Sample records for rhic sextant commissioning

  1. RHIC BEAM ABORT KICKER POWER SUPPLY SYSTEM COMMISSIONING EXPERIENCE AND REMAINING ISSUES.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    ZHANG,W.; AHRENS,L.A.; MI,J.

    2001-06-18

    The RHIC Beam Abort Kicker Power Supply Systems commissioning experience and the remaining issues will be reported in this paper. The RHIC Blue Ring Beam Abort Kicker Power Supply System initial commissioning took place in June 1999. Its identical system in Yellow Ring was brought on line during Spring 2000. Each of the RHIC Beam Abort Kicker Power Supply Systems consists of five high voltage modulators and subsystems. These systems are critical devices for RHIC machine protection and environmental protection. They are required to be effective, reliable and operating with sufficient redundancy to safely abort the beam to its beammