter  

NASA Astrophysics Data System (ADS)

If the scintillator response to a hadronic shower in a semi-infinite uniform calorimeter structure is S relative to the electronic response, then S/E=[fem+(1-fem)(h/e)], where E is the incident hadron energy, fem is the electronic shower fraction, and h/e is the hadron/electron response ratio. If there is also a simultaneous readout with a different h/e, say a Cherenkov signal C, then a linear combination of the two signals provides an estimator of E that is proportional to the incident energy and whose distribution is nearly Gaussian—even though the S and C distributions are non-linear in E, wide, and skewed. Since an estimator of fem is also obtained, it is no longer a stochastic variable. Much of the remaining resolution variance is due to sampling fluctuations. These can be avoided in a homogeneous calorimeter. The energy resolution depends upon the contrast in h/e between the two channels. h/e is small in the Cherenkov channel. Mechanisms that increaseh/ein sampling calorimeters with organic scintillator readout are not available in a homogeneous inorganic scintillator calorimeter. The h/e contrast is very likely too small to provide the needed energy resolution.

Groom, Donald E.

2013-03-01

57

On the calibration of the electromagnetic component of a spaghetti calorimeter at a multi-TeV hadron collider  

NASA Astrophysics Data System (ADS)

This paper describes a novel method for calibrating the electromagnetic part of the "Spaghetti Calorimeter" at a high-luminosity, multi-TeV, hadron collider. The method takes advantage of the very high rate of ?'s produced in interactions, the very fine granularity of the calorimeter and its permeability to preshower detector signals. The calibration constants of each calorimeter module can be set at the 1% level by correlating them to the transverse momentum spectrum of the ?'s produced in the interactions.

Contin, A.; DeSalvo, R.; Hao, W.; Hatzifotiadou, D.

1992-05-01

58

Design, performance, and calibration of CMS hadron-barrel calorimeter wedges  

Microsoft Academic Search

Extensive measurements have been made with pions, electrons and muons on four production wedges of the compact muon solenoid\\u000a (CMS) hadron barrel (HB) calorimeter in the H2 beam line at CERN with particle momenta varying from 20 to 300 GeV\\/c. The time structure of the events was measured with the full chain of preproduction front-end electronics running at 34 MHz.\\u000a Moving-wire radioactive

S. Abdullin; V. Abramov; B. Acharya; M. Adams; N. Akchurin; U. Akgun; E. W. Anderson; G. Antchev; S. Ayan; S. Aydin; M. Baarmand; D. Baden; Sud. Banerjee; Sun. Banerjee; R. Bard; V. Barnes; H. Bawa; G. Baiatian; G. Bencze; S. Beri; V. Bhatnagar; A. Bodek; H. Budd; K. Burchesky; T. Camporesi; K. Cankoçak; K. Carrell; S. Chendvankar; Y. Chung; L. Cremaldi; P. Cushman; J. Damgov; P. de Barbaro; A. Demianov; T. de Visser; L. Dimitrov; S. Dugad; I. Dumanoglu; F. Duru; J. Elias; D. Elvira; I. Emeliantchik; S. Eno; A. Ershov; E. Eskut; W. Fisher; J. Freeman; V. Gavrilov; V. Genchev; Y. Gershtein; I. Golutvin; P. Goncharov; T. Grassi; D. Green; A. Gribushin; B. Grinev; E. Gülmez; K. Gümüs; T. Haelen; S. Hagopian; V. Hagopian; J. Hauptman; E. Hazen; A. Heering; M. Imboden; E. Isiksal; C. Jarvis; K. Johnson; V. Kaftanov; V. Kalagin; D. Karmgard; S. Kalmani; S. Katta; M. Kaur; M. Kaya; A. Kayis-Topaksu; R. Kellogg; A. Khmelnikov; I. Kisselevich; O. Kodolova; J. Kohli; V. Kolossov; A. Korablev; Y. Korneev; I. Kosarev; A. Krinitsyn; A. Krokhotin; V. Kryshkin; S. Kuleshov; A. Kumar; S. Kunori; A. Polatoz; A. Laasanen; C. Lawlor; D. Lazic; L. Levchuk; D. Litvintsev; L. Litov; S. Los; V. Lubinsky; V. Lukanin; E. Machado; J. Mans; V. Massolov; K. Mazumdar; J. P. Merlo; G. Mescheryakov; A. Mestvirishvili; M. Miller; N. Mondal; P. Nagaraj; E. Norbeck; V. O’Dell; J. Olson; Y. Onel; G. Onengut; N. Ozdes-Koca; S. Ozkorucuklu; F. Ozok; S. Paktinat; M. Patil; S. Petrushanko; V. Pikalov; S. Piperov; V. Podrasky; A. Pompos; C. Posch; W. Qian; R. Ralich; L. Reddy; J. Reidy; R. Ruchti; J. Rohlf; A. Ronzhin; A. Ryazanov; D. A. Sanders; C. Sanzeni; L. Sarycheva; B. Satyanarayana; I. Schmidt; V. Senchishin; S. Sergeyev; M. Serin-Zeyrek; R. Sever; J. Singh; A. Sirunyan; A. Skuja; B. Sherwood; N. Shumeiko; V. Smirnov; P. Sorokin; R. Stefanovich; V. Stolin; K. Sudhakar; I. Suzuki; V. Talov; R. Thomas; C. Tully; L. Turchanovich; A. Ulyanov; I. Vankov; I. Vardanyan; P. Verma; G. Vesztergombi; R. Vidal; E. Vlassov; I. Vodopiyanov; A. Volkov; A. Volodko; D. Winn; J. Whitmore; S. X. Wu; P. Zalan; A. Zarubin; M. Zeyrek

2008-01-01

59

Hadron energy response of the Iron Calorimeter detector at the India-based Neutrino Observatory  

NASA Astrophysics Data System (ADS)

The results of a Monte Carlo simulation study of the hadron energy response for the magnetized Iron CALorimeter detector, ICAL, proposed to be located at the India-based Neutrino Observatory (INO) is presented. Using a GEANT4 modeling of the detector ICAL, interactions of atmospheric neutrinos with target nuclei are simulated. The detector response to hadrons propagating through it is investigated using the hadron hit multiplicity in the active detector elements. The detector response to charged pions of fixed energy is studied first, followed by the average response to the hadrons produced in atmospheric neutrino interactions using events simulated with the NUANCE event generator. The shape of the hit distribution is observed to fit the Vavilov distribution, which reduces to a Gaussian at high energies. In terms of the parameters of this distribution, we present the hadron energy resolution as a function of hadron energy, and the calibration of hadron energy as a function of the hit multiplicity. The energy resolution for hadrons is found to be in the range 85% (for 1 GeV) - 36% (for 15 GeV).

Devi, M. M.; Ghosh, A.; Kaur, D.; Lakshmi, S. M.; Choubey, S.; Dighe, A.; Indumathi, D.; Kumar, S.; Murthy, M. V. N.; Naimuddin, Md

2013-11-01

60

Shower characteristics of particles with momenta up to 100 GeV in the CALICE scintillator-tungsten hadronic calorimeter  

E-print Network

We present a study of showers initiated by 1–100 GeV positrons, pions, kaons, and protons in the highly granular CALICE analogue scintillator-tungsten hadronic calorimeter. The data were taken at the CERN PS and SPS. The analysis includes measurements of the calorimeter response to each particle type and studies of the longitudinal and radial shower development. The results are compared to several Geant4 simulation models.

Sicking, E

2014-01-01

61

Sampling nonuniformity in the SDC calorimeter EM/HAD boundary  

SciTech Connect

The SDC steel hadronic (HAD) calorimeter absorber structure has been designed to be of low magnetic reluctance, high rigidity, and excellent hermiticity. Transverse scintillator tiles staggered longitudinally allow one to assemble the hadronic calorimeter compartment with no transverse dead areas between tiles. Clearly, the structure affords many advantages, among them hermeticity. The only problem is that, at the boundary of the structure, as at the E boundary, the steel sampling fraction for adjacent transverse towers is different. In principle then, the adjacent towers will have different energy calibrations, and different energy resolutions. The aim of this note is to examine the size of these effects and, ff necessary, explore ways to minimize their impact.

Green, D.

1993-04-01

62

Performance of the ATLAS Hadronic Endcap Calorimeter Modules to Electrons and Pions from 1999 Beam Test Data  

E-print Network

During the summer of 1999, the first six production modules of the Hadronic Endcap Calorimeter were assembled and installed in a beam test cryostat at CERN. In this note, the performance of the calorimeter is assessed in terms of its response and resolution to electrons and pions. The calorimeter is evaluated at five impact points and over an energy range of 10 to 200 GeV. The linearity of the response to electrons is observed to be within approximately one percent, and the average electromagnetic scale constant is measured to be $\\alpha_{em}=(3.82\\pm0.04)$~GeV/nA.\\linebreak The intrinsic (i.e.\\ electronic noise subtracted) energy resolution obtained is $\\frac{\\sigma}{E}=\\frac{(23.29\\pm 0.09)\\%}{\\sqrt{E_{0}(\\mbox{\\scriptsize{GeV}})}} \\oplus (0.00\\pm 0.13)\\%$ for electrons, and $\\frac{\\sigma}{E} = \\frac{(76.2\\pm 09)\\%}{\\sqrt{E_{0}(\\mbox{\\scriptsize{GeV}})}} \\oplus (6.68\\pm 0.09)\\%$ for pions, where $E_0$ is the incident particle energy. Comparison with Monte Carlo simulations and the effect of the electronics ...

Fortin, D

2001-01-01

63

SPIROC (SiPM Integrated Read-Out Chip): dedicated very front-end electronics for an ILC prototype hadronic calorimeter with SiPM read-out  

Microsoft Academic Search

The SPIROC chip is a dedicated very front-end electronics for an ILC (International Linear Collider) prototype of hadronic calorimeter using Silicon photomultiplier (SiPM) or Multi-Pixel Photon Counters (MPPC) readout. This ASIC is due to equip a 10,000-channel demonstrator in 2010. SPIROC is an evolution of FLC-SiPM used for the ILC Analogue HCAL physics prototype. The first prototype of SPIROC was

M. Bouchel; S. Callier; F. Dulucq; J. Fleury; J.-J. Jaeger; C. de La Taille; G. Martin-Chassard; L. Raux

2011-01-01

64

SPIROC (SiPM Integrated Read-Out Chip): Dedicated very front-end electronics for an ILC prototype hadronic calorimeter with SiPM read-out  

Microsoft Academic Search

The SPIROC chip is a dedicated very front-end electronics for an ILC prototype hadronic calorimeter with Silicon photomultiplier (or MPPC) readout. This ASIC is due to equip a 10,000-channel demonstrator in 2009. SPIROC is an evolution of FLC_SiPM used for the ILC AHCAL physics prototype [1]. SPIROC was submitted in June 2007 and will be tested in September 2007. It

Michel Bouchel; Frédéric Dulucq; Julien Fleury; C. de La Taille; G. Martin-Chassard; L. Raux

2007-01-01

65

Interactions of Particles with Momenta of 1–10 GeV in a Highly Granular Hadronic Calorimeter with Tungsten Absorbers  

E-print Network

Linear electron-positron colliders are proposed to complement and extend the physics programme of the Large Hadron Collider at CERN. In order to satisfy the physics goal requirements at linear colliders, detector concepts based on the Particle Flow approach are developed. Central to this approach are a high resolution tracker and a highly granular calorimeter which provide excellent jet energy resolution and background separation. The Compact Linear Collider (CLIC) is an electron-positron collider under study, aiming at centre-of-mass energies up to 3TeV. For the barrel hadronic calorimeter of experiments at CLIC, a detector with tungsten absorber plates is considered, as it is able to contain shower jets while keeping the diameter of the surrounding solenoid magnet limited. A highly granular analogue hadron calorimeter with tungsten absorbers was built by the CALICE collaboration. This thesis presents the analysis of the low-momentum data (1 GeV $\\leq$ p $\\leq$ 10 GeV) recorded in 2010 at the CERN Proton Syn...

Lam, Ching Bon; van Eijk, Bob

66

Tile Drainage  

E-print Network

..................... pre 14-- Tile D with C: Wheels ....... ....... pre 15-Tile R ........................ gure 16-laying llJt: ""ith TiIe Hook Machine ........ bitching look ... .. w:1n - gure 17-Concrete Outlc [Blank Page in Original Bulletin] TILE DRAINAGE...

Leidigh, A.H.; Gee, E.C.

1916-01-01

67

Reliable and redundant FPGA based read-out design in the ATLAS TileCal Demonstrator  

E-print Network

The Tile Calorimeter at ATLAS is a hadron calorimeter based on steel plates and scintillating tiles read out by PMTs. The current read-out system uses standard ADCs and custom ASICs to digitize and temporarily store the data on the detector. However, only a subset of the data is actually read out to the counting room. The on-detector electronics will be replaced around 2023. To achieve the required reliability the upgraded system will be highly redundant. Here the ASICs will be replaced with Kintex-7 FPGAs from Xilinx. This, in addition to the use of multiple 10 Gbps optical read-out links, will allow a full read-out of all detector data. Due to the higher radiation levels expected when the beam luminosity is increased, opportunities for repairs will be less frequent. The circuitry and firmware must therefore be designed for sufficiently high reliability using redundancy and radiation tolerant components. Within a year, a hybrid demonstrator including the new read-out system will be installed in one slice of the ATLAS Tile Calorimeter. This will allow the proposed upgrade to be thoroughly evaluated well before the planned 2023 deployment in all slices, especially with regard to long term reliability. Different firmware strategies alongside with their integration in the demonstrator are presented in the context of high reliability protection against hardware malfunction and radiation induced errors.

Henrik Åkerstedt; Steffen Muschter; Gary Drake; Kelby Anderson; Christian Bohm; Mark Oreglia; Fukun Tang

2014-06-23

68

Proposal for the completion of outstanding work on the mechanical absorber structure of SDC barrel electromagnetic calorimeter  

SciTech Connect

The High Energy Physics Division at Argonne National Laboratory and Westinghouse Science and Technology Center, Pittsburgh Pennsylvania have worked jointly on a scintillating tile/fiber calorimeter with the SDC collaboration since it`s inception in 1989. During the design and prototyping phase of the last three years, we have particularly worked on the development of an innovative cast lead approach to the absorber and the associated design of tile/fiber packaging for the barrel electromagnetic calorimeter (EMC). A full scale prototype program was initiated in 1992 to construct four EMC castings to be mated to respective steel hadronic wedges fabricated in China and presently at Fermilab. This proposal we outline in detail both the tasks that we have completed and those that we propose to complete in order to make the extensive investment in this technology useful to others in the field.

Guarino, V.; Hill, N.; Kicmal, T.; Nasiatka, J.; Petereit, E.; Price, L.; Proudfoot, J.; Stanek, R. [Argonne National Lab., IL (United States); Scherbarth, D. [Westinghouse Science and Technology Center, Pittsburth, PA, (United States)

1993-11-17

69

Response and Uniformity Studies of Directly Coupled Tiles  

SciTech Connect

A finely-segmented scintillator-based calorimeter which capitalizes on the marriage of proven detection techniques with novel solid-state photo-detector devices such as Multi-pixel Photon Counters (MPPCs) is an interesting calorimetric system from the point of view of future detector design. A calorimeter system consisting of millions of channels will require a high degree of integration. The first steps towards this integration have already been facilitated by the small size and magnetic field immunity of the MPPCs. The photo-conversion occurs right at the tile, thus obviating the need for routing of long clear fibers. Similar considerations apply to the presence of wave-length shifting (WLS) fibers inside the tiles which couple it to the photo-detectors. Significant simplification in construction and assembly ensue if the MPPCs can be coupled directly to the scintillator tiles. Equally importantly, the total absence of fibers would offer greater flexibility in the choice of the transverse segmentation while enhancing the electro-mechanical integrability of the design. The NIU high-energy physics group has been studying the fiberless or direct-coupling option for some time now. Encouraging results on response and response uniformity have been obtained using radioactive sources. This MOU seeks to set up a framework to extend these tests using beams at the MTBF. The results will be relevant to high granularity scintillator/crystal electromagnetic and hadronic calorimetry. The tests involve a set of small directly-coupled tile counters fabricated at NIU which will be placed in the beam to study their response and response uniformity as a function of the incident position of the particles passing through them.

Zutshi, Vishnu

2010-04-02

70

Hyperbolic Tilings  

NSDL National Science Digital Library

This image is a hyperbolic tiling made from alternating two shapes: heptagons and triangles. This image is a hyperbolic tiling made from alternating two shapes: heptagons and triangles. This image is a hyperbolic tiling made from alternating two shapes: heptagons and triangles. This image is a hyperbolic tiling made from alternating two shapes: heptagons and triangles. This image is a hyperbolic tiling made from alternating two shapes: heptagons and triangles.

71

Calibration of the CCFR target calorimeter  

NASA Astrophysics Data System (ADS)

The techniques used to calibrate and monitor the energy response of the CCFR (Lab E) iron-scintillator target calorimeter for a precision measurement of shower energies are described. Measurements on the energy response of the calorimeter to hadrons, electrons, and minimum ionizing muons (from range outs) are presented. The calorimeter's energy response and resolution for hadrons and electrons are obtained using a test beam with energies between 15 and 450 GeV.

Sakumoto, W. K.; de Barbaro, P.; Bodek, A.; Budd, H. S.; Kim, B. J.; Merritt, F. S.; Oreglia, M. J.; Schelman, H.; Schumm, B. A.; Bachmann, K. T.; Blaie, R. E.; Foudas, C.; King, B.; Lefmann, W. C.; Leung, W. C.; Mishra, S. R.; Oltman, E.; Quintas, P. Z.; Rabinowitz, S. A.; Sciulli, F.; Seligman, W. G.; Saevitz, M. H.; Bernstein, R. H.; Borcherding, F. O.; Fisk, H. E.; Lamm, M. J.; Marsh, W.; Merritt, K. W.; Rapidis, P. A.; Yovanovitch, D.; Sandler, P. H.; Smith, W. H.

1990-09-01

72

A prototype for the upgraded readout electronics of TileCal  

NASA Astrophysics Data System (ADS)

Upgrade plans for the ATLAS hadronic tile calorimeter (TileCal) at the LHC include full granularity readout to the 1st level trigger. R&D activities at different laboratories target different parts of the upgraded system. We are developing a possible implementation of the future readout electronics to be included in a full functional demonstrator. This must be capable of adapting to each of the three different front-end alternatives being considered. Prototypes of the two PCBs that will be in charge of digitization, control and communication have been developed. The design is redundant and uses FPGAs with fault tolerant firmware for control and protocol conversion. Communication and clock synchronization between on and offdetector electronics is implemented via high speed optical links using the GBT protocol.

Eriksson, D.; Muschter, S.; Anderson, K.; Bohm, C.; Kavianipour, H.; Oreglia, M.; Tang, F.

2012-02-01

73

Tiled microprocessors .  

E-print Network

??Current-day microprocessors have reached the point of diminishing returns due to inherent scalability limitations. This thesis examines the tiled microprocessor, a class of microprocessor which… (more)

Taylor, Michael Bedford, 1975-

2007-01-01

74

R & D results on scintillating tile\\/fiber calorimetry for the CDF and SDC detectors  

Microsoft Academic Search

We present results from R&D on scintillating tile calorimeters with wavelength-shifter-doped optical fiber readout. Studies of absolute light yields and measurements of spatial uniformity of response of various tile\\/fiber assemblies are described. Preliminary results on radiation hardness of the scintillating tile\\/fiber components are also presented.

P. de Barbaro; A. Bodek; R. S. Budd; Q. Fan; W. K. Sakumoto; B. Winer; J. Proudfoot; D. G. Underwood; G. W. Foster; J. Freeman; D. H. Kim; P. J. Limon; Y. Fukui; M. Mishina; V. Barnes; G. Apollinari; N. Giokaris; K. Goulianos; S. White

1992-01-01

75

Floor Tiles  

NSDL National Science Digital Library

This interactive Java applet allows users to explore tessellations made from quadrilaterals. The user deforms a square into another quadrilateral, which then tiles the plane. The user can choose two colors for the tessellation. An information window provides data about the shape to be tiled, including: area, perimeter, coordinates for vertices, and side lengths.

2005-01-01

76

Tiling phosphorene.  

PubMed

We present a scheme to categorize the structure of different layered phosphorene allotropes by mapping their nonplanar atomic structure onto a two-color 2D triangular tiling pattern. In the buckled structure of a phosphorene monolayer, we assign atoms in "top" positions to dark tiles and atoms in "bottom" positions to light tiles. Optimum sp(3) bonding is maintained throughout the structure when each triangular tile is surrounded by the same number N of like-colored tiles, with 0 ? N ? 2. Our ab initio density functional calculations indicate that both the relative stability and electronic properties depend primarily on the structural index N. The proposed mapping approach may also be applied to phosphorene structures with nonhexagonal rings and 2D quasicrystals with no translational symmetry, which we predict to be nearly as stable as the hexagonal network. PMID:25418761

Guan, Jie; Zhu, Zhen; Tománek, David

2014-12-23

77

Method and system for improved resolution of a compensated calorimeter detector  

DOEpatents

An improved method and system for a depleted uranium calorimeter detector used in high energy physics experiments. In a depleted uranium calorimeter detector, the energy of a particle entering the calorimeter detector is determined and the output response of the calorimeter detector is compensated so that the ratio of the integrated response of the calorimeter detector from a lepton to the integrated response of the calorimeter detector from a hadron of the same energy as the lepton is approximately equal to 1. In the present invention, the energy of a particle entering the calorimeter detector is determined as a function of time and the hadron content of the response of the calorimeter detector is inferred based upon the time structure of the energy pulse measured by the calorimeter detector. The energy measurement can be corrected based on the inference of the hadron content whereby the resolution of the calorimeter can be improved.

Dawson, John W. (Willowbrook, IL)

1991-01-01

78

Tiled microprocessors  

E-print Network

Current-day microprocessors have reached the point of diminishing returns due to inherent scalability limitations. This thesis examines the tiled microprocessor, a class of microprocessor which is physically scalable but ...

Taylor, Michael Bedford, 1975-

2007-01-01

79

Test beam performance of CDF plug upgrade EM calorimeter  

SciTech Connect

CDF Plug Upgrade(tile-fiber) EM Calorimeter performed resolution of 15%/{radical}E{circle_plus}0.7% with non-linearity less than 1% in a energy range of 5-180 GeV at Fermilab Test Beam. Transverse uniformity of inside-tower-response of the EM Calorimeter was 2.2% with 56 GeV positron, which was reduced to 1.0% with response map correction. We observed 300 photo electron/GeV in the EM Calorimeter. Ratios of EM Calorimeter response to positron beam to that to {sup 137}Cs Source was stable within 1% in the period of 8 months.

Fukui, Y. [National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan); CDF Upgrade Group

1998-01-01

80

Electromagnetic Calorimeter for HADES  

E-print Network

We propose to build the Electromagnetic calorimeter for the HADES di-lepton spectrometer. It will enable to measure the data on neutral meson production from nucleus-nucleus collisions, which are essential for interpretation of dilepton data, but are unknown in the energy range of planned experiments (2-10 GeV per nucleon). The calorimeter will improve the electron-hadron separation, and will be used for detection of photons from strange resonances in elementary and HI reactions. Detailed description of the detector layout, the support structure, the electronic readout and its performance studied via Monte Carlo simulations and series of dedicated test experiments is presented. The device will cover the total area of about 8 m^2 at polar angles between 12 and 45 degrees with almost full azimuthal coverage. The photon and electron energy resolution achieved in test experiments amounts to 5-6%/sqrt(E[GeV]) which is sufficient for the eta meson reconstruction with S/B ratio of 0.4% in Ni+Ni collisions at 8 AGeV. A purity of the identified leptons after the hadron rejection, resulting from simulations based on the test measurements, is better than 80% at momenta above 500 MeV/c, where time-of-flight cannot be used.

W. Czyzycki; E. Epple; L. Fabbietti; M. Golubeva; F. Guber; A. Ivashkin; M. Kajetanowicz; A. Krasa; F. Krizek; A. Kugler; K. Lapidus; E. Lisowski; J. Pietraszko; A. Reshetin; P. Salabura; Y. Sobolev; J. Stanislav; P. Tlusty; T. Torrieri; M. Traxler

2011-09-26

81

Recent results from the spaghetti calorimeter project  

NASA Astrophysics Data System (ADS)

In the past three years, the SPACAL Collaboration have developed the compensating lead/scintillating fiber calorimeter technique from its conceptual stage towards a mature technology allowing the construction of high-precision particle detectors. Last summer, a full-scale e.m./hadronic prototype calorimeter with a fiducial volume of 13 tons, containing 176855 scintillating plastic fibers, was tested at CERN. Results from these tests are described.

Wigmans, Richard

1992-05-01

82

Barrel calorimeter of the CMD-3 detector  

NASA Astrophysics Data System (ADS)

Since 2010 the CMD-3 detector has been collecting data at the e+e- collider VEPP-2000 at Budker Institute of Nuclear Physics. CMD-3 is a general purpose detector designed to study e+e- annihilation into hadrons in the wide energy range ?{s}=0.3-2 GeV. The CMD-3 barrel electromagnetic calorimeter consists of two subsystems: closest to the beam pipe is the Liquid Xenon calorimeter and the outer one is based on CsI scintillation crystals. The design of the calorimeter and its current performance are presented.

Anisenkov, A. V.; Aulchenko, V. M.; Barkov, L. M.; Bashtovoy, N. S.; Bondar, A. E.; Epifanov, D. A.; Epshteyn, L. B.; Erofeev, A. L.; Grebenuk, A. A.; Ignatov, F. V.; Karpov, S. V.; Khazin, B. I.; Kovalenko, O. A.; Kozyrev, A. N.; Kuzmin, A. S.; Logashenko, I. B.; Mikhailov, K. Yu.; Pestov, Yu. N.; Pivovarov, S. G.; Popov, A. S.; Razuvaev, G. P.; Ruban, A. A.; Ryzhenenkov, A. E.; Shebalin, V. E.; Shemyakin, D. N.; Shwartz, B. A.; Solodov, E. P.; Titov, V. M.; Talyshev, A. A.; Yudin, Yu. V.

2013-12-01

83

Electronics of LHCb calorimeter monitoring system  

E-print Network

All calorimeter sub-detectors in LHCb, the Scintillator Pad Detector (SPD), the Preshower detector (PS), the Electromagnetic Calorimeter (ECAL) and the Hadron Calorimeter (HCAL) are equipped with the Hamamatsu photomultiplier tubes (PMT) as devices for light to electrical signal conversion [1]. The PMT gain behaviour is not stable in a time, due to changes in the load current and due to ageing. The calorimeter light emitting diode (LED) monitoring system has been developed to monitor the PMT gain over time during data taking. Furthermore the system will play an important role during the detector commissioning and during LHC machine stops, in order to perform tests of the PMTs, cables and FE boards and measurements of relative time alignment. The aim of the paper is to describe the LED monitoring system architecture, some technical details of the electronics implementation based on radiation tolerant components and to summarize the system performance.

Konoplyannikov, A

2008-01-01

84

The Convenience of Tilings  

Microsoft Academic Search

Tiling problems provide for a very simple and transparent mechanism for encodingmachine computations. This gives rise to rather simple master reductions showingvarious versions of the tiling problem complete for various complexity classes. We investigatethe potential for using these tiling problems in subsequent reductions showinghardness of the combinatorial problems that really matter.We ilustrate our approach by means of three examples: a

Peter Van Emde Boas

1997-01-01

85

Understanding the performance of CMS calorimeter  

NASA Astrophysics Data System (ADS)

The performance of the CMS hadron calorimeter is studied using test beam facilities at CERN. Two wedges of brass-scintillator calorimeter are exposed to negative and positive beams with momenta between 3 and 300 GeV/c. Light produced in the scintillators are collected using wavelength shifting fibres and read out using hybrid photo-diodes. Each of the wedges has 17 layers of scintillators. In one of these wedges signal from all 17 layers are grouped together while in the other each layer is read out separately. The response, energy resolution, longitudinal and lateral shower profiles are measured.

Sharma, Seema

2007-12-01

86

The H 1 liquid argon calorimeter system  

NASA Astrophysics Data System (ADS)

The liquid argon calorimeter of the H 1 detector presently taking data at the HERA ep collider at DESY, Hamburg, is described. The main physics requirements and the most salient design features relevant to this calorimeter are given. The aim to have smooth and hermetic calorimetric coverage over the polar angular range 4° ? ? ? 154° is achieved by a single liquid argon cryostat containing calorimeter stacks structured in wheels and octants for easy handling. The absorber materials used are lead in the electromagnetic part and stainless steel in the hadronic part. The read-out system is pipelined to reduce the dead time induced by the high trigger rate expected at the HERA collider where consecutive bunches are separated in time by 96 ns. The main elements of the calorimeter, such as the cryostat, with its associated cryogenics, the stack modules, the read-out, calibration and trigger electronics as well as the data acquisition system are described. Performance results from data taken in calibration runs with full size H 1 calorimeter stacks at a CERN test beam, as well as results from data collected with the complete H 1 detector using cosmic rays during the initial phase of ep operations are presented. The observed energy resolutions and linearities are well in agreement with the requirements.

Andrieu, B.; Babayev, A.; Bán, J.; Banas, E.; Barrelet, E.; Bassler, U.; Bederede, D.; Bernard, R.; Bernardi, G.; Bernier, R.; Besançon, M.; Biasci, J.-C.; Binder, E.; Blouzon, F.; Blume, H.; Borras, K.; Boudry, V.; Brasse, F.; Breton, D.; Brettel, H.; Brisson, V.; Bruncko, D.; Buchner, U.; Busata, A.; Buschhorn, G.; Campbell, A. J.; Carli, T.; Charles, F.; Chase, R.; Colombo, M.; Coutures, Ch.; Coville, A.; Cozzika, G.; Cvach, J.; Danilov, M.; David, M.; David, J.; Delcourt, B.; Del Buono, L.; Descamps, F.; Devel, M.; DeRoeck, A.; Dingus, P.; Djidi, K.; Drescher, A.; Dretzler, U.; Drewe, M.; Duboc, J.; Dupont, F.; Efremenko, V.; Eisele, F.; Ernst, G.; Falley, G.; Fang, R.; Feltesse, J.; Feng, Z. Y.; Fent, J.; Ferencei, J.; Flauger, W.; Flügge, G.; Formánek, J.; Fröchtenicht, W.; Gamerdinger, K.; Gayler, J.; Giesgen, I.; Godlewski, J.; Goerlich, L.; Goldberg, M.; Goritchev, P.; Gosset, L.; Grässler, R.; Gregory, C.; Greif, H.; Grindhammer, G.; Haguenauer, M.; Hajduk, L.; Hamon, O.; Hartz, P.; Haydar, R.; Herynek, I.; Hildesheim, W.; Hladký, J.; Huber, J.; Huot, N.; Huppert, J.-F.; Imbault, D.; Jabiol, M.-A.; Jacholkowska, A.; Jaffré, M.; Jeanjean, J.; Jung, H.; Kiesling, C.; Kolander, M.; Kolanoski, H.; Koll, J.; Korbel, V.; Korn, M.; Krasny, W.; Kubantsev, M.; Kubenka, J.-P.; Küster, H.; Kuhlen, M.; Kur?a, T.; Kurzhöfer, J.; Laporte, J.-F.; Laskus, H.; Lemler, M.; Lenhardt, U.; Loch, P.; Lüers, D.; Malinovski, E.; Marks, J.; Martin, F.; Martyniak, J.; Merz, T.; Mikocki, S.; Monnier, E.; Montés, B.; Murín, P.; Nagovizin, V.; Nayman, P.; Nepeipivo, A.; Nguyen, H. K.; Novakova, H.; Nowak, G.; Oberlack, H.; Obrock, U.; Pailler, P.; Parey, J.-Y.; Pascaud, C.; Perrodo, P.; Peters, S.; Pharabod, J.-P.; Pimpl, W.; Rauschnabel, K.; Reboux, A.; Reimer, P.; Ribarics, P.; Rietz, M.; Rudowicz, M.; Rusakov, S.; Rusinov, V.; Rybicki, K.; Sahlmann, N.; Savitsky, M.; Sawallisch, P.; Schacht, P.; Schmitz, W.; Schmücker, H.; Seman, M.; Shekelyan, V.; Sheviakov, I.; Sirois, Y.; Smirnov, P.; Špalek, J.; Staeck, J.; Staroba, P.; Štefan, P.; Steiner, H.; Stier, J.; Strachota, J.; Thiele, K.; Tichomirov, I.; Tribanek, W.; Tschernyshov, V.; Turiot, M.; Turnau, J.; Urban, L.; Urban, M.; Valkar, S.; Valkarova, A.; Vallée, C.; Vecko, M.; Verrecchia, P.; Villet, G.; Wegener, D.; Weissbach, P.; Wellisch, H.-P.; Yiou, T. P.; ?á?ek, J.; Závada, P.; Zeitnitz, Ch.; Zomer, F.; H 1 Calorimeter Group

1993-12-01

87

Triangular spiral tilings  

NASA Astrophysics Data System (ADS)

The topology of spiral tilings is intimately related to phyllotaxis theory and continued fractions. A quadrilateral spiral tiling is determined by a suitable chosen triple (?, m, n), where \\zeta \\in { D}\\setminus { R}, and m?and?n are relatively prime integers. We give a simple characterization when (?, m, n) produce a triangular spiral tiling. When m?and?n are fixed, the admissible generators ? form a curve in the unit disk. The family of triangular spiral tilings with opposed parastichy pairs (m, n) is parameterized by the divergence angle arg (?), while triangular spiral tilings with non-opposed parastichy pairs are parameterized by the plastochrone ratio 1/|?|. The generators for triangular spiral tilings with opposed parastichy pairs are not dense in the complex parameter space, while those with non-opposed parastichy pairs are dense. The proofs will be given in a general setting of spiral multiple tilings. We present paper-folding (origami) sheets that build spiral towers whose top-down views are triangular tilings.

Sushida, Takamichi; Hizume, Akio; Yamagishi, Yoshikazu

2012-06-01

88

The KLOE electromagnetic calorimeter  

Microsoft Academic Search

The KLOE calorimeter is a fine lead-scintillating fiber sampling calorimeter. We describe in the following the calibration procedures and the calorimeter performances obtained after 3 years of data taking. We get an energy resolution for electromagnetic showers of 5.4%\\/E(GeV) and a time resolution of 56 ps\\/E(GeV). We also present a measurement of efficiency for low-energy photons.

M. Adinolfi; F. Ambrosino; A. Antonelli; M. Antonelli; F. Anulli; G. Barbiellini; G. Bencivenni; S. Bertolucci; C. Bini; C. Bloise; V. Bocci; F. Bossi; P. Branchini; G. Cabibbo; R. Caloi; P. Campana; M. Casarsa; G. Cataldi; F. Ceradini; F. Cervelli; P. Ciambrone; E. De Lucia; P. De Simone; G. De Zorzi; S. Dell'Agnello; A. Denig; A. di Domenico; C. di Donato; S. Di Falco; A. Doria; O. Erriquez; A. Farilla; A. Ferrari; M. L. Ferrer; G. Finocchiaro; C. Forti; A. Franceschi; P. Franzini; M. L. Gao; C. Gatti; P. Gauzzi; A. Giannasi; S. Giovannella; E. Graziani; H. G. Han; S. W. Han; X. Huang; M. Incagli; L. Ingrosso; L. Keeble; W. Kim; C. Kuo; G. Lanfranchi; J. Lee-Franzini; T. Lomtadze; C. S. Mao; M. Martemianov; W. Mei; R. Messi; S. Miscetti; S. Moccia; M. Moulson; S. Müller; F. Murtas; L. Pacciani; M. Palomba; M. Palutan; E. Pasqualucci; L. Passalacqua; A. Passeri; D. Picca; G. Pirozzi; L. Pontecorvo; M. Primavera; P. Santangelo; E. Santovetti; G. Saracino; R. D. Schamberger; B. Sciascia; F. Scuri; I. Sfiligoi; P. Silano; T. Spadaro; E. Spiriti; L. Tortora; P. Valente; B. Valeriani; G. Venanzoni; A. Ventura; S. Wölfle; Y. Wu; Y. G. Xie; P. F. Zema; C. D. Zhang; J. Q. Zhang; P. P. Zhao

2002-01-01

89

Secondary Emission Calorimeter Sensor Development  

NASA Astrophysics Data System (ADS)

In a Secondary Emission electron(SEe) detector module, Secondary Emission electrons (SEe) are generated from an SE surface/cathode, when charged hadronic or electromagnetic particles, particularly shower particles, penetrate an SE sampling module placed between absorber materials (Fe, Cu, Pb, W etc) in calorimeters. The SE cathode is a thin (10-50 nm thick) film (simple metal-oxides, or other higher yield materials) on the surface of a metal plate, which serves as the entrance “window” to a compact vacuum vessel (metal or metal-ceramic); this SE film cathode is analogous to a photocathode, and the SEe are similar to p.e., which are then amplified by dynodes, also is in a PMT. SE sensor modules can make use of electrochemically etched/machined or laser-cut metal mesh dynode sheets, as large as ~30 cm square, to amplify the Secondary Emission Electrons (SEe), much like those that compact metal mesh or mesh dynode PMT's use to amplify p.e.'s. The construction requirements easier than a PMT, since the entire final assembly can be done in air; there are no critical controlled thin film depositions, cesiation or other oxygen-excluded processes or other required vacuum activation, and consequently bake-out can be a refractory temperatures; the module is sealed by normal vacuum techniques (welding or brazing or other high temperature joinings), with a simple final heated vacuum pump-out and tip-off. The modules envisioned are compact, high gain, high speed, exceptionally radiation damage resistant, rugged, and cost effective, and can be fabricated in arbitrary tileable shapes. The SE sensor module anodes can be segmented transversely to sizes appropriate to reconstruct electromagnetic cores with high precision. The GEANT4 and existing calorimeter data estimated calorimeter response performance is between 35-50 Secondary Emission electrons per GeV, in a 1 cm thick Cu absorber calorimeter, with a gain per SEe > 105 per SEe, and an e/pi<1.2. The calorimeter pulse width is estimated to be <15 ns. With fine mesh sampling only (no thick absorbers) the resolution is ~25 MeV at 1 GeV.

Winn, David R.; Onel, Yasar

2012-12-01

90

The CMS barrel calorimeter response to particle beams from 2 to 350 GeV\\/ c  

Microsoft Academic Search

The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum\\u000a range from 2 to 350 GeV\\/c has been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied.\\u000a These tests, carried out at the H2 beam-line at CERN, provide a wealth of

S. Abdullin; V. Abramov; B. Acharya; N. Adam; M. Adams; P. Adzic; N. Akchurin; U. Akgun; E. Albayrak; R. Alemany-Fernandez; N. Almeida; G. Anagnostou; D. Andelin; E. W. Anderson; M. Anfreville; I. Anicin; G. Antchev; Z. Antunovic; R. Arcidiacono; M. W. Arenton; E. Auffray; S. Argiro; A. Askew; O. Atramentov; S. Ayan; M. Arcidy; S. Aydin; T. Aziz; M. Baarmand; K. Babich; S. Baccaro; D. Baden; S. Baffioni; M. N. Bakirci; M. Balazs; Sud. Banerjee; Sun. Banerjee; R. Bard; D. Barge; V. Barnes; D. Barney; L. Barone; A. Bartoloni; C. Baty; H. Bawa; G. Baiatian; D. Bandurin; S. Beauceron; K. W. Bell; G. Bencze; R. Benetta; M. Bercher; S. Beri; C. Bernet; L. Berntzon; U. Berthon; M. Besancon; B. Betev; R. Beuselinck; V. Bhatnagar; A. Bhatti; C. Biino; J. Blaha; P. Bloch; S. Blyth; A. Bodek; A. Bornheim; S. Bose; T. Bose; J. Bourotte; A. M. Brett; R. M. Brown; D. Britton; H. Budd; M. Buehler; K. Burchesky; P. Busson; B. Camanzi; T. Camporesi; K. Cankoçak; K. Carrell; E. Carrera; N. Cartiglia; F. Cavallari; S. Cerci; M. Cerutti; P. Chang; Y. H. Chang; C. Charlot; E. A. Chen; W. T. Chen; Z. Chen; S. Chendvankar; R. Chipaux; B. C. Choudhary; R. K. Choudhury; Y. Chung; W. Clarida; D. J. A. Cockerill; C. Combaret; S. Conetti; F. Cossutti; B. Cox; L. Cremaldi; P. Cushman; D. G. Cussans; I. Dafinei; J. Damgov; G. Daskalakis; G. Davatz; A. David; P. de Barbaro; P. Debbins; K. Deiters; M. Dejardin; M. Djordjevic; M. Deliomeroglu; D. Del Re; A. Demianov; A. De Min; D. Denegri; P. Depasse; T. de Visser; J. Descamps; P. V. Deshpande; J. Diaz; M. Diemoz; E. Di Marco; L. Dimitrov; G. Dissertori; M. Dittmar; L. Djambazov; L. Dobrzynski; S. Drndarevic; J. E. Duboscq; S. Dugad; I. Dumanoglu; F. Duru; D. Dutta; M. Dzelalija; I. Efthymiopoulos; J. Elias; A. Elliott-Peisert; H. El Mamouni; D. Elvira; I. Emeliantchik; S. Eno; A. Ershov; S. Erturk; S. Esen; E. Eskut; I. Evangelou; D. L. Evans; B. Fabbro; J. L. Faure; J. Fay; A. Fenyvesi; F. Ferri; W. Fisher; P. S. Flower; D. Franci; G. Franzoni; J. Freeman; K. Freudenreich; W. Funk; S. Ganjour; C. Gargiulo; S. Gascon; M. Gataullin; V. Gaultney; H. Gamsizkan; V. Gavrilov; Y. Geerebaert; V. Genchev; F. X. Gentit; D. Gerbaudo; Y. Gershtein; A. Ghezzi; M. D. Ghodgaonkar; J. Gilly; A. Givernaud; S. Gleyzer; S. Gninenko; A. Go; B. Gobbo; N. Godinovic; N. Golubev; I. Golutvin; P. Goncharov; D. Gong; P. Govoni; N. Grant; P. Gras; T. Grassi; D. Green; R. J. S. Greenhalgh; A. Gribushin; B. Grinev; J. P. Guillaud; A. Gurtu; E. Gülmez; K. Gümüs; T. Haelen; S. Hagopian; V. Hagopian; M. Haguenauer; V. Halyo; M. Hansen; M. Hashemi; J. Hauptman; E. Hazen; H. F. Heath; A. Heering; A. Heister; B. Heltsley; J. A. Hill; W. Hintz; R. Hirosky; P. R. Hobson; A. Honma; G. W. S. Hou; Y. Hsiung; A. Hunt; M. Husejko; B. Ille; N. Ilyina; R. Imlay; D. Ingram; Q. Ingram; E. Isiksal; P. Jarry; C. Jarvis; C. Jeong; C. Jessop; K. Johnson; J. Jones; D. Jovanovic; K. Kaadze; V. Kachanov; V. Kaftanov; S. Kailas; V. Kalagin; A. Kalinin; S. Kalmani; D. Karmgard; S. K. Kataria; M. Kaur; M. Kaya; O. Kaya; A. Kayis-Topaksu; R. Kellogg; B. W. Kennedy; A. Khmelnikov; H. Kim; I. Kisselevich; K. Kloukinas; O. Kodolova; J. Kohli; P. Kokkas; T. Kolberg; V. Kolossov; A. Korablev; Y. Korneev; I. Kosarev; L. Kramer; N. Krasnikov; A. Krinitsyn; A. Krokhotin; D. Krpic; V. Kryshkin; Y. Kubota; A. Kubrik; S. Kuleshov; A. Kumar; P. Kumar; S. Kunori; C. M. Kuo; P. Kurt; P. Kyberd; A. Kyriakis; A. Laasanen; V. Ladygin; E. Laird; G. Landsberg; A. Laszlo; C. Lawlor; D. Lazic; M. Lebeau; P. Lecomte; P. Lecoq; A. Ledovskoy; S.-W. Lee; G. Leshev; M. Lethuillier; L. Levchuk; S. W. Lin; W. Lin; S. Linn; A. L. Lintern; V. Litvine; D. Litvintsev; L. Litov; L. Lobolo; E. Locci; A. B. Lodge; E. Longo; D. Loukas; S. Los; V. Lubinsky; P. D. Luckey; V. Lukanin; W. Lustermann; C. Lynch; Y. Ma; E. Machado; H. Mahlke-Krueger; M. Maity; G. Majumder; M. Malberti; J. Malclès; D. Maletic; I. Mandjavidze; J. Mans; N. Manthos; Y. Maravin; C. Marchica; N. Marinelli; A. Markou; C. Markou; D. Marlow; P. Markowitz; M. Marone; G. Martinez; H. Mathez; V. Matveev; C. Mavrommatis; G. Maurelli; K. Mazumdar; P. Meridiani; J. P. Merlo; H. Mermerkaya; G. Mescheryakov; A. Mestvirishvili; V. Mikhailin; P. Milenovic; M. Miller; G. Milleret; P. Miné; A. Moeller; M. Mohammadi-Najafabadi; A. K. Mohanty; P. Moissenz; N. Mondal; F. Moortgat; V. Mossolov; M. Mur; P. Musella; Y. Musienko; P. Nagaraj; A. Nardulli; J. Nash; P. Nedelec; P. Negri; H. B. Newman; A. Nikitenko; E. Norbeck; F. Nessi-Tedaldi; M. M. Obertino; J. Olson; Y. Onel; G. Onengut; G. Organtini; T. Orimoto; C. Ozkan; H. Ozkurt; S. Ozkorucuklu; F. Ozok; M. Paganoni; P. Paganini; S. Paktinat; A. Pal; A. Palma; B. Panev; L. Pant; A. Papadakis; I. Papadakis; I. Papadopoulos; R. Paramatti; P. Parracho; N. Pastrone; M. Patil; J. R. Patterson; F. Pauss; A. Penzo; E. Petrakou; S. Petrushanko; A. Petrosyan

2009-01-01

91

A fractal version of the pinwheel tiling  

E-print Network

We introduce a fractal version of the pinwheel substitution tiling. There are thirteen basic prototiles, all of which have fractal boundaries. These tiles, along with their reflections and rotations, create a tiling space which is mutually locally derivable from the pinwheel tiling space. Interesting rotational properties, symmetries, and relative tile frequency are discussed for the tiling space associated with the fractal pinwheel tiling.

Natalie Priebe Frank; Michael F. Whittaker

2010-01-13

92

Zero Degree Calorimeter for CMS  

NASA Astrophysics Data System (ADS)

In 2007 the Large Hadron Collider (LHC) at CERN in Geneva will start to collide protons and lead ions together at extremely high energies. The purpose of the proton-proton running is to study the origin of mass. The purpose of the ion running is to recreate the first few moments of the universe. The Compact Muon Solenoid, or CMS, is one of the experiments at LHC. I am currently working with the Nuclear Physics Team at the University of Kansas on part of CMS, called the Zero Degree Calorimeter (ZDC). I use a simulation toolkit, Geant4, which uses the object-oriented nature of C++ code to allow users to build simulations of particle collisions. Neutrons hit the ZDC and collide with tungsten plates to produce a shower of particles. The ZDC uses tungsten plates to change the neutrons into charged particles, and optical fibers to gather Cerenkov photons that are created. The current goal is to convert as much energy that comes into the ZDC as possible into light energy, and determine the most effective design for the calorimeter. I will present estimates of the ZDC performance for both proton-proton and heavy ion running.

Lehnherr, Megan

2004-10-01

93

Clustering of Hadronic Showers with a Structural Algorithm  

SciTech Connect

The internal structure of hadronic showers can be resolved in a high-granularity calorimeter. This structure is described in terms of simple components and an algorithm for reconstruction of hadronic clusters using these components is presented. Results from applying this algorithm to simulated hadronic Z-pole events in the SiD concept are discussed.

Charles, M.J.; /SLAC

2005-12-13

94

Seamless tiled display system  

NASA Technical Reports Server (NTRS)

A modular and scalable seamless tiled display apparatus includes multiple display devices, a screen, and multiple lens assemblies. Each display device is subdivided into multiple sections, and each section is configured to display a sectional image. One of the lens assemblies is optically coupled to each of the sections of each of the display devices to project the sectional image displayed on that section onto the screen. The multiple lens assemblies are configured to merge the projected sectional images to form a single tiled image. The projected sectional images may be merged on the screen by magnifying and shifting the images in an appropriate manner. The magnification and shifting of these images eliminates any visual effect on the tiled display that may result from dead-band regions defined between each pair of adjacent sections on each display device, and due to gaps between multiple display devices.

Dubin, Matthew B. (Inventor); Larson, Brent D. (Inventor); Kolosowsky, Aleksandra (Inventor)

2006-01-01

95

Floating data acquisition system for microwave calorimeter measurements on MTX  

SciTech Connect

A microwave calorimeter has been designed for making 140-GHz absorption measurements on the MTX. Measurement of the intensity and spatial distribution of the FEL-generated microwave beam on the inner wall will indicate the absorption characteristics of the plasma when heated with a 140 GHz FEL pulse. The calorimeter works by monitoring changes of temperature in silicon carbide tiles located on the inner wall of the tokamak. Thermistors are used to measure the temperature of each tile. The tiles are located inside the tokamak about 1 cm outside of the limiter radius at machine potential. The success of this measurement depends on our ability to float the data acquisition system near machine potential and isolate it from the rest of the vault ground system. Our data acquisition system has 48 channels of thermistor signal conditioning, a multiplexer and digitizer section, a serial data formatter, and a fiber-optic transmitter to send the data out. Additionally, we bring timing signals to the interface through optical fibers to tell it when to begin measurement, while maintaining isolation. The receiver is an HP 200 series computer with a serial data interface; the computer provides storage and local display for the shot temperature profile. Additionally, the computer provides temporary storage of the data until it can be passed to a shared resource management system for archiving. 2 refs., 6 figs.

Sewall, N.R.; Meassick, S. (Lawrence Livermore National Lab., CA (USA))

1989-09-13

96

Photovoltaic roofing tile systems  

NASA Astrophysics Data System (ADS)

The integration of photovoltaic (PV) systems in architecture is discussed. A PV-solar roofing tile system with polymer concrete base; PV-roofing tile with elastomer frame profiles and aluminum profile frames; contact technique; and solar cell modules measuring technique are described. Field tests at several places were conducted on the solar generator, electric current behavior, battery station, electric installation, power conditioner, solar measuring system with magnetic bubble memory technique, data transmission via telephone modems, and data processing system. The very favorable response to the PV-compact system proves the commercial possibilities of photovoltaic integration in architecture.

Melchior, B.

97

Pyroplasticity in porcelain tiles  

Microsoft Academic Search

Clay bodies exhibit pyroplasticity when they are fired. Basically they get soft again in the heat of the kiln and can deform under their own weight. This property is especially important when firing products with very low porosity like porcelain tiles, due their content in melting materials. In this way, five raw materials, a kaolin, a talc, an albite, a

Adriano Michael Bernardin; Darlei Souza de Medeiros; Humberto Gracher Riella

2006-01-01

98

Americium/curium calorimeter  

SciTech Connect

This paper will describe a new calorimeter design currently under development at the Savannah River Technology Center. The new design concept was selected due to extreme facility conditions and is similar to commercial, small-scale calorimeters. Material to be measured is a vitrified americium/curium mixture generating approximately 50 watts per container. The facility environment for this application is extreme compared to a typical calorimeter environment. Background radiation levels are estimated to be 22,400 rads/hour and temperature variations are expected to follow outside conditions. Measurements will be conducted in a remote cell utilizing manipulators. A prototype was fabricated and testing completed to demonstrate the concept. Data from the prototype testing will be presented.

ReFalo, L.A.

2000-06-14

99

Performance of Glast Calorimeter  

NASA Astrophysics Data System (ADS)

The GLAST Large Area Telescope to be launched in 2006 is dedicated to gamma-ray astronomy from 20 MeV to 300 GeV. Its calorimeter consists of 16 modules of 8 layers of 12 CsI(Tl) crystals arranged in an hodoscopic array. Each module is placed under a silicon tracker using tungsten converters. The calorimeter is only 8.5X0 thick. Therefore, depending on the energy regime, the shower containment is rather poor and corrections need to be applied. We present here the correction algorithms as well as the performances of GLAST calorimeter in terms of energy, position and direction, based on detailed simulations of the instrument and beam tests results.

Terrier, R.; John, M.; Djannati-Atai, A.; Chekhtman, A.; Grove, J. E.; Johnson, W. N.

2002-01-01

100

Results on damage induced by high-energy protons in LYSO calorimeter crystals  

NASA Astrophysics Data System (ADS)

Lutetium-Yttrium Orthosilicate doped with Cerium (LYSO), as a bright scintillating crystal, is a candidate for calorimetry applications in strong ionising-radiation fields and large high-energy hadron fluences are expected at the CERN Large Hadron Collider after the planned High-Luminosity upgrade. There, proton-proton collisions will produce fast hadron fluences up to ~5×1014cm-2 in the large-rapidity regions of the calorimeters.

Dissertori, G.; Luckey, D.; Nessi-Tedaldi, F.; Pauss, F.; Quittnat, M.; Wallny, R.; Glaser, M.

2014-05-01

101

The KLOE electromagnetic calorimeter  

Microsoft Academic Search

The KLOE lead-scintillating fiber calorimeter has been fully installed in the KLOE assembly hall, and is currently operated with the final electronics and data acquisition system, using a cosmic rays trigger. The technical solutions adopted for the detector construction, the front end electronics design, and the data acquisition system are reviewed. The calibration procedure with cosmic rays is also presented.

A. Passeri; M. Adinolfi; F. Ambrosino; A. Aloisio; A. Andryakov; A. Angeletti; A. Antonelli; C. Bacci; R. Baldini-Ferroli; G. Barbiellini; G. Bencivenni; S. Bertolucci; C. Bini; C. Bloise; V. Bocci; F. Bossi; P. Branchini; L. Bucci; G. Cabibbo; A. Calcaterra; R. Caloi; P. Campana; G. Capon; G. Carboni; A. Carboni; A. Cardini; C. Carusotti; G. Cataldi; F. Ceradini; F. Cervelli; F. Cevenini; G. Chiefari; P. Ciambrone; S. Conticelli; E. De Lucia; G. De Robertis; R. De Sangro; P. De Simone; G. De Zorzi; S. Dell'Agnello; A. Denig; A. Di Domenico; S. Di Falco; A. Doria; F. Donno; E. Drago; V. Elia; L. Entesano; O. Erriquez; A. Farilla; G. Felici; A. Ferrari; M. L. Ferrer; G. Finocchiaro; D. Fiore; C. Forti; G. Foti; A. Franceschi; P. Franzini; A. Galli; M. L. Gao; C. Gatti; P. Gauzzi; S. Giovannella; V. Golovatyuk; E. Gorini; F. Grancagnolo; E. Graziani; P. Guarnaccia; U. v. Hagel; H. G. Han; S. W. Han; M. Incagli; L. Ingrosso; Y. Y. Jiang; W. Kim; W. Kluge; V. Kulikov; F. Lacava; G. Lanfranchi; J. Lee-Franzini; T. Lomtadze; C. Luisi; C. S. Mao; A. Martini; W. Mei; L. Merola; R. Messi; S. Miscetti; A. Moalem; S. Moccia; F. Murtas; M. Napolitano; A. Nedosekin; P. Pagès; M. Palutan; L. Paoluzi; E. Pasqualucci; L. Passalacqua; M. Passaseo; V. Patera; E. Petrolo; G. Petrucci; D. Picca; M. Piccolo; A. Pintus; G. Pirozzi; L. Pontecorvo; M. Primavera; F. Ruggieri; P. Santangelo; E. Santovetti; G. Saracino; R. D. Schamberger; C. Schwick; B. Sciascia; A. Sciubba; F. Scuri; I. Sfiligoi; S. Sinibaldi; T. Spadaro; S. Spagnolo; E. Spiriti; C. Stanescu; L. Tortora; E. Valente; P. Valente; G. Venanzoni; S. Veneziano; D. Vettoretti; S. Weseler; Y. G. Xie; C. D. Zhang; J. Q. Zhang; P. P. Zhao

1999-01-01

102

End Calorimeter Warm Tube Heater  

SciTech Connect

The Tevatron accelerator beam tube must pass through the End Calorimeter cryostats of the D-Zero Collider Detector. Furthermore, the End Calorimeter cryostats must be allowed to roll back forty inches without interruption of the vacuum system; hence, the Tev tube must slide through the End Calorimeter cryostat as it is rolled back. The Tev pass through the End Calorimeter can actually be thought of as a cluster of concentric tubes: Tev tube, warm (vacuum vessel) tube, IS layers of superinsulation, cold tube (argon vessel), and Inner Hadronic center support tube. M. Foley generated an ANSYS model to study the heat load. to the cryostat. during collider physics studies; that is, without operation of the heater. A sketch of the model is included in the appendix. The vacuum space and superinsulation was modeled as a thermal solid, with conductivity derived from tests performed at Fermilab. An additional estimate was done. by this author, using data supplied by NR-2. a superinsulation manufacturer. The ANSYS result and hand calculation are in close agreement. The ANSYS model was modified. by this author. to incorporate the effect of the heater. Whereas the earlier model studied steady state operation only. the revised model considers the heater-off steady state mode as the initial condition. then performs a transient analysis with a final load step for time tending towards infinity. Results show the thermal gradient as a function of time and applied voltage. It should be noted that M. Foley's model was generated for one half the warm tube. implying the tube to be symmetric. In reality. the downstream connection (relative to the collision point) attachment to the vacuum shell is via several convolutions of a 0.020-inch wall bellows; hence. a nearly adiabatic boundary condition. Accordingly. the results reported in the table reflect extrapolation of the curves to the downstream end of the tube. Using results from the ANSYS analysis, that is, tube temperature and corresponding heat flux, temperature of the nichrome wire can be estimated. The possibility of frost is of genuine concern, as evidenced by the 250 K minimum temperature for the warm tube while heaters are not operating. Noting that steady state operation at 1 Amp (40 volts) allows the nichrome wire to stay below the critical temperature for Kapton, a conservative plan is to allow several days of heater operation, at 1 Amp (40 volts), before roll-back. Warm-up can be accelerated by operating the heaters in excess of 1 Amp, as evidenced by the test where a maximum of 3.2 Amp was supplied. Operating the heaters in excess of 1 Amp must be done with care since a rapid rise in temperature will likely occur once any ice present has been melted.

Primdahl, K.; /Fermilab

1991-08-06

103

Ceramic tile expansion engine housing  

DOEpatents

An expandable ceramic tile housing for a high temperature engine is disclosed wherein each tile is independently supported in place in an interlocking matrix by retention mechanisms which mechanically couple the individual ceramic tiles to an outer metal support housing while maintaining thermal isolation of the metal housing from the ceramic tiles. The ceramic tiles are formed with either an octagonal front face portion and a square shank portion or a square front face portion with an octagonal shank portion. The length of the sides of the octagonal front face portion on one tile is equal to the length of the sides of the square front face portion of adjoining tiles to permit formation of an interlocking matrix. Fibrous ceramic sealing material may be placed between radial and tangential facing surfaces of adjacent tiles to limit radial gas flow therebetween. Labyrinth-sealed pressure-controlled compartments may be established between the tile housing and the outer metal support housing to control radial gas flow.

Myers, Blake (4650 Almond Cir., Livermore, CA 94550)

1995-01-01

104

Ceramic tile expansion engine housing  

DOEpatents

An expandable ceramic tile housing for a high temperature engine is disclosed wherein each tile is independently supported in place in an interlocking matrix by retention mechanisms which mechanically couple the individual ceramic tiles to an outer metal support housing while maintaining thermal isolation of the metal housing from the ceramic tiles. The ceramic tiles are formed with either an octagonal front face portion and a square shank portion or a square front face portion with an octagonal shank portion. The length of the sides of the octagonal front face portion on one tile is equal to the length of the sides of the square front face portion of adjoining tiles to permit formation of an interlocking matrix. Fibrous ceramic sealing material may be placed between radial and tangential facing surfaces of adjacent tiles to limit radial gas flow there between. Labyrinth-sealed pressure-controlled compartments may be established between the tile housing and the outer metal support housing to control radial gas flow. 8 figures.

Myers, B.

1995-04-11

105

Status of the Liquid Xenon calorimeter of the CMD-3 detector  

NASA Astrophysics Data System (ADS)

Since 2010 the CMD-3 detector has been collecting data at the e+e- collider VEPP-2000 at Budker Institute of Nuclear Physics. CMD-3 is a general purpose detector designed to study e+e- annihilation into hadrons in the wide energy range ?s = 0.3-2GeV. The barrel electromagnetic calorimeter of the detector has a thickness equal to 13.5X0 and consists of two subsystems: closest to the beam pipe is the Liquid Xenon calorimeter (LXe) and the outer one is based on CsI scintillation crystals (CsI). The design of the LXe calorimeter and its current performance are presented.

Anisenkov, A. V.; Aulchenko, V. M.; Barkov, L. M.; Bashtovoy, N. S.; Epshteyn, L. B.; Grebenuk, A. A.; Ignatov, F. V.; Karpov, S. V.; Khazin, B. I.; Kozyrev, A. N.; Logashenko, I. B.; Mikhailov, K. Yu; Pestov, Yu N.; Popov, A. S.; Ruban, A. A.; Shebalin, V. E.; Titov, V. M.; Talyshev, A. A.; Yudin, Yu V.

2014-08-01

106

Central Calorimeter configuration: A study report to the SDC Technical Board  

SciTech Connect

The single most important determinant of the overall Central Calorimeter (CC) shape is the criterion for depth of hadron shower containment. This criterion and its rapidity dependence is discussed in a companion document to this report titled ``Depth Requirements in SSC Calorimeters`` by a D. Green et al., SDC-91-00016. The conclusion reached there is that the calorimeter should be 10 {lambda} thick at {eta} = 0 and increase smoothly to 12 {lambda} at {eta} = 3. We adopt this criterion in this report and discuss the mechanical properties and design details of a CC that meets this condition.

Kirk, T.B.W.; Wicklund, A.B.

1991-04-11

107

Particle identification in the longitudinally unsegmented RD52 calorimeter  

NASA Astrophysics Data System (ADS)

The RD52 dual-readout calorimeter is a longitudinally unsegmented instrument intended for the detection of both electromagnetically and hadronically interacting particles with unprecedented precision. In this paper, the identification of the showering particles and, in particular, the identification of electrons and ?s with this instrument are investigated. The techniques used for this purpose include differences in the shower development observed with scintillation light and Cherenkov radiation, the radial shower profile of the particles and the time structure (including the starting point) of the calorimeter signals. It turns out that, at 60 GeV, electrons can be correctly identified in 99.8% of the cases, by means of criteria that eliminate 99.8% of the hadrons.

Akchurin, N.; Bedeschi, F.; Cardini, A.; Cascella, M.; De Pedis, D.; Ferrari, R.; Fracchia, S.; Franchino, S.; Fraternali, M.; Gaudio, G.; Genova, P.; Hauptman, J.; La Rotonda, L.; Lee, S.; Livan, M.; Meoni, E.; Pinci, D.; Policicchio, A.; Saraiva, J. G.; Scuri, F.; Sill, A.; Venturelli, T.; Wigmans, R.

2014-01-01

108

Some Generalizations of the Pinwheel Tiling  

Microsoft Academic Search

.    We introduce a new family of nonperiodic tilings, based on a substitution rule that generalizes the pinwheel tiling of Conway\\u000a and Radin. In each tiling the tiles are similar to a single triangular prototile. In a countable number of cases, the tiles\\u000a appear in a finite number of sizes and an infinite number of orientations. These tilings generally

L. Sadun

1998-01-01

109

DSWA calorimeter bomb experiments  

SciTech Connect

Two experiments were performed in which 25 grams of TNT were detonated inside an expended detonation calorimeter bomb. The bomb had a contained volume of approximately 5.28 liters. In the first experiment, the bomb was charged with 3 atmospheres of nitrogen. In the second, it was charged with 2.58 atmospheres (23.1 psi gage) of oxygen. In each experiment pressure was monitored over a period of approximately 1200 microseconds after the pulse to the CDU. Monitoring was performed via two 10,000 psi 102AO3 PCB high frequency pressure transducers mounted symmetrically in the lid of the calorimeter bomb. Conditioners used were PCB 482As. The signals from the transducers were recorded in digital format on a multi channel Tektronix scope. The sampling frequency was 10 Mhz (10 samples per microsecond). After a period of cooling following detonation, gas samples were taken and were subsequently submitted for analysis using gas mass spectrometry. Due to a late request for post shot measurement, it was only possible to make a rough estimate of the weight of debris (carbon) remaining in the calorimeter bomb following the second experiment.

Cunningham, B

1998-10-01

110

Tiled Microprocessors Michael Bedford Taylor  

E-print Network

Tiled Microprocessors by Michael Bedford Taylor A.B., Computer Science Dartmouth College, 1996 S;Tiled Microprocessors by Michael Bedford Taylor Submitted to the Department of Electrical Engineering of Philosophy in Electrical Engineering and Computer Science ABSTRACT Current-day microprocessors have reached

Wang, Deli

111

Prospects for and tests of hadron calorimetry with silicon  

SciTech Connect

Hadron calorimetry with silicon may provide crucial capabilities in experiments at the high luminosity, high energy colliders of the future, particularly due to silicon's fast intrinsic speed and absolute calibration. The important underlying processes of our understanding of hadron calorimeters are reviewed to set the framework for the presentation of recent calculations of the expected performance of silicon detector based hadron calorimeters. Such devices employing uranium are expected to achieve the compensation condition (that is, the ratio of the most probable electron signal to hadron signal (e/h) is approx.1.0) based on the understanding that has been derived from the uranium-liquid argon and uranium-plastic scintillator systems. In fact, even lead-silicon calorimeters are found to achieve the attractive value for the e/h ratio of 1.16 at 10 GeV. An experimental test of these predictions is underway at CERN by the SICAPO Collaboration. 64 refs., 19 figs.

Brau, James E. [Univ. of Oregon, OR (United States). Dept. of Physics] [Univ. of Oregon, OR (United States). Dept. of Physics; Gabriel, Tony A. [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States); Rancoita, P. G. [INFN, Milan (Italy)] [INFN, Milan (Italy)

1989-03-01

112

Results on the spaghetti calorimeter projective prototype  

NASA Astrophysics Data System (ADS)

The performances of a projective lead/scintillating fibres ("spaghetti") calorimeter made out of rectangular cross-section (32 × 32 mm 2) straight modules alternated with tapering modules at 2.5° are described. Beam test results on energy resolution, constant term suppression, lineshape, uniformity of response, shower position resolution, and electron-pion discrimination are presented. The readout of the fibres in the straight modules, which are sensitive to most of the electromagnetic showers and to part of the hadronic showers, is kept separate from the readout of the fibres of the wedged sections, which are sensitive only to hadronic showers. The lead-to-fibre volume ratio is kept at about 4 to 1 in order to obtain an equal-amplitude response from electrons and hadrons (usually called "compensation"). The origin of the energy resolution constant term has been better understood. This allowed the reduction of the constant term to 0.5%, down from 1.2% measured in older prototypes. The probability of faking abnormally large signals because of channelling effects is also discussed. The position resolution has been measured to range from 0.5 to 1 mm depending on the hit position of the particle. A comparison with the larger hexagonal module design is also made. The efficiency of a hardware thresholding of the wedges' signal as a level one trigger pion veto is discussed along with off-line electron/pion discrimination performances. Since the wedges start at 26 X0 from the calorimeter front face they should show no signal for electromagnetic showers. It was found that electromagnetic showers of 50 GeV generate wedge signals of a maximum of a few tens of MeV. It was also found that the discriminating power is angle dependent, mainly because at small particle-to-fibre angles (? 1°) some electrons can penetrate the calorimeter through channeling, thus exciting a signal in the wedges. At slightly higher tilt angle it is possible to use a lower wedge threshold without loss in electron efficiency. With a beam-to-fibre angle of 3°, 99.6% of pions are rejected with a 98.5% electron efficiency. More recent and preliminary results on energy resolution at energies up to 100 GeV, and on radiation damage of scintillating fibres are also presented.

Bencheikh, B.; Contin, A.; DeSalvo, R.; Hao, W.; Wang, Y. Y.; Lundin, M.; Mondardini, R.; Xu, C.; You, K.

1992-12-01

113

Why a homogeneous dual readout calorimeter won't work  

NASA Astrophysics Data System (ADS)

If the response to a hadronic shower in a semi-infinite uniform calorimeter structure is S relative to the electronic response, then S/E = [fem + (1 - fem)(h/e)], where E is the incident hadron energy, fem is the electronic shower fraction, and h/e is the hadron/electron response ratio. In conventional calorimeters the resolution is dominated by the stochastic variable fem, whose broad, skewed pdf has an energy-dependent mean. The slow increase of the mean with E is responsible for response nonlinearity and the skewness results in a non-Gaussian response. If the cascade is observed in two channels with different values of h/e (typically scintillator(S) and Cherenkov (C)), fem can be eliminated. An energy estimator, linear in C and S, is obtained which is proportional to the incident hadron's energy. The resolution depends upon the contrast in h/e between the two channels. The Cherenkov h/e will be 0.20-0.25. In sampling calorimeters, h/e can be increased to about 0.7 by arranging for preferential absorption of the electromagnetic (EM) shower energy in the absorber (decreasing e) and using a hydrogenous detector (organic scintillator) to enhance h through the contribution of recoil protons in n-p scattering. Neither mechanism is available in a homogeneous crystal or glass scintillator, where h/e is expected to be in the vicinity of 0.4 because of invisible hadronic energy loss and other effects. The h/e contrast is very likely too small to provide the needed energy resolution. We support this conclusion with simple Monte Carlo simulations.

Groom, Don

2012-12-01

114

An automatic adiabatic bomb calorimeter  

Microsoft Academic Search

The paper details the conversion of an existing isothermal bomb calorimeter to an adiabatic calorimeter with automatic control. Thermistors in the inner and outer vessels are included in two arms of an a.c. Wheatstone bridge: any rise in temperature of the inner vessel above that of the outer vessel results in phase reversal of the output voltage from the bridge,

W F Raymond; R J Canaway; C E Harris

1957-01-01

115

The scintillating optical fiber calorimeter (SOFCAL) instrument  

NASA Astrophysics Data System (ADS)

A hybrid detector system is being developed for measuring the cosmic ray elemental composition and energy spectra above approximately GeV/nucleon. This system employs both a conventional 'passive' emulsion chamber and an 'active' ionization calorimeter incorporating scintillating fibers. Emulsion chambers have a proton energy threshold approximately greater than 5 TeV for detectable dark spots in the x-ray films which are used as a visual 'trigger.' The central element of this hybrid system is a calorimeter which has 10 x-y hodoscopic layers of 0.5 mm scintillating fibers interspersed with 4 mm lead plates. The fibers sample the hadronic and electromagnetic showers (cascades) initiated by interactions in the overlying emulsion chamber. The cascades are recorded by two image-intensified charge-coupled device (CCD) cameras which view the ends of the fibers to present orthogonal views. These showers are located and traced with microscopes in the emulsion chamber to provide an energy calibration through standard emulsion chamber methods, and an independent confirmation of the primary particle's charge (which is also measured with a Cerenkov counter above the emulsion chamber). The hybrid system will be used this fall for a balloon-borne measurement of the cosmic ray proton and helium spectra from approximately 400 GeV/n to approximately 10 TeV/n. An 8-hour test flight was performed in September 1995. Details of the detector system and sample results from the test flight are presented.

Christl, Mark J.; Fountain, W. F.; Parnell, Thomas A.; Roberts, F. E.; Benson, C.; Berry, Fred A.; Gregory, J. C.; Takahashi, Yoshiyuki

1996-10-01

116

A fractal version of the pinwheel tiling  

E-print Network

We introduce a fractal version of the pinwheel substitution tiling. There are thirteen basic prototiles, all of which have fractal boundaries. These tiles, along with their reflections and rotations, create a tiling space which is mutually locally derivable from the pinwheel tiling space. The new tiles inherit a substitution rule that, with minimal relabelling, "forces the border", possibly allowing for cohomology computations. Interesting rotational properties are inherited as well.

Frank, Natalie Priebe

2010-01-01

117

Shell tile thermal protection system  

NASA Technical Reports Server (NTRS)

A reusable, externally applied thermal protection system for use on aerospace vehicles subject to high thermal and mechanical stresses utilizes a shell tile structure which effectively separates its primary functions as an insulator and load absorber. The tile consists of structurally strong upper and lower metallic shells manufactured from materials meeting the thermal and structural requirements incident to tile placement on the spacecraft. A lightweight, high temperature package of insulation is utilized in the upper shell while a lightweight, low temperature insulation is utilized in the lower shell. Assembly of the tile which is facilitated by a self-locking mechanism, may occur subsequent to installation of the lower shell on the spacecraft structural skin.

Macconochie, I. O.; Lawson, A. G.; Kelly, H. N. (inventors)

1984-01-01

118

Quality control in tile production  

NASA Astrophysics Data System (ADS)

This work studies visual quality control in ceramics industry. In tile manufacturing, it is important that in each set of tiles, every single tile looks similar. For example, the tiles should have similar color and texture. Our goal is to design a machine vision system that can estimate the sufficient similarity or same appearance to the human eye. Currently, the estimation is usually done by human vision. Differing from other approaches our aim is to use accurate spectral representation of color, and we are comparing spectral features to the RGB color features. A laboratory system for color measurement is built. Experimentations with five classes of brown tiles are presented. We use chromaticity RGB features and several spectral features for classification with the k-NN classifier and with a neural network, called Self-Organizing Map. We can classify many of the tiles but there are several problems that need further investigations: larger training and test sets are needed, illuminations effects must be studied further, and more suitable spectral features are needed with more sophisticated classifiers. It is also interesting to develop further the neural approach.

Kalviainen, Heikki A.; Kukkonen, Saku; Hyvarinen, Timo S.; Parkkinen, Jussi P. S.

1998-10-01

119

Results from pion calibration runs for the H 1 liquid argon calorimeter and comparisons with simulations  

Microsoft Academic Search

We present results on calibration runs performed with pions at the CERN SPS for different modules of the H 1 liquid argon calorimeter which consists of an electromagnetic section with lead absorbers and a hadronic section with steel absorbers. The data cover an energy range from 3.7 to 205 GeV. Detailed comparisons of the data and simulation with GHEISHA 8

B. Andrieu; J. Bán; E. Barrelet; H. Bergstein; G. Bernardi; M. Besançon; E. Binder; H. Blume; K. Borras; V. Boudry; F. Brasse; W. Braunschweig; V. Brisson; A. J. Campbell; T. Carli; M. Colombo; Ch. Coutures; G. Cozzika; M. David; B. Delcourt; L. Delbuono; M. Devel; P. Dingus; A. Drescher; J. Duboc; O. Dünger; R. Ebbinghaus; S. Egli; N. N. Ellis; J. Feltesse; Y. Feng; F. Ferrarotto; W. Flauger; M. Flieser; K. Gamerdinger; J. Gayler; L. Godfrey; L. Goerlich; M. Goldberg; R. Grässler; T. Greenshaw; H. Greif; M. Haguenauer; L. Hajduk; O. Hamon; P. Hartz; V. Haustein; R. Haydar; W. Hildesheim; N. Huot; M.-A. Jabiol; A. Jacholkowska; M. Jaffre; H. Jung; F. Just; C. Kiesling; Th. Kirchhoff; F. Kole; V. Korbel; M. Korn; W. Krasny; J. P. Kubenka; H. Küster; J. Kurzhöfer; B. Kuznik; R. Lander; J.-F. Laporte; U. Lenhardt; P. Loch; D. Lüers; J. Marks; J. Martyniak; T. Merz; B. Naroska; A. Nau; H. K. Nguyen; F. Niebergall; H. Oberlack; U. Obrock; F. Ould-Saada; C. Pascaud; H. B. Pyo; K. Rauschnabel; P. Ribarics; M. Rietz; Ch. Royon; V. Rusinov; N. Sahlmann; E. Sánchez; P. Schacht; P. Schleper; W. von Schlippe; C. Schmidt; D. Schmidt; V. Shekelyan; H. Shooshtari; Y. Sirois; P. Staroba; M. Steenbock; H. Steiner; B. Stella; U. Straumann; J. Turnau; J. Tutas; L. Urban; C. Vallee; M. Vecko; P. Verrecchia; G. Villet; E. Vogel; A. Wagener; D. Wegener; A. Wegner; H.-P. Wellisch; T. P. Yiou; J. Ácek; Ch. Zeitnitz; F. Zomer

1993-01-01

120

Power supply distribution system for calorimeters at the LHC beyond the nominal luminosity  

Microsoft Academic Search

This paper investigates the use of switching converters for the power supply distribution to calorimeters in the ATLAS experiment when the Large Hadron Collider (LHC) will be upgraded beyond the nominal luminosity. Due to the highly hostile environment the converters must operate in, all the main aspects are considered in the investigation, from the selection of the switching converter topologies

P. Tenti; G. Spiazzi; S. Buso; M. Riva; P. Maranesi; F. Belloni; P. Cova; R. Menozzi; N. Delmonte; M. Bernardoni; F. Iannuzzo; G. Busatto; A. Porzio; F. Velardi; A. Lanza; M. Citterio; C. Meroni

2011-01-01

121

Hadron-hadron colliders  

SciTech Connect

The objective is to investigate whether existing technology might be extrapolated to provide the conceptual framework for a major hadron-hadron collider facility for high energy physics experimentation for the remainder of this century. One contribution to this large effort is to formalize the methods and mathematical tools necessary. In this report, the main purpose is to introduce the student to basic design procedures. From these follow the fundamental characteristics of the facility: its performance capability, its size, and the nature and operating requirements on the accelerator components, and with this knowledge, we can determine the technology and resources needed to build the new facility.

Month, M.; Weng, W.T.

1983-06-21

122

Calorimeter probe for the DIII-D divertor  

NASA Astrophysics Data System (ADS)

Heat flux measurements of the DIII-D divertor plate have been obtained with 6 mm spatial resolution using a calorimeter probe. These measurements complement the infrared camera system normally used for heat flux measurements on DIII-D but at higher-spatial resolution. The calorimeter probe is inserted into the tokamak from below to a position which is flush with the lower divertor plate tiles using the divertor materials experimental station (DiMES). The DiMES mechanism allows for retraction of the probe behind a gate valve and removal from the tokamak for modification or calibration. A 6 mm diameter insulated graphite cylinder for collecting energy is mounted within a standard DiMES sample. A 0.8 mm diameter thermocouple, installed 4 mm below the surface, provides a measurement of the temperature during and after the plasma exposure. The 80 ms time constant for the measurement is fast enough to determine heat flux changes during the 5 s plasma discharge and heat flux profiles have been obtained using both fixed strike points and slow strike point sweeps across the calorimeter. Special electronics and isolation is necessary as the sample is in direct electrical contact with the plasma. The calorimeter observes approximately 100 °C temperature rise over one tokamak discharge. The thermocouple signals are typically less than 1 mV and must be amplified near the vacuum feedthrough, passed through a low-pass filter to eliminate magnetic pickup, isolated, and sent to the data acquisition system approximately 8 m away. Initial measurements are included.

Watkins, J. G.; Lasnier, C. J.; Whyte, D. G.; Stangeby, P. C.; Ulrickson, M. A.

2003-03-01

123

Duplicating Curved Tile Surfaces for Pull Testing  

NASA Technical Reports Server (NTRS)

Strength of adhesive bonds to fragile objects with complex shapes tested easily with vacuum chucks. In bond-strength test, contact surface of chuck pressed against matching surface of bonded tile. Vacuum line extending through fine bore in chuck creates vacuum at chuck-and-tile interface. Thus, when chuck pulled away, atmospheric pressure tends to push tile away with chuck. If adhesive resists predetermined pull exerted by chuck on tile, bond acceptable. Originally developed for vacuum chucks used on silica tiles attached to outer surface of Space Shuttle orbiter, used to custom-fabricate chuck for specific tile.

Sebenick, R. H.

1985-01-01

124

Electromagnetic shower properties in a lead-scintillator sampling calorimeter  

NASA Astrophysics Data System (ADS)

The Collider Detector at Fermilab (CDF) is a general-purpose experimental apparatus with an inner tracking detector for measuring charged particles, surrounded by a calorimeter for measurements of electromagnetic and hadronic showers. We describe a GEANT4 simulation and parameterization of the response of the CDF central electromagnetic calorimeter (CEM) to incident electrons and photons. The detector model consists of a detailed description of the CEM geometry and material in the direction of the incident particle's trajectory, and of the passive material between the tracker and the CEM. We use GEANT4 to calculate the distributions of: the energy that leaks from the back of the CEM, the energy fraction sampled by the scintillators, and the energy dependence of the response. We parameterize these distributions to accurately model electron and photon response and resolution in a custom simulation for the measurement of the W boson mass.

Kotwal, Ashutosh V.; Hays, Christopher

2013-11-01

125

Localizing particles showering in a Spaghetti Calorimeter  

NASA Astrophysics Data System (ADS)

We report on the performance of a fine-grained 13-ton compensating lead/scintillating-fiber calorimeter, and in particular on its capability of localizing the particles that produce showers in it. The RMS position resolution was found to be 1.7 mm for electromagnetic showers and 5.1 mm for hadronic showers at 80 GeV, averaged over a tower with an effective radius of 39 mm. Pion-pion separation through analysis of the energy deposit pattern was achieved in more than 95% of the cases for distances down to 8 cm at 80 GeV. Because of the good lateral position resolution, detailed information on the longitudinal shower development could be obtained, with the help of tracking information, when single particles entered the (longitudinally unsegmented) detector at a small angle with respect to the fiber axis. This information made it possible to eliminate the effects of light attenuation in the fibers on the hadronic energy resolution and allowed e/? separation at the 10 -4 level.

Acosta, D.; Buontempo, S.; Calôba, L.; Caria, M.; DeSalvo, R.; Ereditato, A.; Ferrari, R.; Fumagalli, G.; Goggi, G.; Hao, W.; Hartjes, F. G.; Henriques, A.; Linssen, L.; Livan, M.; Maio, A.; Mapelli, L.; Mondardini, M. R.; Ong, B.; Paar, H. P.; Pastore, F.; Pereira, M.; Poggioli, L.; Riccardi, F.; Scheel, C. V.; Schmitz, J.; Seixas, J. M.; Simon, A.; Sivertz, M.; Sonderegger, P.; Souza, M. N.; Thome, Z. D.; Vercesi, V.; Wang, Y.; Wigmans, R.; Xu, C.

1991-07-01

126

Electron Calorimeter Experiment  

NASA Technical Reports Server (NTRS)

Boron loaded scintillators are suitable for measuring secondary neutrons produced by high-energy particles: protons & electrons Neutron flux can be used to discriminate hadron and electro-magnetic particles Combined effectiveness of all e/p discriminators techniques employedTBD Only moderate improvement in detection efficiency for B-10 concentrations >few% in thick moderators Bottom scintillator might serve as cascade penetration counter (TBC)

Adams, James H.

2008-01-01

127

TILINGS BY TRANSLATION MIHAIL N. KOLOUNTZAKIS & MATE MATOLCSI  

E-print Network

as the Escher lizard tiling on the right: In both these floor tilings there is only one tile used, a square tile on the left and a lizard shape tile Date: September 2010. MK & MM: Supported by research grant No 2937 from; we never have to turn it. This is not the case with the lizard tile. To fill the floor the various

Kolountzakis, Mihalis

128

6A Piece of History: Space Shuttle Thermal Tiles! Approximately 24,300 tiles were  

E-print Network

6A Piece of History: Space Shuttle Thermal Tiles! Approximately 24,300 tiles were installed on each space shuttle and each tile was designed to survive 100 trips to space and back. Varying in thickness of the Space Shuttle heat shield provided by the 24,300 tiles in cubic meters? Problem 2 ­ About what

129

Hadron-shower penetration depth and muon production by hadrons of 40, 70, and 100 GeV  

NASA Astrophysics Data System (ADS)

Measurements have been made of muon-production and penetration-depth probabilities (punchthrough probabilities) for showers produced by 40-, 70-, and 100-GeV negative hadrons incident on an iron-scintillator calorimeter of a maximum depth of 4.8 m of steel. These results are also given for incident 70-GeV identified pions and kaons. Comparisons are made of punchthrough probabilities measured with pulse heights from scintillation counters and drift chambers. The transverse-radius distributions of particles in hadronic cascades are presented as a function of depth in the calorimeter.

Sandler, P. H.; Smith, W. H.; Bachmann, K.; Blair, R.; Foudas, C.; King, B.; Lefmann, W. C.; Leung, W. C.; Mishra, S. R.; Quintas, P.; Rabinowitz, S. A.; Sciulli, F.; Seligman, W.; Shaevitz, M. H.; Merritt, F. S.; Oreglia, M. J.; Schellman, H.; Schumm, B.; Bernstein, R. H.; Borcherding, F.; Lamm, M. J.; Marsh, W.; Yovanovitch, D.; Bodek, A.; Budd, H. S.; de Barbaro, P.; Sakumoto, W. K.

1990-08-01

130

Composite treatment of ceramic tile armor  

DOEpatents

An improved ceramic tile armor has a core of boron nitride and a polymer matrix composite (PMC) facing of carbon fibers fused directly to the impact face of the tile. A polyethylene fiber composite backing and spall cover are preferred. The carbon fiber layers are cured directly onto the tile, not adhered using a separate adhesive so that they are integral with the tile, not a separate layer.

Hansen, James G. R. (Oak Ridge, TN); Frame, Barbara J. (Oak Ridge, TN)

2012-01-02

131

Tiling Puzzle Solver University of Virginia  

E-print Network

1 Tiling Puzzle Solver University of Virginia Gabriel Robins "But what am I to do?" said Alice tilings, and we will prove a few of these theorems in class. Consider the following simple tiling puzzle containing the above instance may be found at: www.cs.virginia.edu/~robins/puzzles/trivial #12;2 A less

Robins, Gabriel

132

The CPLEAR electromagnetic calorimeter  

NASA Astrophysics Data System (ADS)

A large-acceptance lead/gas sampling electromagnetic calorimeter (ECAL) was constructed for the CPLEAR experiment to detect photons from decays of ? 0s with momentum p?0 ? 800 MeV/ c. The main purpose of the ECAL is to determine the decay vertex of neutral-kaon decays K 0 ? ? 0? 0 ? 4? and K 0 ? ? 0? 0? 0 ? 6?. This requires a position-sensitive photon detector with high spatial granularity in r-, ?-, and z-coordinates. The ECAL - a barrel without end-caps located inside a magnetic field of 0.44 T - consists of 18 identical concentric layers. Each layer of {1}/{3} radiation length ( X0) contains a converter plate followed by small cross-section high-gain tubes of 2640 mm active length which are sandwiched by passive pick-up strip plates. The ECAL, with a total of 6 X0 has an energy resolution of {?(E)}/{E} ? {13%}/{(E( GeV) }and a position resolution of 4.5 mm for the shower foot. The shower topology allows separation of electrons from pions. The design, construction, read-out electronics, and performance of the detector are described.

Adler, R.; Backenstoss, G.; Bal, F.; Behnke, O.; Bloch, P.; Damianoglou, D.; Dechelette, P.; Dröge, M.; Eckart, B.; Felder, C.; Fetscher, W.; Fidecaro, M.; Garreta, D.; Gerber, H.-J.; Gumplinger, P.; Guyon, D.; Johner, H. U.; Lofstedt, B.; Kern, J.; Kokkas, P.; Krause, H.; Mall, U.; Marin, C.; Nanni, F.; Pagels, B.; Pavlopoulos, P.; Petit, P.; Polivka, G.; Rheme, Ch.; Ruf, T.; Santoni, C.; Schaller, L. A.; Schopper, A.; Tauscher, L.; Tschopp, H.; Weber, P.; Wendler, H.; Witzig, C.; Wolter, M.; Cplear Collaboration

1997-02-01

133

The hadronic crosssections measurements at  

E-print Network

), 4 ­ Z­chamber, 5 ­ CMD-3 superconducting solenoid, 6 ­ calorimeter LXe (400 liters), 7 ­ calorimeter thicker barrel calorimeter 8X0->15X0 better particle separation LXe calorimeter measurement of conversion

134

Single Hadron Response Measurement in ATLAS  

NASA Astrophysics Data System (ADS)

Single hadron response measurement in minimum bias proton-proton collisions at a center of mass energy of ?s = 7 TeV are presented. Together with test-beam results, these measurement form the basis to evaluate the calorimeter energy response uncertainty of jets at high transverse momenta. The single hadrons response is measured in the momentum range of 0.5 to about 20 GeV in-situ, by comparing the calorimeter response of all energy deposits in a cone around an isolated track with the more precisely measured track momenta. The agreement between data and Monte Carlo simulation is on the level of a few percent. Using kaon and ? particles, the calorimeter response of identified pions, proton and anti-proton is studied. The MC simulation describes the energy response of pions and protons well, but differences are observed for anti-protons. It is discussed how the jet calorimeter response uncertainty and its correlation between transverse momentum bins is determined from these measurements.

Starovoitov, Pavel; ATLAS Collaboration

2012-12-01

135

Impacts of Space Shuttle thermal protection system tile on F-15 aircraft vertical tile  

NASA Technical Reports Server (NTRS)

Impacts of the space shuttle thermal protection system (TPS) tile on the leading edge and the side of the vertical tail of the F-15 aircraft were analyzed under different TPS tile orientations. The TPS tile-breaking tests were conducted to simulate the TPS tile impacts. It was found that the predicted tile impact forces compare fairly well with the tile-breaking forces, and the impact forces exerted on the F-15 aircraft vertical tail were relatively low because a very small fraction of the tile kinetic energy was dissipated in the impact, penetration, and fracture of the tile. It was also found that the oblique impact of the tile on the side of the F-15 aircraft vertical tail was unlikely to dent the tail surface.

Ko, W. L.

1985-01-01

136

D-Zero Calorimeter Multiplan  

SciTech Connect

This short report explains the parameters, and their basis, of the D-Zero calorimeter multiplan spread sheet Macintosh Multiplan worksheets have been found to be a valuable asset to the D-Zero design effort. The spread sheet contains parameters (constants) and results that come from the parameters. The full effect of changes in D-Zero calorimeter parameters can be calculated quite easily with Multiplan. When a change in a parameter is made, any results that pertain to that parameter automatically change also. This report will explain how some of the unobvious results were obtained.

Wintercorn, S.J.; /Fermilab

1987-06-15

137

A new precision flow calorimeter  

E-print Network

TO F-11 CONDENSER INLET BAYONET OUTLET SLEEVE SV2 F-11 LIQUID ~ RETLIRN VACUUM BRASS PLATE TEFLON PLUG PRESSURE TRANSDUCER FREON VAPOR INLET VALVE OUTER CALORIMETER QT4 T1A T1B 0 LAMINATED WOOD T2 PLUG PLATINUM RESISTANCE.... The inner calorimeter is suspended from a lower brass plate which is supported from an upper brass plate. The previous apparatus used stainless steel plates, but brass plates were selected in this case since brass is easier to machine and to solder. Also...

Johnson, Mark Gezer

2012-06-07

138

Hadron shower energy and direction measurements using drift chambers  

NASA Astrophysics Data System (ADS)

We report energy and angle resolutions for hadron showers produced in the CCFR iron target-calorimeter. The measurements were made using drift chambers instrumented with FADC readout; showers were produced using a momentum-analyzed hadron test beam from the Fermilab Tevatron at energies of 40, 70, 100, 150, and 200 GeV. Shower energy measurements are compared to measurements using scintillation counters in the same target.

Kinnel, T. S.; Sandler, P. H.; Smith, W. H.; Arroyo, C.; Bachmann, K. T.; Bazarko, A. O.; Bolton, T.; Foudas, C.; King, B. J.; Lefmann, W. C.; Leung, W. C.; Mishra, S. R.; Oltman, E.; Quintas, P. Z.; Rabinowitz, S. A.; Sciulli, F. J.; Seligman, W. G.; Shaevitz, M. H.; Merritt, F. S.; Oreglia, M. J.; Schumm, B. A.; Bernstein, R. H.; Borcherding, F. O.; Fisk, H. E.; Lamm, M. J.; Marsh, W.; Merritt, K. W. B.; Schellman, H.; Yovanovitch, D. D.; Bodek, A.; Budd, H. S.; de Barbaro, P.; Sakumoto, W. K.

1994-03-01

139

Physics impact of the SDC endcap hadronic cracks  

SciTech Connect

The SDC calorimeter has a set of design requirements. Among them is the need for ``hermeticity.`` The calorimeter should not register particle energies which are so badly mismeasured as to induce a significant missing energy. Such a mismeasure would mimic the existence of a neutrino in the event. The extreme case of a catastrophic mismeasure Of particle energy is the total failure to register the energy of a particle due to its loss in a crack or ``dead`` region of the calorimeter. The baseline design of the SDC endcap calorimeter consists of a crackless, monolithic electromagnetic (EM) compartment, followed by an azimuthal array of 1/16 ``wedge`` hadronic (HAD) modules. Of necessity, tolerances in construction lead to azimuthal cracks between adjacent wedge modules. The purpose of this note is to examine the Physics impact of these cracks, and to examine, in detail, their allowable extent.

Green, D.

1993-04-01

140

ELECTRONICS FOR CALORIMETERS AT LHC.  

SciTech Connect

Some principal design features of front-end electronics for calorimeters in experiments at the LHC will be highlighted. Some concerns arising in the transition from the research and development and design phase to the construction will be discussed. Future challenges will be indicated.

RADEKA,V.

2001-09-11

141

Scintillating plate calorimeter mechanical design  

Microsoft Academic Search

Progress on designs for compensating scintillator plate calorimeters will be presented. One design includes a lead composite absorber, fiber readout, and radiation hardened scintillator plates, and the second design has depleted uranium absorbers, wave length shifter plate readout, and scintillator plates. The lead absorber is cast with slots to accept the scintillator in the first design, while the depleted uranium

A. Buehring; N. Hill; T. Kirk; J. Nasiatka; E. Petereit; L. Price; J. Proudfoot; H. Spinka; D. Underwood; M. Burke; D. Hackworth; T. Hordubay; D. Marshik; D. Scherbarth; R. Swensrud

1990-01-01

142

Response of the d0 Calorimeter to Cosmic Ray Muons.  

NASA Astrophysics Data System (ADS)

The D0 Detector at the Fermi National Accelerator Laboratory is a large multi-purpose detector facility designed for the study of proton-antiproton collision products at the center-of-mass energy of 2 TeV. It consists of an inner tracking volume, hermetic uranium/liquid argon sampling calorimetry, and an outer 4pi muon detector. In preparation for our first collider run, the collaboration organized a Cosmic Ray Commissioning Run, which took place from February-May of 1991. This thesis is a detailed study of the response of the central calorimeter to cosmic ray muons as extracted from data collected during this run. We have compared the shapes of the experimentally -obtained pulse height spectra to the Landau prediction for the ionization loss in a continuous thin absorber in the four electromagnetic and four hadronic layers of the calorimeter, and find good agreement after experimental effects are folded in. We have also determined an absolute energy calibration using two independent methods: one which measures the response of the electronics to a known amount of charge injected at the preamplifiers, and one which uses a carry-over of the calibration from a beam test of central calorimeter modules. Both absolute energy conversion factors agree with one another, within their errors. The calibration determined from the test beam carry-over, relevant for use with collider physics data, has an error of 2.3%. We believe that, with further study, a final error of ~1% will be achieved. The theory-to-experiment comparison of the peaks (or most probable values) of the muon spectra was used to determine the layer-to-layer consistency of the muon signal. We find that the mean response in the 3 fine hadronic layers is (12 +/- 2)% higher than that in the 4 electromagnetic layers. These same comparisons have been used to verify the absolute energy conversion factors. The conversion factors work well for the electromagnetic sections.

Kotcher, Jonathan Robert

143

Response of the D0 calorimeter to cosmic ray muons  

SciTech Connect

The D0 Detector at the Fermi National Accelerator Laboratory is a large multipurpose detector facility designed for the study of proton-antiproton collision products at the center-of-mass energy of 2 TeV. It consists of an inner tracking volume, hermetic uranium/liquid argon sampling calorimetry, and an outer 47{pi} muon detector. In preparation for our first collider run, the collaboration organized a Cosmic Ray Commissioning Run, which took place from February--May of 1991. This thesis is a detailed study of the response of the central calorimeter to cosmic ray muons as extracted from data collected during this run. We have compared the shapes of the experimentally-obtained pulse height spectra to the Landau prediction for the ionization loss in a continuous thin absorber in the four electromagnetic and four hadronic layers of the calorimeter, and find good agreement after experimental effects are folded in. We have also determined an absolute energy calibration using two independent methods: one which measures the response of the electronics to a known amount of charge injected at the preamplifiers, and one which uses a carry-over of the calibration from a beam test of central calorimeter modules. Both absolute energy conversion factors agree with one another, within their errors. The calibration determined from the test beam carryover, relevant for use with collider physics data, has an error of 2.3%. We believe that, with further study, a final error of {approx}1% will be achieved. The theory-to-experiment comparison of the peaks (or most probable values) of the muon spectra was used to determine the layer-to-layer consistency of the muon signal. We find that the mean response in the 3 fine hadronic layers is (12 {plus_minus} 2%) higher than that in the 4 electromagnetic layers. These same comparisons have been used to verify the absolute energy conversion factors. The conversion factors work well for the electromagnetic sections.

Kotcher, J.

1992-10-01

144

Some Generalizations of the Pinwheel Tiling Lorenzo Sadun 1  

E-print Network

Some Generalizations of the Pinwheel Tiling by Lorenzo Sadun 1 Mathematics Department University, based on a substitution rule that generalizes the pinwheel tiling of Conway and Radin. In each tiling to the pinwheel tiling of Conway and Radin [R1]. In all cases the tilings have the ``sibling edge

145

Developing tiled projection display systems  

SciTech Connect

Tiled displays are an emerging technology for constructing high-resolution semi-immersive visualization environments capable of presenting high-resolution images from scientific simulation [EVL, PowerWall]. In this way, they complement other technologies such as the CAVE [Cruz-Niera92] or ImmersaDesk, [Czernuszenko97], which by design give up pure resolution in favor of width of view and stereo. However, the largest impact may well be in using large-format tiled displays as one of possibly multiple displays in building ''information'' or ''active'' spaces that surround the user with diverse ways of interacting with data and multimedia information flows [IPSI, Childers00, Raskar98, ROME, Stanford, UNC]. These environments may prove to be the ultimate successor of the desktop metaphor for information technology work.

Hereld, M.; Judson, I. R.; Paris, J.; Stevens, R. L.

2000-06-08

146

Kaleidoscopic Tilings on Surfaces, thisKaleidoscopic Tilings on Surfaces, this Time with the GroupsTime with the Groups  

E-print Network

1 Kaleidoscopic Tilings on Surfaces, thisKaleidoscopic Tilings on Surfaces, this Time · Tilings of surfaces and the plane­ examples, definition · Kaleidoscopic tilings of the hyperbolic plane S be a surface of genus . · Tiling: Covering by polygons "without gaps and overlaps" · Kaleidoscopic: Symmetric

Broughton, S. Allen

147

Water Detection and Removal From Shuttle Tiles  

NASA Astrophysics Data System (ADS)

Current methods for detecting and removing water from the Space Shuttle tiles have proved inadequate in cases of excessive water exposure. This paper describes two new tools that are currently being introduced to Shuttle processing to supplement the existing methods. A capacitive device has been developed to augment the IR camera method of detecting water in the tiles and a vacuum pump system is being tested as a likely replacement to the heat lamps currently used to dry wet tiles.

Youngquist, Robert C.

2003-01-01

148

Hadronic Atoms  

E-print Network

We review the theory of hadronic atoms in QCD+QED. The non-relativistic effective Lagrangian approach, used to describe this type of bound states, is illustrated with the case of pi+pi- atoms. In addition, we discuss the evaluation of isospin-breaking corrections to hadronic atom observables by invoking chiral perturbation theory.

J. Gasser; V. E. Lyubovitskij; A. Rusetsky

2009-03-02

149

The e/[pi] and [pi][sup 0]/[pi] ratios measured, and monochromatic [gamma] and [pi][sup 0] beams explored in the D0 test calorimeter  

SciTech Connect

The e/[pi] response ratio of the DO end calorimeter has been measured by comparing data from 10 to 150 GeV/c electron and pion beams. The intrinsic'' e/[pi] of the fine-hadronic module has also been studied with the pions alone, by selecting [pi][sup 0]-like showers contained within individual layers of the calorimeter. The measurements are compared to GEANT Monte Carlo simulations. A technique to generate monochromatic test beams of photons and neutral pions was successfully investigated. Preliminary results from central calorimeter modules exposed to these beams are discussed, and are compared to calculated expectations.

Tartaglia, M.A.

1992-10-01

150

Multilayer Impregnated Fibrous Thermal Insulation Tiles  

NASA Technical Reports Server (NTRS)

The term "secondary polymer layered impregnated tile" ("SPLIT") denotes a type of ablative composite-material thermal- insulation tiles having engineered, spatially non-uniform compositions. The term "secondary" refers to the fact that each tile contains at least two polymer layers wherein endothermic reactions absorb considerable amounts of heat, thereby helping to prevent overheating of an underlying structure. These tiles were invented to afford lighter-weight alternatives to the reusable thermal-insulation materials heretofore variously used or considered for use in protecting the space shuttles and other spacecraft from intense atmospheric-entry heating.

Tran, Huy K.; Rasky, Daniel J.; Szalai, Christine e.; Hsu, Ming-ta; Carroll, Joseph A.

2007-01-01

151

Global Swath and Gridded Data Tiling  

NASA Technical Reports Server (NTRS)

This software generates cylindrically projected tiles of swath-based or gridded satellite data for the purpose of dynamically generating high-resolution global images covering various time periods, scaling ranges, and colors called "tiles." It reconstructs a global image given a set of tiles covering a particular time range, scaling values, and a color table. The program is configurable in terms of tile size, spatial resolution, format of input data, location of input data (local or distributed), number of processes run in parallel, and data conditioning.

Thompson, Charles K.

2012-01-01

152

Commissioning and calibration of the Zero Degree Calorimeters for the ALICE experiment  

NASA Astrophysics Data System (ADS)

The ALICE experiment at the CERN LHC will study the properties of matter at the extreme temperature and energy density conditions produced in heavy ion collisions. The impact parameter of the collision will be estimated by means of the Zero Degree Calorimeters (ZDC), that measure the energy carried away by the non-interacting (spectator) nucleons. All the spectator nucleons have the same energy, therefore the calorimeter response is proportional to their number, providing a direct information on the centrality of the collision. Two identical sets of hadronic calorimeters are located at opposite sides with respect to the interaction point, 116 m away from it, where the two LHC beams circulate in two different pipes. Each set of detectors consists of a neutron (ZN) calorimeter, placed between the two beam pipes and a proton (ZP) calorimeter, positioned externally to the outgoing beam pipe. The ZDC are spaghetti calorimeters, which detect the Cherenkov light produced by the charged particles of the shower in the quartz fibers, acting as the active material embedded in a dense absorber matrix. In summer 2007 the ZN and ZP calorimeters have been placed on a movable platform and then installed in the LHC tunnel. The results of the commissioning studies are shown. The monitoring systems adopted to control the stability of the PMT responses, i.e. light injection with a laser diode and cosmic rays, are described in detail. The foreseen calibration with e.m. dissociation events in Pb-Pb collisions will also be discussed. Finally the first measurements carried out during the commissioning in the LHC tunnel will be presented.

Gemme, R.; Arnaldi, R.; Chiavassa, E.; Cicalò, C.; Cortese, P.; De Falco, A.; Dellacasa, G.; De Marco, N.; Ferretti, A.; Floris, M.; Gagliardi, M.; Gallio, M.; Luparello, G.; Masoni, A.; Mereu, P.; Musso, A.; Oppedisano, C.; Piccotti, A.; Poggio, F.; Puddu, G.; Scomparin, E.; Serci, S.; Siddi, E.; Stocco, D.; Usai, G.; Vercellin, E.

2009-12-01

153

Massless gaps'' for solenoid + calorimeter  

SciTech Connect

The necessary existence of material in front of the first active element in a calorimeter will degrade the performance of that device. The question is by what factor. The follow up question is what can be done to minimize the damage. These questions are usually of primary importance for liquid argon calorimetry because of the necessity of containment dewars. However, the problem is universal. For example, the Solenoid Detector Collaboration, SDC, has proposed a superconducting coil which would be placed in front of the EM calorimeter. Although much effort has been made to minimize the depth of material in the coil, still the resolution and linearity must be optimized if the SDC goal of precision electromagnetic (EM) calorimetry is to be realized.

Marraffino, J.; Wu, W.; Beretvas, A.; Green, D.; Denisenko, K.; Para, A.

1991-11-01

154

``Massless gaps`` for solenoid + calorimeter  

SciTech Connect

The necessary existence of material in front of the first active element in a calorimeter will degrade the performance of that device. The question is by what factor. The follow up question is what can be done to minimize the damage. These questions are usually of primary importance for liquid argon calorimetry because of the necessity of containment dewars. However, the problem is universal. For example, the Solenoid Detector Collaboration, SDC, has proposed a superconducting coil which would be placed in front of the EM calorimeter. Although much effort has been made to minimize the depth of material in the coil, still the resolution and linearity must be optimized if the SDC goal of precision electromagnetic (EM) calorimetry is to be realized.

Marraffino, J.; Wu, W.; Beretvas, A.; Green, D.; Denisenko, K.; Para, A.

1991-11-01

155

Thermal Characterization of TPS Tiles  

SciTech Connect

The Thermal Protection System (TPS) used on space shuttles protects the metallic structure from the large amounts of heat created during travel through the atmosphere, both on takeoff and reentry. The shuttle experiences high thermo-acoustic loading and impact damage from micro-meteorites, which can cause disbonds, delaminations, chips, cracks, and other defects to the TPS system. To enhance durability and damage tolerance, new TPS tiles with an added protective ceramic-matrix-composite layer are being developed. This paper explores the use of pulsed thermography as a quick, diverse, non-destructive technique, to characterize the TPS system. The pulsed thermography images obtained are presented and analyzed.

Kacmar, C. J. [Anteon Corporation, 5100 Springfield St., Suite 509, Dayton, OH 45431 (United States); LaCivita, K. J.; Jata, K. V. [Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, OH 45433 (United States); Sathish, S. [University of Dayton Research Institute, 300 College Park, Dayton, OH 45469 (United States)

2006-03-06

156

Search for long-lived stopped R-hadrons decaying out of time with pp collisions using the ATLAS detector  

E-print Network

An updated search is performed for gluino, top squark, or bottom squark R-hadrons that have come to rest within the ATLAS calorimeter, and decay at some later time to hadronic jets and a neutralino, using 5.0 and ...

Taylor, Frank E.

157

Automatic CounTilings Doron ZEILBERGER1  

E-print Network

in English, or in an English-like super-high-level programming language, the following command: Write a Maple tiling, but if n > 0 then there are two cases to consider, regarding the bottom-left cell. Case I means an occupied cell and 0 means a still-untiled cell. Case II: It participates in the horizontal tile

Zeilberger, Doron

158

The Sad Case of the Columbine Tiles.  

ERIC Educational Resources Information Center

Analyzes free-speech challenge to school district's guidelines for acceptable expressions on ceramic tiles painted by Columbine High School students to express their feelings about the massacre. Tenth Circuit found that tile painting constituted school-sponsored speech and thus district had the constitutional authority under "Hazelwood School…

Dowling-Sendor, Benjamin

2003-01-01

159

Alternating sign matrices and domino tilings  

Microsoft Academic Search

We introduce a family of planar regions, called Aztec diamonds, and study the ways in which these regions can be tiled by dominoes. Our main result is a generating function that not only gives the number of domino tilings of the Aztec diamond of order $n$ but also provides information about the orientation of the dominoes (vertical versus horizontal) and

Noam Elkies; Greg Kuperberg; Michael Larsen; James Propp

1991-01-01

160

Emittance measurements of RCG coated Shuttle tiles  

NASA Technical Reports Server (NTRS)

The spectral and total normal emittance of the Reaction Cured Glass (RCG) coating used on Shuttle tiles has been measured for surface temperatures of 300 to 1905 K. These measurements were made on two virgin and two flown Shuttle tile samples. Room temperature directional emittance data were also obtained and used to determine the total hemispherical emittance of RCG as a function of temperature. The data obtained from this calculation indicate that the total hemispherical emittance decreases from a room temperature value of 0.83 to a value of 0.76 at 1905 K. The flown Shuttle tiles exhibited a change in the spectral distribution of emittance compared to that of the virgin tile, but no significant trends in the total emittance from a virgin to a flown tile could be established.

Bouslog, Stanley A.; Cunnington, George R., Jr.

1992-01-01

161

Hadron interactions  

SciTech Connect

In this talk I am reviewing recent calculations of properties of multi-hadron systems in lattice QCD. In particular, I am reviewing results of elastic scattering phase shifts in meson-meson, meson-baryon and baryon-baryon systems, as well as discussing results indicating possible existence of bound states in two baryon systems. Finally, calculations of properties of systems with more than two hadrons are presented.

K. Orginos

2011-12-01

162

Measurements of the Time Structure of Hadronic Showers in a Scintillator-Tungsten HCAL  

E-print Network

For calorimeter applications requiring precise time stamping, the time structure of hadronic showers in the detector is a crucial issue. This applies in particular to detector concepts for CLIC, where a hadronic calorimeter with tungsten absorbers is being considered to achieve a high level of shower containment while satisfying strict space constraints. The high hadronic background from gamma gamma to hadrons processes at 3 TeV in combination with the 2 GHz bunch crossing frequency at CLIC requires good time stamping in the detectors. To provide first measurements of the time structure in a highly granular scintillator-tungsten calorimeter, T3B, a dedicated timing experiment, was installed behind the last layer of the CALICE WHCAL prototype, a 30 layer tungsten scintillator calorimeter. T3B consists of 15 small scintillator cells with embedded silicon photomultipliers, read out with fast digitizers over a time window of 2.4 us, and provides detailed measurements of the time structure of the signal. The offline data reconstruction performs an automatic gain calibration using noise events recorded between physics triggers and allows the determination of the arrival time of each photon at the photon sensor. The T3B setup, its calibration and data reconstruction, as well as first results of the time structure of the calorimeter response for 10 GeV pions recorded at the CERN PS confronted with Geant4 simulations using different physics lists are discussed.

Frank Simon; for the CALICE Collaboration

2011-09-14

163

The H 1 liquid argon calorimeter system  

Microsoft Academic Search

The liquid argon calorimeter of the H 1 detector presently taking data at the HERA ep collider at DESY, Hamburg, is described. The main physics requirements and the most salient design features relevant to this calorimeter are given. The aim to have smooth and hermetic calorimetric coverage over the polar angular range 4° <= theta <= 154° is achieved by

B. Andrieu; A. Babayev; J. Bán; E. Banas; E. Barrelet; U. Bassler; D. Bederede; R. Bernard; G. Bernardi; R. Bernier; M. Besançon; J.-C. Biasci; E. Binder; F. Blouzon; H. Blume; K. Borras; V. Boudry; F. Brasse; D. Breton; H. Brettel; V. Brisson; D. Bruncko; U. Buchner; A. Busata; G. Buschhorn; A. J. Campbell; T. Carli; F. Charles; R. Chase; M. Colombo; Ch. Coutures; A. Coville; G. Cozzika; J. Cvach; M. Danilov; M. David; J. David; B. Delcourt; L. del Buono; F. Descamps; M. Devel; A. Deroeck; P. Dingus; K. Djidi; A. Drescher; U. Dretzler; M. Drewe; J. Duboc; F. Dupont; V. Efremenko; F. Eisele; G. Ernst; G. Falley; R. Fang; J. Feltesse; Z. Y. Feng; J. Fent; J. Ferencei; W. Flauger; G. Flügge; J. Formánek; W. Fröchtenicht; K. Gamerdinger; J. Gayler; I. Giesgen; J. Godlewski; L. Goerlich; M. Goldberg; P. Goritchev; L. Gosset; R. Grässler; C. Gregory; H. Greif; G. Grindhammer; M. Haguenauer; L. Hajduk; O. Hamon; P. Hartz; R. Haydar; I. Herynek; W. Hildesheim; J. Hladký; J. Huber; N. Huot; J.-F. Huppert; D. Imbault; M.-A. Jabiol; A. Jacholkowska; M. Jaffré; J. Jeanjean; H. Jung; C. Kiesling; M. Kolander; H. Kolanoski; J. Koll; V. Korbel; M. Korn; W. Krasny; M. Kubantsev; J.-P. Kubenka; H. Küster; M. Kuhlen; T. Kurca; J. Kurzhöfer; J.-F. Laporte; H. Laskus; M. Lemler; U. Lenhardt; P. Loch; D. Lüers; E. Malinovski; J. Marks; F. Martin; J. Martyniak; T. Merz; S. Mikocki; E. Monnier; B. Montés; P. Murín; V. Nagovizin; P. Nayman; A. Nepeipivo; H. K. Nguyen; H. Novakova; G. Nowak; H. Oberlack; U. Obrock; P. Pailler; J.-Y. Parey; C. Pascaud; P. Perrodo; S. Peters; J.-P. Pharabod; W. Pimpl; K. Rauschnabel; A. Reboux; P. Reimer; P. Ribarics; M. Rietz; M. Rudowicz; S. Rusakov; V. Rusinov; K. Rybicki; N. Sahlmann; M. Savitsky; P. Sawallisch; P. Schacht; W. Schmitz; H. Schmücker; M. Seman; V. Shekelyan; I. Sheviakov; Y. Sirois; P. Smirnov; J. Spalek; J. Staeck; P. Staroba; P. Stefan; H. Steiner; J. Stier; J. Strachota; K. Thiele; I. Tichomirov; W. Tribanek; V. Tschernyshov; M. Turiot; J. Turnau; L. Urban; M. Urban; S. Valkar; A. Valkarova; C. Vallée; M. Vecko; P. Verrecchia; G. Villet; D. Wegener; P. Weissbach; H.-P. Wellisch; T. P. Yiou; J. Ácek; P. Závada; Ch. Zeitnitz; F. Zomer

1993-01-01

164

Status of the ATLAS Liquid Argon Calorimeter and its Performance after Three Years of LHC Operation  

NASA Astrophysics Data System (ADS)

The ATLAS experiment is designed to study the proton-proton collisions produced at the Large Hadron Collider(LHC) at CERN. Liquid argon sampling calorimeters are used for all electromagnetic calorimetry covering the pseudo-rapidity region up to 3.2, as well as for hadron calorimetry in the range 1.5-4.9. The electromagnetic calorimeters use lead as passive material and are characterised by an accordion geometry that allows a fast and uniform azimuthal response without any gap. Copper and tungsten were chosen as passive material for the hadron calorimetry; whereas a classic plate geometry was adopted at large polar angles, an innovative one based on cylindrical electrodes with thin argon gaps was designed for the coverage at low angles, where the particles flow is higher. All detectors are housed in three cryostats kept at approximately 89 K. After installation in 2004-2006, the calorimeters were extensively commissioned over the three-year period prior to first collisions in 2009, using cosmic rays and single LHC beams. Since then, around 27 fb-1 of data have been collected at centre of mass energies of 7-8 TeV. During all these stages, the calorimeter has been operating almost optimally, with performance very close to specifications. The talk will cover all aspects of these first years of operation, including the calibration efforts and the data quality assessment procedure. The excellent performance achieved will also be briefly reviewed, especially in the context of the recently announced discovery of the Higgs boson.

Lampl, W.

2014-06-01

165

Cube Tilings of R n and Nonlinear Codes  

E-print Network

Cube Tilings of R n and Nonlinear Codes Jeffrey C. Lagarias Peter W. Shor AT&T Bell Laboratories cubes are constructed. These tilings are specializations of certain families of nonlinear codes over GF(2). These cube-tilings provide building blocks for the construction of cube-tilings such that no two

Shor, Peter W.

166

Solar-energy treatment of ceramic tiles  

NASA Astrophysics Data System (ADS)

The 400 kW Advanced Components Test Facility was used to provide a concentrated source of solar energy for firing ceramic wall tile. A domed top cylindrical cavity with a white refractory fiber lining provided diffuse reflection of the concentrated solar beam directly onto the upper surface of the unfired wall tile. The tile were placed directly on the cavity floor in a circular pattern, centered at 450 intervals so that eight tile could be fired at one time. The tile and cavity walls were instrumented with thermocouples, and pyrometric cones were used to determine temperature distribution within the cavity. The glazed and unglazed solar fired titles were tested for flatness, modulus of rupture, water absorption, porosity, bulk density, apparent specific gravity, percent linear thermal expansion and crystalline phases present in the fired bodies. The major problems encountered are: cracking by thermal shock, and uneven shrinkage and glaze maturity across individual tile. The cavity failed to provide even heating at all eight tile positions.

Harris, J. N.; Clayton, M. E.

1981-12-01

167

Results from an iron-proportional tube calorimeter prototype.  

SciTech Connect

We have studied the energy resolution of a prototype gas tracking calorimeter in a test beam at Fermilab as part of the detector development program for the MINOS long baseline neutrino oscillation experiment. The calorimeter consisted of 25 layers of 1.5 inch thick steel plates interleaved with planes of aluminum proportional tubes. The tube cells are square, with 0.9 cm edges and open tops. Cathode strips were used for read out transverse to the wire cells. The tubes operated with a nonflammable gas mixture of 88% CO{sub 2}, 9.5% isobutane and 2.5% argon which gave an operating range of >500 V (limited by the electronics). We read out the wire signals on the tubes and in some configurations the cathode stripe as well. We studied positrons, pions and muons over a momentum range of 2.5-30 GeV/c and achieved energy resolutions of about 40%/{radical}E for EM and 71%/{radical}E for hadronic showers.

Schoessow, P.

1998-02-03

168

Performance of a liquid argon Accordion calorimeter with fast readout  

NASA Astrophysics Data System (ADS)

A prototype lead-liquid-argon electromagnetic calorimeter with parallel plates and Accordion geometry has been equipped with high speed readout electronics and tested with electron and muon beams at the CERN SPS. For a response peaking time of about 35 ns, fast enough for operation at the future hadron colliders, the energy resolution for electrons is 9.6%/? E[GeV] with a local constant term of 0.3% and a noise contribution of {0.33}/{E[ GeV] }. The spatial accuracy achieved with a detector granularity of 2.7 cm is {3.7 mm}/{E[ GeV] } and the angular resolution 12 mrad at 60 GeV.

Aubert, B.; Bazan, A.; Beaugiraud, B.; Colas, J.; Leflour, T.; Maire, M.; Vialle, J. P.; Wingerter-Seez, I.; Zolnierowski, Y. P.; Gordon, H. A.; Radeka, V.; Rahm, D.; Stephani, D.; Chevalley, J. L.; Fabjan, C. W.; Fournier, D.; Franz, A.; Gildemeister, O.; Jenni, P.; Nessi, M.; Nessi-Tedaldi, F.; Pepe, M.; Richter, W.; Soderqvist, J.; Baze, J. M.; Gosset, L.; Lavocat, P.; Lottin, J. P.; Mansoulie, B.; Meyer, J. P.; Renardy, J. F.; Teiger, J.; Zaccone, H.; Battistoni, G.; Camin, D. V.; Cavalli, D.; Costa, G.; Cravero, A.; Ferrari, A.; Gianotti, F.; Mandelli, L.; Mazzanti, M.; Perini, L.; Pessina, G.; Sala, P.; Sciamanna, M.; Augé, E.; Chase, R.; Chollet, J. C.; de la Taille, C.; Fayard, L.; Jean, P.; Iconomidou-Fayard, L.; Merkel, B.; Noppe, J. M.; Parrour, G.; Pétroff, P.; Repellin, J. P.; Schaffer, A.; Seguin, N.; Unal, G.; Fuglesang, C.; Lefebvre, M.; Towers, S.

1992-10-01

169

High-Strength, Low-Shrinkage Ceramic Tiles  

NASA Technical Reports Server (NTRS)

Addition of refractory fibers and whiskers to insulating tiles composed primarily of fibrous silica, such as those used on the skin of Space Shuttle orbiter, greatly improves properties. New composition suitable for lightweight, thermally-stable mirror blanks and as furnace and kiln insulation. Improved tiles made with current tile-fabrication processes. For given density, tiles containing silicon carbide and boron additives stronger in flexure than tiles made from silica alone. In addition, tiles with additives nearly immune to heat distortion, whereas pure-silica tiles shrink and become severely distorted.

Wheeler, W. H.; Creedon, J. F.

1986-01-01

170

Aerogel: Tile Composites Toughen a Brittle Superinsulation  

NASA Technical Reports Server (NTRS)

Pure aerogels, though familiar in the laboratory for decades as exotic lightweight insulators with unusual physical properties, have had limited industrial applications due to their low strength and high brittleness. Composites formed of aerogels and the ceramic fiber matrices like those used as space shuttle tiles bypass the fragility of pure aerogels and can enhance the performance of space shuttle tiles in their harsh operating environment. Using a layer of aerogel embedded in a tile may open up a wide range of applications where thermal insulation, gas convection control and mechanical strength matter.

White, Susan; Rasky, Daniel; Arnold, James O. (Technical Monitor)

1998-01-01

171

Aerogel: Tile Composites Toughen a Brittle Superinsulation  

NASA Technical Reports Server (NTRS)

Pure aerogels, though familiar in the laboratory for decades as exotic lightweight insulators with unusual physical properties, have had limited industrial applications due to their low strength and high brittleness. Composites formed of aerogels and the ceramic fiber matrices used as space shuttle tiles bypass the fragility of pure aerogels and can enhance the performance of space shuttle tiles in their harsh operating environment. Using a layer of aerogel embedded in a tile may open up a wide range of applications where thermal insulation, gas convection control and mechanical strength matter.

White, Susan; Rasky, Daniel; Arnold, James O. (Technical Monitor)

1998-01-01

172

Remotely replaceable tokamak plasma limiter tiles  

DOEpatents

U-shaped tiles placed end-to-end over a pair of parallel runners have two rods which engage L-shaped slots. A sliding bar between the runners has grooves with clips to retain the rods pressed into receiving legs of the L-shaped slots in the runners. Sliding the bar in the direction of retaining legs of the L-shaped slots latches the tiles in place over the wall. Resilient contact strips under the parallel sides of the U-shaped tile assure thermal and electrical contact with the wall. 6 figs.

Gallix, R.

1987-12-09

173

Penrose Tilings as Jammed Solids  

NASA Astrophysics Data System (ADS)

Penrose tilings form lattices, exhibiting fivefold symmetry and isotropic elasticity, with inhomogeneous coordination much like that of the force networks in jammed systems. Under periodic boundary conditions, their average coordination is exactly four. We study the elastic and vibrational properties of rational approximants to these lattices as a function of unit-cell size NS and find that they have of order ?NS zero modes and states of self-stress and yet all their elastic moduli vanish. In their generic form, obtained by randomizing site positions, their elastic and vibrational properties are similar to those of particulate systems at jamming with a nonzero bulk modulus, vanishing shear modulus, and a flat density of states.

Stenull, Olaf; Lubensky, T. C.

2014-10-01

174

HEIGHT FUNCTION ON DOMINO TILINGS We first define the height function on a domino tiling (as done in [1])  

E-print Network

HEIGHT FUNCTION ON DOMINO TILINGS 1. Summary We first define the height function on a domino tiling() Iv (f(z))dz. 2.1 The Height Function. Given a domino tiling on the usual setup of black and white squares (checkerboard tiling), the height function h is a function from the ver- tices of the domino

Lei, Guo-Ying "Helen"

175

A study of the energy dependence of the mean, truncated mean, and most probable energy deposition of high-energy muons in sampling calorimeters  

NASA Astrophysics Data System (ADS)

We have extracted the momentum dependence of the mean, the truncated mean and the most probable value of the energy deposited in a segmented, iron-scintillator, hadron calorimeter by high-energy muons. Data were drawn from a sample of momentum-analyzed, high-energy muons produced in charged-current neutrino interactions. The truncated mean energy deposition of high-energy muons traversing 20 calorimeter segments increases by approximately 16% per {100 GeV}/{c} increase in muon momentum over the range {25-125 GeV}/{c}; the most probable energy deposition increases by approximately 7%. These results are important for experiments at high-energy colliders (e.g., Tevatron, SSC and LHC) which use the {dE }/{dx } of high-energy muons to calibrate the response of electromagnetic and hadron calorimeters with tower geometry. The data are in qualitative agreement with GEANT3 (v3.15/308a) simulations.

Auchincloss, P. S.; de Barbaro, P.; Bodek, A.; Budd, H.; Pillai, M.; Qun, F.; Sakumoto, W. K.; Merritt, F. S.; Oreglia, M. J.; Schumm, B.; Bolton, T.; Arroyo, C.; Bachmann, K. T.; Bazarko, A. O.; Blair, R. E.; Foudas, C.; King, B. J.; Lefmann, W. C.; Leung, W. C.; Mishra, S. R.; Oltman, E.; Quintas, P. Z.; Rabinowitz, S. A.; Sciulli, F.; Seligman, W. G.; Shaevitz, M. H.; Bernstein, R. H.; Borcherding, F.; Fisk, H. E.; Lamm, M.; Marsh, W.; Merritt, K. W. B.; Schellman, H.; Yovanovitch, D.; Kinnel, T. S.; Sandler, P.; Smith, W. H.

1994-04-01

176

Applied physics: The virtues of tiling  

NASA Astrophysics Data System (ADS)

A cracked metal film on an elastic substrate has been shown to provide ultrahigh sensitivity in detecting mechanical vibrations. The result draws inspiration from principles of tiling that apply to many biological systems. See Letter p.222

Fratzl, Peter

2014-12-01

177

Experimental aerodynamic heating to simulated shuttle tiles  

NASA Technical Reports Server (NTRS)

The heat transfer to simulated shuttle thermal protection system tiles was investigated experimentally using a highly instrumented metallic thin wall tile arranged with other metal tiles in a staggered tile array. Cold-wall heating rate data for laminar and turbulent flow were obtained in the Langley 8-foot high temperature tunnel at a nominal Mach number of 7, a nominal total temperature of 3300 R, free-stream unit Reynolds number from 3.4 x 10 to the 5th power to 2.2 x 10 to the 6th power per foot, and free-stream dynamic pressure of 1.8 psia to 9.1 psia. Experimental data are presented to illustrate the effects of flow angularity and gap width on both local peak heating and overall heating loads.

Avery, D. E.; Kerr, P. A.; Wieting, A. R.

1983-01-01

178

Experimental aerodynamic heating to simulated Shuttle tiles  

NASA Technical Reports Server (NTRS)

The heat transfer to simulated Shuttle thermal protection system tiles was investigated experimentally using a highly instrumented metallic thin wall tile arranged with other metal tiles in a staggered tile array. Cold-wall heating rate data for laminar and turbulent flow were obtained in the Langley 8-Foot High-Temperature Tunnel at a nominal Mach number of 7, a nominal total temperature of 3300 deg R, free-stream unit Reynolds number from 340,000 to 2,200,000 per foot, and free-stream dynamic pressure of 1.8 to 9.1 psia. Experimental data are presented to illustrate the effects of flow angularity and gap width on both local peak heating and overall heating loads.

Avery, D. E.; Kerr, P. A.; Wieting, A. R.

1983-01-01

179

Lessons from Monte Carlo simulations of the performance of a dual-readout fiber calorimeter  

NASA Astrophysics Data System (ADS)

The RD52 calorimeter uses the dual-readout principle to detect both electromagnetic and hadronic showers, as well as muons. Scintillation and Cherenkov light provide the two signals which, in combination, allow for superior hadronic performance. In this paper, we report on detailed, GEANT4 based Monte Carlo simulations of the performance of this instrument. The results of these simulations are compared in great detail to measurements that have been carried out and published by the DREAM Collaboration. This comparison makes it possible to understand subtle details of the shower development in this unusual particle detector. It also allows for predictions of the improvement in the performance that may be expected for larger detectors of this type. These studies also revealed some inadequacies in the GEANT4 simulation packages, especially for hadronic showers, but also for the Cherenkov signals from electromagnetic showers.

Akchurin, N.; Bedeschi, F.; Cardini, A.; Cascella, M.; De Pedis, D.; Ferrari, R.; Fracchia, S.; Franchino, S.; Fraternali, M.; Gaudio, G.; Genova, P.; Hauptman, J.; La Rotonda, L.; Lee, S.; Livan, M.; Meoni, E.; Pinci, D.; Policicchio, A.; Saraiva, J. G.; Scuri, F.; Sill, A.; Venturelli, T.; Wigmans, R.

2014-10-01

180

Cutting Symmetrical Recesses In Soft Ceramic Tiles  

NASA Technical Reports Server (NTRS)

Simple tool cuts hemispherical recesses in soft ceramic tiles. Designed to expose wires of thermocouples embedded in tiles without damaging leads. Creates neat, precise holes around wires. End mill includes axial hole to accommodate thermocouple wires embedded in material to be cut. Wires pass into hole without being bent or broken. Dimensions in inches. Used in place of such tools as dental picks, tweezers, spatulas, and putty knives.

Nesotas, Tony C.; Tyler, Brent

1989-01-01

181

The isoperimetric problem for pinwheel tilings  

Microsoft Academic Search

In aperiodic “pinwheel” tilings of the plane there exist unions of tiles with ratio (area)\\/(perimeter)2 arbitrarily close to that of a circle. Such approximate circles can be constructed with arbitrary center and any sufficiently large radius. The existence of such circles follows from the metric on pinwheel space being almost Euclidean at large distances; ifP andQ are points separated by

Charles Radin; Lorenzo Sadun

1996-01-01

182

The Pinwheel Tilings of the Plane  

Microsoft Academic Search

this paper, and many long hours of discussions with DaniBerend.2 CHARLES RADINmeans "disordered" in the probabilistic sense used to study patterns in nonlineardynamics. Within the field of logic, there was a brief line of developmentin which "very complicated" means "nonrecursive".All published examples, of finite sets of prototiles which can only tile theplane nonperiodically, have the feature that in every tiling

Charles Radin

1994-01-01

183

Manufacture of ceramic tiles from fly ash  

DOEpatents

The present invention relates to a process for forming glass-ceramic tiles. Fly ash containing organic material, metal contaminants, and glass forming materials is oxidized under conditions effective to combust the organic material and partially oxidize the metallic contaminants and the glass forming materials. The oxidized glass forming materials are vitrified to form a glass melt. This glass melt is then formed into tiles containing metallic contaminants.

Hnat, James G. (Collegeville, PA); Mathur, Akshay (Tampa, FL); Simpson, James C. (Perkiomenville, PA)

1999-01-01

184

Development of two types of high temperature calorimeters  

Microsoft Academic Search

For heat capacity measurement of ceramic materials at high temperatures above 1500K, two new calorimeters, i.e. a high speed cooling calorimeter and an advanced-direct heating pulse calorimeter, have been developed in our laboratory. The high speed cooling calorimeter is assembled of an induction heating furnace, a paraboloidal mirror and a high speed six-wavelength pyrometer. In this calorimeter, the heat capacity

Tsuneo Matsui; Yuji Arita; Kunihiro Watanabe

2000-01-01

185

The CMS-HF Forward Calorimeter Commissioning  

NASA Astrophysics Data System (ADS)

The CMS HF Calorimeter was the first detector to be lowered into the cavern at UX5. It was placed in the garage position during the lowering of the rest of the big CMS pieces. The commissioning of the hardware parts is continuing, especially integrating the HF and completing the monitoring systems, such as, online laser, LED and radioactive source monitoring. Also a special monitor system for the radiation damage (raddam) of the quartz fibers is being implemented. Calibration measurements of the calorimeter had already started even before the lowering. Progress in the calibration work and current plans for the HF calorimeter during the low luminosity run will be summarized.

Gülmez, E.

2008-06-01

186

Power supply distribution system for calorimeters at the LHC beyond the nominal luminosity  

NASA Astrophysics Data System (ADS)

This paper investigates the use of switching converters for the power supply distribution to calorimeters in the ATLAS experiment when the Large Hadron Collider (LHC) will be upgraded beyond the nominal luminosity. Due to the highly hostile environment the converters must operate in, all the main aspects are considered in the investigation, from the selection of the switching converter topologies to the thermal analysis of components and PCBs, with attention to reliability issues of power devices subject to ionizing radiations. The analysis focuses on the particular, but crucial, case of the power supplies for calorimeters, though several outcomes of the research can profitably be applied to other detectors like muon chambers. Research co-funded by the Italian Ministero dell'Istruzione, dell'Università e della Ricerca (MIUR) and the Istituto Nazionale di Fisica Nucleare (INFN), under the PRIN 2007 program.

Tenti, P.; Spiazzi, G.; Buso, S.; Riva, M.; Maranesi, P.; Belloni, F.; Cova, P.; Menozzi, R.; Delmonte, N.; Bernardoni, M.; Iannuzzo, F.; Busatto, G.; Porzio, A.; Velardi, F.; Lanza, A.; Citterio, M.; Meroni, C.

2011-06-01

187

Progress in hadronic physics modelling in Geant4  

NASA Astrophysics Data System (ADS)

Geant4 offers a set of models to simulate hadronic showers in calorimeters. Recent improvements to several models relevant to the modelling of hadronic showers are discussed. These include improved cross sections, a revision of the FTF model, the addition of quasi-elastic scattering to the QGS model, and enhancements in the nuclear precompound and de-excitation models. The validation of physics models against thin target experiments has been extended especially in the energy region 10 GeV and below. Examples of new validation results are shown.

Apostolakis, John; Folger, Gunter; Grichine, Vladimir; Heikkinen, Aatos; Howard, Alexander; Ivanchenko, Vladimir; Kaitaniemi, Pekka; Koi, Tatsumi; Kosov, Mikhail; Quesada, Jose Manuel; Ribon, Alberto; Uzhinskiy, Vladimir; Wright, Dennis

2009-04-01

188

Transportable high sensitivity small sample radiometric calorimeter  

SciTech Connect

A new small-sample, high-sensitivity transportable radiometric calorimeter, which can be operated in different modes, contains an electrical calibration method, and can be used to develop secondary standards, will be described in this presentation. The data taken from preliminary tests will be presented to indicate the precision and accuracy of the instrument. The calorimeter and temperature-controlled bath, at present, require only a 30-in. by 20-in. tabletop area. The calorimeter is operated from a laptop computer system using unique measurement module capable of monitoring all necessary calorimeter signals. The calorimeter can be operated in the normal calorimeter equilibration mode, as a comparison instrument, using twin chambers and an external electrical calibration method. The sample chamber is 0.75 in (1.9 cm) in diameter by 2.5 in. (6.35 cm) long. This size will accommodate most {sup 238}Pu heat standards manufactured in the past. The power range runs from 0.001 W to <20 W. The high end is only limited by sample size.

Wetzel, J.R.; Biddle, R.S.; Cordova, B.S.; Sampson, T.E.; Dye, H.R.; McDow, J.G.

1998-12-31

189

An imaging calorimeter for ACCESS concept study  

NASA Astrophysics Data System (ADS)

A mission concept study to define the "Advanced Cosmic-ray Composition Experiment for Space Station (ACCESS)" was sponsored by the National Aeronautics and Space Administration (NASA). The ACCESS instrument complement contains a transition radiation detector and an ionization calorimeter to measure the spectrum of protons, helium, and heavier nuclei up to ~1015 eV to search for the limit of S/N shock wave acceleration, or evidence for other explanations of the spectra. Several calorimeter configurations have been studied, including the "baseline" totally active bismuth germanate instrument and sampling calorimeters utilizing various detectors. The Imaging Calorimeter for ACCESS (ICA) concept comprises a carbon target and a calorimeter using a high atomic number absorber sampled approximately each radiation length (rl) by thin scintillating fiber (SCIFI) detectors. The main features and options of the ICA instrument configuration are described in this paper. Since direct calibration is not possible over most of the energy range, the best approach must be decided from simulations of calorimeter performance extrapolated from CERN calibrations at 0.375 TeV. This paper presents results from the ICA simulations study.

Parnell, T. A.; Adams, J. H.; Binns, R. W.; Christl, M. J.; Derrickson, J. H.; Fountain, W. F.; Howell, L. W.; Gregory, J. C.; Hink, P. L.; Israel, M. H.; Kippen, R. M.; Lee, J.; Pendleton, G. N.; Takahashi, Y.; Watts, J. W.

2001-08-01

190

Measurement of exclusive branching fractions of hadronic one-prong tau decays  

Microsoft Academic Search

We have measured the branching fractions for the hadronic ? decays, ? ? ?Kn?° ? (0? n ?3), with the L3 detector at LEP. Multiphoton final states are analyzed using the fine-grained, high-resolution electromagnetic calorimeter. The decay channels are identified using a neural network method. The results are: BR(? ? ?K?) = (11.82 ± 0.26 ± 0.43) %, BR(? ?

M. M. Accarri; A. Adam; O. Adriani; M. Aguilar-Benitez; S. Ahlen; J. Alcaraz; A. Aloisio; G. Alverson; M. G. Alviggi; G. Ambrosi; Q. An; H. Anderhub; A. L. Anderson; V. P. Andreev; T. Angelescu; L. Antonov; D. Antreasyan; G. Alkhazov; P. Arce; A. Arefiev; T. Azemoon; T. Aziz; P. V. K. S. Baba; P. Bagnaia; J. A. Bakken; L. Baksay; R. C. Ball; S. Banerjee; K. Banicz; R. Barillère; L. Barone; A. Baschirotto; M. Basile; R. Battiston; A. Bay; F. Becattini; U. Becker; F. Behner; Gy. L. Bencze; J. Berdugo; P. Berges; B. Bertucci; B. L. Betev; M. Biasini; A. Biland; G. M. Bilei; R. Bizzarri; J. J. Blaising; G. J. Bobbink; R. Bock; A. Böhm; B. Borgia; A. Boucham; D. Bourilkov; M. Bourquin; D. Boutigny; B. Bouwens; E. Brambilla; J. G. Branson; V. Brigljevic; I. C. Brock; M. Brooks; A. Bujak; J. D. Burger; W. J. Burger; C. Burgos; J. Busenitz; A. Buytenhuijs; A. Bykov; X. D. Cai; M. Capell; G. Cara Romeo; M. Caria; G. Carlino; A. M. Cartacci; J. Casaus; R. Castello; N. Cavallo; M. Cerrada; M. Cesaroni; M. Chamizo; Y. H. Chang; U. K. Chaturvedi; M. Chemarin; A. Chen; C. Chen; G. Chen; H. F. Chen; H. S. Chen; M. Chen; G. Chiefari; C. Y. Chien; M. T. Choi; S. Chung; L. Cifarelli; F. Cindolo; C. Civinini; I. Clare; R. Clare; T. E. Coan; H. O. Cohn; G. Coignet; N. Colino; S. Costantini; F. Cotorobai; B. de la Cruz; X. T. Cui; X. Y. Cui; T. S. Dai; R. D'Alessandro; R. de Asmundis; A. Degré; K. Deiters; E. Dénes; P. Denes; F. Denotaristefani; D. Dibitonto; M. Diemoz; H. R. Dimitrov; C. Dionisi; M. Dittmar; L. Djambazov; I. Dorne; M. T. Dova; E. Drago; D. Duchesneau; F. Duhem; P. Duinker; I. Duran; S. Dutta; S. Easo; H. El Mamouni; A. Engler; F. J. Eppling; F. C. Erné; P. Extermann; R. Fabbretti; M. Fabre; S. Falciano; A. Favara; J. Fay; M. Felcini; T. Ferguson; D. Fernandez; G. Fernandez; F. Ferroni; H. Fesefeldt; E. Fiandrini; J. H. Field; F. Filthaut; P. H. Fisher; G. Forconi; L. Fredj; K. Freudenreich; M. Gailloud; Yu. Galaktionov; E. Gallo; S. N. Ganguli; P. Garcia-Abia; S. Gentile; J. Gerald; N. Gheordanescu; S. Giagu; S. Goldfarb; J. Goldstein; Z. F. Gong; E. Gonzalez; A. Gougas; D. Goujon; G. Gratta; M. W. Gruenewald; C. Gu; M. Guanziroli; V. K. Gupta; A. Gurtu; H. R. Gustafson; L. J. Gutay; A. Hasan; D. Hauschildt; J. T. He; T. Hebbeker; M. Hebert; A. Hervé; K. Hilgers; H. Hofer; H. Hoorani; S. R. Hou; G. Hu; B. Ille; M. M. Ilyas; V. Innocente; H. Janssen; B. N. Jin; L. W. Jones; P. de Jong; I. Josa-Mutuberria; A. Kasser; R. A. Khan; Yu. Kamyshkov; P. Kapinos; J. S. Kapustinsky; Y. Karyotakis; M. Kaur; S. Khokhar; M. N. Kienzle-Focacci; D. Kim; J. K. Kim; S. C. Kim; Y. G. Kim; W. W. Kinnison; A. Kirkby; D. Kirkby; J. Kirkby; S. Kirsch; W. Kittel; A. Klimentov; A. C. König; E. Koffeman; O. Kornadt; V. Koutsenko; A. Koulbardis; R. W. Kraemer; T. Kramer; V. R. Krastev; W. Krenz; H. Kuijten; K. S. Kumar; A. Kunin; P. Ladron de Guevara; G. Landi; D. Lanske; S. Lanzano; P. Laurikainen; A. Lebedev; P. Lebrun; P. Lecomte; P. Lecoq; P. Le Coultre; D. M. Lee; J. S. Lee; K. Y. Lee; I. Leedom; C. Leggett; J. M. Le Goff; R. Leiste; M. Lenti; E. Leonardi; P. Levtchenko; C. Li; E. Lieb; W. T. Lin; F. L. Linde; B. Lindemann; L. Lista; Y. Liu; W. Lohmann; E. Longo; W. Lu; Y. S. Lu; J. M. Lubbers; K. Lübelsmeyer; C. Luci; D. Luckey; L. Ludovici; L. Luminari; W. Lustermann; W. G. Ma; M. MacDermott; M. Maity; L. Malgeri; R. Malik; A. Malinin; C. Maña; S. Mangla; M. Maolinbay; P. Marchesini; A. Marin; J. P. Martin; F. Marzano; G. G. G. Massaro; K. Mazumdar; P. McBride; T. McMahon; D. McNally; S. Mele; M. Merk; L. Merola; M. Meschini; W. J. Metzger; Y. Mi; A. Mihul; G. B. Mills; Y. Mir; G. Mirabelli; J. Mnich; M. Möller; V. Monaco; B. Monteleoni; R. Morand; S. Morganti; N. E. Moulai; R. Mount; S. Müller; E. Nagy; M. Napolitano; F. Nessi-Tedaldi; H. Newman; M. A. Niaz; A. Nippe; H. Nowak; G. Organtini; R. Ostonen; D. Pandoulas; S. Paoletti; P. Paolucci; G. Pascale; G. Passaleva; S. Patricelli; T. Paul; M. Pauluzzi; C. Paus; F. Pauss; Y. J. Pei; S. Pensotti; D. Perret-Gallix; A. Pevsner; D. Piccolo; M. Pieri; J. C. Pinto; P. A. Piroué; E. Pistolesi; F. Plasil; V. Plyaskin; M. Pohl; V. Pojidaev; H. Postema; N. Produit; J. M. Qian; K. N. Qureshi; R. Raghavan; G. Rahal-Callot; P. G. Rancoita; M. Rattaggi; G. Raven; P. Razis; K. Read; M. Redaelli; D. Ren; Z. Ren; M. Rescigno; S. Reucroft; A. Ricker; S. Riemann; B. C. Riemers; K. Riles; O. Rind; H. A. Rizvi; S. Ro; A. Robohm; F. J. Rodriguez; B. P. Roe; M. Röhner; S. Röhner; L. Romero; S. Rosier-Lees; R. Rosmalen; Ph. Rosselet; W. van Rossum; S. Roth; A. Rubbia; J. A. Rubio; H. Rykaczewski; J. Salicio; E. Sanchez; G. S. Sanders; A. Santocchia; M. E. Sarakinos; S. Sarkar; G. Sartorelli; M. Sassowsky; G. Sauvage; H. Schäfer; V. Schegelsky; D. Schmitz; P. Schmitz; M. Schneegans; N. Scholz; H. Schopper; D. J. Schotanus; S. Shotkin; H. J. Schreiber; J. Shukla

1995-01-01

191

Proofreading Tile Sets: Error Correction for Algorithmic Self-Assembly  

Microsoft Academic Search

For robust molecular implementation of tile-based algorith- mic self-assembly, methods for reducing errors must be developed. Pre- vious studies suggested that by control of physical conditions, such as temperature and the concentration of tiles, errors (\\

Erik Winfree; Renat Bekbolatov

2003-01-01

192

Random and ordered phases of off-lattice rhombus tiles.  

PubMed

We study the covering of the plane by nonoverlapping rhombus tiles, a problem well studied only in the limiting case of dimer coverings of regular lattices. We go beyond this limit by allowing tiles to take any position and orientation on the plane, to be of irregular shape, and to possess different types of attractive interactions. Using extensive numerical simulations, we show that at large tile densities there is a phase transition from a fluid of rhombus tiles to a solid packing with broken rotational symmetry. We observe self-assembly of broken-symmetry phases, even at low densities, in the presence of attractive tile-tile interactions. Depending on the tile shape and interactions, the solid phase can be random, possessing critical orientational fluctuations, or crystalline. Our results suggest strategies for controlling tiling order in experiments involving "molecular rhombi." PMID:22400760

Whitelam, Stephen; Tamblyn, Isaac; Beton, Peter H; Garrahan, Juan P

2012-01-20

193

Improvement of PVC floor tiles by gamma radiation  

NASA Astrophysics Data System (ADS)

Gamma radiation presents a unique method of transforming highly plasticized PVC floor tiles, manufactured at high speed through injection moulding, into a high quality floor covering at a cost at least 30% less than similarly rated rubber tiles. A specially formulated PVC compound was developed in collaboration with a leading manufacturer of floor tiles. These tiles are gamma crosslinked in its shipping cartons to form a dimensionally stable product which is highly fire resistant and inert to most chemicals and solvents. The crosslinked tiles are more flexible than the highly filled conventional PVC floor tiles, scratch resistant and have a longer lifespan and increased colour fastness. These tiles are also less expensive to install than conventional rubber tiles.

du Plessis, T. A.; Badenhorst, F.

194

AIRBORNE ASBESTOS CONCENTRATIONS DURING BUFFING OF RESILIENT FLOOR TILE  

EPA Science Inventory

Although asbestos-containing resilient floor tiles are considered nonfriable, the frictional forces exerted on the tile during routine maintenance operations can generate asbestos-containing structures. tudy was conducted to determine the level of airborne asbestos concentrations...

195

Hadron spectroscopy  

SciTech Connect

Heavy quark systems and glueball candidates, the particles which are relevant to testing QCD, are discussed. The review begins with the heaviest spectroscopically observed quarks, the b anti-b bound states, including the chi state masses, spins, and hadronic widths and the non-relativistic potential models. Also, P states of c anti-c are mentioned. Other heavy states are also discussed in which heavy quarks combine with lighter ones. The gluonium candidates iota(1460), theta(1700), and g/sub T/(2200) are then covered. The very lightest mesons, pi-neutral and eta, are discussed. 133 refs., 24 figs., 16 tabs. (LEW)

Cooper, S.

1985-10-01

196

Nematic colloidal tilings as photonic materials  

NASA Astrophysics Data System (ADS)

Colloidal platelets are explored as elementary building blocks for the shape-controlled assembly of crystalline and quasicrystalline tilings. Using three-dimensional (3D) numerical modelling based on the minimization of Landau-de Gennes free energy for modelling of colloids combined with Finite Difference Time Domain calculations for optics, we demonstrate the self-assembly and optical (transmission) properties of triangular, square and pentagonal sub-micrometer sized platelets in a thin layer of nematic liquid crystal. Interactions between platelets are explored, providing an insight into the assembly process. Two-dimensional tilings of various-shaped colloidal platelets are demonstrated, and their use as diffraction layers is explored by using FDTD simulations. Designing symmetry-breaking surface anchoring profiles on pentagonal platelets opens also a possibility to achieve interactions that could lead to tilings with non-crystalline symmetry.

Ravnik, M.; Dontabhaktuni, J.; Cancula, M.; Zumer, S.

2014-02-01

197

Mechanical and thermal design of the CEBAF Hall a beam calorimeter  

SciTech Connect

A calorimeter is being fabricated to provide 0.5% - 1.0% absolute measurement of the beam current in the Hall A end station of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLAB). Modern powder metallurgy processes have produced high density, high thermal conductivity tungsten-copper composite materials that minimize electromagnetic and hadronic energy loss while maintaining a rapid thermal response time. Heat leaks are minimized by mounting the mass in vacuum on glass ceramic mounts. A conduction cooling scheme utilizes an advanced carbon fiber compliant thermal interface material. Transient finite difference and finite element models were developed to estimate heat leaks and thermal response times.

M. Bevins; A. Day; P. Degtiarenko; L.A. Dillon-Townes; A. Freyberger; R. Gilman; A. Saha; S. Slachtouski

2005-05-16

198

PV cohomology of pinwheel tilings, their integer group of  

E-print Network

PV cohomology of pinwheel tilings, their integer group of coinvariants and gap-labelling Ha¨ija MOUSTAFA Abstract In this paper, we first remind how we can see the "hull" of the pinwheel tiling] to define it for pinwheel tilings. We then prove that this cohomology is isomorphic to the integer Cech

Paris-Sud XI, Université de

199

Mapping of Tile Drains in Hoagland Watershed for Simulating the  

E-print Network

in Hoagland watershed from high resolution aerial photographs using image processing techniques. To estimate;10 Automated mapping of tile lines using image processing techniques Final tile lines map Merging of horizontal Purdue University, West Lafayette, IN #12;Outline Introduction Mapping of tile lines using image

Cherkauer, Keith

200

Two Views of Islam: Ceramic Tile Design and Miniatures.  

ERIC Educational Resources Information Center

Describes an art project focusing on Islamic art that consists of two parts: (1) ceramic tile design; and (2) Islamic miniatures. Provides background information on Islamic art and step-by-step instructions for designing the Islamic tile and miniature. Includes learning objectives and resources on Islamic tile miniatures. (CMK)

Macaulay, Sara Grove

2001-01-01

201

Improving Emittance of High-Temperature Insulating Tile  

NASA Technical Reports Server (NTRS)

Simple addition to ceramic insulating tiles provides backup properties that minimize transfer of heat through tiles when their surfaces become damaged. Addition of 3 percent by weight of 320- or 600-grit silicon carbide powder to ceramic during production results in impregnated tile material that resists overheating. Silicon carbide increases emittance and decreases transmittance of ceramic.

Gzowski, E. R.

1985-01-01

202

21. TILES OF THE NEW WORLD PANEL, NORTH WALL OF ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

21. TILES OF THE NEW WORLD PANEL, NORTH WALL OF THE INDIAN HOUSE. THE RELIEF BROCADE TILES ILLUSTRATE SCENES OF NATIVE AMERICAN HISTORY AND CULTURE, AND THE EARLY EUROPEAN EXPLORATION OF THE NEW WORLD. - Moravian Pottery & Tile Works, Southwest side of State Route 313 (Swamp Road), Northwest of East Court Street, Doylestown, Bucks County, PA

203

90. TILES OF THE NEW WORLD PANEL, NORTH WALL OF ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

90. TILES OF THE NEW WORLD PANEL, NORTH WALL OF THE INDIAN HOUSE. THE RELIEF BROCADE TILES ILLUSTRATE SCENES OF NATIVE AMERICAN HISTORY AND CULTURE, AND THE EARLY EUROPEAN EXPLORATION OF THE NEW WORLD. SAME VIEW AS PA-107-21. - Moravian Pottery & Tile Works, Southwest side of State Route 313 (Swamp Road), Northwest of East Court Street, Doylestown, Bucks County, PA

204

Installation of Ceramic Tile: Residential Thin-Set Methods.  

ERIC Educational Resources Information Center

This curriculum guide contains materials for use in teaching a course on residential thin-set methods of tile installation. Covered in the individual units are the following topics: the tile industry; basic math; tools; measurement; safety in tile setting; installation materials and guidelines for their use; floors; counter tops and backsplashes;…

Short, Sam

205

DeskAlign: Automaticlly Aligning a Tiled Windows Desktop  

Microsoft Academic Search

Tiled projector arrays are effective at meeting the needs for scalable, cost effective, higher resolution displays. In- creases in PC performance have allowed small tiled dis- plays to be driven from a single PC with multiple graphics cards. In this paper we present a system for automatically aligning the Windows Desktop of a tiled display. This sys- tem consists of

Grant Wallace; Han Chen; Kai Li

206

Convex combination maps over triangulations, tilings, and tetrahedral meshes  

E-print Network

Convex combination maps over triangulations, tilings, and tetrahedral meshes Michael S. Floater with arbitrary tilings. We also give a simple counterexample to show that convex combination mappings over, Secondary: 65D17, 58E20. Key words: triangulation, tiling, tetrahedral mesh, convex combination, discrete

Floater, Michael S.

207

2.OA Red and Blue Tiles  

NSDL National Science Digital Library

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Lin wants to put some red and blue tiles on a wall for decoration. She is thinking about several different patterns of tiles she could create. She want...

208

Steady-state differential calorimeter measures gamma heating in reactor  

NASA Technical Reports Server (NTRS)

Steady-state differential calorimeter, which displays good accuracy and reproducibility of results, is used to measure gamma heating in a reactor environment. The calorimeter has a long life expectancy since it is virtually unharmed by the reactor environment.

Herbst, D.; Talboy, J. H.

1968-01-01

209

CFD-Predicted Tile Heating Bump Factors Due to Tile Overlay Repairs  

NASA Technical Reports Server (NTRS)

A Computational Fluid Dynamics investigation of the Orbiter's Tile Overlay Repair (TOR) is performed to assess the aeroheating Damage Assessment Team's (DAT) existing heating correlation method for protuberance interference heating on the surrounding thermal protection system. Aerothermodynamic heating analyses are performed for TORs at the design reference damage locations body points 1800 and 1075 for a Mach 17.9 and a=39deg STS-107 flight trajectory point with laminar flow. Six different cases are considered. The computed peak heating bump factor on the surrounding tiles are below the DAT's heating bump factor values for smooth tile cases. However, for the uneven tiles cases the peak interference heating is shown to be considerably higher than the existing correlation prediction.

Lessard, Victor R.

2006-01-01

210

Some aspects of recent improvements of temperature-modulated calorimeter  

Microsoft Academic Search

Some aspects of recent improvements in temperature modulated calorimeter have been described. The contents are: (1) a low-frequency AC calorimeter with an improved resolution; ?CpCp ? 0.010%, ?T ? 7 mK; (2) an ultra-low frequency fully automated multifrequency AC calorimeter operated down to 0.5 mHz; and (3) a calorimeter with a capability of both AC-mode and relaxation-mode operations.

Kenji Ema; Haruhiko Yao

1997-01-01

211

Communications Self-assembly of Tiled Perovskite  

E-print Network

with specific electronic, magnetic, optical, catalytic, and other properties. Toward this goal, perovskiteCommunications Self-assembly of Tiled Perovskite Monolayer and Multilayer Thin Films Raymond E adsorption is a convenient way to make thin films of materials with specific stacking sequences.1

212

Computer-controlled optical scanning tile microscope.  

PubMed

A new type of computer-controlled optical scanning, high-magnification imaging system with a large field of view is described that overcomes the commonly believed incompatibility of achieving both high magnification and a large field of view. The new system incorporates galvanometer scanners, a CCD camera, and a high-brightness LED source for the fast acquisition of a large number of a high-resolution segmented tile images with a magnification of 800x for each tile. The captured segmented tile images are combined to create an effective enlarged view of a target totaling 1.6 mm x 1.2 mm in area. The speed and sensitivity of the system make it suitable for high-resolution imaging and monitoring of a small segmented area of 320 microm x 240 microm with 4 microm resolution. Each tile segment of the target can be zoomed up without loss of the high resolution. This new microscope imaging system gives both high magnification and a large field of view. This microscope can be utilized in medicine, biology, semiconductor inspection, device analysis, and quality control. PMID:16523776

Wang, C; Shumyatsky, P; Zeng, F; Zevallos, M; Alfano, R R

2006-02-20

213

Automatic CounTilings Doron ZEILBERGER1  

E-print Network

in English, or in an English-like super-high-level programming language, the following command: Write a Maple the bottom-left cell. Case I: It participates in the vertical tile, in which case the board looks like 10000 . . . 0 10000 . . . 0 , where 1 means an occupied cell and 0 means a still-untiled cell. Case II

Zeilberger, Doron

214

An efficient pseudomedian filter for tiling microrrays  

Microsoft Academic Search

BACKGROUND: Tiling microarrays are becoming an essential technology in the functional genomics toolbox. They have been applied to the tasks of novel transcript identification, elucidation of transcription factor binding sites, detection of methylated DNA and several other applications in several model organisms. These experiments are being conducted at increasingly finer resolutions as the microarray technology enjoys increasingly greater feature densities.

Thomas E. Royce; Nicholas J Carriero; Mark B. Gerstein

2007-01-01

215

TILE at Iowa: Adoption and Adaptation  

ERIC Educational Resources Information Center

This chapter introduces a University of Iowa effort to enhance and support active learning pedagogies in technology-enhanced (TILE) classrooms and three elements that proved essential to the campus-wide adoption of those pedagogies. It then describes the impact of those professional development efforts on the curricula and cultures of three…

Florman, Jean C.

2014-01-01

216

L-Tromino Tiling of Multilated Chessboards  

ERIC Educational Resources Information Center

An "n" x "n" chessboard is called deficient if one square is missing from any spot on the board. Can all deficient boards with a number of cells divisible by 3 be tiled by bent (or L-shaped) trominoes? The answer is yes, with exception of the order-5 board. This paper deals with the general problem plus numerous related puzzles and proofs…

Gardner, Martin

2009-01-01

217

Calorimeter with compensative absorber for measuring ?W level laser power  

Microsoft Academic Search

A calorimeter with a compensative absorber developed for measuring ?W-level laser power is described. With this calorimeter, laser power measurements can be made irrespective of pressure fluctuations in the surroundings. The calorimeter was found to be very effective in reducing the effects of ambient pressure fluctuations. The pressure stability has been improved by more than tenfold, and the standard deviation

Y. Suzuki; A. Murata; M. Araragi; T. Inoue

1990-01-01

218

Nonuniformities in organic liquid ionization calorimeters  

SciTech Connect

Hermeticity and uniformity in SSC calorimeter designs are compromised by structure and modularity. Some of the consequences of the cryogenic needs of liquid argon calorimetry are relatively well known. If the active medium is an organic liquid (TMP, TMS, etc.), a large number of independent liquid volumes is needed for safety and for rapid liquid exchange to eliminate local contamination. Modular construction ordinarily simplifies fabrication, assembly, handling and preliminary testing at the price of additional walls, other dead regions and many nonuniformities. Here we examine ways of minimizing the impact of some generic nonuniformities on the quality of calorimeter performance. 6 refs., 7 figs.

Wenzel, W.A.

1989-06-01

219

Commissioning of the ATLAS Liquid Argon Calorimeter  

E-print Network

The in-situ commissioning of the ATLAS liquid argon calorimeter is taking place since three years. During this period, it has been fully tested by means of frequent calibration runs, and the analysis of the large cosmic muon data samples and of the few beam splash events that occurred on September 10th, 2008. This has allowed to obtain a stable set of calibration constants for the first collisions, and to measure the in-situ calorimeter performances that were found to be at the expected level.

S. Laplace

2010-05-17

220

Large-Aperture Grating Tiling by Interferometry for Petawatt Chirped-Pulse--Amplification Systems  

SciTech Connect

A tiled-grating assembly with three large-scale gratings is developed with real-time interferometric tiling control for the OMEGA EP Laser Facility. An automatic tiling method is achieved and used to tile a three-tile grating assembly with the overall wavefront reconstructed. Tiling parameters sensitivity and focal-spot degradation from all combined tiling errors are analyzed for a pulse compressor composed of four such assemblies.

Qiao, J.; Kalb, A.; Guardalben, M.J.; King, G.; Canning. D.; Kelly, J.H.

2007-08-01

221

Hadron energy reconstruction for the ATLAS calorimetry in the framework of the non-parametrical method ATLAS  

Microsoft Academic Search

This paper discusses hadron energy reconstruction for the ATLAS barrel prototype combined calorimeter (consisting of a lead-liquid argon electromagnetic part and an iron-scintillator hadronic part) in the framework of the non-parametrical method. The non-parametrical method utilizes only the known e\\/h ratios and the electron calibration constants and does not require the determination of any parameters by a minimization technique. Thus,

S. Akhmadaliev; P. Amaral; G. Ambrosini; A. Amorim; K. Anderson; M. L. Andrieux; B. Aubert; E. Augé; F. Badaud; L. Baisin; F. Barreiro; G. Battistoni; A. Bazan; K. Bazizi; A. Belymam; D. Benchekroun; S. Berglund; J. C. Berset; G. Blanchot; A. Bogush; C. Bohm; V. Boldea; W. Bonivento; M. Bosman; N. Bouhemaid; D. Breton; P. Brette; C. Bromberg; J. Budagov; S. Burdin; L. Caloba; F. Camarena; D. V. Camin; B. Canton; M. Caprini; J. Carvalho; P. Casado; M. V. Castillo; D. Cavalli; M. Cavalli-Sforza; V. Cavasinni; R. Chadelas; M. Chalifour; L. Chekhtman; J. L. Chevalley; I. Chirikov-Zorin; G. Chlachidze; M. Citterio; W. E. Cleland; C. Clement; M. Cobal; F. Cogswell; J. Colas; J. Collot; S. Cologna; S. Constantinescu; G. Costa; D. Costanzo; M. Crouau; F. Daudon; J. David; M. David; T. Davidek; J. Dawson; K. De; C. de la Taille; J. Del Peso; T. Del Prete; P. de Saintignon; B. Di Girolamo; B. Dinkespiller; S. Dita; J. Dodd; J. Dolejsi; Z. Dolezal; R. Downing; J.-J. Dugne; D. Dzahini; I. Efthymiopoulos; D. Errede; S. Errede; H. Evans; G. Eynard; F. Fassi; P. Fassnacht; A. Ferrari; A. Ferrer; V. Flaminio; D. Fournier; G. Fumagalli; E. Gallas; M. Gaspar; V. Giakoumopoulou; F. Gianotti; O. Gildemeister; N. Giokaris; V. Glagolev; V. Glebov; A. Gomes; V. Gonzalez; S. Gonzalez De La Hoz; V. Grabsky; E. Grauges; Ph. Grenier; H. Hakopian; M. Haney; C. Hebrard; A. Henriques; L. Hervas; E. Higon; S. Holmgren; J. Y. Hostachy; A. Hoummada; J. Huston; D. Imbault; Yu. Ivanyushenkov; S. Jezequel; E. Johansson; R. Jones; A. Juste; S. Kakurin; A. Karyukhin; Yu. Khokhlov; J. Khubua; V. Klyukhin; G. Kolachev; S. Kopikov; M. Kostrikov; V. Kozlov; P. Krivkova; V. Kukhtin; M. Kulagin; Y. Kulchitsky; M. Kuzmin; L. Labarga; G. Laborie; D. Lacour; B. Laforge; S. Lami; V. Lapin; O. Le Dortz; M. Lefebvre; T. Le Flour; R. Leitner; M. Leltchouk; J. Li; M. Liablin; O. Linossier; D. Lissauer; F. Lobkowicz; M. Lokajicek; Yu. Lomakin; J. M. Lopez Amengual; B. Lund-Jensen; A. Maio; D. Makowiecki; S. Malyukov; L. Mandelli; B. Mansoulié; L. Mapelli; C. P. Marin; P. Marrocchesi; F. Marroquim; Ph. Martin; A. Maslennikov; N. Massol; L. Mataix; M. Mazzanti; E. Mazzoni; F. Merritt; B. Michel; R. Miller; I. Minashvili; L. Miralles; E. Mnatsakanian; E. Monnier; G. Montarou; G. Mornacchi; M. Moynot; G. S. Muanza; P. Nayman; S. Nemecek; M. Nessi; S. Nicoleau; M. Niculescu; J.-M. Noppe; A. Onofre; D. Pallin; D. Pantea; R. Paoletti; I. C. Park; G. Parrour; J. Parsons; A. Pereira; L. Perini; J. A. Perlas; P. Perrodo; J. Pilcher; J. Pinhao; H. Plothow-Besch; L. Poggioli; S. Poirot; L. Price; Y. Protopopov; J. Proudfoot; P. Puzo; V. Radeka; D. Rahm; G. Reinmuth; G. Renzoni; S. Rescia; S. Resconi; R. Richards; J.-P. Richer; C. Roda; S. Rodier; J. Roldan; J. B. Romance; V. Romanov; P. Romero; F. Rossel; N. Russakovich; P. Sala; E. Sanchis; H. Sanders; C. Santoni; J. Santos; D. Sauvage; G. Sauvage; L. Sawyer; L.-P. Says; A.-C. Schaffer; P. Schwemling; J. Schwindling; N. Seguin-Moreau; W. Seidl; J. M. Seixas; B. Sellden; M. Seman; A. Semenov; L. Serin; E. Shaldaev; M. Shochet; V. Sidorov; J. Silva; V. Simaitis; S. Simion; A. Sissakian; R. Snopkov; J. Soderqvist; A. Solodkov; A. Soloviev; I. Soloviev; P. Sonderegger; K. Soustruznik; F. Spano; R. Spiwoks; R. Stanek; E. Starchenko; P. Stavina; R. Stephens; M. Suk; A. Surkov; I. Sykora; H. Takai; F. Tang; S. Tardell; F. Tartarelli; P. Tas; J. Teiger; J. Thaler; J. Thion; Y. Tikhonov; S. Tisserant; S. Tokar; N. Topilin; Z. Trka; M. Turcotte; S. Valkar; M. J. Varanda; A. Vartapetian; F. Vazeille; I. Vichou; V. Vinogradov; S. Vorozhtsov; V. Vuillemin; A. White; M. Wielers; I. Wingerter-Seez; H. Wolters; N. Yamdagni; C. Yosef; A. Zaitsev; R. Zitoun; Y. P. Zolnierowski

2002-01-01

222

The electromagnetic calorimeter for the OBELIX experiment  

Microsoft Academic Search

We describe the electromagnetic calorimeter of the OBELIX detector installed on the LEAR facility at CERN: the criteria followed to design its structure and the tests and preparation work performed on the different components are discussed, to conclude with the description of the main control procedures operating on the assembled detector during the first tests of the apparatus on the

S. Affatato; G. Artusi; G. Avoni; O. Baglioni; A. Bertin; M. Bruschi; D. Bulgarelli; M. Capponi; I. D'Antone; S. de Castro; D. Galli; U. Marconi; I. Massa; M. Morganti; G. Paolucci; M. Piccinini; M. Poli; N. Semprini-Cesari; R. Spighi; S. Tuffanelli; S. Vecchi; M. Villa; A. Vitale; S. Zagato; G. Zavattini; A. Zoccoli

1993-01-01

223

ZEUS Luminosity Photon Calorimeter Linearity Measurement  

Microsoft Academic Search

Report presents the test results of the linearity measurement of the Luminosity Photon Calorimeter readout electronics. Nonlinearity of the preamplifiers, amplifiers, 140 meters long analog signal transmission, integrators and FADC have been measured and analyzed. This allows making data correction and results in increased luminosity measurement precision for off-line processing.

W. Daniluk; M. Gil; K. Oliwa; W. Wierba

224

Military Curriculum Materials for Vocational and Technical Education. Builders School, Ceramic Tile Setting 3-9.  

ERIC Educational Resources Information Center

This course, for individualized or group instruction on ceramic tile setting, was developed from military sources for use in vocational education. The course provides students with skills in mortar preparation, surface preparation, tile layout planning, tile setting, tile cutting, and the grouting of tile joints. Both theory and shop assignments…

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

225

How many faces can polycubes of lattice tilings by translation of R3  

E-print Network

How many faces can polycubes of lattice tilings by translation of R3 have? I. Gambini Aix Marseille: 05C88, 05C89 Abstract We construct a class of polycubes that tile the space by translation. Keywords: tilings of R3, tilings by translation, lattice periodic tilings, space-fillers 1 Introduction

Paris-Sud XI, Université de

226

Boeing's High Voltage Solar Tile Test Results  

NASA Technical Reports Server (NTRS)

Real concerns of spacecraft charging and experience with solar array augmented electrostatic discharge arcs on spacecraft have minimized the use of high voltages on large solar arrays despite numerous vehicle system mass and efficiency advantages. Boeing's solar tile (patent pending) allows high voltage to be generated at the array without the mass and efficiency losses of electronic conversion. Direct drive electric propulsion and higher power payloads (lower spacecraft weight) will benefit from this design. As future power demand grows, spacecraft designers must use higher voltage to minimize transmission loss and power cable mass for very large area arrays. This paper will describe the design and discuss the successful test of Boeing's 500-Volt Solar Tile in NASA Glenn's Tenney chamber in the Space Plasma Interaction Facility. The work was sponsored by NASA's Space Solar Power Exploratory Research and Technology (SERT) Program and will result in updated high voltage solar array design guidelines being published.

Reed, Brian J.; Harden, David E.; Ferguson, Dale C.; Snyder, David B.

2002-01-01

227

Boeing's High Voltage Solar Tile Test Results  

NASA Astrophysics Data System (ADS)

Real concerns of spacecraft charging and experience with solar array augmented electrostatic discharge arcs on spacecraft have minimized the use of high voltages on large solar arrays despite numerous vehicle system mass and efficiency advantages. Boeing's solar tile (patent pending) allows high voltage to be generated at the array without the mass and efficiency losses of electronic conversion. Direct drive electric propulsion and higher power payloads (lower spacecraft weight) will benefit from this design. As future power demand grows, spacecraft designers must use higher voltage to minimize transmission loss and power cable mass for very large area arrays. This paper will describe the design and discuss the successful test of Boeing's 500-Volt Solar Tile in NASA Glenn's Tenney chamber in the Space Plasma Interaction Facility. The work was sponsored by NASA's Space Solar Power Exploratory Research and Technology (SERT) Program and will result in updated high voltage solar array design guidelines being published.

Reed, Brian J.; Harden, David E.; Ferguson, Dale C.; Snyder, David B.

2002-10-01

228

Hadron Freeze-out and QGP Hadronization  

Microsoft Academic Search

Abundances and $m_\\\\bot$-spectra of strange and other hadronic particles emanating from central 158-200 A GeV reactions between nuclei are found to originate from a thermally equilibrated, deconfined source in chemical non-equilibrium. Physical freeze-out parameters and physical conditions (pressure, specific energy, entropy, and strangeness) are evaluated. Five properties of the source we obtain are as expected for direct hadron emission (hadronization)

Johann Rafelski; Jean Letessier

1999-01-01

229

FIBONACCI AND LUCAS IDENTITIES THROUGH COLORED TILINGS  

Microsoft Academic Search

In this paper we introduce t.he concept of colored Fi- bonacci tilings which leads to charming ~ombinat~orial prook of Fi- bonacci and Lucas number identites. Cornbinatorial proofs can lead to a greater appreciatioli arid understand- ing for any topic. Fibonacci arid Lucas identities are no exception. Let F7,, = F7,,-1 + Fn,-2, where Fo = 0, F1 = 1, and

ARTHUR T. BENJAMIN; JENNIFER J. QUINN

1999-01-01

230

Testing of hollow clay tile masonry prisms  

SciTech Connect

This paper presents test results of 610-mm wide (24-in.) by 1219-mm high (48-in.) by 203-or 330-mm (8- or 13-in.) thick prisms constructed of hollow clay tiles. Three prisms were extracted fro existing hollow clay title walls and 69 were constructed in laboratories at The University of Tennessee and the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland. Modulus of Elasticity, E, and compressive strength f{prime}{sub m} were calculated from the results.

Jones, W.D.; Butala, M.B.

1993-10-15

231

Nuclear-nuclear collision centrality determination by the spectators calorimeter for the MPD setup at the NICA facility  

NASA Astrophysics Data System (ADS)

The work conditions of the hadron calorimeter for spectators registration (Zero Degree Calorimeter, ZDC) were studied for the heavy nuclei collisions with the several GeV invariant energy. The ZDC simulations were performed for the MPD (Multi-Purpose Detector) at the NICA (Nuclotron-based Ion Collider fAcility) collider, which are under developement at the Joint Institute for Nuclear Research (JINR, Dubna). Taking into account the spectator nuclear fragments leads to a nonmonotonic dependence of the ZDC response on the impact parameter. The reason for this dependence studied with several event generators is the primary beam hole in the ZDC center. It is shown, that the ZDC signal should be combined with a data from other MPD@NICA detector subsystems to determine centrality.

Golubeva, M. B.; Guber, F. F.; Ivashkin, A. P.; Isupov, A. Yu.; Kurepin, A. B.; Litvinenko, A. G.; Litvinenko, E. I.; Migulina, I. I.; Peresedov, V. F.

2013-01-01

232

Some comments on pinwheel tilings and their diffraction  

E-print Network

The pinwheel tiling is the paradigm for a substitution tiling with circular symmetry, in the sense that the corresponding autocorrelation is circularly symmetric. As a consequence, its diffraction measure is also circularly symmetric, so the pinwheel diffraction consists of sharp rings and, possibly, a continuous component with circular symmetry. We consider some combinatorial properties of the tiles and their orientations, and a numerical approach to the diffraction of weighted pinwheel point sets.

Grimm, Uwe

2011-01-01

233

55. QUARRY TILE CUTTERS, SECOND FLOOR, NORTH WING. WORKERS PRESSED ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

55. QUARRY TILE CUTTERS, SECOND FLOOR, NORTH WING. WORKERS PRESSED THE CUTTERS INTO SLABS OF CLAY, LIFTED THEM ONTO DRYING BOARDS AND PRESSED THE PLUNGERS TO RELEASE THE CUT TILES. REPRODUCTIONS CUTTERS ARE NOT USED IN PRODUCTION. WOODEN FORMS FOR PRODUCING CLAY SLABS WITH ROLLING PINS REST AGAINST THE WALL. - Moravian Pottery & Tile Works, Southwest side of State Route 313 (Swamp Road), Northwest of East Court Street, Doylestown, Bucks County, PA

234

Development of high temperature combustor thermally protected by ceramic tiles  

NASA Astrophysics Data System (ADS)

The possibility of attaching ceramic tiles to gas turbine high temperature components has been suggested; this ceramic thermal barrier (CTB) method is presently considered for the case of a gas turbine combustor. CTB accomplishes metallic combustor structure cooling by leaving a narrow air flow corridor between the ceramic tile and metal surfaces. Attention is given to the adequacy of methods for the support of the ceramic tiles, as well as to the determination of CTB thermal insulation effects.

Abe, T.; Ishikawa, H.

235

Some comments on pinwheel tilings and their diffraction  

E-print Network

The pinwheel tiling is the paradigm for a substitution tiling with circular symmetry, in the sense that the corresponding autocorrelation is circularly symmetric. As a consequence, its diffraction measure is also circularly symmetric, so the pinwheel diffraction consists of sharp rings and, possibly, a continuous component with circular symmetry. We consider some combinatorial properties of the tiles and their orientations, and a numerical approach to the diffraction of weighted pinwheel point sets.

Uwe Grimm; Xinghua Deng

2011-02-08

236

QCD in hadron-hadron collisions  

SciTech Connect

Quantum Chromodynamics provides a good description of many aspects of high energy hadron-hadron collisions, and this will be described, along with some aspects that are not yet understood in QCD. Topics include high E{sub T} jet production, direct photon, W, Z and heavy flavor production, rapidity gaps and hard diffraction.

Albrow, M.

1997-03-01

237

Precision timing with liquid ionization calorimeters  

NASA Astrophysics Data System (ADS)

We present timing measurements performed with a liquid krypton electromagnetic accordion calorimeter, measured in an electron beam over an energy range of 5-20 GeV. A novel discriminator with an amplitude-independent timing response was used to extract the inherently accurate timing information from the calorimeter. As expected, the timing resolution ? ? is observed to vary inversely with the signal amplitude, which is proportional to the deposited energy E. We measure a resolution of ?? = 4.15±0.06 GeV ns/ E for a sum of 5×5 towers with dimensions 2.7×2.5 cm 2 each. From this we deduce that the timing resolution for an individual tower is approximately 0.8 GeV ns/ E.

Benary, O.; Cannon, S.; Cleland, W.; Ferguson, I.; Finley, C.; Gordeev, A.; Gordon, H.; Kistenev, E.; Kroon, P.; Letchouk, M.; Lissauer, D.; Ma, H.; Makowiecki, D.; Maslennikov, A.; McCorkle, S.; Onoprienko, D.; Onuchin, A.; Oren, Y.; Panin, V.; Parsons, J.; Rabel, J.; Radeka, V.; Rogers, L.; Rahm, D.; Rescia, S.; Rutherfoord, J.; Seman, M.; Smith, M.; Sondericker, J.; Steiner, R.; Stephani, D.; Stern, E.; Stumer, I.; Takai, H.; Themann, H.; Tikhonov, Y.

1993-07-01

238

LYSO crystal calorimeter readout with silicon photomultipliers  

NASA Astrophysics Data System (ADS)

Large area Silicon PhotoMultipliers (SiPMs) are the new frontier of the development of readout systems for scintillating detectors. A SiPM consists of a matrix of parallel-connected silicon micropixels operating in limited Geiger-Muller avalanche mode, and thus working as independent photon counters with a very high gain (~106). This contribution presents the performance in terms of linearity and energy resolution of an electromagnetic homogeneous calorimeter composed of 9~18X0 LYSO crystals. The crystals were readout by 36 4×4 mm2 SiPMs (4 for each crystal) produced by FBK-irst. This calorimeter was tested at the Beam Test Facility at the INFN laboratories in Frascati with a single- and multi-particle electron beam in the 100-500 MeV energy range.

Berra, A.; Bonvicini, V.; Cecchi, C.; Germani, S.; Guffanti, D.; Lietti, D.; Lubrano, P.; Manoni, E.; Prest, M.; Rossi, A.; Vallazza, E.

2014-11-01

239

Electric Polarizability of Hadrons  

E-print Network

The electric polarizability of a hadron allows an external electric field to shift the hadron mass. We try to calculate the electric polarizability for several hadrons from their quadratic response to the field at a=0.17fm using an improved gauge field and the clover quark action. Results are compared to experiment where available.

Joe Christensen; Frank X. Lee; Walter Wilcox; Leming Zhou

2002-09-03

240

Scintillating LXe\\/LKr electromagnetic calorimeter  

Microsoft Academic Search

A scintillating LXe\\/LKr electromagnetic calorimeter has been built at the ITEP and tested at the BATES (MIT) accelerator. The detector consists of PMT matrix and 45 light collecting cells made of aluminized 50 microns Mylar partially covered with p-terphenyle as a wavelength-shifter (WLS). Each pyramidal cell has (2.1×2.1)×40×(4.15×4.15) cm dimensions and is viewed by FEU-85 glass-window photomultiplier. The detector has

D. Yu. Akimov; A. I. Bolozdynya; D. L. Churakov; V. N. Afonasyev; S. G. Belogurov; A. D. Brastilov; A. A. Burenkov; L. N. Gusev; V. F. Kuzichev; V. N. Lebedenko; T. A. Osipova; I. A. Rogovsky; G. A. Safronov; S. A. Simonychev; V. N. Solovov; V. S. Sopov; G. N. Smirnov; V. P. Tchernyshev; M. Chen; M. M. Smolin; W. Turchinetz; R. A. Minakova; V. M. Shershukov; V. H. Dodohov

1994-01-01

241

Scintillating LXe\\/LKr electromagnetic calorimeter  

Microsoft Academic Search

A scintillating LXe\\/LKr electromagnetic calorimeter has been built at the ITEP and tested at the BATES (MIT) accelerator. The detector consists of a PMT matrix and 45 light collecting cells made of aluminized Mylar partially covered with p-terphenyl as a wavelength-shifter (WLS). Each pyramidal cell has (2.1×2.1)×40×(4.15×4.15) cm dimensions and is viewed by an FEU-85 glass-window photomultiplier. The detector has

D. Yu. Akimov; A. J. Bolozdynya; D. L. Churakov; V. N. Afonasyev; S. G. Belogurov; A. D. Brastilov; A. A. Burenkov; L. N. Gusev; V. F. Kuzichev; V. N. Lebedenko; T. A. Osipova; I. A. Rogovsky; A. Safronov; A. Simonychev; V. N. Solovov; V. S. Sopov; G. N. Smirnov; V. P. Tchernyshev; M. Chen; M. M. Smolin; W. Turchinetz; R. A. Minakova; V. M. Shershukov; V. H. Dodohov

1995-01-01

242

Monte Carlo simulation of HERD calorimeter  

NASA Astrophysics Data System (ADS)

The High Energy cosmic-Radiation Detection (HERD) facility onboard China's Space Station is planned for operation starting around 2020 for about 10 years. It is designed as a next generation space facility focused on indirect dark matter search, precise cosmic ray spectrum and composition measurements up to the knee energy, and high energy gamma-ray monitoring and survey. The calorimeter plays an essential role in the main scientific objectives of HERD. A 3-D cubic calorimeter filled with high granularity crystals as active material is a very promising choice for the calorimeter. HERD is mainly composed of a 3-D calorimeter (CALO) surrounded by silicon trackers (TK) from all five sides except the bottom. CALO is made of 9261 cubes of LYSO crystals, corresponding to about 55 radiation lengths and 3 nuclear interaction lengths, respectively. Here the simulation results of the performance of CALO with GEANT4 and FLUKA are presented: 1) the total absorption CALO and its absorption depth for precise energy measurements (energy resolution: 1% for electrons and gammarays beyond 100 GeV, 20% for protons from 100 GeV to 1 PeV); 2) its granularity for particle identification (electron/proton separation power better than 10-5); 3) the homogenous geometry for detecting particles arriving from every unblocked direction for large effective geometrical factor (<3 m2sr for electron and diffuse gammarays, >2 m2sr for cosmic ray nuclei); 4) expected observational results such as gamma-ray line spectrum from dark matter annihilation and spectrum measurement of various cosmic ray chemical components.

Xu, M.; Chen, G. M.; Dong, Y. W.; Lu, J. G.; Quan, Z.; Wang, L.; Wang, Z. G.; Wu, B. B.; Zhang, S. N.

2014-07-01

243

The CLAS Electromagnetic Calorimeter at Large Angles  

SciTech Connect

The study of the response of the two modules of the large-angle electromagnetic shower calorimeter (LAC) of the CLAS detector to charged and neutral particles is reported. The results agree very well with the Monte Carlo simulation. The procedures adopted for the energy and timing calibration are also discussed, proving that the module geometry allows for simple self-calibrating energy and timing algorithms.

Anghinolfi, Marco; Avagyan, Harutyun; Battaglieri, Marco; Bianchi, Nicola; Corvisiero, Pietro; De Vita, Raffaella; Golovatch, E.; Gyurjyan, Vardan; Mirazita, Marco; Mokeev, Viktor; Muccifora, Valeria; Osipenko, Mikhail; Polli, Ermanno; Ricco, Giovanni; Ripani, Marco; Ronchetti, Federico; Rossi, Patrizia; Sapunenko, Vladimir; Taiuti, Mauro

2004-09-01

244

Thermochemistry : BombCalorimeter (4 Variations)  

NSDL National Science Digital Library

Stearic acid (CH 3 (CH 2 ) 16 CO 2 H) is a fatty acid, the part of fat that stores most of the energy. 1.00 g of stearic acid was burned in a bomb calorimeter. The bomb had a heat capacity of 652 J/ o C and a 500. g water reservoir. If the temperature rose from 25.0 to 39.3 o C, how much heat was released when the stearic acid was burned?

245

Troubleshooting guide for Mound calorimeter systems  

SciTech Connect

This report is to be used as a tool for troubleshooting Mound calorimeter systems. It describes in simple language the equilibration, prediction, and servo-control modes of operation. A problem-cause-action table provides suggestions and, in some cases, directs personnel to one of six troubleshooting flow charts included in the report. Using the flow charts, laboratory personnel should be able to rcognize and troubleshoot most problems that occur. 4 figs., 1 tab.

Breakall, K.L.; Duff, M.F.; Rodenburg, W.W.

1988-06-29

246

Calibrated CO2-laser power calorimeter  

Microsoft Academic Search

A continuously measuring carbon-dioxide laser power calorimeter designed for laser powers up to 25 kW is presented. The absorption of the detector is shown to be 99.98% at 10.6 micrometer and 99.1% at 1.06 micrometer. The flow-rate of the coolant is measured by determining the temperature increase due to an equivalent electrical heating of the coolant before the detector. An

W. Plass; Andreas Voss; N. Schmid; Adolf Giesen

1996-01-01

247

Fast Shower Simulation in the ATLAS Calorimeter  

SciTech Connect

The time to simulate pp collisions in the ATLAS detector is largely dominated by the showering of electromagnetic particles in the heavy parts of the detector, especially the electromagnetic barrel and endcap calorimeters. Two procedures have been developed to accelerate the processing time of electromagnetic particles in these regions: (1) a fast shower parameterisation and (2) a frozen shower library. Both work by generating the response of the calorimeter to electrons and positrons with Geant 4, and then reintroduce the response into the simulation at runtime. In the fast shower parameterisation technique, a parameterization is tuned to single electrons and used later by simulation. In the frozen shower technique, actual showers from low-energy particles are used in the simulation. Full Geant 4 simulation is used to develop showers down to {approx} 1 GeV, at which point the shower is terminated by substituting a frozen shower. Judicious use of both techniques over the entire electromagnetic portion of the ATLAS calorimeter produces an important improvement of CPU time. We discuss the algorithms and their performance in this paper.

Barberio, E.; /Melbourne U.; Boudreau, J.; /Pittsburgh U.; Butler, B.; /SLAC; Cheung, S.L.; /Toronto U.; Dell'Acqua, A.; /CERN; Di Simone, A.; /CERN; Ehrenfeld, W.; /Hamburg U. /DESY; Gallas, M.V.; /CERN; Glazov, A.; /DESY; Marshall, Z.; /Caltech /Nevis Labs, Columbia U.; Mueller, J.; /Pittsburgh U.; Placakyte, R.; /DESY; Rimoldi, A.; /Pavia U. /INFN, Pavia; Savard, P.; /Toronto U.; Tsulaia, V.; /Pittsburgh U.; Waugh, A.; /Sydney U.; Young, C.C.; /SLAC

2011-11-08

248

High energy hadron-hadron collisions  

SciTech Connect

Results of a study on high energy collision with the geometrical model are summarized in three parts: (i) the elastic hadron-hadron collision, (ii) the inelastic hadron-hadron collision, and (iii) the e{sup +}e{sup {minus}} annihilation. For elastic collisions, a simple expression for the proton matter distribution is proposed which fits well the elastic {bar p}p scattering from ISR to S{bar p}pS energies within the geometrical model. The proton form factor is of the dipole form with an energy-dependent range parameter. The {bar p}p elastic differential cross section at Tevatron energies obtained by extrapolation is in good agreement with experiments. For multiparticle emission processes a unified physical picture for hadron-hadron and e{sup +}e{sup {minus}} collisions was proposed. A number of predictions were made, including the one that KNO-scaling does not obtain for e{sup +}e{sup {minus}} two-jet events. An extension of the considerations within the geometrical model led to a theory of the momentum distributions of the outgoing particles which are found in good agreement with current experimental data. Extrapolations of results to higher energies have been made. The cluster size of hadrons produced in e{sup +}e{sup {minus}} annihilation is found to increase slowly with energy.

Chou, T.T.

1990-11-01

249

Vortex states in Archimedean tiling pinning arrays  

NASA Astrophysics Data System (ADS)

We numerically study vortex ordering and pinning in Archimedean tiling substrates composed of square and triangular plaquettes. The two different plaquettes become occupied at different vortex densities, producing commensurate peaks in the magnetization at non-integer matching fields. We find that as the field increases, in some cases the fraction of occupied pins can decrease due to the competition between fillings of the different plaquette types. We also identify a number of different types of vortex orderings as a function of the field at integer and non-integer commensurate fillings.

Ray, D.; Reichhardt, C.; Olson Reichhardt, C. J.

2014-07-01

250

The tilings of Kari and E. Arthur Robinson, Jr.  

E-print Network

. · In a valid tiling, colors of adjacent edges must match. · Essentialy a 2-dimensional SFT, · (any 2-d SFT can Fibonacci SFT. #12;Finite state machine #12;Hao Wang, 1961 · Studied problem of existence of a valid tiling of the plane. · Equivalently: every nonempty 2-dimensional SFT has a periodic orbit. · (Wang did not use

Robinson Jr., E. Arthur (Robbie)

251

Computerized Machine for Cutting Space Shuttle Thermal Tiles  

NASA Technical Reports Server (NTRS)

A report presents the concept of a machine aboard the space shuttle that would cut oversized thermal-tile blanks to precise sizes and shapes needed to replace tiles that were damaged or lost during ascent to orbit. The machine would include a computer-controlled jigsaw enclosed in a clear acrylic shell that would prevent escape of cutting debris. A vacuum motor would collect the debris into a reservoir and would hold a tile blank securely in place. A database stored in the computer would contain the unique shape and dimensions of every tile. Once a broken or missing tile was identified, its identification number would be entered into the computer, wherein the cutting pattern associated with that number would be retrieved from the database. A tile blank would be locked into a crib in the machine, the shell would be closed (proximity sensors would prevent activation of the machine while the shell was open), and a "cut" command would be sent from the computer. A blade would be moved around the crib like a plotter, cutting the tile to the required size and shape. Once the tile was cut, an astronaut would take a space walk for installation.

Ramirez, Luis E.; Reuter, Lisa A.

2009-01-01

252

Hierarchical Overlapped Tiling Xing Zhou, Jean-Pierre Giacalone  

E-print Network

barrier to guarantee correctness, because of the data dependences between neighboring tiles of iterations the loops, the traditional loop fusion and tiling transformation applied in Figure 1-(b) will not benefit a suboptimal job because of the barrier introduced. On some architectures, barriers are expensive

Garzarán, María Jesús

253

Low-Density, Aerogel-Filled Thermal-Insulation Tiles  

NASA Technical Reports Server (NTRS)

Aerogel fillings have been investigated in a continuing effort to develop low-density thermal-insulation tiles that, relative to prior such tiles, have greater dimensional stability (especially less shrinkage), equal or lower thermal conductivity, and greater strength and durability. In preparation for laboratory tests of dimensional and thermal stability, prototypes of aerogel-filled versions of recently developed low-density tiles have been fabricated by impregnating such tiles to various depths with aerogel formations ranging in density from 1.5 to 5.6 lb/ft3 (about 53 to 200 kg/cu m). Results available at the time of reporting the information for this article showed that the thermal-insulation properties of the partially or fully aerogel- impregnated tiles were equivalent or superior to those of the corresponding non-impregnated tiles and that the partially impregnated tiles exhibited minimal (<1.5 percent) shrinkage after multiple exposures at a temperature of 2,300 F (1,260 C). Latest developments have shown that tiles containing aerogels at the higher end of the density range are stable after multiple exposures at the said temperature.

Santos, Maryann; Heng, Vann; Barney, Andrea; Oka, Kris; Droege, Michael

2005-01-01

254

Intrinsic universality in tile self-assembly requires cooperation  

E-print Network

of struc- tures experimentally at the nanoscale, such as regular arrays [47], fractal struc- tures [39 tiles bind to each other if they match on one or more sides, whereas cooperative binding requires quite surprising given that three-dimensional noncooperative tile assembly systems simulate Turing

Woods, Damien

255

A Tiling Technology for Creating Extra-Large Scale Terrain  

Microsoft Academic Search

The paper proposes a real-time terrain tiling method for extra-large scale terrain rendering. The core idea is based on a loading-on-demand technique which dynamically loads visible parts of the terrain model, then tiling and rendering. The method solves the boundary match problem for adjacent terrain blocks in dynamic loading which avoids \\

Zhou Zheng-chun; Wan Wang-gen; Tang Jing-zhou; Miao Xiao-liang

2007-01-01

256

TECHNICAL DESIGN REPORT FOR A NOSECONE CALORIMETER (NCC) FOR THE PHENIX EXPERIMENT.  

SciTech Connect

A remarkable result has emerged from the first several years of data taking at RHIC--the high temperature and density phase of QCD matter created in heavy ion collisions at RHIC is best described as a near perfect fluid--the strongly interacting Quark-Gluon-Plasma (sQGP). This state is characterized by a small viscosity to entropy ratio, and a high density of color charges which induces huge energy losses of partons transversing the medium. The task for the future is to understand the characteristics of the sQGP, and perhaps more importantly--to gain some insight into how and why such a medium is created. The PHENIX detector has been one of the primary experimental tools at RHIC; in particular the electromagnetic calorimeter has been a critical component of many of the measurements leading to this discovery. The coverage of the present PHENIX electromagnetic calorimeter is rather limited, covering half the azimuth and -0.35< {eta} <0.35 Further progress requires larger coverage of electromagnetic calorimetry, both to increase the rate for low cross section phenomena, and to cover a broader range of pseudorapidity to study the rapidity dependence of the medium. A pair of Nosecone Calorimeters (NCC) has been designed covering both positive and negative rapidity regions 1< |{eta}| <3 of the PHENIX detector. The NCC will make it possible to perform tomographic studies of the jet energy dependence of energy loss and medium response, by using direct photons as trigger particles over a large rapidity range. The technique of correlating trigger hadrons with low momentum hadrons has been powerfully exploited at RHIC to study the evolution of back to back jets [1, 2] and hence the response of the medium. The NCC will make it possible to do such studies using direct photons as the trigger particles. The direct photon in such ''photon-jet'' events tags the transverse momentum of outgoing parton which then fragments into lower energy particles. Together with the Forward Silicon Vertex detector (FVTX), the NCC will make PHENIX a large acceptance spectrometer, capable of detecting photons, electrons, muons, and hadrons. Our prime motivation is to provide precision measurements of direct photons, {pi}{sup 0}s and dielectrons in A+A, p(d)+A, and polarized p+p collisions. The upgrade will provide access to physics observables that are not currently accessible to PHENIX or that are now available only indirectly with very limited accuracy.

PHENIX EXPERIMENT; OBRIEN,E.; BOOSE, S.; CHIU, M.; JOHNSON, B.M.; KISTENEV, E.P.; LYNCH, D.; NOUICER, R.; PAK, R.; PISANI, R.; STOLL, S.P.; SUKHANOV, A.; WOODY, C.L.; LI, Z.; RADEKA, V.; RESCIA, S.; (PHENIX EXPERIMENT COLLABORATORS)

2007-08-01

257

Introduction to building projection-based tiled display systems.  

SciTech Connect

This tutorial introduces the concepts and technologies needed to build projector-based display systems. Tiled displays offer scalability, high resolution, and large formats for various applications. Tiled displays are an emerging technology for constructing semi-immersive visualization environments capable of presenting high-resolution images from scientific simulation. The largest impact may well arise from using large-format tiled displays as one of possibly multiple displays in building information or active spaces that surround the user with diverse ways of interacting with data and multimedia information flows. These environments may prove the ultimate successor to the desktop metaphor for information technology work. Several fundamental technological problems must be addressed to make tiled displays practical. These include: the choice of screen materials and support structures; choice of projectors, projector supports, and optional fine positioners; techniques for integrating image tiles into a seamless whole; interface devices for interaction with applications; display generators and interfaces; and the display software environment.

Hereld, M.; Judson, I. R.; Stevens, R.; Mathematics and Computer Science; Univ. of Chicago

2000-07-01

258

Measurement of the hadronic photon structure function at LEP 1 for ? Q 2? values between 9.9 and 284 GeV 2  

Microsoft Academic Search

Inclusive ??? interactions to hadronic final states where one scattered electron or positron is detected in the electromagnetic calorimeters have been studied in the LEP 1 data taken by ALEPH from 1991 to 1995. The event sample has been used to measure the hadronic structure function of the photon F2? in three bins with ?Q2? of 9.9, 20.7 and 284

S. R. Armstrong; E. Charles; P. Elmer; D. P. S. Ferguson; Y. Gao; S. González; T. C. Greening; O. J. Hayes; H. Hu; S. Jin; P. A. McNamara III; J. M. Nachtman; J. Nielsen; W. Orejudos; Y. B. Pan; Y. Saadi; I. J. Scott; J. Walsh; Sau Lan Wu; X. Wu; G. Zobernig; Ll. M. Mir; A. Pacheco; I. C. Park; I. Riu; A. Colaleo; D. Creanza; M. de Palma; G. Gelao; G. Iaselli; G. Maggi; M. Maggi; S. Nuzzo; A. Ranieri; G. Raso; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; A. Tricomi; G. Zito; X. Huang; J. Lin; Q. Ouyang; T. Wang; Y. Xie; R. Xu; S. Xue; J. Zhang; L. Zhang; W. Zhao; D. Abbaneo; U. Becker; G. Boix; M. Cattaneo; F. Cerutti; V. Ciulli; G. Dissertori; H. Drevermann; R. W. Forty; M. Frank; A. W. Halley; J. B. Hansen; J. Harvey; P. Janot; B. Jost; I. Lehraus; O. Leroy; P. Mato; A. Minten; A. Moutoussi; F. Ranjard; L. Rolandi; D. Rousseau; D. Schlatter; M. Schmitt; O. Schneider; P. Spagnolo; W. Tejessy; F. Teubert; I. R. Tomalin; E. Tournefier; A. E. Wright; Z. Ajaltouni; F. Badaud; G. Chazelle; O. Deschamps; A. Falvard; C. Ferdi; P. Gay; C. Guicheney; P. Henrard; J. Jousset; B. Michel; S. Monteil; J.-C. Montret; D. Pallin; P. Perret; F. Podlyski; J. D. Hansen; P. H. Hansen; B. S. Nilsson; B. Rensch; A. Wäänänen; G. Daskalakis; A. Kyriakis; C. Markou; E. Simopoulou; I. Siotis; A. Vayaki; A. Blondel; G. Bonneaud; J.-C. Brient; A. Rougé; M. Rumpf; M. Swynghedauw; M. Verderi; H. Videau; E. Focardi; G. Parrini; K. Zachariadou; R. Cavanaugh; M. Corden; C. Georgiopoulos; A. Antonelli; G. Bencivenni; G. Bologna; F. Bossi; P. Campana; G. Capon; V. Chiarella; P. Laurelli; G. Mannocchi; F. Murtas; G. P. Murtas; L. Passalacqua; M. Pepe-Altarelli; L. Curtis; J. G. Lynch; P. Negus; V. O'Shea; C. Raine; P. Teixeira-Dias; A. S. Thompson; O. Buchmüller; S. Dhamotharan; C. Geweniger; P. Hanke; G. Hansper; V. Hepp; E. E. Kluge; A. Putzer; J. Sommer; K. Tittel; S. Werner; M. Wunsch; V. M. Ghete; P. Girtler; E. Kneringer; D. Kuhn; G. Rudolph; C. K. Bowdery; P. G. Buck; A. J. Finch; F. Foster; G. Hughes; R. W. L. Jones; N. A. Robertson; M. I. Williams; I. Giehl; K. Jakobs; K. Kleinknecht; G. Quast; B. Renk; E. Rohne; H.-G. Sander; H. Wachsmuth; C. Zeitnitz; J. J. Aubert; C. Benchouk; A. Bonissent; J. Carr; P. Coyle; F. Etienne; F. Motsch; P. Payre; M. Talby; M. Thulasidas; M. Aleppo; M. Antonelli; F. Ragusa; V. Büscher; H. Dietl; G. Ganis; K. Hüttmann; G. Lütjens; C. Mannert; W. Männer; H.-G. Moser; S. Schael; R. Settles; H. Seywerd; H. Stenzel; W. Wiedenmann; G. Wolf; P. Azzurri; J. Boucrot; O. Callot; S. Chen; A. Cordier; M. Davier; L. Duflot; J.-F. Grivaz; Ph. Heusse; A. Jacholkowska; F. Le Diberder; J. Lefrançois; A.-M. Lutz; M.-H. Schune; J.-J. Veillet; I. Videau; D. Zerwas; G. Bagliesi; S. Bettarini; T. Boccali; C. Bozzi; G. Calderini; R. dell'Orso; I. Ferrante; L. Foà; A. Giassi; A. Gregorio; F. Ligabue; A. Lusiani; P. S. Marrocchesi; A. Messineo; F. Palla; G. Rizzo; G. Sanguinetti; G. Sguazzoni; R. Tenchini; C. Vannini; A. Venturi; P. G. Verdini; G. A. Blair; G. Cowan; M. G. Green; T. Medcalf; J. A. Strong; J. H. von Wimmersperg-Toeller; D. R. Botterill; R. W. Clifft; T. R. Edgecock; P. R. Norton; J. C. Thompson; B. Bloch-Devaux; P. Colas; S. Emery; W. Kozanecki; E. Lançon; M.-C. Lemaire; E. Locci; P. Perez; J. Rander; J.-F. Renardy; A. Roussarie; J.-P. Schuller; J. Schwindling; A. Trabelsi; B. Vallage; S. N. Black; J. H. Dann; R. P. Johnson; H. Y. Kim; N. Konstantinidis; A. M. Litke; M. A. McNeil; G. Taylor; C. N. Booth; S. Cartwright; F. Combley; M. S. Kelly; M. Lehto; L. F. Thompson; K. Affholderbach; A. Böhrer; S. Brandt; C. Grupen; G. Prange; G. Giannini; B. Gobbo; J. Rothberg; S. Wasserbaech; P. Elmer; Sau Lan Wu

1999-01-01

259

Comparison of hadronic shower punchthrough and TeV muon dE/dx with calculation  

NASA Astrophysics Data System (ADS)

We have measured the longitudinal particle punchthrough probability from shower cascades produced by hadrons incident on the iron-scintillator calorimeter of the CCFR neutrino detector and have compared them to a Monte Carlo simulation. Measurements of the dE/dx energy loss iron of high energy cosmic ray muons (up to 1 TeV) incident on the same detector are presented and are compared against calculations.

Kim, B. J.; de Barbaro, P.; Bodek, A.; Budd, H. S.; Sakumoto, W. K.; Merritt, F. S.; Oreglia, M. J.; Schellman, H.; Schumm, B. A.; Arroyo, C.; Bachmann, K. T.; Blair, R. E.; Foudas, C.; King, B.; Lefmann, W. C.; Leung, W. C.; Mishra, S. R.; Oltman, E.; Quintas, P. Z.; Rabinowitz, S. A.; Sciulli, F.; Seligman, W. G.; Shaevitz, M. H.; Bernstein, R. H.; Borcherding, F. O.; Fisk, H. E.; Lamm, M. J.; Marsh, W.; Merritt, K. W.; Rapidis, P. A.; Yovanovitch, D.; Sandler, P. H.; Smith, W. H.

1991-07-01

260

Characterization and calibration of four high energy laser calorimeters  

Microsoft Academic Search

Four spherical heat sink calorimeters were built for monitoring laser power in the Navy High Energy Laser Program. An extensive study was made to characterize the transfer of energy from a 90 kW lamp to one of the calorimeters. This characterization was then used in the calibration of all four. The standard deviations of the data indicate the precision of

G. L. Hall; R. B. Brown

1985-01-01

261

Ac loss calorimeter for three-phase cable  

SciTech Connect

A calorimeter for measuring ac losses in meter-long lengths of HTS superconducting power transmission line cables is described. The calorimeter, which is based on a temperature difference technique, has a precision of 1 mW and measures single, two-phase (coupling), and three-phase losses. The measurements show significant coupling losses between phases.

Daney, D.E.; Boenig, H.J.; Maley, M.P.; McMurry, D.E.; DeBlanc, B.G. [Los Alamos National Lab., NM (United States). Superconductivity Technology Center

1996-10-01

262

Design, Performance and Calibration of the CMS Forward Calorimeter Wedges  

Microsoft Academic Search

We report on the test beam results and calibration methods using charged particles of the CMS Forward Calorimeter (HF). The HF calorimeter covers a large pseudorapidity region (3\\\\l |\\\\eta| \\\\le 5), and is essential for large number of physics channels with missing transverse energy. It is also expected to play a prominent role in the measurement of forward tagging jets

G Baiatian; Albert M Sirunyan; Igor Emeliantchik; V Massolov; Nikolai Shumeiko; R Stefanovich; Jordan Damgov; Lubomir Dimitrov; Vladimir Genchev; Stefan Piperov; Ivan Vankov; Leander Litov; Gyorgy Bencze; Andras Laszlo; Andras Pal; Gyorgy Vesztergombi; Peter Zálán; Andras Fenyvesi; Harinder Singh Bawa; Suman Bala Beri; V Bhatnager; Manjit Kaur; Arun Kumar; Jatinder Mohan Kohli; Jas Bir Singh; Bannaje Sripathi Acharya; Sanjay Chendvankar; Shashikant Dugad; Suresh Devendrappa Kalmani; S Katta; Kajari Mazumdar; Naba Kumar Mondal; P Nagaraj; Mandakini Ravindra Patil; L V Reddy; B Satyanarayana; Seema Sharma; Piyush Verma; Majid Hashemi; M Mohammadi-Najafabadi; S Paktinat; Kanstantsin Babich; Igor Golutvin; Vladimir Kalagin; Ivan Kosarev; Vladimir Ladygin; Gleb Meshcheryakov; P Moissenz; A Petrosian; Evgueni Rogalev; S Sergeyev; Vitaly Smirnov; A V Vishnevski; Anton Volodko; Anatoli Zarubin; Vladimir Gavrilov; Yuri Gershtein; N P Ilyina; Vitali Kaftanov; I Kisselevich; V Kolossov; Andrey Krokhotin; Sergey Kuleshov; Dmitri Litvintsev; A Oulyanov; S Safronov; Sergey Semenov; Viatcheslav Stolin; Andrey Gribushin; A Demianov; Olga Kodolova; Sergey Petrushanko; Ludmila Sarycheva; Konstantin Teplov; Irina Vardanyan; A A Yershov; Victor Abramov; Petr Goncharov; Alexey Kalinin; Andrey Korablev; V A Khmelnikov; Yury Korneev; Alexander Krinitsyn; V Kryshkin; Vladimir Lukanin; Vladimir Pikalov; Anton Ryazanov; Vladimir Talov; L K Turchanovich; Alexey Volkov; Tiziano Camporesi; Theo De Visser; E Vlassov; Sezgin Aydin; Mustafa Numan Bakirci; Salim Cerci; Isa Dumanoglu; Eda Eskut; A Kayis-Topaksu; S Koylu; Pelin Kurt; A Kuzucu; G Onengüt; N Ozdes-Koca; Halil Ozkurt; Kenan Sogut; Huseyin Topakli; Mehmet Vergili; Taylan Yetkin; Kerem Cankocak; Halil Gamsizkan; Cigdem Ozkan; Sezen Sekmen; M Serin-Zeyrek; Ramazan Sever; Efe Yazgan; Mehmet Zeyrek; Mehmet Deliomeroglu; Kamile Dindar; Erhan Gülmez; Engin Isiksal; Mithat Kaya; Suat Ozkorucuklu; Leonid Levchuk; Pavel Sorokin; B Grinev; V Lubinsky; Vitaliy Senchyshyn; E Walter Anderson; John M Hauptman; John E Elias; Jim Freeman; Dan Green; Arjan Hendrix Heering; Dragoslav Lazic; Serguei Los; Anatoly Ronzhin; Ichiro Suzuki; Richard Vidal; Juliana Whitmore; Georgy Antchev; M Arcidy; Eric Hazen; C Lawlor; Emanuel Machado; C Posch; James Rohlf; Lawrence Sulak; F Varela; Shouxiang Wu; Mark Raymond Adams; Kyle Burchesky; W Qiang; Salavat Abdullin; Drew Baden; Robert Bard; Sarah Catherine Eno; Tullio Grassi; Chad Jarvis; Richard G Kellogg; Shuichi Kunori; Jeremy Mans; Andris Skuja; Lei Wang; Matthew Wetstein; S Ayan; Ugur Akgun; Firdevs Duru; Jean-Pierre Merlo; Alexi Mestvirishvili; Michael Miller; Edwin Norbeck; Jonathan Olson; Yasar Onel; Ianos Schmidt; Nural Akchurin; Kenneth Wayne Carrell; Kazim Gumus; Heejong Kim; Mario Spezziga; Ray Thomas; Richard Wigmans; Marc M Baarmand; Hamit Mermerkaya; I Vodopyanov; Laird Kramer; Stephan Linn; Pete Markowitz; German Martínez; Priscilla Cushman; Yousi Ma; Brian Sherwood; Lucien Marcus Cremaldi; Jim Reidy; David A Sanders; Wade Cameron Fisher; Christopher Tully; Sharon Hagopian; Vasken Hagopian; Kurtis F Johnson; Virgil E Barnes; Alvin T Laasanen; Arnold Pompos

2006-01-01

263

AGILE Mini-Calorimeter gamma-gay burst catalog  

E-print Network

The Mini-Calorimeter of the AGILE satellite can observe the high-energy part of gamma-ray bursts with good timing capability. We present the data of the 85 hard gamma-gay bursts observed by the Mini-Calorimeter since the launch (April 2007) until October 2009. We report the timing data for 84 and spectral data for 21 burst.

Galli, M; Fuschino, F; Labanti, C; Argan, A; Barbiellini, G; Bulgarelli, A; Cattaneo, P W; Colafrancesco, S; Del Monte, E; Feroci, M; Giannotti, F; Giuliani, A; Longo, F; Mereghetti, S; Morselli, A; Pacciani, L; Pellizzoni, A; Pittori, C; Rapisarda, M; Rappoldi, A; Tavani, M; Trifoglio, M; Trois, A; Vercellone, S; Verrecchia, F

2013-01-01

264

A double calorimeter for 10-W level laser power measurements  

Microsoft Academic Search

A new type calorimeter for precise measurement of 10-W level laser power has been fabricated. This is a double configuration consisting of an absorbing unit made of a disk absorber and an isothermal type calorimeter. These components have a fast response and high accuracy. The principle of the measurement is based on the dc substitution method. The ratio of the

Michiyuki Endo; Takeumi Inoue

2005-01-01

265

A calorimeter for infra-red laser power measurement  

Microsoft Academic Search

A description is given of a calorimeter suitable for measuring the output power from continuous wave carbon-dioxide lasers. The calorimeter is absolutely calibrated and may be used to measure powers from 1 W to 1 kW, with an error of not more than 3% at 100 W.

H A Kellock

1969-01-01

266

High energy single pulse laser calorimeter  

SciTech Connect

A single pulse laser calorimeter apparatus utilizing the high laser output pulse to measure the energy output of the laser. The output energy of the laser is absorbed in a NG-1 type glass panel and is transformed into heat. The heat is transferred to an aluminum back plate which is epoxied to the glass and is detected by a series of forward biased p-n junction diodes that are epoxied to the aluminum plate. The voltage drop across the diodes is monitored with a high impedance measuring device such as a strip chart recorder or A/D converter.

Beggs, W.R.; Crane, B.D.

1984-03-13

267

Upgrade of the Belle II electromagnetic calorimeter  

NASA Astrophysics Data System (ADS)

The construction of the SuperKEKB electron-positron collider and upgrade of the Belle II spectrometer are going on at KEK aiming at high precision measurements in bottom, charm and tau flavor sectors. We describe a replacement of the electronics for the CsI(Tl) crystal calorimeter with PIN-PD readout to match the luminosity increase up to 8 × 1035 cm?2s?1 at maximum. A plan to replace CsI(Tl) crystals with pure CsI in the endcaps is also mentioned.

Miyabayashi, K.; Aulchenko, V.; Cheon, B. G.; Kuzmin, A. S.; Matvienko, D.; Nakamura, I.; Shebalin, V.; Shwartz, B.; Unno, Y.; Usov, Y.; Vinokurova, A.; Zhulanov, V.

2014-09-01

268

ATLAS High-Level Trigger performance for calorimeter-based algorithms in LHC Run-I  

NASA Astrophysics Data System (ADS)

During Run-I of the Large Hadron Collider at CERN the ATLAS detector recorded more than 26 fb-1 of proton-proton collision events. One of the key components of the ATLAS detector is its trigger system. In order to keep up with the fast-paced evolution of the beam conditions during Run-I, the trigger selection had to be constantly adapted. For most of the calorimeter-based triggers only modest modifications of the thresholds had to be made, given the change in instantaneous luminosity of five orders of magnitude. This was achieved by various improvements in the High-Level Trigger algorithms, in several places abandoning the original RoI-based concept and introducing new features to overcome previous limitations. The excellent performance of both ATLAS and the LHC made possible the discovery of a new particle already during Run-I, the long-sought Higgs boson.

Mann, A.; Atlas Collaboration

2014-06-01

269

Soft error rate estimations of the Kintex-7 FPGA within the ATLAS Liquid Argon (LAr) Calorimeter  

NASA Astrophysics Data System (ADS)

This paper summarizes the radiation testing performed on the Xilinx Kintex-7 FPGA in an effort to determine if the Kintex-7 can be used within the ATLAS Liquid Argon (LAr) Calorimeter. The Kintex-7 device was tested with wide-spectrum neutrons, protons, heavy-ions, and mixed high-energy hadron environments. The results of these tests were used to estimate the configuration ram and block ram upset rate within the ATLAS LAr. These estimations suggest that the configuration memory will upset at a rate of 1.1 × 10-10 upsets/bit/s and the bram memory will upset at a rate of 9.06 × 10-11 upsets/bit/s. For the Kintex 7K325 device, this translates to 6.85 × 10-3 upsets/device/s for configuration memory and 1.49 × 10-3 for block memory.

Wirthlin, M. J.; Takai, H.; Harding, A.

2014-01-01

270

Improving Code Quality of the Compact Muon Solenoid Electromagnetic Calorimeter Control Software to Increase System Maintainability  

E-print Network

The Detector Control System (DCS) software of the Electromagnetic Calorimeter (ECAL) of the Compact Muon Solenoid (CMS) experiment at CERN is designed primarily to enable safe and efficient operation of the detector during Large Hadron Collider (LHC) data-taking periods. Through a manual analysis of the code and the adoption of ConQAT [*], a software quality assessment toolkit, the CMS ECAL DCS team has made significant progress in reducing complexity and improving code quality, with observable results in terms of a reduction in the effort dedicated to software maintenance. This paper explains the methodology followed, including the motivation to adopt ConQAT, the specific details of how this toolkit was used and the outcomes that have been achieved. [*] Continuous Quality Assessment Toolkit, www.conqat.org

Holme, Oliver; Dissertori, G; Djambazov, L; Lustermann, W; Zelepoukine, S

2014-01-01

271

Spectral response data for development of cool coloured tile coverings  

NASA Astrophysics Data System (ADS)

Most ancient or traditional buildings in Italy show steep-slope roofs covered by red clay tiles. As the rooms immediately below the roof are often inhabited in historical or densely urbanized centres, the combination of low solar reflectance of tile coverings and low thermal inertia of either wooden roof structures or sub-tile insulation panels makes summer overheating a major problem. The problem can be mitigated by using tiles coated with cool colours, that is colours with the same spectral response of clay tiles in the visible, but highly reflecting in the near infrared range, which includes more than half of solar radiation. Cool colours can yield the same visible aspect of common building surfaces, but higher solar reflectance. Studies aimed at developing cool colour tile coverings for traditional Italian buildings have been started. A few coating solutions with the typical red terracotta colour have been produced and tested in the laboratory, using easily available materials. The spectral response and the solar reflectance have been measured and compared with that of standard tiles.

Libbra, Antonio; Tarozzi, Luca; Muscio, Alberto; Corticelli, Mauro A.

2011-03-01

272

Coal fly ash utilization: low temperature sintering of wall tiles.  

PubMed

We present here a study of the sintering of fly ash and its mixture with low alkali pyrophyllite in the presence of sodium hexa meta phosphate (SHMP), a complex activator of sintering, for the purpose of wall tile manufacturing. The sintering of fly ash with SHMP in the temperature range 925-1050 degrees C produces tiles with low impact strength; however, the incremental addition of low alkali pyrophyllite improves impact strength. The impact strength of composites with >or=40% (w/w) pyrophyllite in the fly ash-pyrophyllite mix satisfies the acceptable limit (19.6 J/m) set by the Indian Standards Institute for wall tiles. Increasing the pyrophyllite content results in an increase in the apparent density of tiles, while shrinkage and water absorption decrease. The strength of fly ash tiles is attributed to the formation of a silicophosphate phase; in pyrophyllite rich tiles, it is attributed to the formation of a tridymite-structured T-AlPO(4) phase. Scanning electron micrographs show that the reinforcing rod shaped T-AlPO(4) crystals become more prominent as the pyrophyllite content increases in the sintered tiles. PMID:17950591

Chandra, Navin; Sharma, Priya; Pashkov, G L; Voskresenskaya, E N; Amritphale, S S; Baghel, Narendra S

2008-01-01

273

D0 Decomissioning : Storage of Depleted Uranium Modules Inside D0 Calorimeters after the Termination of D0 Experiment  

SciTech Connect

Dzero liquid Argon calorimeters contain hadronic modules made of depleted uranium plates. After the termination of DO detector's operation, liquid Argon will be transferred back to Argon storage Dewar, and all three calorimeters will be warmed up. At this point, there is no intention to disassemble the calorimeters. The depleted uranium modules will stay inside the cryostats. Depleted uranium is a by-product of the uranium enrichment process. It is slightly radioactive, emits alpha, beta and gamma radiation. External radiation hazards are minimal. Alpha radiation has no external exposure hazards, as dead layers of skin stop it; beta radiation might have effects only when there is a direct contact with skin; and gamma rays are negligible - levels are extremely low. Depleted uranium is a pyrophoric material. Small particles (such as shavings, powder etc.) may ignite with presence of Oxygen (air). Also, in presence of air and moisture it can oxidize. Depleted uranium can absorb moisture and keep oxidizing later, even after air and moisture are excluded. Uranium oxide can powder and flake off. This powder is also pyrographic. Uranium oxide may create health problems if inhaled. Since uranium oxide is water soluble, it may enter the bloodstream and cause toxic effects.

Sarychev, Michael; /Fermilab

2011-09-21

274

Tile-Image Merging and Delivering for Virtual Camera Services on Tiled-Display for Real-Time Remote Collaboration  

NASA Astrophysics Data System (ADS)

The tiled-display system has been used as a Computer Supported Cooperative Work (CSCW) environment, in which multiple local (and/or remote) participants cooperate using some shared applications whose outputs are displayed on a large-scale and high-resolution tiled-display, which is controlled by a cluster of PC's, one PC per display. In order to make the collaboration effective, each remote participant should be aware of all CSCW activities on the titled display system in real-time. This paper presents a capturing and delivering mechanism of all activities on titled-display system to remote participants in real-time. In the proposed mechanism, the screen images of all PC's are periodically captured and delivered to the Merging Server that maintains separate buffers to store the captured images from the PCs. The mechanism selects one tile image from each buffer, merges the images to make a screen shot of the whole tiled-display, clips a Region of Interest (ROI), compresses and streams it to remote participants in real-time. A technical challenge in the proposed mechanism is how to select a set of tile images, one from each buffer, for merging so that the tile images displayed at the same time on the tiled-display can be properly merged together. This paper presents three selection algorithms; a sequential selection algorithm, a capturing time based algorithm, and a capturing time and visual consistency based algorithm. It also proposes a mechanism of providing several virtual cameras on tiled-display system to remote participants by concurrently clipping several different ROI's from the same merged tiled-display images, and delivering them after compressing with video encoders requested by the remote participants. By interactively changing and resizing his/her own ROI, a remote participant can check the activities on the tiled-display effectively. Experiments on a 3 × 2 tiled-display system show that the proposed merging algorithm can build a tiled-display image stream synchronously, and the ROI-based clipping and delivering mechanism can provide individual views on the tiled-display system to multiple remote participants in real-time.

Choe, Giseok; Nang, Jongho

275

57. ORIGINAL TILE PRESS AND EXPERIMENTAL DENTAL KILN, SECOND FLOOR, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

57. ORIGINAL TILE PRESS AND EXPERIMENTAL DENTAL KILN, SECOND FLOOR, NORTH WING, HENRY MERCER USED THE KILN FOR HIS EARLIEST GLAZE TESTS. THE PRESS WAS DESIGNED TO BE USED WITH METAL CASED MOLDS. SINCE ONLY THE EARLIEST TILE DESIGNS ARE IN METAL CASES. THIS TECHNIQUE WAS PROBABLY DISCONTINUED. THIS PRESS WAS, THEREFORE, PROBABLY NOT USED EXTENSIVELY AT THIS SITE. THE UPPER PART OF GLAZE KILN No. 2 IS AT THE LEFT REAR. - Moravian Pottery & Tile Works, Southwest side of State Route 313 (Swamp Road), Northwest of East Court Street, Doylestown, Bucks County, PA

276

Hypervelocity impact testing of Shuttle Orbiter thermal protection system tiles  

NASA Technical Reports Server (NTRS)

Results are presented from a series of 22 hypervelocity impact tests carried out on the thermal protection system (TPS) for the Shuttle Orbiter. Both coated and uncoated low-density (0.14 g/cu cm) LI-900 and high-density (0.35 g/cu cm) LI-2200 tiles were tested. The results are used to develop the penetration and damage correlations which can be used in meteoroid and debris hazard analyses for spacecraft with a ceramic tile TPS. It is shown that tile coatings act as a 'bumper' to fragment the impacting projectile, with thicker coating providing increased protection.

Christiansen, Eric L.; Ortega, Javier

1990-01-01

277

Floor tile and mastic removal project report  

SciTech Connect

A test program was developed and coordinated with State and Federal Regulators and carried out at Fort Sill, Oklahoma. This program was carefully designed to create the worst conditions in order to evaluate whether asbestos fibers are released when asbestos containing floor tile and mastic are removed. There were over 1,000 samples taken and analyzed during the execution of the program. The conclusions reached were based upon analysis of the critical samples using the Transmission Electron Microscope (TEM) technology. Additionally, the TEM procedures were used to evaluate personnel samples to determine whether those fibers found were asbestos or other materials. Most of the (TEM) samples were analyzed by the US Environmental Protection Agency (EPA) Risk Reduction Engineering Laboratory in Cincinnati, Ohio.

Not Available

1992-11-01

278

Temperature effects in the ATIC BGO calorimeter  

NASA Astrophysics Data System (ADS)

The Advanced Thin Ionization Calorimeter (ATIC) Balloon Experiment had a successful test flight and a science flight in 2000 01 and 2002 03 and an unsuccessful launch in 2005 06 from McMurdo, Antarctica, returning 16 and 19 days of flight data. ATIC is designed to measure the spectra of cosmic rays (protons to iron). The instrument is composed of a Silicon matrix detector followed by a carbon target interleaved with scintillator tracking layers and a segmented BGO calorimeter composed of 320 individual crystals totaling 18 radiation lengths to determine the particle energy. BGO (Bismuth Germanate) is an inorganic scintillation crystal and its light output depends not only on the energy deposited by particles but also on the temperature of the crystal. The temperature of balloon instruments during flight is not constant due to sun angle variations as well as differences in albedo from the ground. The change in output for a given energy deposit in the crystals in response to temperature variations was determined.

Isbert, J.; Adams, J. H.; Ahn, H. S.; Bashindzhagyan, G. L.; Batkov, K. E.; Christl, M.; Fazely, A. R.; Ganel, O.; Gunashingha, R. M.; Guzik, T. G.; Chang, J.; Kim, K. C.; Kouznetsov, E. N.; Lin, Z. W.; Panasyuk, M. I.; Panov, A. D.; Schmidt, W. K. H.; Seo, E. S.; Sokolskaya, N. V.; Watts, John W.; Wefel, J. P.; Wu, J.; Zatsepin, V. I.

2008-08-01

279

Combined Liquid Xenon and crystal CsI calorimeter of the CMD-3 detector  

NASA Astrophysics Data System (ADS)

The barrel electromagnetic calorimeter of the CMD-3 detector consists of two subsystems: the Liquid Xenon calorimeter and the calorimeter based on CsI scintillation crystals. Its structure and main characteristics are presented. The energy calibration procedures of the combined calorimeter are described.

Shebalin, V. E.; Anisenkov, A. V.; Bashtovoy, N. S.; Epifanov, D. A.; Erofeev, A. L.; Grebenuk, A. A.; Karpov, S. V.; Khazin, B. I.; Kovalenko, O. A.; Kozyrev, A. N.; Kuzmin, A. S.; Mikhailov, K. Yu; Razuvaev, G. P.; Ruban, A. A.; Shwartz, B. A.; Titov, V. M.; Talyshev, A. A.; Yudin, Yu V.

2014-10-01

280

Statistical Hadronization and Holography  

E-print Network

In this paper we consider some issues about the statistical model of the hadronization in a holographic approach. We introduce a Rindler like horizon in the bulk and we understand the string breaking as a tunneling event under this horizon. We calculate the hadron spectrum and we get a thermal, and so statistical, shape for it.

Jacopo Bechi

2009-12-14

281

Measurement of Tritium Surface Distribution on TFTR Bumper Limiter Tiles  

SciTech Connect

The tritium surface distribution on graphite tiles used in the Tokamak Fusion Test Reactor (TFTR) bumper limiter and exposed to TFTR deuterium-tritium (D-T) discharges from 1993 to 1997 was measured by the Tritium Imaging Plate Technique (TIPT). The TFTR bumper limiter shows both re-/co-deposition and erosion. The tritium images for all tiles measured are strongly correlated with erosion and deposition patterns, and long-term tritium retention was found in the re-/co-depositions and flakes. The CFC tiles located at erosion dominated areas clearly showed their woven structure in their tritium images owing to different erosion yields between fibers and matrix. Significantly high tritium retention was observed on all sides of the erosion tiles, indicating carbon transport via repetition of local erosion/deposition cycles.

K. Sugiyama; T. Tanabe; C.H. Skinner; C.A. Gentile

2004-06-28

282

Carbon erosion and deposition on the ASDEX Upgrade divertor tiles  

NASA Astrophysics Data System (ADS)

Carbon deposition and erosion were measured on ASDEX Upgrade divertor tiles and below the roof baffle during the operation period 2002/2003. The inner divertor is a net carbon deposition area, while a large fraction of the outer divertor is erosion dominated and the roof baffle tiles show a complicated distribution of erosion and deposition areas. In total, 43.7 g B + C were redeposited, of which 88% were deposited on tiles and 9% in remote areas (below roof baffle, on vessel wall structures). 0.6 g C was pumped out as volatile hydrocarbon molecules. Carbon sources in the main chamber are too low by a factor of more than ten to explain the observed carbon divertor deposition. Carbon erosion is observed at the outer divertor strike point tiles, but it is arguable if material can be transported from the outer strike point to the inner divertor.

Mayer, M.; Rohde, V.; Likonen, J.; Vainonen-Ahlgren, E.; Krieger, K.; Gong, X.; Chen, J.; ASDEX Upgrade Team

2005-03-01

283

Transcript normalization and segmentation of tiling array data.  

PubMed

For the analysis of transcriptional tiling arrays we have developed two methods based on state-of-the-art machine learning algorithms. First, we present a novel transcript normalization technique to alleviate the effect of oligonucleotide probe sequences on hybridization intensity. It is specifically designed to decrease the variability observed for individual probes complementary to the same transcript. Applying this normalization technique to Arabidopsis tiling arrays, we are able to reduce sequence biases and also significantly improve separation in signal intensity between exonic and intronic/intergenic probes. Our second contribution is a method for transcript mapping. It extends an algorithm proposed for yeast tiling arrays to the more challenging task of spliced transcript identification. When evaluated on raw versus normalized intensities our method achieves highest prediction accuracy when segmentation is performed on transcript-normalized tiling array data. PMID:18229713

Zeller, Georg; Henz, Stefan R; Laubinger, Sascha; Weigel, Detlef; Rätsch, Gunnar

2008-01-01

284

45. Everett, Weinreb, photographer DETAIL, CEMENT TILE PATTERN FROM RECEPTION ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

45. Everett, Weinreb, photographer DETAIL, CEMENT TILE PATTERN FROM RECEPTION HALL LOOKING EAST ACROSS ARRIVAL LOBBY FLOOR - Los Angeles Union Passenger Terminal, Tracks & Shed, 800 North Alameda Street, Los Angeles, Los Angeles County, CA

285

44. Everett Weinreb, photographer DETAIL, CEMENT TILE PATTERN, FROM LOGGIA ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

44. Everett Weinreb, photographer DETAIL, CEMENT TILE PATTERN, FROM LOGGIA LOOKING EAST ACROSS RECEPTION HALL - Los Angeles Union Passenger Terminal, Tracks & Shed, 800 North Alameda Street, Los Angeles, Los Angeles County, CA

286

Glue drops inside hadrons  

E-print Network

We present experimental evidences for the existence of a semi-hard scale in light hadrons. This includes the suppression of gluon radiation that is seen in high mass hadron diffraction; the weak energy dependence of hadronic total cross sections; the small value of the Pomeron trajectory slope measured in photoproduction of J/Psi; the weakness of gluon shadowing in nuclei; shortage of gluons in the proton revealed by an unusual behavior of the proton structure function in the soft limit, and the enhanced intrinsic transverse momentum of quarks and gluons, which considerably exceeds the inverse hadronic size. All these observations suggest that gluons in hadrons are located within spots of a small size relative to the confinement radius.

B. Z. Kopeliovich; B. Povh; Ivan Schmidt

2006-07-31

287

On the Minimum Weight Steiner Triangular Tiling problem  

SciTech Connect

In this paper, we introduce the Minimum Weight Steiner Triangular Tiling problem, which is a generalization of the Minimum Weight Steiner Triangulation. Contrary to the conjecture of Eppstein that the Minimum Weight Steiner Triangulation of a convex polygon has the property that the Steiner points all lie on the boundary of the polygon [Epp94], we show that the Steiner points of a Minimum Weight Steiner Triangular Tiling could lie in the interior of a convex polygon.

Doddi, S.; Zhu, B.

1995-04-01

288

Air Sampling During Asbestos Abatement of Floor Tile and Mastic  

Microsoft Academic Search

Exposure measurements, area and personal samples, were collected during asbestos abatement of floor tile and mastic in a three story dormitory type building (25,000 square feet-abated) in Pennsylvania, USA. Floor tile and mastic were both identified as ACM by polarized light microscopy (PLM). Asbestos was determined to be of the chrysotile variety and was between 3-7% for both types of

J. H. Lange; K. W. Thomulka

2000-01-01

289

56. ORIGINAL MOLDS. THE MORAVIAN POTTERY AND TILE WORKS HAS ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

56. ORIGINAL MOLDS. THE MORAVIAN POTTERY AND TILE WORKS HAS APPROXIMATELY 6,000 PLASTER MOLDS OF VARIOUS TYPES, INCLUDING THE DEEP CAVITY MOLDS IN THE CENTER OF THE PHOTOGRAPH. THESE MOLDS PRODUCED ALLEGORICAL FIGURES TO BE INSTALLED AROUND THE CORNICES OF PUBLIC SCHOOLS. - Moravian Pottery & Tile Works, Southwest side of State Route 313 (Swamp Road), Northwest of East Court Street, Doylestown, Bucks County, PA

290

D0 Silicon Upgrade: End Calorimeter Transfer Bridge Modification  

SciTech Connect

During the assembly of major components into the D0 Detector, a transfer bridge was required to move the North-End Calorimeter from the clean room,over the cable bridge and onto the north sidewalk of the assembly hall. This experiment is now at the beginning stages of the next phase, namely the upgrade of this Detector for future physics research. A major piece of this upgrade is the installation of a solenoid magnet into the Central Calorimeter. In order to accomplish this, the South End Calorimeter has to be removed from the detector and the North End Calorimeter must be moved an additional 20-inch from its nominal open position (total 60-inch movement). The South End Calorimeter will be removed from the detector using the equipment designed for its installation. The calorimeter will be staged on the south sidewalk during the installation of the solenoid magnet and the central tracking systems. The North End Calorimeter is moved 60-inch to give more space between calorimeters during magnet, tracker and cable installation work. This movement will allow the calorimeter to remain coupled to the cryo system. However, this movement requires an extension be added to the center beam. This extension will support the rear wheels of the calorimeter and in the case of the end calorimeters, carry the majority of the weight. The extension is to be a modification of the transfer bridge. This modification, basically has T1 steel blocks added to one end and legs to the sidewalk supports at the other. The T1 steel blocks are notched to fit into the center beam porches and are welded to bridge rails. This design is the same as that for the installation bridge (3740.312-ME-273456), including the welds and weld procedures which are identical in both cases. Since load testing is impractical, the critical welds will be non-destructive tested by ultrasonic means. The laboratory, through the FESS Department, has a contract with M.Q.S. Inspection Inc. The results of this testing will be submitted to the panel for review before the bridge is put into use. It is noted here, that M.Q.S. did perform an ultrasonic test on the critical welds of the EC-CC installation bridge on Oct. 2, 1990. That test demonstrated the weld penetrations between the T1 and A-36 materials. Copies were given to the committee at that time. A copy of the original North End Cap Calorimeter Installation Note is attached for reference.

Stredde, H.J.; /Fermilab

1996-07-10

291

Radioactively induced noise in gas-sampling uranium calorimeters  

SciTech Connect

The signal induced by radioactivity of a U/sup 238/ absorber in a cell of a gas-sampling uranium calorimeter was studied. By means of Campbell's theorem, the levels of the radioactively induced noise in uranium gas-sampling calorimeters was calculated. It was shown that in order to obtain similar radioactive noise performance as U-liquid argon or U-scintillator combinations, the ..cap alpha..-particles from the uranium must be stopped before entering the sensing volume of gas-uranium calorimeters.

Gordon, H.A.; Rehak, P.

1982-01-01

292

New tools for the simulation and design of calorimeters  

SciTech Connect

Two new approaches to the simulation and design of large hermetic calorimeters are presented. Firstly, the Shower Library scheme used in the fast generation of showers in the Monte Carlo of the calorimeter for the D-Zero experiment at the Fermilab Tevatron is described. Secondly, a tool for the design future calorimeters is described, which can be integrated with a computer aided design system to give engineering designers an immediate idea of the relative physics capabilities of different geometries. 9 refs., 6 figs., 1 tab.

Womersley, W.J.

1989-07-10

293

Advanced Thin Ionization Calorimeter (ATIC) Update  

NASA Astrophysics Data System (ADS)

The ATIC experiment is designed to measure the composition and energy spectra of Z = 1 to 28 cosmic rays over the energy range ~ 10 GeV - 100 TeV. ATIC is comprised of an eight-layer, 18 radiation length deep Bismuth Germanate (BGO) calorimeter, downstream of a 0.75 nuclear interaction length graphite target and a ~ 1 m^2 finely segmented silicon charge detector. Interleaved with the graphite layers are three scintillator strip hodoscopes for pre-triggering and tracking. ATIC flew for the first time on a Long Duration Balloon (LDB) launched from McMurdo, Antarctica in January 2001. During its 16-day flight ATIC collected more than 30 million science events, along with housekeeping, calibration, and rate data. This presentation will describe the ATIC data processing, including calibration and efficiency corrections, and show results from analysis of this dataset. The next launch is planned for December 2002.

Ahn, H. S.; Ganel, O.; Kim, K. C.; Naqvi, S. A.; Seo, E. S.; Sina, R.; Wang, J. Z.; Wu, J.; Case, G.; Granger, D.; Guzik, T. G.; Isbert, J. B.; Price, B.; Stewart, M.; Wefel, J. P.; Adams, J. H.; Christl, M.; Fazely, A. R.; Gunasingha, R.; Han, Y. J.; Kim, H. J.; Kim, S. K.; Bashindzhagyan, G.; Kouznetsov, E.; Panasyuk, M.; Panov, A.; Samsonov, G.; Sokolskaya, N.; Voronin, A.; Zatsepin, V.; Chang, J.; Schmidt, W. K. H.

2002-04-01

294

Advanced Thin Ionization Calorimeter (ATIC) Balloon Experiment  

NASA Technical Reports Server (NTRS)

During grant NAG5-5064, Louisiana State University (LSU) led the ATIC team in the development, construction, testing, accelerator validation, pre-deployment integration and flight operations of the Advanced Thin Ionization Calorimeter (ATIC) Balloon Experiment. This involved interfacing among the ATIC collaborators (UMD, NRL/MSFC, SU, MSU, WI, SNU) to develop a new balloon payload based upon a fully active calorimeter, a carbon target, a scintillator strip hodoscope and a pixilated silicon solid state detector for a detailed investigation of the very high energy cosmic rays to energies beyond 10(exp 14) eV/nucleus. It is in this very high energy region that theory predicts changes in composition and energy spectra related to the Supernova Remnant Acceleration model for cosmic rays below the "knee" in the all-particle spectrum. This report provides a documentation list, details the anticipated ATIC science return, describes the particle detection principles on which the experiment is based, summarizes the simulation results for the system, describes the validation work at the CERN SPS accelerator and details the balloon flight configuration. The ATIC experiment had a very successful LDB flight from McMurdo, Antarctica in 12/00 - 1/01. The instrument performed well for the entire 15 days. Preliminary data analysis shows acceptable charge resolution and an all-particle power law energy deposition distribution not inconsistent with previous measurements. Detailed analysis is underway and will result in new data on the cosmic ray charge and energy spectra in the GeV - TeV energy range. ATIC is currently being refurbished in anticipation of another LDB flight in the 2002-03 period.

Wefel, John P.; Guzik, T. Gregory

2001-01-01

295

Thermal performance of a mechanically attached ablator tile for on-orbit repair of shuttle TPS  

NASA Technical Reports Server (NTRS)

The reusable surface insulation (RSI) material used in the shuttle thermal protection system is susceptible to damage. If any RSI tiles are damaged or lost during ascent, they must be repaired or replaced prior to entry. One approach to replacing a damaged or missing RSI tile consists of mechanically attaching a tile of ablation material in the place of the RSI tile. The thermal performance of this type of repair tile was evaluated in a simulated entry heating environment. The test specimen consisted of the ablator repair tile mechanically fastened to the strain isolation pad and surrounded by RSI tiles. The evaluation of the thermal performance was based on temperature response, surface integrity, and predicted flight performance. When the ablator tile protruded 1/8 inch above the surrounding RSI tiles, the forward facing steps caused significant inflow of hot gas down the ablator RSI joints and this inflow caused greatly increased back surface temperatures.

Thompkins, S. S.; Pittman, C. M.; Stacey, A. B., Jr.

1980-01-01

296

Phase change material in floor tiles for thermal energy storage  

NASA Astrophysics Data System (ADS)

Traditional passive solar systems have relied on sensible heat storage for energy savings. Recent research has investigated taking advantage of latent heat storage for additional energy savings. This is accomplished by the incorporation of phase change material into building materials used in traditional passive applications. Trombe walls, ceilings and floors can all be enhanced with phase change materials. This research introduces a new flooring material that incorporates a phase change material ready for commercial manufacture. An agglomerate floor tile containing 20% by mass of encapsulated octadecane has been manufactured. Flexural and compressive strength of 7.4 MPa and 24.5 MPa respectively, were measured for the tile. Peak melting transition temperature was determined to be 27.2°C with a latent heat of 33.9 J/g of tile. Structural and thermal performance of the tile surpassed that of a typical ceramic tile. Each tile was composed of quartz, resin and phase change material. Statistical modeling was performed to analyze the response of flexural and compressive strength on varying amounts of quartz, resin and phase change material. Resulting polynomials described the effect of adding phase change material into the tile. With as little as 10% by mass of phase change material, the strength was reduced to less than 50% of tile without phase change material. It was determined that the maximum phase change material content to attain structural integrity greater than ceramic tile was 20% by mass. The statistical analysis used for this research was based on mixture experiments. A procedure was developed to simplify the selection of data points used in the fit of the polynomials to describe the response of flexural and compressive strengths. Analysis of energy savings using this floor tile containing 20% by mass of phase change material was performed as an addendum to this research. A known static simulation method, SLR (solar load ratio), was adapted to include latent heat storage. In addition a dynamic simulation was also performed using BLAST. The program had to be modified to simulate latent heat storage. Annual heating consumptions from both methods were estimated to be reduced by approximately 5%.

Lee, Amy Sarah

297

Foam on Tile Impact Modeling for the STS-107 Investigation  

NASA Technical Reports Server (NTRS)

Following the breakup of the Space Shuttle Columbia during reentry a NASA/Contractor investigation team was formed to examine the probable damage inflicted on Orbiter Thermal Protection System elements by impact of External Tank insulating foam projectiles. The authors formed a working subgroup within the larger team to apply the Smooth Particle Hydrodynamics code SPHC to the damage estimation problem. Numerical models of the Orbiter's tiles and of the Tank's foam were constructed and used as inputs into the code. Material properties needed to properly model the tiles and foam were obtained from other working subgroups who performed tests on these items for this purpose. Two- and three-dimensional models of the tiles were constructed, including the glass outer layer, the main body of LI-900 insulation, the densified lower layer of LI-900, the Nomex felt mounting layer, and the Aluminum 2024 vehicle skin. A model for the BX-250 foam including porous compression, elastic rebound, and surface erosion was developed. Code results for the tile damage and foam behavior were extensively validated through comparison with Southwest Research Institute foam-on-tile impact experiments carried out in 1999. These tests involved small projectiles striking individual tiles and small tile arrays. Following code and model validation we simulated impacts of larger foam projectiles on the examples of tile systems used on the Orbiter. Results for impacts on the main landing gear door are presented in this paper, including effects of impacts at several angles, and of rapidly rotating projectiles. General results suggest that foam impacts on tiles at about 500 mph could cause appreciable damage if the impact angle is greater than about 20 degrees. Some variations of the foam properties, such as increased brittleness or increased density could increase damage in some cases. Rotation up to 17 rps failed to increase the damage for the two cases considered. This does not rule out other cases in which the rotational energy might lead to an increase in tile damage, but suggests that in most cases rotation will not be an important factor.

Stellingwerf, R. F.; Robinson, J. H.; Richardson, S.; Evans, S. W.; Stallworth, R.; Hovater, M.

2004-01-01

298

Results from pion calibration runs for the H 1 liquid argon calorimeter and comparisons with simulations  

NASA Astrophysics Data System (ADS)

We present results on calibration runs performed with pions at the CERN SPS for different modules of the H 1 liquid argon calorimeter which consists of an electromagnetic section with lead absorbers and a hadronic section with steel absorbers. The data cover an energy range from 3.7 to 205 GeV. Detailed comparisons of the data and simulation with GHEISHA 8 in the framework of GEANT 3.14 are presented. The measured pion induced shower profiles are well described by the simulation. The total signal of pions on an energy scale determined from electron measurements is reproduced to better than 3% in various module configurations. After application of weighting functions, determined from Monte Carlo data and needed to achieve compensation, the reconstructed measured energies agree with simulation to about 3%. The energies of hadronic showers are reconstructed with a resolution of about {50%}/{?E} ? 2% . This result is achieved by inclusion of signals from an iron streamer tube tail catcher behind the liquid argon stacks.

Andrieu, B.; Bán, J.; Barrelet, E.; Bergstein, H.; Bernardi, G.; Besançon, M.; Binder, E.; Blume, H.; Borras, K.; Boudry, V.; Brasse, F.; Braunschweig, W.; Brisson, V.; Campbell, A. J.; Carli, T.; Colombo, M.; Coutures, Ch.; Cozzika, G.; David, M.; Delcourt, B.; Delbuono, L.; Devel, M.; Dingus, P.; Drescher, A.; Duboc, J.; Dünger, O.; Ebbinghaus, R.; Egli, S.; Ellis, N. N.; Feltesse, J.; Feng, Y.; Ferrarotto, F.; Flauger, W.; Flieser, M.; Gamerdinger, K.; Gayler, J.; Godfrey, L.; Goerlich, L.; Goldberg, M.; Grässler, R.; Greenshaw, T.; Greif, H.; Haguenauer, M.; Hajduk, L.; Hamon, O.; Hartz, P.; Haustein, V.; Haydar, R.; Hildesheim, W.; Huot, N.; Jabiol, M.-A.; Jacholkowska, A.; Jaffre, M.; Jung, H.; Just, F.; Kiesling, C.; Kirchhoff, Th.; Kole, F.; Korbel, V.; Korn, M.; Krasny, W.; Kubenka, J. P.; Küster, H.; Kurzhöfer, J.; Kuznik, B.; Lander, R.; Laporte, J.-F.; Lenhardt, U.; Loch, P.; Lüers, D.; Marks, J.; Martyniak, J.; Merz, T.; Naroska, B.; Nau, A.; Nguyen, H. K.; Niebergall, F.; Oberlack, H.; Obrock, U.; Ould-Saada, F.; Pascaud, C.; Pyo, H. B.; Rauschnabel, K.; Ribarics, P.; Rietz, M.; Royon, Ch.; Rusinov, V.; Sahlmann, N.; Sánchez, E.; Schacht, P.; Schleper, P.; von Schlippe, W.; Schmidt, C.; Schmidt, D.; Shekelyan, V.; Shooshtari, H.; Sirois, Y.; Staroba, P.; Steenbock, M.; Steiner, H.; Stella, B.; Straumann, U.; Turnau, J.; Tutas, J.; Urban, L.; Vallee, C.; Vecko, M.; Verrecchia, P.; Villet, G.; Vogel, E.; Wagener, A.; Wegener, D.; Wegner, A.; Wellisch, H.-P.; Yiou, T. P.; ?á?ek, J.; Zeitnitz, Ch.; Zomer, F.; H 1 Calorimeter Group

1993-12-01

299

Are Tiled Display Walls Needed for Astronomy?  

NASA Astrophysics Data System (ADS)

Clustering commodity displays into a Tiled Display Wall (TDW) provides a cost-effective way to create an extremely high resolution display, capable of approaching the image sizes now generated by modern astronomical instruments. Many research institutions have constructed TDWs on the basis that they will improve the scientific outcomes of astronomical imagery. We test this concept by presenting sample images to astronomers and non-astronomers using a standard desktop display (SDD) and a TDW. These samples include standard English words, wide field galaxy surveys and nebulae mosaics from the Hubble telescope. Our experiments show that TDWs provide a better environment than SDDs for searching for small targets in large images. They also show that astronomers tend to be better at searching images for targets than non-astronomers, both groups are generally better when employing physical navigation as opposed to virtual navigation, and that the combination of two non-astronomers using a TDW rivals the experience of a single astronomer. However, there is also a large distribution in aptitude amongst the participants and the nature of the content also plays a significant role in success.

Meade, Bernard F.; Fluke, Christopher J.; Manos, Steven; Sinnott, Richard O.

2014-08-01

300

The signal shape of a tower-type ionization calorimeter  

NASA Astrophysics Data System (ADS)

The electrical model of an ionization calorimeter tower with 20×25 cm2 lateral size and 6 nuclear lengths longitudinal size is studied experimentally. The signal propagation time along the tower structure is shown to be 160 ns, the tower characteristic impedance is 5 ?. The signal is significantly influenced by dispersion. The high counting rate operation of the calorimeter concerned requires perfect termination of the detector characteristic impedance to the amplifier input impedance.

Krasnokutsky, R. N.; Kurchaninov, L. L.; Petukhov, Yu. P.; Sushkov, V. V.; Shuvalov, R. S.

1992-10-01

301

Signal feedthroughs for the ATLAS barrel and endcap calorimeters  

SciTech Connect

The function, design, construction, testing, and installation of the signal feedthroughs for the barrel and endcap ATLAS liquid argon calorimeters are described. The feedthroughs provide a high density and radiation hard method to extract over 200 000 signals from the cryogenic environment of the calorimeters using an application of a design based on flexible kapton circuit board transmission lines. A model to describe the frequency dependent behavior of the transmission lines is also presented.

Axen, D.; Hackenburg, R.; Hoffmann, A.; Kane, S.; Lissauer, D.; Makowiecki, D.; Muller, T.; Pate, D.; Radeka, V.; Rahm, D.; Rehak, M.; Rescia, S.; Sexton, K.; Sondericker, J.; Birney, P.; Dowling, A.W.; Fincke-Keeler, M.; Hodges, T.; Holness, F.; Honkanen, N. [Department of Physics, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1 (Canada); Brookhaven National Laboratory, Upton, New York 11973-5000 (United States); Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, V8W 3P6 (Canada); TRIUMF, Vancouver, British Columbia, V6T 2A3 (Canada)] [and others

2005-06-15

302

The BaBar Electromagnetic Calorimeter: Status and Performance Improvements  

SciTech Connect

The electromagnetic calorimeter at the BABAR detector, part of the asymmetric B Factory at SLAC, measures photons in the energy range from 20 MeV to 8 GeV with high resolution. The current status of the calorimeter, now in its seventh year of operation, is being presented, as well as details on improvements made to the analysis code during the last years.

Bauer, Johannes M.; /SLAC

2006-01-20

303

Design, performance, and calibration of CMS forward calorimeter wedges  

Microsoft Academic Search

We report on the test beam results and calibration methods using high energy electrons, pions and muons with the CMS forward\\u000a calorimeter (HF). The HF calorimeter covers a large pseudorapidity region (), and is essential for a large number of physics channels with missing transverse energy. It is also expected to play a prominent\\u000a role in the measurement of forward

S. Abdullin; V. Abramov; B. Acharya; M. Adams; N. Akchurin; U. Akgun; E. W. Anderson; G. Antchev; M. Arcidy; S. Ayan; S. Aydin; M. Baarmand; K. Babich; D. Baden; M. N. Bakirci; Sud. Banerjee; Sun. Banerjee; R. Bard; V. Barnes; H. Bawa; G. Baiatian; G. Bencze; S. Beri; V. Bhatnagar; A. Bodek; H. Budd; K. Burchesky; T. Camporesi; K. Cankoçak; K. Carrell; S. Cerci; S. Chendvankar; Y. Chung; L. Cremaldi; P. Cushman; J. Damgov; P. de Barbaro; M. Deliomeroglu; A. Demianov; T. de Visser; L. Dimitrov; K. Dindar; S. Dugad; I. Dumanoglu; F. Duru; J. Elias; D. Elvira; I. Emeliantchik; S. Eno; E. Eskut; A. Fenyvesi; W. Fisher; J. Freeman; H. Gamsizkan; V. Gavrilov; V. Genchev; Y. Gershtein; I. Golutvin; P. Goncharov; T. Grassi; D. Green; A. Gribushin; B. Grinev; E. Gülmez; K. Gümüs; T. Haelen; S. Hagopian; V. Hagopian; M. Hashemi; J. Hauptman; E. Hazen; A. Heering; N. Ilyina; E. Isiksal; C. Jarvis; K. Johnson; V. Kaftanov; V. Kalagin; A. Kalinin; D. Karmgard; S. Kalmani; S. Katta; M. Kaur; M. Kaya; A. Kayis-Topaksu; R. Kellogg; A. Khmelnikov; H. Kim; I. Kisselevich; O. Kodolova; J. Kohli; V. Kolossov; A. Korablev; Y. Korneev; I. Kosarev; S. Koylu; L. Kramer; A. Krinitsyn; A. Krokhotin; V. Kryshkin; S. Kuleshov; A. Kumar; S. Kunori; P. Kurt; A. Kuzucu-Polatoz; A. Laasanen; V. Ladygin; A. Laszlo; C. Lawlor; D. Lazic; L. Levchuk; S. Linn; D. Litvintsev; L. Litov; S. Los; V. Lubinsky; V. Lukanin; Y. Ma; E. Machado; J. Mans; P. Markowitz; V. Massolov; G. Martinez; K. Mazumdar; J. P. Merlo; H. Mermerkaya; G. Mescheryakov; A. Mestvirishvili; M. Miller; M. Mohammadi-Najafabadi; P. Moissenz; N. Mondal; P. Nagaraj; E. Norbeck; J. Olson; Y. Onel; G. Onengut; N. Ozdes-Koca; C. Ozkan; H. Ozkurt; S. Ozkorucuklu; S. Paktinat; A. Pal; M. Patil; A. Penzo; S. Petrushanko; A. Petrosyan; V. Pikalov; S. Piperov; V. Podrasky; A. Pompos; C. Posch; W. Qiang; L. Reddy; J. Reidy; R. Ruchti; E. Rogalev; J. Rohlf; A. Ronzhin; A. Ryazanov; G. Safronov; D. A. Sanders; C. Sanzeni; L. Sarycheva; B. Satyanarayana; I. Schmidt; S. Sekmen; S. Semenov; V. Senchishin; S. Sergeyev; M. Serin-Zeyrek; R. Sever; J. Singh; A. Sirunyan; A. Skuja; S. Sharma; B. Sherwood; N. Shumeiko; V. Smirnov; K. Sogut; P. Sorokin; M. Spezziga; R. Stefanovich; V. Stolin; L. Sulak; I. Suzuki; V. Talov; K. Teplov; R. Thomas; H. Topakli; C. Tully; L. Turchanovich; A. Ulyanov; I. Vankov; I. Vardanyan; F. Varela; M. Vergili; P. Verma; G. Vesztergombi; R. Vidal; A. Vishnevskiy; E. Vlassov; I. Vodopiyanov; A. Volkov; A. Volodko; L. Wang; M. Wetstein; D. Winn; R. Wigmans; J. Whitmore; S. X. Wu; E. Yazgan; A. Yershov; T. Yetkin; P. Zalan; A. Zarubin; M. Zeyrek

2008-01-01

304

Uncertainty of calorimeter measurements at NREL's high flux solar furnace  

NASA Astrophysics Data System (ADS)

The uncertainties of the calorimeter and concentration measurements at the High Flux Solar Furnace (HFSF) at the National Renewable Energy Laboratory (NREL) are discussed. Two calorimeter types have been used to date. One is an array of seven commercially available circular foil calorimeters (gardon or heat flux gages) for primary concentrator peak flux (up to 250 W/sq cm). The second is a cold-water calorimeter designed and built by the University of Chicago to measure the average exit power of the reflective compound parabolic secondary concentrator used at the HFSF (over 3.3 kW across a 1.6/sq cm) exit aperture, corresponding to a flux of about 2 kW/sq cm. This paper discussed the uncertainties of the calorimeter and pyrheliometer measurements and resulting concentration calculations. The measurement uncertainty analysis is performed according to the ASME/ANSI standard PTC 19.1 (1985). Random and bias errors for each portion of the measurement are analyzed. The results show that as either the power or the flux is reduced, the uncertainties increase. Another calorimeter is being designed for a new, refractive secondary which will use a refractive material to produce a higher average flux (5 kW/sq cm) than the reflective secondary. The new calorimeter will use a time derivative of the fluid temperature as a key measurement of the average power out of the secondary. A description of this calorimeter and test procedure is also presented, along with a pre-test estimate of major sources of uncertainty.

Bingham, C. E.

1991-12-01

305

First Year of Running of the LHCb Calorimeter System  

NASA Astrophysics Data System (ADS)

More than one year of data taking for the LHCb detector and its calorimeter system has passed. The detector is brie?y described altogether with the beam conditions that took place during this period. The time adjustment and the energy calibration are explained. The LHCb calorimeter is a key ingredient for particle identi?cation. Electron and photon PID are described here. Finally, some ?rst physics results in radiative decays and ?c measurements are given.

Machefert, Fréedéeric; LHCb experiment

306

Construction of 2D quasi-periodic Rauzy tiling by similarity transformation  

SciTech Connect

A new approach to constructing self-similar fractal tilings is proposed based on the construction of semigroups generated by a finite set of similarity transformations. The Rauzy tiling-a 2D analog of 1D Fibonacci tiling generated by the golden mean-is used as an example to illustrate this approach. It is shown that the Rauzy torus development and the elementary fractal boundary of Rauzy tiling can be constructed in the form of a set of centers of similarity semigroups generated by two and three similarity transformations, respectively. A centrosymmetric tiling, locally dual to the Rauzy tiling, is constructed for the first time and its parameterization is developed.

Zhuravlev, V. G.; Maleev, A. V., E-mail: andr_mal@mail.ru [Vladimir State Humanitarian University (Russian Federation)

2009-05-15

307

Readiness of the ATLAS liquid argon calorimeter for LHC collisions  

NASA Astrophysics Data System (ADS)

The ATLAS liquid argon calorimeter has been operating continuously since August 2006. At this time, only part of the calorimeter was readout, but since the beginning of 2008, all calorimeter cells have been connected to the ATLAS readout system in preparation for LHC collisions. This paper gives an overview of the liquid argon calorimeter performance measured in situ with random triggers, calibration data, cosmic muons, and LHC beam splash events. Results on the detector operation, timing performance, electronics noise, and gain stability are presented. High energy deposits from radiative cosmic muons and beam splash events allow to check the intrinsic constant term of the energy resolution. The uniformity of the electromagnetic barrel calorimeter response along ? (averaged over ?) is measured at the percent level using minimum ionizing cosmic muons. Finally, studies of electromagnetic showers from radiative muons have been used to cross-check the Monte Carlo simulation. The performance results obtained using the ATLAS readout, data acquisition, and reconstruction software indicate that the liquid argon calorimeter is well-prepared for collisions at the dawn of the LHC era.

Aad, G.; Abbott, B.; Abdallah, J.; Abdelalim, A. A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abramowicz, H.; Abreu, H.; Acharya, B. S.; Adams, D. L.; Addy, T. N.; Adelman, J.; Adorisio, C.; Adragna, P.; Adye, T.; Aefsky, S.; Aguilar-Saavedra, J. A.; Aharrouche, M.; Ahlen, S. P.; Ahles, F.; Ahmad, A.; Ahmed, H.; Ahsan, M.; Aielli, G.; Akdogan, T.; Åkesson, T. P. A.; Akimoto, G.; Akimov, A. V.; Aktas, A.; Alam, M. S.; Alam, M. A.; Albert, J.; Albrand, S.; Aleksa, M.; Aleksandrov, I. N.; Alessandria, F.; Alexa, C.; Alexander, G.; Alexandre, G.; Alexopoulos, T.; Alhroob, M.; Aliev, M.; Alimonti, G.; Alison, J.; Aliyev, M.; Allport, P. P.; Allwood-Spiers, S. E.; Almond, J.; Aloisio, A.; Alon, R.; Alonso, A.; Alviggi, M. G.; Amako, K.; Amelung, C.; Ammosov, V. V.; Amorim, A.; Amorós, G.; Amram, N.; Anastopoulos, C.; Andeen, T.; Anders, C. F.; Anderson, K. J.; Andreazza, A.; Andrei, V.; Anduaga, X. S.; Angerami, A.; Anghinolfi, F.; Anjos, N.; Antonaki, A.; Antonelli, M.; Antonelli, S.; Antunovic, B.; Anulli, F.; Aoun, S.; Arabidze, G.; Aracena, I.; Arai, Y.; Arce, A. T. H.; Archambault, J. P.; Arfaoui, S.; Arguin, J.-F.; Argyropoulos, T.; Arik, E.; Arik, M.; Armbruster, A. J.; Arnaez, O.; Arnault, C.; Artamonov, A.; Arutinov, D.; Asai, M.; Asai, S.; Asfandiyarov, R.; Ask, S.; Åsman, B.; Asner, D.; Asquith, L.; Assamagan, K.; Astbury, A.; Astvatsatourov, A.; Atoian, G.; Auerbach, B.; Auge, E.; Augsten, K.; Aurousseau, M.; Austin, N.; Avolio, G.; Avramidou, R.; Axen, D.; Ay, C.; Azuelos, G.; Azuma, Y.; Baak, M. A.; Baccaglioni, G.; Bacci, C.; Bach, A.; Bachacou, H.; Bachas, K.; Backes, M.; Badescu, E.; Bagnaia, P.; Bai, Y.; Bailey, D. C.; Bain, T.; Baines, J. T.; Baker, O. K.; Baker, M. D.; Dos Santos Pedrosa, F. Baltasar; Banas, E.; Banerjee, P.; Banerjee, S.; Banfi, D.; Bangert, A.; Bansal, V.; Baranov, S. P.; Baranov, S.; Barashkou, A.; Barber, T.; Barberio, E. L.; Barberis, D.; Barbero, M.; Bardin, D. Y.; Barillari, T.; Barisonzi, M.; Barklow, T.; Barlow, N.; Barnett, B. M.; Barnett, R. M.; Baron, S.; Baroncelli, A.; Barr, A. J.; Barreiro, F.; Barreiro Guimarães da Costa, J.; Barrillon, P.; Barros, N.; Bartoldus, R.; Bartsch, D.; Bastos, J.; Bates, R. L.; Bathe, S.; Batkova, L.; Batley, J. R.; Battaglia, A.; Battistin, M.; Bauer, F.; Bawa, H. S.; Bazalova, M.; Beare, B.; Beau, T.; Beauchemin, P. H.; Beccherle, R.; Becerici, N.; Bechtle, P.; Beck, G. A.; Beck, H. P.; Beckingham, M.; Becks, K. H.; Bedajanek, I.; Beddall, A. J.; Beddall, A.; Bednár, P.; Bednyakov, V. A.; Bee, C.; Begel, M.; Behar Harpaz, S.; Behera, P. K.; Beimforde, M.; Belanger-Champagne, C.; Bell, P. J.; Bell, W. H.; Bella, G.; Bellagamba, L.; Bellina, F.; Bellomo, M.; Belloni, A.; Belotskiy, K.; Beltramello, O.; Ben Ami, S.; Benary, O.; Benchekroun, D.; Bendel, M.; Benedict, B. H.; Benekos, N.; Benhammou, Y.; Benincasa, G. P.; Benjamin, D. P.; Benoit, M.; Bensinger, J. R.; Benslama, K.; Bentvelsen, S.; Beretta, M.; Berge, D.; Bergeaas Kuutmann, E.; Berger, N.; Berghaus, F.; Berglund, E.; Beringer, J.; Bernardet, K.; Bernat, P.; Bernhard, R.; Bernius, C.; Berry, T.; Bertin, A.; Besson, N.; Bethke, S.; Bianchi, R. M.; Bianco, M.; Biebel, O.; Biesiada, J.; Biglietti, M.; Bilokon, H.; Bindi, M.; Binet, S.; Bingul, A.; Bini, C.; Biscarat, C.; Bitenc, U.; Black, K. M.; Blair, R. E.; Blanchard, J.-B.; Blanchot, G.; Blocker, C.; Blocki, J.; Blondel, A.; Blum, W.; Blumenschein, U.; Bobbink, G. J.; Bocci, A.; Boehler, M.; Boek, J.; Boelaert, N.; Böser, S.; Bogaerts, J. A.; Bogouch, A.; Bohm, C.; Bohm, J.; Boisvert, V.; Bold, T.; Boldea, V.; Boldyrev, A.; Bondarenko, V. G.; Bondioli, M.; Boonekamp, M.; Booth, J. R. A.; Bordoni, S.; Borer, C.; Borisov, A.; Borissov, G.; Borjanovic, I.; Borroni, S.; Bos, K.; Boscherini, D.; Bosman, M.; Bosteels, M.; Boterenbrood, H.; Bouchami, J.; Boudreau, J.; Bouhova-Thacker, E. V.; Boulahouache, C.; Bourdarios, C.; Boyd, J.; Boyko, I. R.; Bozovic-Jelisavcic, I.; Bracinik, J.; Braem, A.; Branchini, P.; Brandenburg, G. W.; Brandt, A.; Brandt, G.; Brandt, O.; Bratzler, U.; Brau, B.; Brau, J. E.; Braun, H. M.; Brelier, B.; Bremer, J.; Brenner, R.; Bressler, S.; Breton, D.; Brett, N. D.; Britton, D.; Brochu, F. M.; Brock, I.; Brock, R.; Brodbeck, T. J.; Brodet, E.; Broggi, F.; Bromberg, C.; Brooijmans, G.; Brooks, W. K.; Brown, G.; Brubaker, E.; Bruckman de Renstrom, P. A.; Bruncko, D.; Bruneliere, R.; Brunet, S.; Bruni, A.; Bruni, G.; Bruschi, M.; Buanes, T.; Bucci, F.; Buchanan, J.; Buchholz, P.; Buckley, A. G.; Budagov, I. A.; Budick, B.; Büscher, V.; Bugge, L.; Bulekov, O.; Bunse, M.; Buran, T.; Burckhart, H.; Burdin, S.; Burgess, T.; Burke, S.; Busato, E.; Bussey, P.; Buszello, C. P.; Butin, F.; Butler, B.; Butler, J. M.; Buttar, C. M.; Butterworth, J. M.; Byatt, T.; Caballero, J.

2010-12-01

308

Measurement of the Hadronic Photon-Structure Function at LEP 1 for $l$Angle$Q^{2}$ $r$Angle Values between 9.9 and 284 $GeV^{2}$  

Microsoft Academic Search

Inclusive gamma^*gamma interactions to hadronic final states where one scattered electron or positron is detected in the electromagnetic calorimeters have been studied in the LEP 1 data taken by ALEPH from 1991 to 1995. The event sample has been used to measure the hadronic structure function of the photon F_2^gamma in three bins with of 9.9, 20.7 and 284

R Barate; D Décamp; P Ghez; C Goy; J P Lees; E Merle; M N Minard; B Pietrzyk; R Alemany; M P Casado; M Chmeissani; J M Crespo; E Fernández; M Fernández-Bosman; L Garrido; E Graugès-Pous; A Juste; M Martínez; G Merino; R Miquel; L M Mir; A Pacheco; I C Park; I Riu; A Colaleo; D Creanza; M De Palma; G Gelao; Giuseppe Iaselli; G Maggi; M Maggi; S Nuzzo; A Ranieri; G Raso; F Ruggieri; G Selvaggi; L Silvestris; P Tempesta; A Tricomi; G Zito; X Huang; J Lin; Q Ouyang; T Wang; Y Xie; R Xu; S Xue; J Zhang; L Zhang; W Zhao; D Abbaneo; U Becker; G Boix; M Cattaneo; F Cerutti; V Ciulli; G Dissertori; H Drevermann; Roger W Forty; M Frank; A W Halley; J B Hansen; J Harvey; P Janot; B Jost; Ivan Lehraus; O Leroy; P Mato; Adolf G Minten; A Moutoussi; F Ranjard; Luigi Rolandi; D Rousseau; W D Schlatter; M Schmitt; O Schneider; P Spagnolo; W Tejessy; F Teubert; I R Tomalin; E Tournefier; Ziad J Ajaltouni; F Badaud; G Chazelle; O Deschamps; A Falvard; C Ferdi; P Gay; C Guicheney; P Henrard; J Jousset; B Michel; S Monteil; J C Montret; D Pallin; P Perret; F Podlyski; J D Hansen; J R Hansen; P H Hansen; B S Nilsson; B Rensch; A Wäänänen; G Daskalakis; A Kyriakis; C Markou; Errietta Simopoulou; I Siotis; Anna Vayaki; A Blondel; G R Bonneaud; J C Brient; A Rougé; M Rumpf; M Swynghedauw; M Verderi; H L Videau; E Focardi; G Parrini; K Zachariadou; R J Cavanaugh; M Corden; C H Georgiopoulos; A Antonelli; G Bencivenni; G Bologna; F Bossi; P Campana; G Capon; V Chiarella; P Laurelli; G Mannocchi; F Murtas; G P Murtas; L Passalacqua; M Pepé-Altarelli; L Curtis; J G Lynch; P Negus; V O'Shea; C Raine; P Teixeira-Dias; A S Thompson; O L Buchmüller; S Dhamotharan; C Geweniger; P Hanke; G Hansper; V Hepp; E E Kluge; A Putzer; J Sommer; K Tittel; S Werner; M Wunsch; R Beuselinck; David M Binnie; W Cameron; Peter J Dornan; M Girone; S M Goodsir; E B Martin; N Marinelli; A Sciabà; J K Sedgbeer; E Thomson; M D Williams; V M Ghete; P Girtler; E Kneringer; D Kuhn; G Rudolph; C K Bowdery; P G Buck; A J Finch; F Foster; G Hughes; R W L Jones; N A Robertson; I Giehl; K Jakobs; K Kleinknecht; G Quast; B Renk; E Rohne; H G Sander; H W Wachsmuth; C Zeitnitz; Jean-Jacques Aubert; C Benchouk; A Bonissent; J Carr; P Coyle; F Etienne; A Ealet; F Motsch; P Payre; M Talby; M Thulasidas; M Aleppo; M Antonelli; F Ragusa; V Büscher; H Dietl; G Ganis; K Hüttmann; G Lütjens; C Mannert; W Männer; H G Moser; S Schael; Ronald Settles; H C J Seywerd; H Stenzel; W Wiedenmann; G Wolf; J Boucrot; O Callot; S Chen; A Cordier; M Davier; L Duflot; J F Grivaz; P Heusse; A Jacholkowska; F R Le Diberder; J Lefrançois; A M Lutz; M H Schune; J J Veillet; I Videau; D Zerwas; P Azzurri; G Bagliesi; S Bettarini; T Boccali; C Bozzi; G Calderini; R Dell'Orso; R Fantechi; I Ferrante; L Foà; A Giassi; A Gregorio; F Ligabue; A Lusiani; P S Marrocchesi; A Messineo; Fabrizio Palla; G Rizzo; G Sanguinetti; G Sguazzoni; Roberto Tenchini; C Vannini; A Venturi; P G Verdini; G A Blair; J T Chambers; G D Cowan; M G Green; T Medcalf; J A Strong; J H Von Wimmersperg-Töller; David R Botterill; R W Clifft; T R Edgecock; P R Norton; J C Thompson; A E Wright; B Bloch-Devaux; P Colas; S Emery; Witold Kozanecki; E Lançon; M C Lemaire; E Locci; P Pérez; J Rander; J F Renardy; A Roussarie; J P Schuller; J Schwindling; A Trabelsi; B Vallage; S N Black; J H Dann; R P Johnson; H Y Kim; N P Konstantinidis; A M Litke; M A McNeil; G Taylor; C N Booth; S L Cartwright; F Combley; M S Kelly; M H Lehto; L F Thompson; K Affholderbach; A Böhrer; S Brandt; J Foss; Claus Grupen; G Prange; L Smolik; F Stephan; G Giannini; B Gobbo; J E Rothberg; S R Wasserbaech; S R Armstrong; E Charles; P Elmer; D P S Ferguson; Y Gao; S González; T C Greening; O J Hayes; H Hu; S Jin; G Mamier; P A McNamara; J M Nachtman; J Nielsen; W Orejudos; Y B Pan; Y Saadi; I J Scott; M Vogt; J Walsh; Wu Sau Lan; X Wu; G Zobernig

1999-01-01

309

Isotensor hadronic parity violation  

NASA Astrophysics Data System (ADS)

Weak interactions between quarks give rise to hadronic parity violation which can be observed in nuclear and few-nucleon systems. We study the QCD renormalization of the isotensor component of parity violation at next-to-leading order accuracy. The renormalization group is employed to evolve the interaction down to hadronic scales. As the results are renormalization-scheme dependent, we compare various schemes, including ’t Hooft-Veltman dimensional regularization and several regularization-independent momentum subtraction schemes.

Tiburzi, B. C.

2012-11-01

310

Simulation studies of hadron energy resolution as a function of iron plate thickness at INO-ICAL  

NASA Astrophysics Data System (ADS)

We report on a detailed simulation study of the hadron energy resolution as a function of the thickness of the absorber plates for the proposed Iron Calorimeter (ICAL) detector at the India-based Neutrino Observatory (INO). We compare the hadron resolutions obtained with absorber thicknesses in the range 1.5–8 cm for neutrino interactions in the energy range 2–15 GeV, which is relevant to hadron production in atmospheric neutrino interactions. We find that at lower energies, the thickness dependence of energy resolution is steeper than at higher energies, however there is a thickness-independent contribution that dominates at the lower thicknesses discussed in this work. As a result, the gain in hadron energy resolution with decreasing plate thickness is marginal. We present the results in the form of fits to a function with energy-dependent exponent.

Lakshmi, S. M.; Ghosh, A.; Devi, M. M.; Kaur, D.; Choubey, S.; Dighe, A.; Indumathi, D.; Murthy, M. V. N.; Naimuddin, Md

2014-09-01

311

Development of a small angle hadron calorimeter prototype for the Collider Detector at Fermilab  

E-print Network

available is 32. 6%. Factors which con- tribute to this low efficiency are the noisy ground and acceptance mismatching. Table 1. Pre-prototype eiff ciency measured using cosmic-ray muons Anode Voltage @VI 2. 0 2. 1 2. 14 2. 2 2. 3 2. 34 2. 5 2. 54... unrmmrma 0 Orerf laws VF- TNE Longitudinal profile A V 2. 5 A 0 E 2 2. 0 N E 5 1. 5 0 0 V \\. 0 A V E R A 0 E &D E N E R 0 2. 0 0 Y S. o A V E R * 0 E S. o N E 0 7 G ~ 2. D V 0. 0 D. o 80. 0 N U M e so. o E 5 0...

Thane, John Mark

2012-06-07

312

Progress on the upgrade of the CMS Hadron Calorimeter Front-End electronics  

SciTech Connect

We present a scheme to upgrade the CMS HCAL front-end electronics in the second long shutdown to upgrade the LHC (LS2), which is expected to occur around 2018. The HCAL electronics upgrade is required to handle the major instantaneous luminosity increase (up to 5 * 10{sup 34} cm{sup -2} s{sup -1}) and an expected integrated luminosity of {approx}3000 fb{sup -1}. A key aspect of the HCAL upgrade is to read out longitudinal segmentation information to improve background rejection, energy resolution, and electron isolation at the L1 trigger. This paper focuses on the requirements for the new electronics and on the proposed solutions. The requirements include increased channel count, additional timing capabilities, and additional redundancy. The electronics are required to operate in a harsh environment and are constrained by the existing infrastructure. The proposed solutions span from chip level to system level. They include the development of a new ASIC ADC, the design and testing of higher speed transmitters to handle the increased data volume, the evaluation and use of circuits from other developments, evaluation of commercial FPGAs, better thermal design, and improvements in the overall readout architecture. We will report on the progress of the designs for these upgraded systems, along with performance requirements and initial design studies.

Anderson, Jake; Whitmore, Juliana; /Fermilab

2011-11-01

313

Progress on the upgrade of the CMS Hadron Calorimeter Front-End electronics  

Microsoft Academic Search

We present a scheme to upgrade the CMS HCAL front-end electronics in the second long shutdown to upgrade the LHC (LS2), which is expected to occur around 2018. The HCAL electronics upgrade is required to handle the major instantaneous luminosity increase (up to 5 * 10³⁴ cm⁻² s⁻¹) and an expected integrated luminosity of â3000 fb⁻¹. A key aspect of

Jake Anderson; Juliana Whitmore

2011-01-01

314

Analysis of Thick Sandwich Shells with Embedded Ceramic Tiles  

NASA Technical Reports Server (NTRS)

The Composite Armored Vehicle (CAV) is an advanced technology demonstrator of an all-composite ground combat vehicle. The CAV upper hull is made of a tough light-weight S2-glass/epoxy laminate with embedded ceramic tiles that serve as armor. The tiles are bonded to a rubber mat with a carefully selected, highly viscoelastic adhesive. The integration of armor and structure offers an efficient combination of ballistic protection and structural performance. The analysis of this anisotropic construction, with its inherent discontinuous and periodic nature, however, poses several challenges. The present paper describes a shell-based 'element-layering' technique that properly accounts for these effects and for the concentrated transverse shear flexibility in the rubber mat. One of the most important advantages of the element-layering technique over advanced higher-order elements is that it is based on conventional elements. This advantage allows the models to be portable to other structural analysis codes, a prerequisite in a program that involves the computational facilities of several manufacturers and government laboratories. The element-layering technique was implemented into an auto-layering program that automatically transforms a conventional shell model into a multi-layered model. The effects of tile layer homogenization, tile placement patterns, and tile gap size on the analysis results are described.

Davila, Carlos G.; Smith, C.; Lumban-Tobing, F.

1996-01-01

315

Characterization of ceramic roof tile wastes as pozzolanic admixture.  

PubMed

The aim of this work is to study the recycling of tile wastes in the manufacture of blended cements. Cracked or broken ceramic bodies are not accepted as commercial products and, therefore, the unsold waste of the ceramic industry becomes an environment problem. The use of powdered roof tile in cement production, as pozzolanic addition, is reported. The wastes were classified as nonglazed, natural and black glazed tiles. The mineralogy of the powders was controlled by SEM-EDX microscopy, XRD analysis and FTIR spectroscopy. Particle size was checked by laser granulometry. Once the materials were fully characterized, pozzolanic lime consumption tests and Fratini tests were carried out. Different formulations of cement-tile blends were prepared by incorporation of up to 30% weight ratios of recycled waste. The compressive strength of the resulting specimens was measured. The evolution of hydration of the cement-tile blends was analyzed by XRD and FTIR techniques. Vibrational spectroscopy presented accurate evidence of pozzolanic activity. The results of the investigation confirmed the potential use of these waste materials to produce pozzolanic cement. PMID:19124234

Lavat, Araceli E; Trezza, Monica A; Poggi, Mónica

2009-05-01

316

Microwave versus conventional sintering of silicon carbide tiles  

SciTech Connect

Silicon carbide is being evaluated as an armor material because of its lightweight, high-hardness, and excellent armor efficiency. However, one of the problems associated with silicon carbide is the high cost associated with achieving fully dense tiles. Full density requires either hot pressing and sintering or reaction bonding. Past efforts have shown that hot pressed tiles have a higher armor efficiency than those produced by reaction bonded sintering. An earlier stuy showed that the acoustic properties of fully-dense silicon carbide tiles were enhanced through the use of post-sintered microwave heat treatments. One of the least expensive forming techniques is to isostatically press-and-sinter. In this study, the authors have used microwave energy to densify silicon carbide green bodies. Microwave sintering has been demonstrated to be a very quick way to sinter ceramics such as alumina to exceptionally high densities. Previous work has shown that microwave post treatment of fully-dense reaction bonded silicon carbide tiles significantly improves the acoustic properties of the tiles. These properties include Poisson`s ratio, Young`s modulus, shear modulus, and bulk modulus.

Kass, M.D.; Caughman, J.B.O.; Forrester, S.C.; Akerman, A.

1997-05-07

317

Hollow clay tile wall program summary report  

SciTech Connect

Many of the Y-12 Plant buildings, constructed during the 1940s and 1950s, consist of steel ed concrete framing infilled with hollow clay tile (HCT). The infill was intended to provide for building enclosure and was not designed to have vertical or lateral load-carrying capacity. During the late 1970s and early 1980s, seismic and wind evaluations were performed on many of these buildings in conjunction with the preparation of a site-wide safety analysis report. This analytical work, based on the best available methodology, considered lateral load-carrying capacity of the HCT infill on the basis of building code allowable shear values. In parallel with the analysis effort, DOE initiated a program to develop natural phenomena capacity and performance criteria for existing buildings, but these criteria did not specify guidelines for determining the lateral force capacity of frames infilled with HCT. The evaluation of infills was, therefore, based on the provisions for the design of unreinforced masonry as outlined in standard masonry codes. When the results of the seismic and wind evaluations were compared with the new criteria, the projected building capacities fell short of the requirements. Apparently, if the buildings were to meet the new criteria, many millions of dollars would be required for building upgrades. Because the upgrade costs were significant, the assumptions and approaches used in the analyses were reevaluated. Four issues were identified: (1) Once the infilled walls cracked, what capacity (nonlinear response), if any, would the walls have to resist earthquake or wind loads applied in the plane of the infill (in-plane)? (2) Would the infilled walls remain within the steel or reinforced concrete framing when subjected to earthquake or high wind loads applied perpendicular to the infill (out-of-plane)? (3) What was the actual shear capacity of the HCT infill? (4) Was modeling the HCT infill as a shear wall the best approach?

Henderson, R.C.; Jones, W.D. [Gilbert/Commonwealth, Inc., Oak Ridge, TN (United States); Beavers, J.E. [MS Technology, Inc. (United States)

1995-07-30

318

School of Art & Design 3D Printing of Relief Forms onto Ceramic Tiles  

E-print Network

School of Art & Design 3D Printing of Relief Forms onto Ceramic Tiles Lead: Lharne Shaw 3D printing tile production. It will also assess the feasibility of introducing a 3D slip printing system into both

Evans, Paul

319

Charmed Hadrons from Strangeness-rich QGP  

E-print Network

The yields of charmed hadrons emitted by strangeness rich QGP are evaluated within chemical non-equilibrium statistical hadronization model, conserving strangeness, charm, and entropy yields at hadronization.

Inga Kuznetsova; Johann Rafelski

2006-05-28

320

Scintillating LXe/LKr electromagnetic calorimeter  

SciTech Connect

A scintillating LXe/LKr electromagnetic calorimeter has been built at the ITEP and tested at the BATES (MIT) accelerator. The detector consists of a PMT matrix and 45 light collecting cells made of aluminized Mylar partially covered with p-terphenyl as a wavelength-shifter (WLS). Each pyramidal cell has (2.1 x 2.1) x 40 x (4.15 x 4.15) cm dimensions and is viewed by an FEU-85 glass-window photomultiplier. The detector has been exposed to the 106--348 MeV electron beam. The energy resolution is {sigma}{sub E}/E {approx_equal} 5%/{radical}E at 100--350 MeV range in LXe; the coordinate resolution is {sigma}{sub X} {approx_equal} 0.7 cm; the time resolution is {sigma}{sub {tau}} {approx_equal} 0.6 ns for a single cell. Possible ways to improve energy resolution are discussed.

Akimov, D.Yu.; Bolozdynya, A.J.; Churakov, D.L. [ITEP, Moscow (Russian Federation)] [and others] [ITEP, Moscow (Russian Federation); and others

1995-12-01

321

Source calibrations and SDC calorimeter requirements  

SciTech Connect

Several studies of the problem of calibration of the SDC calorimeter exist. In this note the attempt is made to give a connected account of the requirements on the source calibration from the point of view of the desired, and acceptable, constant term induced in the EM resolution. It is assumed that a ``local`` calibration resulting from exposing each tower to a beam of electrons is not feasible. It is further assumed that an ``in situ`` calibration is either not yet performed, or is unavailable due to tracking alignment problems or high luminosity operation rendering tracking inoperative. Therefore, the assumptions used are rather conservative. In this scenario, each scintillator plate of each tower is exposed to a moving radioactive source. That reading is used to ``mask`` an optical ``cookie`` in a grey code chosen so as to make the response uniform. The source is assumed to be the sole calibration of the tower. Therefore, the phrase ``global`` calibration of towers by movable radioactive sources is adopted.

Green, D.

1992-10-01

322

Source calibrations and SDC calorimeter requirements  

SciTech Connect

Several studies of the problem of calibration of the SDC calorimeter exist. In this note the attempt is made to give a connected account of the requirements on the source calibration from the point of view of the desired, and acceptable, constant term induced in the EM resolution. It is assumed that a local'' calibration resulting from exposing each tower to a beam of electrons is not feasible. It is further assumed that an in situ'' calibration is either not yet performed, or is unavailable due to tracking alignment problems or high luminosity operation rendering tracking inoperative. Therefore, the assumptions used are rather conservative. In this scenario, each scintillator plate of each tower is exposed to a moving radioactive source. That reading is used to mask'' an optical cookie'' in a grey code chosen so as to make the response uniform. The source is assumed to be the sole calibration of the tower. Therefore, the phrase global'' calibration of towers by movable radioactive sources is adopted.

Green, D.

1992-10-01

323

Solare Cell Roof Tile And Method Of Forming Same  

DOEpatents

A solar cell roof tile includes a front support layer, a transparent encapsulant layer, a plurality of interconnected solar cells and a backskin layer. The front support layer is formed of light transmitting material and has first and second surfaces. The transparent encapsulant layer is disposed adjacent the second surface of the front support layer. The interconnected solar cells has a first surface disposed adjacent the transparent encapsulant layer. The backskin layer has a first surface disposed adjacent a second surface of the interconnected solar cells, wherein a portion of the backskin layer wraps around and contacts the first surface of the front support layer to form the border region. A portion of the border region has an extended width. The solar cell roof tile may have stand-offs disposed on the extended width border region for providing vertical spacing with respect to an adjacent solar cell roof tile.

Hanoka, Jack I. (Brookline, MA); Real, Markus (Oberberg, CH)

1999-11-16

324

Flutter Analysis of the Shuttle Tile Overlay Repair Concept  

NASA Technical Reports Server (NTRS)

The Space Shuttle tile overlay repair concept, developed at the NASA Johnson Space Center, is designed for on-orbit installation over an area of damaged tile to permit safe re-entry. The thin flexible plate is placed over the damaged area and secured to tile at discreet points around its perimeter. A series of flutter analyses were performed to determine if the onset of flutter met the required safety margins. Normal vibration modes of the panel, obtained from a simplified structural analysis of the installed concept, were combined with a series of aerodynamic analyses of increasing levels of fidelity in terms of modeling the flow physics to determine the onset of flutter. Results from these analyses indicate that it is unlikely that the overlay installed at body point 1800 will flutter during re-entry.

Bey, Kim S.; Scott, Robert C.; Bartels, Robert E.; Waters, William A.; Chen, Roger

2007-01-01

325

Mobilization and loss of elements from roofing tiles  

NASA Astrophysics Data System (ADS)

Deposition, leaching and chemical transformation are processes that affect roofing tile and roof runoff water. Leaching experiments, with artificial rainwater in the laboratory, showed the presence of Na+, K+, Mg2+, Ca2+, Cl-, NO3 -, SO4 2-, with a ratio of Ca2+ and SO4 2- suggesting gypsum dissolution. X-ray fluorescence (XRF) of the exposed roof tile showed depletion such as Mg, Al, Si, P, Ti and K at the surface of the tile and an enrichment of Fe and Mn which hinted at a process akin to laterite formation. However, calcium appeared to be enriched at the surface as gypsum (confirmed by X-ray diffraction) and to a lesser extent calcite, which is characteristic of deposits on building surfaces in cities.

Sulaiman, Fazrul Razman; Brimblecombe, Peter; Grossi, Carlota M.

2009-08-01

326

Interlaced particle systems and tilings of the Aztec diamond  

E-print Network

Motivated by the problem of domino tilings of the Aztec diamond, a weighted particle system is defined on $N$ lines, with line $j$ containing $j$ particles. The particles are restricted to lattice points from 0 to $N$, and particles on successive lines are subject to an interlacing constraint. It is shown that marginal distributions for this particle system can be computed exactly. This in turn is used to give unified derivations of a number of fundamental properties of the tiling problem, for example the evaluation of the number of distinct configurations and the relation to the GUE minor process. An interlaced particle system associated with the domino tiling of a certain half Aztec diamond is similarly defined and analyzed.

Benjamin J. Fleming; Peter J. Forrester

2010-04-03

327

Self-Ane Tiling Via Substitution Dynamical Systems and Rauzy Fractals  

E-print Network

Self-AÃ?ne Tiling Via Substitution Dynamical Systems and Rauzy Fractals V#19;#16;ctor F. Sirvent #3 dynamical systems, give rise to self-aÃ?ne multi-tiles and self-aÃ?ne tilings. This provides an eÃ?cient and unconventional way for constructing aperiodic self-aÃ?ne tilings. Our result also leads to a proof that a Rauzy

Sirvent, Víctor F.

328

Evidence for jets from a transverse-energy-triggered calorimeter experiment at Fermilab  

SciTech Connect

We have recently completed the first part of running for experiment E-609 at Fermilab. The E-609 hadron jet experiment uses a 132-segment 8-steradian full azimuth calorimeter with tower structure. Additional parts of the apparatus are described in the paper. A novel triggering system allowed us to take data with many different kinds of triggers simultaneously. We give a preliminary report on data obtained in 400 GeV pp collisions, concentrating on data from two triggers, both of which have no special geometrical requirement for the form of the transverse energy deposition. One of these was a global total E-transverse trigger; the other was a 2-high trigger, which required that 2 or more calorimeter segments (any 2) each give a signal larger than about 1.0 GeV/c. This report further concentrates on the data sample with total transverse energy above 11 GeV. We will present results concerning planarity distributions as well as theta-phi energy flow, for these events. For the globally triggered events in this kinematic region, only a few percent show clear di-jet structure, with clustering, co-planarity, and concentration of high-p/sub T/ fragments near the jet axes. For the 2-high events however, at this E-transverse, approximately 30 percent of the events show di-jet structure. The 2-high events constitute only about 15 percent of the global events, but contain virtually all the events which show this clear di-jet structure. Details of the analysis are presented, including studies of whether the features of the di-jet events can be explained by simple random fluctuations.

Arenton, M.; Ditzler, R.; Fields, T.

1982-07-01

329

ATLAS Liquid Argon Endcap Calorimeter R&D for sLHC  

NASA Astrophysics Data System (ADS)

The performance of the ATLAS liquid argon endcap has been studied for luminosities as expected for the operation at sLHC. The increase of integrated luminosity by a factor of ten has serious consequences for the signal reconstruction, radiation hardness requirements and operations of the forward liquid argon calorimeters. The response has been studied with small modules of the type as built for ATLAS in a very high intensity beam at IHEP/Protvino. The highest intensity obtained was well above the level of energy impact expected for ATLAS at sLHC. The signal processing of the ATLAS Hadronic Endcap Calorimeter employs the concept of 'active pads' which keep the detector capacities at the input of the amplifiers small and thereby achieves a fast rise time of the signal. This concept is realized using highly integrated amplifier and summing chips in GaAs technology. With an increase of luminosity by a factor of ten the safety factor for the radiation hardness is essentially eliminated. Therefore new, more radiation hard technologies have been studied: SiGe bipolar, Si CMOS FET and GaAs FET transistors have been irradiated with neutrons up to an integrated fluence of 2.2 × 1016n/cm2. All technologies exceed the limit required for the radiation hardness for the operation at sLHC of 2 × 1015n/cm2. The temperature dependence of the gain has been studied as well. Here the bipolar technologies - in contrast to CMOS - need an adjustment of the operation point when going from room temperature to liquid nitrogen temperature.

Schacht, P.

2010-04-01

330

Flexible and efficient genome tiling design with penalized uniqueness score  

PubMed Central

Background As a powerful tool in whole genome analysis, tiling array has been widely used in the answering of many genomic questions. Now it could also serve as a capture device for the library preparation in the popular high throughput sequencing experiments. Thus, a flexible and efficient tiling array design approach is still needed and could assist in various types and scales of transcriptomic experiment. Results In this paper, we address issues and challenges in designing probes suitable for tiling array applications and targeted sequencing. In particular, we define the penalized uniqueness score, which serves as a controlling criterion to eliminate potential cross-hybridization, and a flexible tiling array design pipeline. Unlike BLAST or simple suffix array based methods, computing and using our uniqueness measurement can be more efficient for large scale design and require less memory. The parameters provided could assist in various types of genomic tiling task. In addition, using both commercial array data and experiment data we show, unlike previously claimed, that palindromic sequence exhibiting relatively lower uniqueness. Conclusions Our proposed penalized uniqueness score could serve as a better indicator for cross hybridization with higher sensitivity and specificity, giving more control of expected array quality. The flexible tiling design algorithm incorporating the penalized uniqueness score was shown to give higher coverage and resolution. The package to calculate the penalized uniqueness score and the described probe selection algorithm are implemented as a Perl program, which is freely available at http://www1.fbn-dummerstorf.de/en/forschung/fbs/fb3/paper/2012-yang-1/OTAD.v1.1.tar.gz. PMID:23216884

2012-01-01

331

PHASE CHANGE MATERIALS IN FLOOR TILES FOR THERMAL ENERGY STORAGE  

SciTech Connect

Passive solar systems integrated into residential structures significantly reduce heating energy consumption. Taking advantage of latent heat storage has further increased energy savings. This is accomplished by the incorporation of phase change materials into building materials used in passive applications. Trombe walls, ceilings and floors can all be enhanced with phase change materials. Increasing the thermal storage of floor tile by the addition of encapsulated paraffin wax is the proposed topic of research. Latent heat storage of a phase change material (PCM) is obtained during a change in phase. Typical materials use the latent heat released when the material changes from a liquid to a solid. Paraffin wax and salt hydrates are examples of such materials. Other PCMs that have been recently investigated undergo a phase transition from one solid form to another. During this process they will release heat. These are known as solid-state phase change materials. All have large latent heats, which makes them ideal for passive solar applications. Easy incorporation into various building materials is must for these materials. This proposal will address the advantages and disadvantages of using these materials in floor tile. Prototype tile will be made from a mixture of quartz, binder and phase change material. The thermal and structural properties of the prototype tiles will be tested fully. It is expected that with the addition of the phase change material the structural properties will be compromised to some extent. The ratio of phase change material in the tile will have to be varied to determine the best mixture to provide significant thermal storage, while maintaining structural properties that meet the industry standards for floor tile.

Douglas C. Hittle

2002-10-01

332

SDC hadronic mass resolutions in Z and Z{prime} decays  

SciTech Connect

In order to investigate the performance as a function of calorimeter characteristics, events were simulated in the SDC detector for Z and Z{prime} (m{sub Z}{prime} = 1TeV) production at two different P{sub T} values (50GeV/c and 500GeV/C). This initial study concentrated on the effects of clustering (including jet fragmentation fluctuations and contributions from underlying events), segmentation and calorimeter energy resolution. These studies were intended to explore the capabilities of the SDC detector for reconstruction of hadronic decays of massive particles (Z mass or greater). We find that detector-independent contributions dominate the mass resolution for the range of parameters being considered by SDC.

Blair, R.E.; Price, L.E.; Trost, H.J.

1990-12-01

333

THE ISOPERIMETRIC PROBLEM FOR PINWHEEL TILINGS Charles Radin 1 and Lorenzo Sadun 2  

E-print Network

THE ISOPERIMETRIC PROBLEM FOR PINWHEEL TILINGS by Charles Radin 1 and Lorenzo Sadun 2 Mathematics In aperiodic ``pinwheel'' tilings of the plane there exist unions of tiles with ratio (area)/(perimeter) 2 and any sufficiently large radius. The existence of such circles follows from the metric on pinwheel space

334

Supplementary Information for: Integrating DNA Strand Displacement Circuitry with DNA Tile Self-assembly  

E-print Network

Supplementary Information for: Integrating DNA Strand Displacement Circuitry with DNA Tile Self-assembly of Contents: · Supplementary Figures 1. Native polyacrylamide gel electrophoresis of DNA tile self-assembly 2. UV absorbance annealing and melting curves of DNA tile self-assembly 3. Characterization

Zhang, David Yu

335

ITER-like wall sliced beryllium tiles The JET Enhanced Performance 2 (EP2) shutdown  

E-print Network

of the vessel and the installation of ~2700 new individual assemblies. The tile designs are very sensitive; almost any type of damage would seriously affect the machine's operational performance during start. The design constraints of the new limiter tile assemblies meant that the tile fixing bolt access hole could

336

Process of pyroplastic shaping for special-purpose porcelain stoneware tiles  

Microsoft Academic Search

A novel technique to manufacture special-purpose tiles (i.e. trim pieces, steps, skirting boards, etc.) has been recently developed on the basis of a pyroplastic shaping of porcelain stoneware tiles. This innovative process involves a second firing, peaking at temperatures close to those of sintering, whose effect was investigated by comparing industrially manufactured tiles before and after pyroplastic shaping. Characterization by

Mariarosa Raimondo; Chiara Zanelli; Guia Guarini; Michele Dondi; Roberto Fabbroni; Tiziano Cortesi

2009-01-01

337

Steep-Slope Assembly Testing of Clay and Concrete Tile With and Without Cool Pigmented Colors  

SciTech Connect

Cool color pigments and sub-tile venting of clay and concrete tile roofs significantly impact the heat flow crossing the roof deck of a steep-slope roof. Field measures for the tile roofs revealed a 70% drop in the peak heat flow crossing the deck as compared to a direct-nailed asphalt shingle roof. The Tile Roofing Institute (TRI) and its affiliate members are keenly interested in documenting the magnitude of the drop for obtaining solar reflectance credits with state and federal "cool roof" building efficiency standards. Tile roofs are direct-nailed or are attached to a deck with batten or batten and counter-batten construction. S-Misson clay and concrete tile roofs, a medium-profile concrete tile roof, and a flat slate tile roof were installed on fully nstrumented attic test assemblies. Temperature measures of the roof, deck, attic, and ceiling, heat flows, solar reflectance, thermal emittance, and the ambient weather were recorded for each of the tile roofs and also on an adjacent attic cavity covered with a conventional pigmented and directnailed asphalt shingle roof. ORNL measured the tile's underside temperature and the bulk air temperature and heat flows just underneath the tile for batten and counter-batten tile systems and compared the results to the conventional asphalt shingle.

Miller, William A [ORNL

2005-11-01

338

Tilescope: online analysis pipeline for high-density tiling microarray data Zhengdong D. Zhang1  

E-print Network

1 Tilescope: online analysis pipeline for high-density tiling microarray data Zhengdong D. Zhang1 pipeline Key words: high-density tiling microarray, high-density oligonucleotide microarray, microarray processing pipeline for analyzing tiling array data (http://tilescope.gersteinlab.org). In a completely

Gerstein, Mark

339

High-Performance Tiled WMS and KML Web Server  

NASA Technical Reports Server (NTRS)

This software is an Apache 2.0 module implementing a high-performance map server to support interactive map viewers and virtual planet client software. It can be used in applications that require access to very-high-resolution geolocated images, such as GIS, virtual planet applications, and flight simulators. It serves Web Map Service (WMS) requests that comply with a given request grid from an existing tile dataset. It also generates the KML super-overlay configuration files required to access the WMS image tiles.

Plesea, Lucian

2007-01-01

340

Fluctuations in Hadronizing QGP  

E-print Network

The dynamical development of the cooling and hadronizing quark-gluon Plasma (QGP) is studied in a simple model assuming critical fluctuations in the QGP to Hadronic Matter (HM) and a first order transition in a small finite system. We consider an earlier determined free-energy density curve in the neighbourhood of the critical point, with two local minima corresponding to the equilibrium hadronic and QGP configurations. In this approach the divergence at e = 0 eliminates fluctuations with negative or zero energy. The barrier between the equilibrium states is obtained from an estimated value of the surface tension between the two phases. We obtain a characteristic behavior for the skewness and the kurtosis of energy density fluctuations, which can be studied via a beam energy scan program.

Laszlo P. Csernai; Gabriela Mocanu; Zoltan Neda

2012-04-28

341

Foam on Tile Impact Modeling for the Space Shuttle Program  

NASA Technical Reports Server (NTRS)

Following the breakup of the Space Shuttle Columbia during reentry a NASA-wide investigation team was formed to examine the probable damage inflicted on Orbiter Thermal Protection System (TPS) elements by impact of External Tank insulating foam projectiles. Our team was to apply rigorous, physics-based analysis techniques to help determine parameters of interest for an experimental test program, utilize validated codes to investigate the full range of impact scenarios, and use analysis derived models to predict aero-thermal-structural responses to entry conditions. We were to operate on a non-interference basis with the j Team, and were to supply significant findings to that team and to the Orbiter Vehicle Engineering Working Group, being responsive to any solicitations for support from these entities. The authors formed a working sub-group within the larger team to apply the Smooth Particle Hydrodynamics code SPHC to the damage estimation problem. Numerical models of the LI-900 TPS tiles and of the BX-250 foam were constructed and used as inputs into the code. Material properties needed to properly model the tiles and foam were obtained from other working sub-groups who performed tests on these items for this purpose. Two- and three- dimensional models of the tiles were constructed, including the glass outer layer, the densified lower layer of LI-900 insulation, the Nomex felt Strain Isolation Pad (SIP) mounting layer, and the underlying aluminum 2024 vehicle skin. A model for the BX-250 foam including porous compression, elastic rebound, and surface erosion was developed. Code results for the tile damage and foam behavior were extensively validated through comparison with the Southwest Research Institute (SwRI) foam-on-tile impact experiments carried out in 1999. These tests involved small projectiles striking individual tiles and small tile arrays. Following code and model validation we simulated impacts of larger ET foam projectiles on the TPS tile systems used on the wings of the orbiter. Tiles used on the Wing Acreage, the Main Landing Gear Door, and the Carrier Panels near the front edge of the wing were modeled. Foam impacts shot for the CAB investigation were modeled, as well as impacts at larger angles, including rapid rotation of the projectile, and with varying foam properties. General results suggest that foam impacts on tiles at about 500 mph could cause appreciable damage if the impact angle is greater than about 20 degrees. Some variations of the foam properties, such as increased brittleness or increased density could increase damage in some cases. Rapid (17 rps) rotation failed to increase the damage for the two cases considered. This does not rule out other cases in which the rotational energy might lead to an increase in tile damage, but suggests that in most cases rotation will not be an important factor. Similar models will be applied for other impacting materials, other velocities, and other geometries as part of the Return to Flight process.

Stellingwerf, R. F.; Robinson, J. H.; Richardson, S.; Evans, S. W.; Stallworth, R.; Hovater, M.

2003-01-01

342

High-energy hadron-hadron collisions. Annual progress report  

SciTech Connect

Work on high energy hadron-hadron collisions in the geometrical model is summarized. Specific items that were studied include the existence and movement of dips in elastic p anti p collisions, the angular distributions for elastic scattering and diffraction dissociation of hadrons on nuclei, and a model calculation of scattering parameters in high energy two-body collisions.

Chou, T.T.

1981-02-01

343

Hadronic scattering of charmed mesons  

E-print Network

The scattering cross sections of charm mesons with hadrons such as the pion, rho meson, and nucleon are studied in an effective Lagrangian. In heavy ion collisions, rescattering of produced charm mesons by hadrons affects the invariant mass spectra...

Lin, ZW; Ko, Che Ming; Zhang, B.

2000-01-01

344

Double Spin Asymmetries, ALL, for Di-hadrons in PHENIX  

NASA Astrophysics Data System (ADS)

The Relativistic Heavy Ion Collider (RHIC), through its polarized proton-proton collisions, provides leading order access to ?G, the gluon contribution to the proton spin. Previous measurements have shown ?G(x) dx to be consistent with zero in the Bjorken-x range of 0.05 to 0.2, whereas there is presently no measurement constraining ?G (x) for x below or above this range. The Muon Piston Calorimeter provides the opportunity to expand the constrained range by allowing measurements of double spin asymmetries for azimuthally-separated pairs of 0?'s at forward rapidity, 3.1<=|?|<=3.9, for ?s=200 GeV and 500 GeV data taken in 2009. We present PYTHIA simulations studying the kinematics and possible asymmetries from di-hadron production at RHIC.

McKinney, Cameron

2010-11-01

345

Testbench of shaper-digitizer modules for Belle II calorimeter  

NASA Astrophysics Data System (ADS)

The design and construction work of the Belle II detector subsystems, including its electromagnetic calorimeter, is ongoing. The modification of the calorimeter includes the development of new electronics based on specially developed shaper-digitizer-signal-processing (Shaper DSP) modules. A shaper DSP module performs signal shaping, digitization, waveform analysis and provides a fast sum signal for trigger. The calorimeter includes 576 Shaper DSP modules. Recently mass-production stage started and the complete performance test for all modules is now necessary. To test a workability of modules and measure their parameters, a specialized testbench has been developed. The testbench allows one to study the signal shape, fast output, deviations from linearity, noise level and DSP logic. All test results are recorded in the database and some of them have graphical representation.

Vorobyev, V.; Kuzmin, A.; Matvienko, D.; Vinokurova, A.

2014-08-01

346

Strangeness in QGP: Hadronization Pressure  

E-print Network

We review strangeness as signature of quark gluon plasma (QGP) and the hadronization process of a QGP fireball formed in relativistic heavy-ion collisions in the entire range of today accessible reaction energies. We discuss energy dependence of the statistical hadronization parameters within the context of fast QGP hadronization. We find that QGP breakup occurs for all energies at the universal hadronization pressure $P = 80\\pm 3\\,\\mathrm{MeV/fm}^3 $.

Jan Rafelski; Michal Petran

2014-03-17

347

Strangeness in QGP: Hadronization Pressure  

E-print Network

We review strangeness as signature of quark gluon plasma (QGP) and the hadronization process of a QGP fireball formed in relativistic heavy-ion collisions in the entire range of today accessible reaction energies. We discuss energy dependence of the statistical hadronization parameters within the context of fast QGP hadronization. We find that QGP breakup occurs for all energies at the universal hadronization pressure $P = 80\\pm 3\\,\\mathrm{MeV/fm}^3 $.

Rafelski, Jan

2014-01-01

348

First level trigger of the backing calorimeter for the ZEUS experiment  

Microsoft Academic Search

First Level Trigger (FLT) of the Backing Calorimeter (BAC) for the ZEUS experiment is presented. The Backing Calorimeter was designed to measure the energy of particles which are not absorbed in Central Uranium Calorimeter and to identify muons. Its trigger system calculates the total energy (E), transverse energy (Et), two highest energy deposits measured in the detector (E1,E2) and provides

Krzysztof T. Pozniak; Pawel Plucinski; Grzegorz Grzelak; Krzysztof Kierzkowski; Maciej I. Kudla

2004-01-01

349

REVIEW ARTICLE: Hadron collider experiments  

Microsoft Academic Search

Hadrons are elementary particles which interact through the strong interaction. Hadron colliders are accelerators in which beams of such particles are made to collide. Such collisions give information on the structure of the constituents of the hadrons and also produce new unstable forms of matter which can be studied. At low values of the four-momentum transfer squared, Q2, the interaction

J. Garvey

1987-01-01

350

Ecoefficiency of fabric filters in the Italian ceramic tile industry  

Microsoft Academic Search

Italy is an important producer of ceramic tiles, with a high production share in Europe (50%) and worldwide (16%). Since early 1990s, fabric filters have been installed to reduce emissions of dust, lead, fluorine, etc. from firing kilns. Such end-of-pipe technologies can increase energy consumption and production costs. This paper presents a simplified LCA to assess the overall environmental effects

Leo Breedveld; Giorgio Timellini; Giorgio Casoni; Alberto Fregni; Graziano Busani

2007-01-01

351

Phosphorus lateral movement through subsoil to subsurface tile drains  

Technology Transfer Automated Retrieval System (TEKTRAN)

Vertical subsurface P transport to tile drains is well documented, however little research has focused on lateral P transport. A replicated field study investigated the lateral movement of P through 3.0 m of typical Iowa subsoil (sandy loam texture, pH 7.7, 2 mg kg-1 Olsen P) between a 1.2-m deep tr...

352

Spread spectrum interference suppression using adaptive time-frequency tilings  

Microsoft Academic Search

Interference suppression in spread spectrum communication systems is often essential for achieving maximum system performance. Existing interference suppression methods do not perform well for most types of nonstationary interference. We first consider interference suppression schemes based on adaptive orthogonal time-frequency decompositions, such as wavelet packet and arbitrary dyadic time-frequency tilings. These methods often reduce interference substantially, but their performance can

Brian S. Krongold; Michael L. Kramer; Kannan Ramchandran; Douglas L. Jones

1997-01-01

353

Development of lightweight porcelain stoneware tiles using foaming agents  

Microsoft Academic Search

Recent market trends for porcelain stoneware tiles indicate that there is a growing interest for lightweight products, to be used vertically, in internal walls or ventilated facades. The decorative and structural functions have now been coupled with additional features, such as thermal insulation. The optimization of all functionalities depends on a careful control of porosity, in terms of overall amount,

J. García-Ten; A. Saburit; E. Bernardo; P. Colombo

354

Interior of shower stall on west side showing tile and ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Interior of shower stall on west side showing tile and three shower heads, view facing south-southeast - U.S. Naval Base, Pearl Harbor, Dry Dock No. 1, Latrine, Sixth Street, adjacent to Dry Dock No. 1, Pearl City, Honolulu County, HI

355

EVALUATION OF FUNGAL GROWTH (PENICILLIUM GLABRUM) ON A CEILING TILE  

EPA Science Inventory

The paper gives results of a study employing static chambers to study the impact of different equilibrium relative humidities (RHs) and moisture conditions on the ability of a new ceiling tile to support fungal growth. Amplification of the mold, Penicillium glabrum, occurred at R...

356

EVALUATION OF FUNGAL GROWTH (PENICILLIUM GLABRUM) ON A CEILING TILE  

EPA Science Inventory

The paper gives results of a study employing static chambers to study the impact of different equilibrium relative humidities (RHs) and moisture conditions on the ability of a new ceiling tile to support fungal growth. mplification of the mold, Penicillium glabrum, occurred at RH...

357

In-Field Bioreactor for Removing Nitrate from Tile Drainage  

Technology Transfer Automated Retrieval System (TEKTRAN)

Nitrate in water leaving subsurface drain ('tile') systems often exceeds the 10 mg-N L-1 maximum contaminant level (MCL) set by the U.S. EPA for drinking water and has been implicated in contributing to the hypoxia problem within the Gulf of Mexico. Much of the NO3 from agricultural lands impacting ...

358

The development of a general purpose ARM-based processing unit for the ATLAS TileCal sROD  

NASA Astrophysics Data System (ADS)

After Phase-II upgrades in 2022, the data output from the LHC ATLAS Tile Calorimeter will increase significantly. ARM processors are common in mobile devices due to their low cost, low energy consumption and high performance. It is proposed that a cost-effective, high data throughput Processing Unit (PU) can be developed by using several consumer ARM processors in a cluster configuration to allow aggregated processing performance and data throughput while maintaining minimal software design difficulty for the end-user. This PU could be used for a variety of high-level functions on the high-throughput raw data such as spectral analysis and histograms to detect possible issues in the detector at a low level. High-throughput I/O interfaces are not typical in consumer ARM System on Chips but high data throughput capabilities are feasible via the novel use of PCI-Express as the I/O interface to the ARM processors. An overview of the PU is given and the results for performance and throughput testing of four different ARM Cortex System on Chips are presented.

Cox, M. A.; Reed, R.; Mellado, B.

2015-01-01

359

Search for new physics in the Compact Muon Solenoid (CMS) experiment and the response of the CMS calorimeters to particles and jets  

SciTech Connect

A Monte Carlo study of a generic search for new resonances beyond the Standard Model (SM) in the CMS experiment is presented. The resonances are axigluon, coloron, E{sub 6} diquark, excited quark, W{prime}, Z{prime}, and the Randall-Sundrum graviton which decay to dijets. The dijet resonance cross section that the CMS can expect to discover at a 5{sigma} significance or to exclude at 95% confidence level for integrated luminosities of 100 pb{sup -1}, 1 fb{sup -1}, and 10 fb{sup -1} is evaluated. It is shown that a 5{sigma} discovery of a multi-TeV dijet resonance is possible for an axigluon, excited quark, and E{sub 6} diquark. However, a 5{sigma} discovery can not be projected with confidence for a W{prime}, Z{prime} and the Randall-Sundrum graviton. On the other hand, 95% CL exclusion mass regions can be measured for all resonances at high luminosities. In the second part of this dissertation, the analyses of the 2006 test beam data from the combined electromagnetic and hadronic barrel calorimeters are presented. The CMS barrel calorimeters response to a variety of beam particles in a wide momenta range (1 to 350 GeV/c) is measured. Furthermore, using these beam data, the expected performance of the barrel calorimeters to jets is predicted.

Gumus, Kazim Ziya; /Texas Tech.

2008-08-01

360

A cathode readout gas sampling calorimeter with conductive plastic tubes  

NASA Astrophysics Data System (ADS)

We constructed and tested a prototype gas sampling electromagnetic calorimeter of the Pb-proportional tube sandwich type. The calorimeter uses conductive plastic tubes and cathode pad readout with a tower structure which resulted in reasonable energy and spatial resolutions for electrons in the momentum range 0.5-4.0 GeV/c; {? E}/{E = {21%}/{(E( GeV) }) {1}/{2}, ? x = 6 mm} (at 3 GeV /c). This paper describes the test and the performance studied under various conditions.

Fujii, K.; Fujimoto, J.; Hayashii, H.; Kajikawa, R.; Masatani, Y.; Ozaki, H.; Sugiyama, A.; Suzaki, R.; Suzuki, S.; Tsukamoto, T. Y.; Tsukamoto, T. F.; Uno, S.; Iwata, S.

1985-05-01

361

The Electromagnetic Calorimeter of the future PANDA Detector  

SciTech Connect

Experiments with a cooled antiproton beam at the future accelerator facility FAIR at GSI, Darmstadt, will be performed with the 4{pi} detector PANDA comprising a high resolution, compact and fast homogeneous electromagnetic calorimeter to detect photons between 10MeV and 10GeV energy inside a superconducting solenoid (2T). The target calorimeter comprises more than 20,000 PbWO4 crystals of significantly enhanced quality read-out with large area avalanche photodiodes at an operating temperature of -25 degree sign C. The paper describes the quality of PWO-II and illustrates the future performance based on response measurements with high-energy photons.

Novotny, Rainer [2nd Physics Institute, Justus-Liebig-University Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen (Germany)

2006-10-27

362

Precision two-compartment bomb calorimeter for combustion in fluorine  

NASA Astrophysics Data System (ADS)

An isothermally jacketed liquid calorimeter permitting thermochemical studies on spontaneous combustion in fluorine has been built and tested. The fluorine storage tank was located outside the calorimeter vessel, thus lowering the heat capacity of the system and its thermal inertia. Particular attention was paid to the method and rate of liquid circulation since it largely determines the experimental accuracy. The system can be calibrated electrically. The possible experimental errors are discussed, and their analysis shows that calibration is feasible with an accuracy of ?99.98%. A series of measurements involving a temperature rise of about 0.9 K showed a standard deviation of 0.02%.

Lenski, H.; Böhler, D.

1980-02-01

363

Primordial beryllium as a big bang calorimeter.  

PubMed

Many models of new physics including variants of supersymmetry predict metastable long-lived particles that can decay during or after primordial nucleosynthesis, releasing significant amounts of nonthermal energy. The hadronic energy injection in these decays leads to the formation of ?Be via the chain of nonequilibrium transformations: Energy(h)?T, ³He??He, ?Li??Be. We calculate the efficiency of this transformation and show that if the injection happens at cosmic times of a few hours the release of O(10 MeV) per baryon can be sufficient for obtaining a sizable ?Be abundance. The absence of a plateau structure in the ?Be/H abundance down to a O(10?¹?) level allows one to use beryllium as a robust constraint on new physics models with decaying or annihilating particles. PMID:21517297

Pospelov, Maxim; Pradler, Josef

2011-03-25

364

Primordial Beryllium as a Big Bang Calorimeter  

SciTech Connect

Many models of new physics including variants of supersymmetry predict metastable long-lived particles that can decay during or after primordial nucleosynthesis, releasing significant amounts of nonthermal energy. The hadronic energy injection in these decays leads to the formation of {sup 9}Be via the chain of nonequilibrium transformations: Energy{sub h}{yields}T, {sup 3}He{yields}{sup 6}He, {sup 6}Li{yields}{sup 9}Be. We calculate the efficiency of this transformation and show that if the injection happens at cosmic times of a few hours the release of O(10 MeV) per baryon can be sufficient for obtaining a sizable {sup 9}Be abundance. The absence of a plateau structure in the {sup 9}Be/H abundance down to a O(10{sup -14}) level allows one to use beryllium as a robust constraint on new physics models with decaying or annihilating particles.

Pospelov, Maxim [Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5 (Canada)] [Department of Physics and Astronomy, University of Victoria, Victoria, British Columbia, V8P 1A1 (Canada); Pradler, Josef [Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5 (Canada)

2011-03-25

365

Hadronization of expanding QGP  

Microsoft Academic Search

.  We discuss how the dynamics of an exploding hot fireball of quark-gluon matter impacts the actual phase transition conditions\\u000a between the deconfined and confined state of matter. We survey the chemical conditions prevailing at hadronization.

Johann Rafelski; Jean Letessier

2006-01-01

366

In Medium Hadron Properties  

E-print Network

We discuss modifications of hadron properties in the heat bath extracted from Euclidian correlation functions and spectral functions r econstructed with the Maximum Entropy Method. To investigate the cut-off dependencies we perform simulation on various lattice sizes and present the result of an analytic calculation of the mesonic spectral functions in the infinite temperature limit.

S. Stickan

2003-01-10

367

Hadron collider physics  

SciTech Connect

An introduction to the techniques of analysis of hadron collider events is presented in the context of the quark-parton model. Production and decay of W and Z intermediate vector bosons are used as examples. The structure of the Electroweak theory is outlined. Three simple FORTRAN programs are introduced, to illustrate Monte Carlo calculation techniques. 25 refs.

Pondrom, L.

1991-10-03

368

Measurement of Hadronic Event Shapes and Jet Substructure in Proton-Proton Collisions at 7.0 TeV Center-of-Mass Energy with the ATLAS Detector at the Large Hadron Collider  

SciTech Connect

This thesis presents the first measurement of 6 hadronic event shapes in proton-proton collisions at a center-of-mass energy of {radical}s = 7 TeV using the ATLAS detector at the Large Hadron Collider. Results are presented at the particle-level, permitting comparisons to multiple Monte Carlo event generator tools. Numerous tools and techniques that enable detailed analysis of the hadronic final state at high luminosity are described. The approaches presented utilize the dual strengths of the ATLAS calorimeter and tracking systems to provide high resolution and robust measurements of the hadronic jets that constitute both a background and a signal throughout ATLAS physics analyses. The study of the hadronic final state is then extended to jet substructure, where the energy flow and topology within individual jets is studied at the detector level and techniques for estimating systematic uncertainties for such measurements are commissioned in the first data. These first substructure measurements in ATLAS include the jet mass and sub-jet multiplicity as well as those concerned with multi-body hadronic decays and color flow within jets. Finally, the first boosted hadronic object observed at the LHC - the decay of the top quark to a single jet - is presented.

Miller, David Wilkins

2012-03-20

369

Estimation of Seismic Intensity Distribution around Omaezaki-city from the Roof Tiles Damage by the 2009 Suruga Bay Earthquake  

NASA Astrophysics Data System (ADS)

Seismic intensity distribution around Omaezaki-city was estimated from the roof tiles damage by the 2009 Suruga Bay Earthquake. First, roof tiles damage rate distribution was made using air photographs. We could easily distinguish roof tiles damage by air photographs. Next, period range of strong ground motions which correlates with roof tiles damage was investigated. We found that roof tiles damage correlate with JMA seismic intensity. Then, vulnerability function of roof tiles damage by JMA seismic intensity was made, and JMA seismic intensity distribution was estimated using this function. The JMA seismic intensity varies very locally. We found that JMA seismic intensity distribution can be estimated from roof tiles damage data by air photographs, but some problems were found such that we need sufficient number of wooden houses with roof tiles and that we could hardly distinguish wooden houses with roof tiles from house with no roof tiles.

Sakai, Yuki; Arai, Kenshuke; Akamatsu, Katsuyuki

370

Extracting hadron-neutron scattering amplitudes from hadron-proton and hadron-deuteron measurements  

NASA Technical Reports Server (NTRS)

A method is presented for extracting hadron-neutron scattering amplitudes from hadron-proton and hadron-deuteron measurements within the framework of the Glauber approximation. This method, which involves the solution of a linear integral equation, is applied to pn collisions between 15 and 275 GeV/c. Effects arising from inelastic intermediate states are estimated.

Franco, V.

1977-01-01

371

Recent improvements on the description of hadronic interactions in Geant4  

NASA Astrophysics Data System (ADS)

We present an overview of recent improvements of hadronic models in Geant4 for the physics configurations (Physics Lists) relevant to applications in high energy experiments. During last year the improvements have concentrated on the study of unphysical discontinuities in calorimeter observables in the transition regions between the models used in Physics Lists. The microscopic origin of these have been investigated, and possible improvements of Geant4 code are currently under validation. In this paper we discuss the status of the latest version of Geant4 with emphasis on the most promising new developments, namely the Fritiof based and CHIPS Physics Lists.

Dotti, A.; Apostolakis, J.; Folger, G.; Grichine, V.; Ivanchenko, V.; Kosov, M.; Ribon, A.; Uzhinsky, V.; Wright, D. H.

2011-04-01

372

Study of the effect of nano surface morphology on the stain-resistant property of ceramic tiles  

NASA Astrophysics Data System (ADS)

In this study, six types of commercially available ceramic tiles, including nano-structured ceramic tiles and regular ceramic tiles, were selected to investigate the effect of surface morphology on their stain-resistant property. The stain-resistant efficiencies of various ceramic tiles with nano-size surface were measured in order to determine the appropriate method for testing ceramic tiles with nano-structure surface.

Pan, S. P.; Hung, J. K.; Liu, Y. T.

2014-03-01

373

Overview of the backing calorimeter after the ZEUS detector upgrade  

Microsoft Academic Search

New hardware and software developments on the Backing Calorimeter (BAC) for the ZEUS detector are presented. The modernization of the detector was related to the recent luminosity upgrade of the HERA accelerator. The role and place of the BAC detector in the ZEUS experiment is described with special emphasis on the new BAC muon trigger and its diagnostic and monitoring

Tomasz Jezynski; Zbigniew Luszczak; Krzysztof T. Pozniak; Pawel Plucinski; Grzegorz Grzelak; Krzysztof Kierzkowski; Maciej I. Kudla; Michal Pietrusinski

2004-01-01

374

Development of a portable graphite calorimeter for radiation dosimetry.  

PubMed

We developed and performance-tested a portable graphite calorimeter designed to measure the absolute dosimetry of various beams including heavy-ion beams, based on a flexible and convenient means of measurement. This measurement system is fully remote-controlled by the GPIB system. This system uses a digital PID (Proportional, Integral, Derivative) control method based on the LabVIEW software. It was possible to attain stable conditions in a shorter time by this system. The standard deviation of the measurements using the calorimeter was 0.79% at a dose rate of 0.8 Gy/min in 17 calorimeter runs for a (60)Co photon beam. The overall uncertainties for the absorbed dose to graphite and water of the (60)Co photon beam using the developed calorimeter were 0.89% and 1.35%, respectively. Estimations of the correction factors due to vacuum gaps, impurities in the core, the dose gradient and the radiation profile were included in the uncertainties. The absorbed doses to graphite and water irradiated by the (60)Co photon beam were compared with dosimetry measurements obtained using three ionization chambers. The absorbed doses to graphite and water estimated by the two dosimetry methods agreed within 0.1% and 0.3%, respectively. PMID:21976250

Sakama, Makoto; Kanai, Tatsuaki; Fukumura, Akifumi

2008-01-01

375

Performance characteristics of an electromagnetic streamer tube calorimeter  

Microsoft Academic Search

We have tested an electromagnetic streamer tube calorimeter in an electron beam in the energy range 1-70 GeV. Also the dependence of the response and energy resolution on the particle rate and magnetic field were investigated. A magnetic field transverse to the streamer tubes has no effect, while a field parallel to the wires deteriorates the energy resolution.

Rainer Baumgart; Claus Grupen; Hans-Jürgen Meyer; Ulrich Schäfer

1987-01-01

376

PERFORMANCE GOALS AND DESIGN CONSIDERATIONS FOR A LINEAR COLLIDER CALORIMETER  

E-print Network

years of running at design luminosity. With a jet energy resolution of 30%/E a signal to background measurement would be simply impossible. Further design requirements - apart from the jet energy resolution1 PERFORMANCE GOALS AND DESIGN CONSIDERATIONS FOR A LINEAR COLLIDER CALORIMETER FELIX SEFKOW DESY

377

Processing of the Liquid Xenon calorimeter's signals for timing measurements  

NASA Astrophysics Data System (ADS)

One of the goals of the Cryogenic Magnetic Detector at Budker Institute of Nuclear Physics SB RAS (Novosibirsk, Russia) is a study of nucleons production in electron-positron collisions near threshold. The neutron-antineutron pair production events can be detected only by the calorimeters. In the barrel calorimeter the antineutron annihilation typically occurs by 5 ns or later after beams crossing. For identification of such events it is necessary to measure the time of flight of particles to the LXe-calorimeter with accuracy of about 3 ns. The LXe-calorimeter consists of 14 layers of ionization chambers with anode and cathode readout. The duration of charge collection to the anodes is about 4.5 mks, while the required accuracy of measuring of the signal arrival time is less than 1/1000 of that. Besides, the signals' shapes differ substantially from event to event, so the signal arrival time is measured in two stages. At the first stage, the signal arrival time is determined with an accuracy of 1–2 discretization periods, and initial values of parameters for subsequent fitting procedure are calculated. At the second stage, the signal arrival time is determined with the required accuracy by means of fitting of the signal waveform with a template waveform. To implement that, a special electronics has been developed which performs waveform digitization and On-Line measurement of signals' arrival times and amplitudes.

Epshteyn, L. B.; Yudin, Yu V.

2014-09-01

378

Zero Degree Cherenkov calorimeters for the ALICE experiment  

E-print Network

Zero Degree Cherenkov calorimeters for the ALICE experiment A. De Falco a,b R. Arnaldi c E collisions. The ZDCs detect the Cherenkov light produced by the fast particles in the shower that cross, published in "RICH 2007 - Sixth International Workshop on Ring Imaging Cherenkov Detectors, Trieste : Italie

Paris-Sud XI, Université de

379

Micro-Fabricated DC Comparison Calorimeter for RF Power Measurement  

PubMed Central

Diode detection and bolometric detection have been widely used to measure radio frequency (RF) power. However, flow calorimeters, in particular micro-fabricated flow calorimeters, have been mostly unexplored as power meters. This paper presents the design, micro-fabrication and characterization of a flow calorimeter. This novel device is capable of measuring power from 100 ?W to 200 mW. It has a 50-Ohm load that is heated by the RF source, and the heat is transferred to fluid in a microchannel. The temperature change in the fluid is measured by a thermistor that is connected in one leg of a Wheatstone bridge. The output voltage change of the bridge corresponds to the RF power applied to the load. The microfabricated device measures 25.4 mm × 50.8 mm, excluding the power supplies, microcontroller and fluid pump. Experiments demonstrate that the micro-fabricated sensor has a sensitivity up to 22 × 10?3 V/W. The typical resolution of this micro-calorimeter is on the order of 50 ?W, and the best resolution is around 10 ?W. The effective efficiency is 99.9% from 0–1 GHz and more than 97.5% at frequencies up to 4 GHz. The measured reflection coefficient of the 50-Ohm load and coplanar wave guide is less than ?25 dB from 0–2 GHz and less than ?16 dB at 2–4 GHz. PMID:25350509

Neji, Bilel; Xu, Jing; Titus, Albert H.; Meltzer, Joel

2014-01-01

380

TEMPERATURE AND HUMIDITY CONTROL IN INDIRECT CALORIMETER CHAMBERS  

Technology Transfer Automated Retrieval System (TEKTRAN)

A three chamber indirect calorimeter has been a part of the Environmental Laboratory at the U.S. Meat Animal Research Center (MARC) for over 25 yr (Nienaber and Maddy, 1987). Corrosion of the animal chamber and unreliable temperature control has forced major repairs. There is a strong demand for h...

381

U. Akgun, ECLIPSE06, Antalya, Quartz Plate Calorimeter Prototype  

E-print Network

U. Akgun, ECLIPSE06, Antalya, Turkey Quartz Plate Calorimeter Prototype "First Generation" U. Akgun. Onel The University of Iowa #12;U. Akgun, ECLIPSE06, Antalya, Turkey Introduction · While working for the first time this summer at CERN. #12;U. Akgun, ECLIPSE06, Antalya, Turkey Model Quartz Plate Prototype

Akgun, Ugur

382

IN-LINE CALORIMETER FOR MICROWAVE POWER MEASUREMENTS  

Microsoft Academic Search

The static in-line calorimeter measures the temperature rise in the ; walls of a waveguide caused by the attenuation of microwave power flowing through ; the waveguide. It can be constructed so that it will fit on waveguide already ; existing in a microwave system. The device is reliable because it uses no active ; circuitry. Few mechanical problems are

1962-01-01

383

First results on the Spaghetti Calorimeter projective prototype  

NASA Astrophysics Data System (ADS)

A 15-module projective Spaghetti Calorimeter prototype has been built. It has 32×32 mm 2 electromagnetic shower modules and separate read-out for the shorter fibres in the wedges for pion rejection. Beam test results on energy resolution, e/? discrimination and position resolution are presented.

Bencheikh, B.; Contin, A.; DeSalvo, R.; Hao, W.; Wang, Y. Y.; Xu, C.; You, K.

1992-05-01

384

A Double Calorimeter for 10 W Level Laser Power Measurements  

Microsoft Academic Search

A new type calorimeter for precise measurement of 10 W level laser power has been designed and fabricated. This is a double configuration consisting of an absorbing unit made of a disk absorber and an isothermal unit. The ratio of the substituted laser power to the dc power is determined for the absorbing unit. The design of basic construction and

M. Endo; T. Inoue

2004-01-01

385

Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)  

Microsoft Academic Search

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and

I. Keshelashvili; B. Krusche; M. Steinacher; Y. Heng; Z. Liu; H. Liu; X. Shen; O. Wang; H. Xu; J. Becker; F. Feldbauer; F.-H. Heinsius; T. Held; H. Koch; B. Kopf; M. Pelizaeus; T. Schroeder; M. Steinke; U. Wiedner; J. Zhong; A. Bianconi; M. Bragadireanu; D. Pantea; A. Tudorache; V. Tudorache; M. De Napoli; F. Giacoppo; G. Raciti; E. Rapisarda; C. Sfienti; E. Bialkowski; A. Budzanowski; B. Czech; M. Kistryn; S. Kliczewski; A. Kozela; P. Kulessa; K. Pysz; W. Schaefer; R. Siudak; A. Szczurek; W. Czy. zycki; M. Domagala; M. Hawryluk; E. Lisowski; F. Lisowski; L. Wojnar; D. Gil; P. Hawranek; B. Kamys; K. Korcyl; W. Krzemien; A. Magiera; P. Moskal; Z. Rudy; P. Salabura; J. Smyrski; A. Wronska; M. Al-Turany; I. Augustin; H. Deppe; H. Flemming; J. Gerl; K. Goetzen; R. Hohler; D. Lehmann; B. Lewandowski; J. Luehning; F. Maas; D. Mishra; H. Orth; K. Peters; T. Saito; G. Schepers; C. J. Schmidt; L. Schmitt; C. Schwarz; B. Voss; P. Wieczorek; A. Wilms; K.-T. Brinkmann; H. Freiesleben; R. Jaekel; R. Kliemt; T. Wuerschig; H.-G. Zaunick; V. M. Abazov; G. Alexeev; A. Arefiev; V. I. Astakhov; M. Yu. Barabanov; B. V. Batyunya; Yu. I. Davydov; V. Kh. Dodokhov; A. A. Efremov; A. G. Fedunov; A. A. Feshchenko; A. S. Galoyan; S. Grigoryan; A. Karmokov; E. K. Koshurnikov; V. Ch. Kudaev; V. I. Lobanov; Yu. Yu. Lobanov; A. F. Makarov; L. V. Malinina; V. L. Malyshev; G. A. Mustafaev; A. Olshevski; M. A.. Pasyuk; E. A. Perevalova; A. A. Piskun; T. A. Pocheptsov; G. Pontecorvo; V. K. Rodionov; Yu. N. Rogov; R. A. Salmin; A. G. Samartsev; M. G. Sapozhnikov; A. Shabratova; G. S. Shabratova; A. N. Skachkova; N. B. Skachkov; E. A. Strokovsky; M. K. Suleimanov; R. Sh. Teshev; V. V. Tokmenin; V. V. Uzhinsky; A. S. Vodopianov; S. A. Zaporozhets; N. I. Zhuravlev; A. G. Zorin; D. Branford; K. Foehl; D. Glazier; D. Watts; P. Woods; W. Eyrich; A. Lehmann; A. Teufel; S. Dobbs; Z. Metreveli; K. Seth; B. Tann; A. Tomaradze; D. Bettoni; V. Carassiti; A. Cecchi; P. Dalpiaz; E. Fioravanti; I. Garzia; M. Negrini; G. Stancari; B. Dulach; P. Gianotti; C. Guaraldo; V. Lucherini; E. Pace; A. Bersani; M. Macri; M. Marinelli; R. F. Parodi; I. Brodski; W. Doering; P. Drexler; M. Dueren; Z. Gagyi-Palffy; A. Hayrapetyan; M. Kotulla; W. Kuehn; S. Lange; M. Liu; V. Metag; M. Nanova; R. Novotny; C. Salz; J. Schneider; P. Schoenmeier; R. Schubert; S. Spataro; H. Stenzel; C. Strackbein; M. Thiel; U. Thoering; S. Yang; T. Clarkson; E. Cowie; E. Downie; G. Hill; M. Hoek; D. Ireland; R. Kaiser; T. Keri; I. Lehmann; K. Livingston; S. Lumsden; D. MacGregor; B. McKinnon; M. Murray; D. Protopopescu; G. Rosner; B. Seitz; G. Yang; M. Babai; A. K. Biegun; E. Guliyev; V. S. Jothi; M. Kavatsyuk; H. Loehner; J. Messchendorp; H. Smit; J. C. van der Weele; F. Garcia; D.-O. Riska; M. Buescher; R. Dosdall; R. Dzhygadlo; A. Gillitzer; D. Grunwald; V. Jha; G. Kemmerling; H. Kleines; A. Lehrach; R. Maier; M. Mertens; H. Ohm; D. Prasuhn; T. Randriamalala; J. Ritman; M. Roeder; T. Stockmanns; P. Wintz; P. Wuestner; J. Kisiel; S. Li; Z. Li; Z. Sun; S. Fissum; K. Hansen; L. Isaksson; M. Lundin; B. Schroeder; P. Achenbach; M. C. Mora Espi; J. Pochodzalla; S. Sanchez; A. Sanchez-Lorente; V. I. Dormenev; A. A. Fedorov; M. V. Korzhik; O. V. Missevitch; V. Balanutsa; V. Chernetsky; A. Demekhin; A. Dolgolenko; P. Fedorets; A. Gerasimov; V. Goryachev; A. Boukharov; O. Malyshev; I. Marishev; A. Semenov; C. Hoeppner; B. Ketzer; I. Konorov; A. Mann; S. Neubert; S. Paul; Q. Weitzel; A. Khoukaz; T. Rausmann; A. Taeschner; J. Wessels; R. Varma; E. Baldin; K. Kotov; S. Peleganchuk; Yu. Tikhonov; J. Boucher; T. Hennino; R. Kunne; S. Ong; J. Pouthas; B. Ramstein; P. Rosier; M. Sudol; J. Van de Wiele; T. Zerguerras; K. Dmowski; R. Korzeniewski; D. Przemyslaw; B. Slowinski; G. Boca; A. Braghieri; S. Costanza; A. Fontana; P. Genova; L. Lavezzi; P. Montagna; A. Rotondi; N. I. Belikov; A. M. Davidenko; A. A. Derevschikov; Y. M. Goncharenko; V. N. Grishin; V. A. Kachanov; D. A. Konstantinov; V. A. Kormilitsin; V. I. Kravtsov; Y. A. Matulenko; Y. M. Melnik; A. P. Meschanin; N. G. Minaev; V. V. Mochalov; D. A. Morozov; L. V. Nogach; S. B. Nurushev; A. V. Ryazantsev; P. A. Semenov; L. F. Soloviev; A. V. Uzunian; A. N. Vasiliev; A. E. Yakutin; T. Baeck; B. Cederwall; C. Bargholtz; L. Geren; P. E. Tegner; S. Belostotski; G. Gavrilov; A. Itzotov; A. Kisselev; P. Kravchenko; S. Manaenkov; O. Miklukho; Y. Naryshkin; D. Veretennikov; V. Vikhrov; A. Zhadanov; L. Fava; D. Panzieri; D. Alberto; A. Amoroso; E. Botta; T. Bressani; S. Bufalino; M. P. Bussa; L. Busso; F. De Mori; M. Destefanis; L. Ferrero; A. Grasso; M. Greco; T. Kugathasan; M. Maggiora; S. Marcello; G. Serbanut; S. Sosio; R. Bertini; D. Calvo; S. Coli; P. De Remigis; A. Feliciello; G. Giraudo; G. Mazza; A. Rivetti; K. Szymanska; F. Tosello; R. Wheadon; O. Morra; M. Agnello; F. Iazzi; R. Birsa

2008-01-01

386

Measurement of the Cross-Section for the Two-Photon Production of Proton Antiproton Pairs, and, Electron-Pion Separation with the Spaghetti Calorimeter.  

NASA Astrophysics Data System (ADS)

A measurement of the cross-section for gammagamma to p| p has been performed at two-photon center-of-mass energies from 2.00 to 3.25 GeV. These results have been obtained using e^+e^- to e^+e^ -p| p events selected from 1.31 fb ^{-1} of data taken with the CLEO II detector, which operates at the e^+e ^- storage ring CESR. Particle identification has been achieved by utilizing information from time-of -flight, specific ionization energy loss, energy deposited in the calorimeter, and muon tracking chambers. The measured cross-section is in reasonable agreement with previous measurements and is in excellent agreement with calculations based on a diquark model specifically suited for moderately large values of the two-photon center-of-mass energy. A leading order QCD calculation performed using the Brodsky -Lepage formalism is well below the measured cross-section. Spaghetti calorimeters, detectors consisting of longitudinally-oriented scintillating fibers embedded in lead matrices, have been constructed. They range in size from being nearly sufficient for containment of 10 GeV electromagnetic showers to being sufficient for full containment of 150 GeV hadronic showers. Information from transverse shower containment in these devices combined with information from a pre-shower detector has been shown to allow for electrons to be identified with high efficiency (98%), while misidentifying only a small fraction of pions ((3.7 +/- 2.1) times 10^{-4}). Two different methods for distinguishing electrons from pions have been explored. In addition, it has been demonstrated that this detector technology can be used to locate electrons producing showers near the showers of single pions and of jets. Electrons have been located near hadronic showers down to distances comparable to the transverse dimensions of the modules in the spaghetti calorimeters (90 mm).

Ong, Beale H.

387

Pion-to-proton ratio for unaccompanied high-energy cosmic-ray hadrons at mountain altitude using transition-radiation detector  

Microsoft Academic Search

A transition-radiation (TR) detector, consisting of 24 modules of styrofoam radiators and multiwire proportional chambers, and an ionization calorimeter have been used to measure the pion-to-proton ratio among the unaccompanied cosmic-ray hadrons at a mountain altitude of 730 g cm-2. Using the characteristics of the TR detector obtained from calibrations with particle beams at accelerators, the pip ratio has been

R. W. Ellsworth; A. S. Ito; J. R. MacFall; F. Siohan; R. E. Streitmatter; S. C. Tonwar; P. R. Viswanath; G. B. Yodh

1983-01-01

388

Spin in Hadron Reactions  

E-print Network

The Relativistic Heavy Ion Collider (RHIC) has brought the study of spin effects in hadronic collisions to a new energy regime. In conjunction with other experiments at facilities around the world, much can be learned from the high-energy polarized proton collisions RHIC provides, allowing the collider to serve as a powerful tool to continue to understand the rich subtleties and surprises of spin effects in QCD, some of which were originally discovered more than three decades ago.

Christine A. Aidala

2009-03-13

389

Constraining ? G at Low-x with Double Longitudinal Spin Asymmetries for Forward Hadron and Di-Hadron Pairs in PHENIX  

NASA Astrophysics Data System (ADS)

The gluon polarization, ?G=0^1g(x)dx, is constrained in the region 0.05hadron and jet production at mid-rapidity at RHIC. Theoretical analysis of experimental results shows that 0.05^0.2?g(x)dx=0.013-0.120^+0.106 . This is not large enough to account for the missing proton spin. However, ?g(x) is unconstrained at low-x, and a measurement sensitive to this region will provide important input for future global analyses. The measurement of ALL for inclusive hadrons and di-hadrons with the Muon Piston Calorimeter (MPC) 3.1hadron measurement is especially interesting as it is sensitive to the sign of ?G and best constrains the parton kinematics giving the most precise access to xgluon. The inclusive measurement provides a looser constraint on the event kinematics but has a higher yield. We will present the status of these measurements for the 2009 dataset at ?s=500 GeV and ?s=200 GeV.

Wolin, Scott

2011-10-01

390

Completion of the L3 e.m. calorimeter with a lead-scintillating fibers spaghetti calorimeter  

NASA Astrophysics Data System (ADS)

We report on the test-beam results for three prototype modules of a lead-scintillating fiber ( spaghetti) calorimeter. We studied linearity, energy resolution and light collection. The results are in agreement with expectations from MC simulation. We also report on the studies for the optimal light guide to be used in the final design.

Basti, G.; Boucham, A.; Campanelli, M.; Cecchi, C.; de Notaristefani, F.; Diemoz, M.; Ferroni, F.; Iaciofano, A.; Janssen, B.; Karyotakis, Y.; Lebeau, M.; Lesueur, J.; Longo, E.; Organtini, G.; Tsipolitis, Y.

1995-11-01

391

Pion-to-proton ratio for unaccompanied high-energy cosmic-ray hadrons at mountain altitude using transition-radiation detector  

NASA Astrophysics Data System (ADS)

A transition-radiation (TR) detector, consisting of 24 modules of styrofoam radiators and multiwire proportional chambers, and an ionization calorimeter have been used to measure the pion-to-proton ratio among the unaccompanied cosmic-ray hadrons at a mountain altitude of 730 g cm-2. Using the characteristics of the TR detector obtained from calibrations with particle beams at accelerators, the ?p ratio has been determined for cosmic-ray hadrons as ?p=0.96+/-0.15 for hadron energy = 400-800 GeV, and ?p=0.45+/-0.25 for energy > 800 GeV. Monte Carlo simulations of hadron cascades in the atmosphere using the approximate criterion of unaccompaniment suggest that the observed ?p ratio as well as the previously reported neutral-to-charge ratio can be understood by assuming a value of about 13 for the charge exchange in nucleon-air-nucleus inelastic interactions at energies above 400 GeV.

Ellsworth, R. W.; Ito, A. S.; MacFall, J. R.; Siohan, F.; Streitmatter, R. E.; Tonwar, S. C.; Viswanath, P. R.; Yodh, G. B.

1983-05-01

392

Third-order phase transition in random tilings  

E-print Network

We consider the domino tilings of an Aztec diamond with a cut-off corner of macroscopic square shape and given size, and address the bulk properties of tilings as the size is varied. We observe that the free energy exhibits a third-order phase transition when the cut-off square, increasing in size, reaches the arctic ellipse---the phase separation curve of the original (unmodified) Aztec diamond. We obtain this result by studying the thermodynamic limit of certain nonlocal correlation function of the underlying six-vertex model with domain wall boundary conditions, the so-called emptiness formation probability (EFP). We consider EFP in two different representations: as a tau-function for Toda chains and as a random matrix model integral. The latter has a discrete measure and a linear potential with hard walls; the observed phase transition shares properties with both Gross-Witten-Wadia and Douglas-Kazakov phase transitions.

F. Colomo; A. G. Pronko

2014-05-30

393

Third-order phase transition in random tilings.  

PubMed

We consider the domino tilings of an Aztec diamond with a cut-off corner of macroscopic square shape and given size and address the bulk properties of tilings as the size is varied. We observe that the free energy exhibits a third-order phase transition when the cut-off square, increasing in size, reaches the arctic ellipse-the phase separation curve of the original (unmodified) Aztec diamond. We obtain this result by studying the thermodynamic limit of a certain nonlocal correlation function of the underlying six-vertex model with domain wall boundary conditions, the so-called emptiness formation probability (EFP). We consider EFP in two different representations: as a ? function for Toda chains and as a random matrix model integral. The latter has a discrete measure and a linear potential with hard walls; the observed phase transition shares properties with both Gross-Witten-Wadia and Douglas-Kazakov phase transitions. PMID:24229134

Colomo, F; Pronko, A G

2013-10-01

394

Third-order phase transition in random tilings  

NASA Astrophysics Data System (ADS)

We consider the domino tilings of an Aztec diamond with a cut-off corner of macroscopic square shape and given size and address the bulk properties of tilings as the size is varied. We observe that the free energy exhibits a third-order phase transition when the cut-off square, increasing in size, reaches the arctic ellipse—the phase separation curve of the original (unmodified) Aztec diamond. We obtain this result by studying the thermodynamic limit of a certain nonlocal correlation function of the underlying six-vertex model with domain wall boundary conditions, the so-called emptiness formation probability (EFP). We consider EFP in two different representations: as a ? function for Toda chains and as a random matrix model integral. The latter has a discrete measure and a linear potential with hard walls; the observed phase transition shares properties with both Gross-Witten-Wadia and Douglas-Kazakov phase transitions.

Colomo, F.; Pronko, A. G.

2013-10-01

395

Slipping properties of ceramic tiles / Quantification of slip resistance  

NASA Astrophysics Data System (ADS)

Regarding the research and application of ceramic tiles there is a great importance of defining precisely the interaction and friction between surfaces. Measuring slip resistance of floor coverings is a complex problem; slipperiness is always interpreted relatively. In the lack of a consistent and clear EU standard, it is practical to use more method in combination. It is necessary to examine the structure of materials in order to get adequate correlation. That is why measuring techniques of surface roughness, an important contributor to slip resistance and cleaning, is fundamental in the research. By comparing the obtained test results, relationship between individual methods of analysis and values may be determined and based on these information recommendations shall be prepared concerning the selection and application of tiles.

Terjek, Anita

2013-12-01

396

Large-scale testing of structural clay tile infilled frames  

SciTech Connect

A summary of large-scale cyclic static tests of structural clay tile infilled frames is given. In-plane racking tests examined the effects of varying frame stiffness, varying infill size, infill offset from frame centerline, and single and double wythe infill construction. Out-of-plane tests examined infilled frame response to inertial loadings and inter-story drift loadings. Sequential in-plane and out-of-plane loadings were performed to determine the effects of orthogonal damage and degradation on both strength and stiffness. A combined out-of-plane inertial and in-plane racking test was conducted to investigate the interaction of multi-directional loading. To determine constitutive properties of the infills, prism compression, mortar compression and various unit tile tests were performed.

Flanagan, R.D. [Oak Ridge Y-12 Plant, TN (United States); Bennett, R.M. [Tennessee Univ., Knoxville, TN (United States). Dept. of Civil Engineering

1993-03-18

397

Tiling patterns from ABC star molecules: 3-colored foams?  

PubMed

We present coarse-grained simulations of the self-assembly of 3-armed ABC star polyphiles. In systems of star polyphiles with two arms of equal length the simulations corroborate and expand previous findings from related miktoarm star terpolymer systems on the formation of patterns containing columnar domains whose sections are 2D planar tilings. However, the systematic variation of face topologies as the length of the third (unequal) arm is varied differs from earlier findings regarding the compositional dependence. We explore 2D 3-colored foams to establish the optimal patterns based on interfacial energy alone. A generic construction algorithm is described that accounts for all observed 2D tiling patterns and suggests other patterns likely to be found beyond the range of the simulations reported here. Patterns resulting from this algorithm are relaxed using Surface Evolver calculations to form 2D foams with minimal interfacial length as a function of composition. This allows us to estimate the interfacial enthalpic contributions to the free energy of related star molecular assemblies assuming strong segregation. We compare the resulting phase sequence with a number of theoretical results from particle-based simulations and field theory, allowing us to tease out relative enthalpic and entropic contributions as a function of the chain lengths making up the star molecules. Our results indicate that a richer polymorphism is to be expected in systems not dominated by chain entropy. Further, analysis of corresponding planar tiling patterns suggests that related two-periodic columnar structures are unlikely hypothetical phases in 4-arm star polyphile melts in the absence of sufficient arm configurational freedom for minor domains to form lens-shaped di-gons, which require higher molecular weight polymeric arms. Finally, we discuss the possibility of forming a complex tiling pattern that is a quasi-crystalline approximant for 3-arm star polyphiles with unequal arm lengths. PMID:25026461

Kirkensgaard, Jacob J K; Pedersen, Martin C; Hyde, Stephen T

2014-10-01

398

High energy hadron-hadron collisions. [Dept. of Physics and Astronomy, Univ. of Georgia, Athens, Georgia  

SciTech Connect

Results of a study on high energy collisions with the geometrical model are summarized in three parts: (1) the elastic hadron-hadron collision, (2) the inelastic hadron-hadron collision, and (3) e[sup +]e[sup [minus

Chou, T.T.

1992-01-01

399

Effects of thermal blooming on systems comprised of tiled subapertures  

NASA Astrophysics Data System (ADS)

Laser weapon systems comprise of tiled subapertures are rapidly emerging in the directed energy community. The Air Force Institute of Technology Center for Directed Energy (AFIT/CDE), under sponsorship of the HEL Joint Technology Office has developed performance models of such laser weapon system configurations consisting of tiled arrays of both slab and fiber subapertures. These performance models are based on results of detailed waveoptics analyses conducted using WaveTrain. Previous performance model versions developed in this effort represent system characteristics such as subaperture shape, aperture fill factor, subaperture intensity profile, subaperture placement in the primary aperture, subaperture mutual coherence (piston), subaperture differential jitter (tilt), and beam quality wave-front error associated with each subaperture. The current work is a prerequisite for the development of robust performance models for turbulence and thermal blooming effects for tiled systems. Emphasis is placed on low altitude tactical scenarios. The enhanced performance model developed will be added to AFIT/CDE's HELEEOS parametric one-on-one engagement level model via the Scaling for High Energy Laser and Relay Engagement (SHaRE) toolbox.

Leakeas, Charles L.; Bartell, Richard J.; Krizo, Matthew J.; Fiorino, Steven T.; Cusumano, Salvatore J.; Whiteley, Matthew R.

2010-04-01

400

Equilibrium thermal characteristics of a building integrated photovoltaic tiled roof  

SciTech Connect

Photovoltaic (PV) modules attain high temperatures when exposed to a combination of high radiation levels and elevated ambient temperatures. The temperature rise can be particularly problematic for fully building integrated PV (BIPV) roof tile systems if back ventilation is restricted. PV laminates could suffer yield degradation and accelerated aging in these conditions. This paper presents a laboratory based experimental investigation undertaken to determine the potential for high temperature operation in such a BIPV installation. This is achieved by ascertaining the dependence of the PV roof tile temperature on incident radiation and ambient temperature. A theory based correction was developed to account for the unrealistic sky temperature of the solar simulator used in the experiments. The particular PV roof tiles used are warranted up to an operational temperature of 85 C, anything above this temperature will void the warranty because of potential damage to the integrity of the encapsulation. As a guide for installers, a map of southern Europe has been generated indicating locations where excessive module temperatures might be expected and thus where installation is inadvisable. (author)

Mei, L.; Gottschalg, R.; Loveday, D.L. [Centre for Renewable Energy Systems Technology (CREST), Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU (United Kingdom); Infield, D.G. [Institute of Energy and Environment, Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, G1 1XW (United Kingdom); Davies, D.; Berry, M. [Solarcentury, 91-94 Lower Marsh Waterloo, London, SE1 7AB (United Kingdom)

2009-10-15

401

Functionalization of ceramic tile surface by sol-gel technique.  

PubMed

The aim of this investigation was the surface functionalization of industrial ceramic tiles by sol-gel technique to improve at the same time the cleanability of unglazed surfaces. This objective was pursued through the design and preparation of nanostructured coating that was deposited on polished unglazed tiles by air-brushing. In particular TiO(2)-SiO(2) binary film with 1, 2 or 5wt% of titania were prepared by using tetraethoxysilane and titania nanoparticles as precursors. The obtained films were characterized by scratch tests to verify the adhesion of the coatings to the polished tiles. To mainly evaluate the effect of the thermal treatment (temperature range 100-600 degrees C) on the photocatalicity of the coatings, the films were studied under UV exposure by contact angle measurements and cleanability test. Particular attention has been paid to preserve the aesthetical aspect of the final product and the obtained hue variation was evaluated by means of UV-visible spectroscopy and colorimetric analysis. PMID:19398103

Bondioli, F; Taurino, R; Ferrari, A M

2009-06-15

402

CAD Tools for Creating Space-filing 3D Escher Tiles  

SciTech Connect

We discuss the design and implementation of CAD tools for creating decorative solids that tile 3-space in a regular, isohedral manner. Starting with the simplest case of extruded 2D tilings, we describe geometric algorithms used for maintaining boundary representations of 3D tiles, including a Java implementation of an interactive constrained Delaunay triangulation library and a mesh-cutting algorithm used in layering extruded tiles to create more intricate designs. Finally, we demonstrate a CAD tool for creating 3D tilings that are derived from cubic lattices. The design process for these 3D tiles is more constrained, and hence more difficult, than in the 2D case, and it raises additional user interface issues.

Howison, Mark; Sequin, Carlo H.

2009-04-10

403

Modal analysis and dynamic stresses for acoustically excited Shuttle insulation tiles  

NASA Technical Reports Server (NTRS)

The thermal protection system of the Space Shuttle consists of thousands of separate insulation tiles, of varying thicknesses, bonded to the orbiter's surface through a soft strain-isolation pad which is bonded, in turn, to the vehicle's stiffened metallic skin. A modal procedure for obtaining the acoustically induced RMS stress in these comparatively thick tiles is described. The modes employed are generated by a previously developed iterative procedure which converges rapidly for the combined system of tiles and primary structure considered. Each tile is idealized by several hundred three-dimensional finite elements and all tiles on a given panel interact dynamically. Acoustic response results from the present analyses are presented. Comparisons with other analytical results and measured modal data for a typical Shuttle panel, both with and without tiles, are made, and the agreement is good.

Ojalvo, I. U.; Ogilvie, P. I.

1976-01-01

404

TiArA: A Virtual Appliance for the Analysis of Tiling Array Data  

Microsoft Academic Search

BackgroundGenomic tiling arrays have been described in the scientific literature since 2003, yet there is a shortage of user-friendly applications available for their analysis.Methodology\\/Principal FindingsTiling Array Analyzer (TiArA) is a software program that provides a user-friendly graphical interface for the background subtraction, normalization, and summarization of data acquired through the Affymetrix tiling array platform. The background signal is empirically measured

Jason A. Greenbaum; Erika Assarsson; Jo L. Chung; Steven Head; Alessandro Sette; Bjoern Peters

2010-01-01

405

Patterns Arising From Tiling Rectangles With 1-by-1 and 2-by-2 Squares  

E-print Network

such as the Fibonacci and Lucas sequences [2, 4, 5, 6]; the link between the number of tilings and the respective number of Tm,n, the total number of tilings of an m-by-n area. Keywords: Tiling, Fibonacci numbers, square Fn = the nth Fibonacci number (F1 = F2 = 1, Fm = Fm-1 + Fm-2). In addition, we define T0 m,0 = 1

Heubach, Silvia

406

Analysis of Genomic Tiling Microarrays for Transcript Mapping and the Identification of Transcription Factor Binding Sites  

Microsoft Academic Search

\\u000a The recently developed technology of genomic tiling microarrays, which can be used for genome annotation, has required the\\u000a development of new methodologies [Royce et.al] for their design and analysis. Genomic tiling arrays use PCR amplicons or short\\u000a oligonucleotide probes to tile the non-repetitive DNA sequence of a genome in an unbiased fashion for the purposes of detecting novel genomic features.

Joel S. Rozowsky; Paul Bertone; Thomas E. Royce; Sherman Weissman; Michael Snyder; Mark Gerstein

2005-01-01

407

An Adaptive Neural Network-Based Method for Tile Replacement in a Web Map Cache  

Microsoft Academic Search

\\u000a Most popular web map services, such as Google Maps, serve pre-generated image tiles from a server-side cache. However, storage\\u000a needs are often prohibitive, forcing administrators to use partial caches containing a subset of the total tiles. When the\\u000a cache runs out of space for allocating incoming requests, a cache replacement algorithm must determine which tiles should\\u000a be replaced. Cache replacement

Ricardo García; Juan Pablo de Castro; María Verdú; Elena Verdú; Luisa Regueras; Pablo López

408

Ceramic-ceramic shell tile thermal protection system and method thereof  

NASA Technical Reports Server (NTRS)

A ceramic reusable, externally applied composite thermal protection system (TPS) is proposed. The system functions by utilizing a ceramic/ceramic upper shell structure which effectively separates its primary functions as a thermal insulator and as a load carrier to transmit loads to the cold structure. The composite tile system also prevents impact damage to the atmospheric entry vehicle thermal protection system. The composite tile comprises a structurally strong upper ceramic/ceramic shell manufactured from ceramic fibers and ceramic matrix meeting the thermal and structural requirements of a tile used on a re-entry aerospace vehicle. In addition, a lightweight high temperature ceramic lower temperature base tile is used. The upper shell and lower tile are attached by means effective to withstand the extreme temperatures (3000 to 3200F) and stress conditions. The composite tile may include one or more layers of variable density rigid or flexible thermal insulation. The assembly of the overall tile is facilitated by two or more locking mechanisms on opposing sides of the overall tile assembly. The assembly may occur subsequent to the installation of the lower shell tile on the spacecraft structural skin.

Riccitiello, Salvatore R. (inventor); Smith, Marnell (inventor); Goldstein, Howard E. (inventor); Zimmerman, Norman B. (inventor)

1986-01-01

409

Aperiodic compression and reconstruction of real-world material systems based on Wang tiles  

NASA Astrophysics Data System (ADS)

The paper presents a concept to compress and synthesize complex material morphologies that is based on Wang tilings. Specifically, a microstructure is stored in a set of Wang tiles and its reconstruction is performed by means of a stochastic tiling algorithm. A substantial part of the study is devoted to the setup of optimal parameters of the automatic tile design by means of parametric studies with statistical descriptors at heart. The performance of the method is demonstrated on four two-dimensional two-phase target systems, monodisperse media with hard and soft disks, sandstone, and high porosity metallic foam.

Došká?, Martin; Novák, Jan; Zeman, Jan

2014-12-01

410

Hypothetical Reentry Thermostructural Performance of Space Shuttle Orbiter With Missing or Eroded Thermal Protection Tiles  

NASA Technical Reports Server (NTRS)

This report deals with hypothetical reentry thermostructural performance of the Space Shuttle orbiter with missing or eroded thermal protection system (TPS) tiles. The original STS-5 heating (normal transition at 1100 sec) and the modified STS-5 heating (premature transition at 800 sec) were used as reentry heat inputs. The TPS missing or eroded site is assumed to be located at the center or corner (spar-rib juncture) of the lower surface of wing midspan bay 3. For cases of missing TPS tiles, under the original STS-5 heating, the orbiter can afford to lose only one TPS tile at the center or two TPS tiles at the corner (spar-rib juncture) of the lower surface of wing midspan bay 3. Under modified STS-5 heating, the orbiter cannot afford to lose even one TPS tile at the center or at the corner of the lower surface of wing midspan bay 3. For cases of eroded TPS tiles, the aluminum skin temperature rises relatively slowly with the decreasing thickness of the eroded central or corner TPS tile until most of the TPS tile is eroded away, and then increases exponentially toward the missing tile case.

Ko, William L.; Gong, Leslie; Quinn, Robert D.

2004-01-01

411

High energy hadron-hadron collisions. Annual progress report  

SciTech Connect

Results of a study on high energy collisions with the geometrical model are summarized in three parts: (1) the elastic hadron-hadron collision, (2) the inelastic hadron-hadron collision, and (3) e{sup +}e{sup {minus}} annihilation. For elastic scattering, a modified form for the hadronic matter form factor of the proton was proposed which is still dipole in form but contains an energy--dependent range parameter. This new expression of the opacity function fits the elastic {bar p}p scattering very well from the ISR to S{bar p}pS energies. Extrapolation of this theory also yielded results {bar p}p in good agreement with the {bar p}p differential cross section measured at the Tevatron. For inelastic hadron-hadron collisions, we have made a systematic investigation of the single-particle momentum spectra in the entire S{bar p}pS energy region. Results are useful for the extrapolation of angular distribution to the higher SSC energies. In e{sup +}e{sup {minus}} annihilation, a detailed analysis of all available experimental multiplicity data from PETRA to LEP energies has been performed. The cluster size of emitted hadrons increases gradually with energy. Aside from high-energy collisions, the giant fullerene molecules were studied and precise algebraic eigenvalue expressions of the Hueckel problem for carbon-240 were obtained.

Chou, T.T.

1992-12-31

412

Prototype design of DAMPE Calorimeter readout electronics and performance in CERN beam test  

NASA Astrophysics Data System (ADS)

A high energy cosmic ray detector to be in space, called DArk Matter Particle Explorer (DAMPE), is now being developed in China. The major scientific objectives of the DAMPE mission are primary cosmic ray, gamma ray astronomy and dark matter particles, by observing high energy primary cosmic rays, especially positrons/electrons and gamma rays with an energy range from 5 GeV to 10 TeV. The DAMPE detector is intended to operate in a 500 km satellite orbit, and a calorimeter, which is composed of 308 BGO (Bismuth Germanate) crystal logs with a size of 2.5cm*2.5cm*60cm for each log, is a critical sub-detector for measuring the energy of cosmic particles, distinguishing positrons/electrons and gamma rays from hadron background, and providing trigger information. Each BGO crystal log is viewed by two Hamamatsu R5610A PMTs (photomultiplier tubes), from both sides respectively. In order to achieve a large dynamic range, each PMT base incorporates a three dynode (2, 5, 8) pick off, which results in 616 PMTs and 1848 signal channels. According to the design specification, a dynamic range of 10(5) is need for each BGO detector units. The large amount of detector components and signal channels, as well as large dynamic range, greatly challenge the design of readout electronics, because the physical space of PCB (Printed Circuit Board) and cable layout, crosstalk between signal channels and power budget, are strictly constrained. In year 2012, a prototype of DAMPE was accomplished, including a scaled-down BGO calorimeter with 132 short BGO bars. Each short BGO bar, with a size of 2.5cm*2.5cm*30cm, is coupled with a R5610A PMT on one end, while the other end is wrapped by heat-shrinkable black sleeves. A prototype of the readout electronics, using VA32 ASIC (Application Specific Integrated Circuit) and Actel Flash-based FPGA (Field Programmable Gate Array), are developed and assembled with the detector. After 1 month ground-based cosmic ray tests in China, an accelerator experiment for DAMPE prototype was successfully carried out at CERN, in October, 2012, using the Super Proton Synchrotron (SPS). The design of the readout electronics and the performance during experiments are to be described in this paper.

Feng, Changqing; Hu, Yiming; Gao, Shanshan; Zhang, Deliang; Zhang, Yunlong; Liu, Shubin; An, Qi

413

High energy hadron-hadron collisions. Final report  

SciTech Connect

This project of studying high energy collision phenomena with the geometrical model has been undertaken and developed by this investigator and collaborators since 1967. Instead of basing conjectures on mathematical extrapolations from some ad hoc theories, this approach was to scrutinize first the general features of the phenomena before going into specific details. This particular method has proved successful in correlating experimental data, suggesting experiments, predicting new phenomena and guiding future experimental studies. In the following, important results of the geometrical model obtained with the support of the DOE grant are summarized in three parts: the elastic hadron-hadron scattering, the inelastic hadron-hadron collision, and the hadronic production in e{sup +}e{sup {minus}} annihilation. The fourth part of this report outlines the results of other topics of investigation. To avoid repetition, only the main physical ideas and essential experimental evidences are presented, leaving out detailed discussions which can be found in the literature and previous reports.

Chou, T.T.

1995-08-01

414

Charmed hadrons from strangeness-rich QGP  

Microsoft Academic Search

The yields of charmed hadrons emitted by strangeness-rich QGP are evaluated within the chemical non-equilibrium statistical hadronization model, conserving strangeness, charm and entropy yields at hadronization.

Inga Kuznetsova; Johann Rafelski

2006-01-01

415

Modeling and scanning of lightguides for Pb/SCIFI calorimeters  

NASA Astrophysics Data System (ADS)

Calorimeters containing embedded arrays of scintillating fibers often require uniform-acceptance lightguides to gather, mix and transport light from the end face of the module to a photo-sensitive detector. To optimize such devices, we have built a flexible lightguide scanning station which imitates the distribution of light coming from an array of scintillating fibers. This system has been used to map the photocathode response of photomultiplier tubes, the transmission uniformity of lightguides and the performance of detector-lightguide combinations. Additionally, we have developed a ray-trace modeling program which accurately reproduces the experimental results. These tools are described in the context of our own application-specific examples, while their general nature makes them attractive in other situations where lightguides are involved. Finally, the effect of lightguide non-uniformity is evaluated in order to estimate the systematic contribution to the calorimeter energy resolution description.

Simon, D. A.; Hertzog, D. W.; Jones, T. D.; Rhodes, M. W.; Yairi, M. B.

1993-10-01

416

Confinement and hadron-hadron interactions by general relativistic methods  

NASA Astrophysics Data System (ADS)

By postulating covariance of physical laws under global dilations, one can describe gravitational and strong interactions in a unified way. Namely, in terms of the new discrete dilational degree of freedom, our cosmos and hadrons can be regarded as finite, similar systems. And a discrete hierarchy of finite ``universes'' may be defined, which are governed by fields with strengths inversally proportional to their radii; in each universe an Equivalence Principle holds, so that the relevant field can be there geometrized. Scaled-down Einstein equations -with cosmological term- are assumed to hold inside hadrons (= strong micro-cosmoses); and they yield in a natural way classical confinement, as well as ``asymptotic freedom'', of the hadron constituents. In other words, the association of strong micro-universes of Friedmann type with hadrons (i.e., applying the methods of General Relativity to subnuclear particle physics) allows avoiding recourse to phenomenological models such as the Bag Model. Inside hadrons we have to deal with a tensorial field (= strong gravity), and hadron constituents are supposed to exchange spin-2 ``gluons''. Our approach allows us also to write down a tensorial, bi-scale field theory of hadron-hadron interactions, based on modified Einstein-type equations here proposed for strong interactions in our space. We obtain in particular: (i) the correct Yukawa behaviour of the strong scalar potential at the static limit and for r>~l fm; (ii) the value of hadron radii. As a byproduct, we derive a whole ``numerology'', connecting our gravitational cosmos with the strong micro-cosmoses (hadrons), such that it does imply no variation of G with the epoch. Finally, since a structute of the ``micro-universe'' type seems to be characteristic even of leptons, a hope for the future is including also weak interactions in our classical unification of the fundamental forces.

Recami, Erasmo

417

Performance of the ATLAS electromagnetic calorimeter barrel module 0  

Microsoft Academic Search

The construction and performance of the barrel pre-series module 0 of the future ATLAS electromagnetic calorimeter at the LHC is described. The signal reconstruction and performance of ATLAS-like electronics has been studied. The signal to noise ratio for muons has been found to be \\/7.11+\\/-0.07. An energy resolution of better than 9.5%GeV1\\/2\\/sqrt(E) (sampling term) has been obtained with electron beams

B. Aubert; J. Ballansat; A. Bazan; B. Beaugiraud; J. Boniface; F. Chollet; J. Colas; P. Delebecque; L. di Ciaccio; N. Dumont-Dayot; M. El Kacimi; O. Gaumer; P. Ghez; C. Girard; M. Gouanère; H. Kambara; A. Jérémie; S. Jézéquel; R. Lafaye; T. Leflour; C. Le Maner; J. Lesueur; N. Massol; M. Moynot; L. Neukermans; P. Perrodo; G. Perrot; L. Poggioli; J. Prast; H. Przysiezniak; X. Riccadona; G. Sauvage; J. Thion; I. Wingerter-Seez; R. Zitoun; Y. Zolnierowski; H. Chen; M. Citterio; J. Farrell; H. Gordon; B. Hackenburg; A. Hoffman; J. Kierstead; F. Lanni; M. Leite; D. Lissauer; H. Ma; D. Makowiecki; V. Radeka; D. Rahm; S. Rajagopalan; S. Rescia; I. Stumer; H. Takai; K. Yip; D. Benchekroun; C. Driouichi; A. Hoummada; M. Hakimi; R. Stroynowski; J. Ye; J. Beck Hansen; A. Belymam; J. Bremer; J. L. Chevalley; P. Fassnacht; F. Gianotti; L. Hervas; C. P. Marin; P. Pailler; P. Schilly; W. Seidl; J. Vossebeld; V. Vuillemin; A. Clark; I. Efthymiopoulos; L. Moneta; B. Belhorma; J. Collot; P. de Saintignon; D. Dzahini; A. Ferrari; M. L. Gallin-Martel; J. Y. Hostachy; P. Martin; J. F. Muraz; F. Ohlsson-Malek; S. Saboumazrag; J. Ban; N. Cartiglia; H. Cunitz; J. Dodd; A. Gara; M. Leltchouk; S. Negroni; J. A. Parsons; M. Seman; S. Simion; W. Sippach; W. Willis; F. Barreiro; G. Garcia; L. Labarga; S. Rodier; J. del Peso; C. Alexa; P. Barrillon; C. Benchouk; A. Chekhtman; B. Dinkespiler; F. Djama; P. Y. Duval; F. Henry-Couannier; L. Hinz; M. Jevaud; P. Karst; A. Le van Suu; L. Martin; O. Martin; A. Mirea; E. Monnier; E. Nagy; D. Nicod; C. Olivier; P. Pralavorio; B. Repetti; M. Raymond; D. Sauvage; S. Tisserant; J. Toth; M. Wielers; G. Battistoni; W. Bonivento; L. Carminati; D. Cavalli; G. Costa; M. Delmastro; M. Fanti; L. Mandelli; M. Mazzanti; L. Perini; S. Resconi; G. F. Tartarelli; V. Aulchenko; V. Kazanin; G. Kolachev; V. Malyshev; A. Maslennikov; G. Pospelov; R. Snopkov; A. Shousharo; A. Talyshev; Yu. Tikhonov; E. Augé; C. Bourdarios; D. Breton; P. Cros; C. de La Taille; I. Falleau; D. Fournier; G. Guilhem; S. Hassani; Y. Jacquier; K. Kordas; G. Macé; B. Merkel; J. M. Noppe; G. Parrour; P. Pétroff; P. Puzo; J. P. Richer; D. Rousseau; N. Seguin-Moreau; L. Serin; V. Tocut; J. J. Veillet; D. Zerwas; F. Astesan; W. Bertoli; A. Camard; B. Canton; S. Fichet; F. Hubaut; D. Imbault; D. Lacour; B. Laforge; O. Le Dortz; D. Martin; I. Nikolic-Audit; F. Orsini; F. Rossel; P. Schwemling; W. Cleland; J. McDonald; E. M. Abouelouafa; A. Ben Mansour; R. Cherkaoui; Y. El Mouahhidi; H. Ghazlane; A. Idrissi; J. Belorgey; R. Bernard; M. Chalifour; A. Le Coroller; J. Ernwein; B. Mansoulié; J. F. Renardy; J. Schwindling; J.-P. Taguet; J. Teiger; C. Clément; B. Lund-Jensen; J. Lundqvist; L. Megner; M. Pearce; S. Rydstrom; J. Egdemir; R. Engelmann; J. Hoffman; R. McCarthy; M. Rijssenbeek; J. Steffens

2003-01-01

418

Calibration and reconstruction performances of the KLOE electromagnetic calorimeter  

Microsoft Academic Search

The main aim of the KLOE experiment at DA?NE, the Frascati ?-factory, is to study CP violation in the K0–K?0 system. Requirements on shower detection are very stringent. An hermetic, lead-scintillating fiber sampling calorimeter has been chosen and built. A review of the methods used to calibrate and reconstruct energy and timing is reported in this paper. Emphasis is given

M. Adinolfi; A. Aloisio; F. Ambrosino; A. Andryakov; A. Antonelli; M. Antonelli; F. Anulli; C. Bacci; A. Bankamp; G. Barbiellini; F. Bellini; G. Bencivenni; S. Bertolucci; C. Bini; C. Bloise; V. Bocci; F. Bossi; P. Branchini; S. A. Bulychjov; G. Cabibbo; A. Calcaterra; R. Caloi; P. Campana; G. Capon; G. Carboni; A. Cardini; M. Casarsa; G. Cataldi; F. Ceradini; F. Cervelli; F. Cevenini; G. Chiefari; P. Ciambrone; S. Conetti; S. Conticelli; E. De Lucia; G. De Robertis; R. De Sangro; P. De Simone; G. De Zorzi; S. Dell'Agnello; A. Denig; A. Di Domenico; C. Di Donato; S. Di Falco; A. Doria; E. Drago; V. Elia; O. Erriquez; A. Farilla; G. Felici; A. Ferrari; M. L. Ferrer; G. Finocchiaro; C. Forti; A. Franceschi; P. Franzini; M. L. Gao; C. Gatti; P. Gauzzi; S. Giovannella; V. Golovatyuk; E. Gorini; F. Grancagnolo; W. Grandegger; E. Graziani; P. Guarnaccia; U. V. Hagel; H. G. Han; S. W. Han; X. Huang; M. Incagli; L. Ingrosso; Y. Y. Jang; W. Kim; W. Kluge; V. Kulikov; F. Lacava; G. Lanfranchi; J. Lee-Franzini; F. Lomtadze; C. Luisi; C. S. Mao; M. Martemianov; M. Matsyuk; W. Mei; L. Merola; R. Messi; S. Miscetti; A. Moalem; S. Moccia; M. Moulson; S. Mueller; F. Murtas; M. Napolitano; A. Nedosekin; M. Panareo; L. Pacciani; P. Pagès; M. Palutan; L. Paoluzi; E. Pasqualucci; L. Passalacqua; M. Passaseo; A. Passeri; V. Patera; E. Petrolo; G. Petrucci; D. Picca; G. Pirozzi; C. Pistillo; M. Pollack; L. Pontecorvo; M. Primavera; F. Ruggieri; P. Santangelo; E. Santovetti; G. Saracino; R. D. Schamberger; C. Schwick; B. Sciascia; A. Sciubba; F. Scuri; I. Sfiligoi; J. Shan; P. Silano; T. Spadaro; S. Spagnolo; E. Spiriti; C. Stanescu; G. L. Tong; L. Tortora; E. Valente; P. Valente; B. Valeriani; G. Venanzoni; S. Veneziano; Y. Wu; Y. G. Xie; P. P. Zhao; Y. Zhou

2001-01-01

419

A Silicon / Tungsten Electromagnetic Calorimeter with Integrated Electronics  

SciTech Connect

We discuss progress and issues relevant to the design of a highly segmented silicon-tungsten electromagnetic calorimeter. Our design features a complete readout chip which is integrated onto each detector wafer, thus reducing the effective channel count by a factor of about 1000. We apply this design to the SD detector of the American LC Physics Group, but some elements could be applicable elsewhere.

Frey, R

2004-12-16

420

CMD3 liquid xenon calorimeter's signals processing for timing measurements  

Microsoft Academic Search

One of the goals of the Cryogenic Magnetic Detector (CMD-3) experiment (Budker Institute of Nuclear Physics, Novosibirsk, Russia) is a study of the nucleon birth reactions near threshold in electron-positron annihilation. An important example of such process is a neutron-antineutron pair production. A signature of this process is a large energy deposition in the liquid xenon (LXe) -calorimeter due to

L. B. Epshteyn; Yu. V. Yudin

2011-01-01

421

Design and performance of the ASP lead-glass calorimeter  

Microsoft Academic Search

The design of the ASP detector is described and details of the construction and performance of the lead-glass tracking calorimeter are presented. ASP, a nonmagnetic particle detector, was used at the PEP e+e- storage ring at sqrt(s) = 29 GeV to study low-multiplicity final states consisting primarily of electrons and photons. The design utilized extruded lead-glass bars to obtain a

G. T. Bartha; D. L. Burke; P. Extermann; P. H. Garbincius; C. A. Hawkins; M. J. Jonker; L. Keller; C. Matteuzzi; N. A. Roe; T. R. Steele; A. S. Johnson; J. S. Whitaker; R. J. Wilson; C. Hearty; J. E. Rothberg; K. K. Young; R. J. Hollebeek

1989-01-01

422

After-burning of nitropenta products in a calorimeter  

SciTech Connect

Explored here are the ''after-burning'' effects for explosions of Nitropenta (NP) charges in air. Detonation of the charge transforms the solid explosive ( C HNO 5 8412 , also known as PETN) into gaseous products that are rich in carbon and CO, which subsequently act as a fuel. When these hot ({approximately}3500 K) gases mix with air, rapid combustion (after-burning) takes place. The dynamics of this exothermic process was studied in ''pressure calorimeter'' experiments performed at EMI.

Kuhl, A L; Neuwald, P; Reichenbach, H

1999-06-18

423

Design of a microwave calorimeter for the microwave tokamak experiment  

SciTech Connect

The initial design of a microwave calorimeter for the Microwave Tokamak Experiment is presented. The design is optimized to measure the refraction and absorption of millimeter rf microwaves as they traverse the toroidal plasma of the Alcator C tokamak. Techniques utilized can be adapted for use in measuring high intensity pulsed output from a microwave device in an environment of ultra high vacuum, intense fields of ionizing and non-ionizing radiation and intense magnetic fields. 16 refs.

Marinak, M. (California Univ., Berkeley, CA (USA))

1988-10-07

424

Calibration and Characterization of the Small Sample Calorimeter  

SciTech Connect

An early component of the Joint Fuel Cycle Study (JFCS) between the United States and the Republic of Korea is a test of gram scale electrochemical recycling of spent fuel which is to be performed at Idaho National Laboratory (INL). Included in this test is the development of Nondestructive Assay (NDA) technologies that would be applicable for International Atomic Energy Agency (IAEA) safeguards of the electrochemical recycling process. Of upmost importance to safeguarding the fuel cycle associated with the electrochemical recycling process is the ability to safeguard the U/TRU ingots that will be produced in the process. For the gram scale test, the ingots that will be produced will have an expected thermal power of approximately 130 mW. To ascertain how well the calorimetric assay NDA technique can perform in assaying these ingots, Los Alamos National Laboratory (LANL) has characterized and calibrated a small solid-state calorimeter called the Small Sample Calorimeter (SSC3) to perform these measurements at LANL. To calibrate and characterize the SSC3, a series of measurements were performed using certified {sup 238}Pu heat standards whose power output is traceable back to the National Institute of Standards and Technology (NIST) electrical standards. The results of these measurements helped establish both the calibration of the calorimeter as well as the expected performance of the calorimeter in terms of its accuracy and precision as a function of thermal power of the item that is being measured. In this report, we will describe the measurements that were performed and provide a discussion of the results of these measurements.

Santi, Peter A. [Los Alamos National Laboratory; Perry, Katherine A. [Los Alamos National Laboratory

2012-08-13

425

Technical Design Report for PANDA Electromagnetic Calorimeter (EMC)  

E-print Network

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment, which is being developed for the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface.

PANDA Collaboration; W. Erni; I. Keshelashvili; B. Krusche; M. Steinacher; Y. Heng; Z. Liu; H. Liu; X. Shen; O. Wang; H. Xu; J. Becker; F. Feldbauer; F. -H. Heinsius; T. Held; H. Koch; B. Kopf; M. Pelizaeus; T. Schroeder; M. Steinke; U. Wiedner; J. Zhong; A. Bianconi; M. Bragadireanu; D. Pantea; A. Tudorache; V. Tudorache; M. De Napoli; F. Giacoppo; G. Raciti; E. Rapisarda; C. Sfienti; E. Bialkowski; A. Budzanowski; B. Czech; M. Kistryn; S. Kliczewski; A. Kozela; P. Kulessa; K. Pysz; W. Schaefer; R. Siudak; A. Szczurek; W. Czy. zycki; M. Domagala; M. Hawryluk; E. Lisowski; F. Lisowski; L. Wojnar; D. Gil; P. Hawranek; B. Kamys; St. Kistryn; K. Korcyl; W. Krzemien; A. Magiera; P. Moskal; Z. Rudy; P. Salabura; J. Smyrski; A. Wronska; M. Al-Turany; I. Augustin; H. Deppe; H. Flemming; J. Gerl; K. Goetzen; R. Hohler; D. Lehmann; B. Lewandowski; J. Luehning; F. Maas; D. Mishra; H. Orth; K. Peters; T. Saito; G. Schepers; C. J. Schmidt; L. Schmitt; C. Schwarz; B. Voss; P. Wieczorek; A. Wilms; K. -T. Brinkmann; H. Freiesleben; R. Jaekel; R. Kliemt; T. Wuerschig; H. -G. Zaunick; V. M. Abazov; G. Alexeev; A. Arefiev; V. I. Astakhov; M. Yu. Barabanov; B. V. Batyunya; Yu. I. Davydov; V. Kh. Dodokhov; A. A. Efremov; A. G. Fedunov; A. A. Feshchenko; A. S. Galoyan; S. Grigoryan; A. Karmokov; E. K. Koshurnikov; V. Ch. Kudaev; V. I. Lobanov; Yu. Yu. Lobanov; A. F. Makarov; L. V. Malinina; V. L. Malyshev; G. A. Mustafaev; A. Olshevski; M. A. . Pasyuk; E. A. Perevalova; A. A. Piskun; T. A. Pocheptsov; G. Pontecorvo; V. K. Rodionov; Yu. N. Rogov; R. A. Salmin; A. G. Samartsev; M. G. Sapozhnikov; A. Shabratova; G. S. Shabratova; A. N. Skachkova; N. B. Skachkov; E. A. Strokovsky; M. K. Suleimanov; R. Sh. Teshev; V. V. Tokmenin; V. V. Uzhinsky; A. S. Vodopianov; S. A. Zaporozhets; N. I. Zhuravlev; A. G. Zorin; D. Branford; K. Foehl; D. Glazier; D. Watts; P. Woods; W. Eyrich; A. Lehmann; A. Teufel; S. Dobbs; Z. Metreveli; K. Seth; B. Tann; A. Tomaradze; D. Bettoni; V. Carassiti; A. Cecchi; P. Dalpiaz; E. Fioravanti; I. Garzia; M. Negrini; M. Savri`e; G. Stancari; B. Dulach; P. Gianotti; C. Guaraldo; V. Lucherini; E. Pace; A. Bersani; M. Macri; M. Marinelli; R. F. Parodi; I. Brodski; W. Doering; P. Drexler; M. Dueren; Z. Gagyi-Palffy; A. Hayrapetyan; M. Kotulla; W. Kuehn; S. Lange; M. Liu; V. Metag; M. Nanova; R. Novotny; C. Salz; J. Schneider; P. Schoenmeier; R. Schubert; S. Spataro; H. Stenzel; C. Strackbein; M. Thiel; U. Thoering; S. Yang; T. Clarkson; E. Cowie; E. Downie; G. Hill; M. Hoek; D. Ireland; R. Kaiser; T. Keri; I. Lehmann; K. Livingston; S. Lumsden; D. MacGregor; B. McKinnon; M. Murray; D. Protopopescu; G. Rosner; B. Seitz; G. Yang; M. Babai; A. K. Biegun; A. Bubak; E. Guliyev; V. S. Jothi; M. Kavatsyuk; H. Loehner; J. Messchendorp; H. Smit; J. C. van der Weele; F. Garcia; D. -O. Riska; M. Buescher; R. Dosdall; R. Dzhygadlo; A. Gillitzer; D. Grunwald; V. Jha; G. Kemmerling; H. Kleines; A. Lehrach; R. Maier; M. Mertens; H. Ohm; D. Prasuhn; T. Randriamalala; J. Ritman; M. Roeder; T. Stockmanns; P. Wintz; P. Wuestner; J. Kisiel; S. Li; Z. Li; Z. Sun; H. Xu; S. Fissum; K. Hansen; L. Isaksson; M. Lundin; B. Schroeder; P. Achenbach; M. C. Mora Espi; J. Pochodzalla; S. Sanchez; A. Sanchez-Lorente; V. I. Dormenev; A. A. Fedorov; M. V. Korzhik; O. V. Missevitch; V. Balanutsa; V. Chernetsky; A. Demekhin; A. Dolgolenko; P. Fedorets; A. Gerasimov; V. Goryachev; A. Boukharov; O. Malyshev; I. Marishev; A. Semenov; C. Hoeppner; B. Ketzer; I. Konorov; A. Mann; S. Neubert; S. Paul; Q. Weitzel; A. Khoukaz; T. Rausmann; A. Taeschner; J. Wessels; R. Varma; E. Baldin; K. Kotov; S. Peleganchuk; Yu. Tikhonov; J. Boucher; T. Hennino; R. Kunne; S. Ong; J. Pouthas; B. Ramstein; P. Rosier; M. Sudol; J. Van de Wiele; T. Zerguerras; K. Dmowski; R. Korzeniewski; D. Przemyslaw; B. Slowinski; G. Boca; A. Braghieri; S. Costanza; A. Fontana; P. Genova; L. Lavezzi; P. Montagna; A. Rotondi; N. I. Belikov; A. M. Davidenko; A. A. Derevschikov; Y. M. Goncharenko; V. N. Grishin; V. A. Kachanov; D. A. Konstantinov; V. A. Kormilitsin; V. I. Kravtsov; Y. A. Matulenko; Y. M. Melnik; A. P. Meschanin; N. G. Minaev; V. V. Mochalov; D. A. Morozov; L. V. Nogach; S. B. Nurushev; A. V. Ryazantsev; P. A. Semenov; L. F. Soloviev; A. V. Uzunian; A. N. Vasiliev; A. E. Yakutin; T. Baeck; B. Cederwall; C. Bargholtz; L. Geren; P. E. Tegner; S. Belostotski; G. Gavrilov; A. Itzotov; A. Kisselev; P. Kravchenko; S. Manaenkov; O. Miklukho; Y. Naryshkin; D. Veretennikov; V. Vikhrov; A. Zhadanov; L. Fava; D. Panzieri; D. Alberto; A. Amoroso; E. Botta; T. Bressani; S. Bufalino; M. P. Bussa; L. Busso; F. De Mori; M. Destefanis; L. Ferrero; A. Grasso; M. Greco; T. Kugathasan; M. Maggiora; S. Marcello; G. Serbanut; S. Sosio; R. Bertini; D. Calvo; S. Coli; P. De Remigis; A. Feliciello; A. Filippi; G. Giraudo; G. Mazza; A. Rivetti

2008-10-07

426

Characterizing Flammability of Corrugated Cardboard Using a Cone Calorimeter  

Microsoft Academic Search

In warehouse storage applications, it is important to classify the burning of cardboard because it provides a source of flaming combustion and is usually the first item to ignite and sustain flame spread. This study develops a methodology to obtain a non-dimensional mass transfer number (or Spalding's B-number) by using the mass loss measurements from a cone calorimeter. The small-scale

K. J. Overholt; M. J. Gollner; A. S. Rangwala

427

A new hadron spectroscopy  

NASA Astrophysics Data System (ADS)

QCD-motivated models for hadrons predict an assortment of "exotic" hadrons that have structures that are more complex than the quark-antiquark mesons and three-quark baryons of the original quark-parton model. These include pentaquark baryons, the six-quark H-dibaryon, and tetraquark, hybrid and glueball mesons. Despite extensive experimental searches, no unambiguous candidates for any of these exotic configurations have been identified. On the other hand, a number of meson states, one that seems to be a proton-antiproton bound state, and others that contain either charmed-anticharmed quark pairs or bottom-antibottom quark pairs, have been recently discovered that neither fit into the quark-antiquark meson picture nor match the expected properties of the QCD-inspired exotics. Here I briefly review results from a recent search for the H-dibaryon, and discuss some properties of the newly discovered states -the proton-antiproton state and the so-called XY Z mesons- and compare them with expectations for conventional quark-antiquark mesons and the predicted QCD-exotic states.

Olsen, Stephen Lars

2014-11-01

428

Assessment of Uncertainties in Calibration of Langavant Calorimeters  

NASA Astrophysics Data System (ADS)

The semi-adiabatic method, commonly referred to as the Langavant method, is widely applied for routine measurements of the hydration heat of cements. This standardized method is applicable to all cements and hydraulic binders, whatever their chemical composition, with the exception of quick-setting cements. The calorimeters used to perform these hydration heat measurements must be previously calibrated by electrical substitution, in order to determine their coefficient of total heat loss and their heat capacity . LNE developed a facility enabling performance of the calibration of these Langavant calorimeters, in order to insure the traceability of the hydration heat measurements to basic quantities such as temperature, time, mass, and electrical quantities. Calibration results of a typical Langavant calorimeter are presented here. The measurement uncertainties of the parameters and have been assessed according to the ISO/BIPM "Guide to the Expression of Uncertainty in Measurement." The relative expanded uncertainties () of the coefficient of total heat loss and the heat capacity are estimated, respectively, to be about 0.7 % and 15 %.

Hay, Bruno; Hameury, Jacques; Davee, Guillaume; Grelard, Marc

2014-10-01

429

The Design of a Calorimeter to Measure Concentrated Solar Flux  

NASA Astrophysics Data System (ADS)

A water-cooled, cavity calorimeter was designed to accurately measure concentrated solar thermal power produced by the University of Minnesota's solar simulator. The cavity is comprised of copper tubing bent into spiral and helical coils for the base and cylindrical walls, respectively. Insulation surrounds the cavity to reduce heat transfer to the ambient, and a water- cooled aperture cover is positioned at the open end of the cavity. The calorimeter measures the heat gain of water flowing through the system as radiant energy is passed through the aperture. Chilled water flows through the tubing, and the energy incident on the cavity surface is conducted through the wall and convected to the flowing water. The energy increase in the water can be observed by an increase in fluid temperature. A Monte Carlo ray tracing method is used to predict the incident flux distribution and corresponding power on the surfaces of the cavity. These values are used to estimate the thermal losses of the system, and it is found that they account for less that 1% of the total power passed through the aperture. The overall uncertainty of the calorimeter is found by summing the measured uncertainty and the estimated heat loss and is found to be +/-2.5% for 9.2 kW of power output and +/-3.4% for 3 kW.

Sefkow, Elizabeth Anne Bennett

430

The calorimeter project for the Mu2e experiment  

NASA Astrophysics Data System (ADS)

The Mu2e experiment at Fermilab aims to measure the charged lepton flavor violating neutrinoless conversion of a negative muon into an electron. The conversion results in a monochromatic electron with an energy slightly below the rest mass of the muon (104.97 MeV). We expect to set a limit of ? 6×10 -17 at 90% CL in three years of running, using an intense and clean pulsed ?- beam providing ? 10 18 stopped muons on target in three years of running. The experiment performs a strong suppression of potential background by gating off the prompts and performing precise momentum determination in conjunction with an highly efficient cosmic veto. The calorimeter should confirm that the candidates reconstructed by the tracker system are indeed conversion electrons and provide an independent trigger (or event reduction filter) for the experiment. It should also provide standalone muon to electron rejection. Moreover, it must be able to keep functionality in a high radiation dose environment inside a 10 -4 torr vacuum enclosure and in a presence of 1 T axial magnetic field. In order to accomplish all these tasks, a LYSO crystals calorimeter has been chosen. We show the proposed design and the experimental results obtained by exposing a small size calorimeter prototype to a tagged photon beam from 40 to 300 MeV at the A2 photon facility of the Mainz Microton (MAMI), Germany.

Budagov, J.; Carosi, R.; Cervelli, F.; Cheng, C.; Cordelli, M.; Davydov, Yu.; Downie, E. J.; Echenard, B.; Giovannella, S.; Glagolev, V.; Happacher, F.; Hitlin, D.; Lucà, A.; Miscetti, S.; Ongmonkolkul, P.; Onorato, G.; Otte, P.; Pezzullo, G.; Pileggi, G.; Porter, F.; Saputi, A.; Sarra, I.; Tassielli, G.; Thomas, A.

2013-08-01

431

A Vision of Hadronic Physics  

E-print Network

We present a vision for the next decade of hadron physics in which the central question being addressed is how one might win new physical insight into the way hadronic systems work. The topics addressed include the relevance of model building, the role of spontaneously broken chiral symmetry, spectroscopy, form factors and physics in the deep inelastic regime.

A. W. Thomas

2014-04-04

432

Precision closed bomb calorimeter for testing flame and gas producing initiators  

NASA Technical Reports Server (NTRS)

A calorimeter has been developed under this study to help meet the needs of accurate performance monitoring of electrically or mechanically actuated flame and gas producing devices, such as squib-type initiators. A ten cubic centimeter closed bomb (closed volume) calorimeter was designed to provide a standard pressure trace and to measure a nominal 50 calorie output, using the basic components of a Parr Model 1411 calorimeter. Two prototype bombs were fabricated, pressure tested to 2600 psi, and extensively evaluated.

Carpenter, D. R., Jr.; Taylor, A. C., Jr.

1972-01-01

433

Ballistic performance of polyurea-coated armor grade ceramic tiles  

NASA Astrophysics Data System (ADS)

The use of ceramics as energy absorbents has been studied by many researchers and some improvements in the ballistic performance of ceramic tiles have been made by coating them with different classes of materials (e.g. E-glass/epoxy, carbon-fiber/epoxy, etc.). Using ceramics for energy absorbing applications leads to a significant weight reduction of the system. Therefore, any modification to the ceramic configuration in the system which leads to more energy absorption with the same or less areal density is significant. On the other hand, polyurea has been proved to be an excellent energy dissipating agent in many applications. Inspired by this, we are studying the effect of coating ceramics with polyurea and other materials, on the energy absorption and ballistic performance of the resulting ceramic-based composites. In this study, we investigate the effect of polyurea on ballistic efficiency of ceramic tiles. To this end, we have performed a set of penetration tests on polyurea-ceramic composites. In our experiments, a high velocity projectile is propelled to impact and perforate the ceramic-polyurea composite. The velocity and mass of the projectile are measured before and after the penetration. The change in the kinetic energy of the projectile is evaluated and compared for different polyurea-ceramic configurations (e.g., polyurea on front face, polyurea on back face, polyurea between two ceramic tiles, etc.). The experimental results suggest that polyurea is not as effective as other restraining materials such as E-glass/epoxy and carbon-fiber/epoxy.

Samiee, Ahsan; Isaacs, Jon; Nemat-Nasser, Sia

2010-04-01

434

Hadronic versus partonic J /? production in the statistical hadronization model  

NASA Astrophysics Data System (ADS)

Assuming the statistical hadronization model and charm flavor conservation, one can quantify the deviation of charm and anticharm quarks from chemical equilibrium both in the hadronic phase and in the quark-gluon plasma. By linking the hadronic fireball volume and the corresponding plasma source volume via entropy conservation as proposed earlier [L. Grandchamp, R. Rapp, and G. E. Brown, Phys. Rev. Lett. 92, 212301 (2004), 10.1103/PhysRevLett.92.212301], a direct comparison between the J /? yields in both pictures can be used to obtain limits for the charm quark mass in the deconfined medium.

Bahavar, Philipp B.; Uphoff, Jan; Greiner, Carsten

2014-12-01

435

Shake table testing of structural clay tile infilled frames  

SciTech Connect

Two steel frames with structural clay tile infills were tested under simulated seismic loads in both the out-of-plane and in-plane direction. Out-of-plane testing showed that infill panels separate from their bounding frame, and respond at their own natural frequency during a seismic excitation. Due to arching, the panels remain stable. In-plane seismic testing showed similar behavior patterns to previous static testing. The natural frequency was adequately predicted using a piecewise linear equivalent strut analytical method. The structure was then subjected to over one thousand cycles of loading using a sine sweep before failure.

Bennett, R.M. [Univ. of Tennessee, Knoxville, TN (United States); Fowler, J.J. [Carpenter Wright Engineers, Knoxville, TN (United States); Flanagan, R.D. [Lockheed Martin, Oak Ridge, TN (United States)

1996-03-08

436

A novel approach of preparing press-powders for cleaner production of ceramic tiles  

Microsoft Academic Search

China produces almost half of ceramic tiles in the world. However, serious air pollution and high energy consumption in the preparation of ceramic press-powders by traditional wet process (WP) have become major barriers for the sustainable development of ceramic tile manufacturing industry. A novel cleaner production process, named by the authors as Droplet-Powder Granulation Process (DPGP), was proposed and tested

Zhu Shu; Jun Zhou; Yanxin Wang

2010-01-01

437

Magnetic Field Created by Tile Permanent R. Ravaud, G. Lemarquand, V. Lemarquand  

E-print Network

1 Magnetic Field Created by Tile Permanent Magnets R. Ravaud, G. Lemarquand, V. Lemarquand Abstract1 This paper presents the analytical calculation of the three components of the magnetic field created by2 tile permanent magnets whose magnetization is either radial or axial. The calculations

Boyer, Edmond

438

Preferential flow estimates to an agricultural tile drain with implications for glyphosate transport  

USGS Publications Warehouse

Agricultural subsurface drains, commonly referred to as tile drains, are potentially significant pathways for the movement of fertilizers and pesticides to streams and ditches in much of the Midwest. Preferential flow in the unsaturated zone provides a route for water and solutes to bypass the soil matrix and reach tile drains faster than predicted by traditional displacement theory. This paper uses chloride concentrations to estimate preferential flow contributions to a tile drain during two storms in May 2004. Chloride, a conservative anion, was selected as the tracer because of differences in chloride concentrations between the two sources of water to the tile drain, preferential and matrix flow. A strong correlation between specific conductance and chloride concentration provided a mechanism to estimate chloride concentrations in the tile drain throughout the storm hydrographs. A simple mixing analysis was used to identify the preferential flow component of the storm hydrograph. During two storms, preferential flow contributed 11 and 51% of total storm tile drain flow; the peak contributions, 40 and 81%, coincided with the peak tile drain flow. Positive relations between glyphosate [N-(phosphonomethyl)glycine] concentrations and preferential flow for the two storms suggest that preferential flow is an important transport pathway to the tile drain. ?? ASA, CSSA, SSSA.

Stone, W.W.; Wilson, J.T.

2006-01-01

439

Reuse of solid petroleum waste in the manufacture of porcelain stoneware tile.  

PubMed

This study investigates the incorporation of solid petroleum waste as raw material into a porcelain stoneware tile body, in replacement to natural kaolin material by up to 5 wt.%. Tile formulations containing solid petroleum waste were pressed and fired at 1240 °C by using a fast-firing cycle. The tile pieces were tested to determine their properties (linear shrinkage, water absorption, apparent density, and flexural strength), sintered microstructure, and leaching toxicity. The results therefore indicated that the growing addition of solid petroleum waste into tile formulations leads to a decrease of linear shrinkage, apparent density, and flexural strength, and to an increase of water absorption of the produced tile materials. It was also found that the replacement of kaolin with solid petroleum waste, in the range up to 2.5 wt.%, allows the production of porcelain stoneware tile (group BIa, ISO 13006 standard). All concentrations of Ag, As, Ba, Cd, Cr (total), Hg, and Pb of the fired porcelain stoneware tile pieces in the leachate comply with the current regulatory limits. These results indicate that the solid petroleum waste could be used for high-quality porcelain stoneware tile production, thus giving rise to a new possibility for an environmentally friendly management of this abundant waste. PMID:23454372

Pinheiro, B C A; Holanda, J N F

2013-03-30

440

The influence of compound additive on magnesium oxychloride cement\\/urban refuse floor tile  

Microsoft Academic Search

The magnesium oxychloride cement floor tile was produced by using magnesium oxychloride cement and urban refuse. In order to improve the physical performances of the magnesium oxychloride cement floor tile, phosphate, stearic acid–styrene acrylic acids copolymer emulsion were adopted. It was educed that the compound additive could reduce the water-absorption and warp distortion, improve intenerating coefficient, and greatly ameliorate the

Jianquan Li; Guozhong Li; Yanzhen Yu

2008-01-01

441

Effect of strain isolator pad modulus on inplane strain in Shuttle Orbiter thermal protection system tiles  

NASA Technical Reports Server (NTRS)

The thermal protection system used on the Space Shuttle orbiter to determine strains in the reusable surface insulation tiles under simulated flight loads was investigated. The effects of changes in the strain isolator pad (SIP) moduli on the strains in the tile were evaluated. To analyze the SIP/tile system, it was necessary to conduct tests to determine inplane tension and compression modulus and inplane failure strain for the densified layer of the tiles. It is shown that densification of the LI-900 tile material increases the modulus by a factor of 6 to 10 and reduces the failure strain by about 50%. It is indicated that the inplane strain levels in the Shuttle tiles in the highly loaded regions are approximately 2 orders of magnitude lower than the failure strain of the material. It is concluded that most of the LI-900 tiles on the Shuttle could be mounted on a SIP with tensile and shear stiffnesses 10 times those of the present SIP without inplane strain failure in the tile.

Sawyer, J. W.

1983-01-01

442

Automated 3D Damaged Cavity Model Builder for Lower Surface Acreage Tile on Orbiter  

NASA Technical Reports Server (NTRS)

The 3D Automated Thermal Tool for Damaged Acreage Tile Math Model builder was developed to perform quickly and accurately 3D thermal analyses on damaged lower surface acreage tiles and structures beneath the damaged locations on a Space Shuttle Orbiter. The 3D model builder created both TRASYS geometric math models (GMMs) and SINDA thermal math models (TMMs) to simulate an idealized damaged cavity in the damaged tile(s). The GMMs are processed in TRASYS to generate radiation conductors between the surfaces in the cavity. The radiation conductors are inserted into the TMMs, which are processed in SINDA to generate temperature histories for all of the nodes on each layer of the TMM. The invention allows a thermal analyst to create quickly and accurately a 3D model of a damaged lower surface tile on the orbiter. The 3D model builder can generate a GMM and the correspond ing TMM in one or two minutes, with the damaged cavity included in the tile material. A separate program creates a configuration file, which would take a couple of minutes to edit. This configuration file is read by the model builder program to determine the location of the damage, the correct tile type, tile thickness, structure thickness, and SIP thickness of the damage, so that the model builder program can build an accurate model at the specified location. Once the models are built, they are processed by the TRASYS and SINDA.

Belknap, Shannon; Zhang, Michael

2013-01-01

443

Tiled-Grating Compressor with Uncompensated Dispersion for Near-Field-Intensity Smoothing  

SciTech Connect

A tiled-grating compressor, in which the spatial dispersion is not completely compensated, reduces the near-field-intensity modulation caused by tiling gaps and provides near-field spatial filtering of the input laser beam, thus reducing the laser damage to the final optics.

Huang, H.; Kessler, T.J.

2007-07-02

444

Positive feedback fishery: Population consequences of `crab-tiling' on the green crab Carcinus maenas  

NASA Astrophysics Data System (ADS)

Collection of marine invertebrates for use as fishing bait is a substantial activity in many parts of the world, often with unknown ecological consequences. As new fisheries develop, it is critical for environmental managers to have high quality ecological information regarding the potential impacts, in order to develop sound management strategies. Crab-tiling is a largely unregulated and un-researched fishery, which operates commercially in the south-west UK. The target species is the green crab Carcinus maenas. Those crabs which are pre-ecdysis and have a carapace width greater than 40 mm are collected to be sold to recreational anglers as bait. Collection involves laying artificial structures on intertidal sandflats and mudflats in estuaries. Crabs use these structures as refugia and are collected during low tide. However, the effect that this fishery has on populations of C. maenas is not known. The impact of crab-tiling on C. maenas population structure was determined by sampling crabs from tiled estuaries and non-tiled estuaries using baited drop-nets. A spatially and temporarily replicated, balanced design was used to compare crab abundance, sizes and sex ratios between estuaries. Typically, fisheries are associated with a reduction in the abundance of the target species. Crab-tiling, however, significantly increased C. maenas abundance. This was thought to be a result of the extra habitat in tiled estuaries, which probably provides protection from natural predators, such as birds and fish. Although crabs were more abundant in tiled estuaries than non-tiled estuaries, the overall percentage of reproductively active crabs in non-tiled estuaries was greater than in tiled estuaries. As with most exploited fisheries stocks, crabs in exploited (tiled) estuaries tended to be smaller, with a mo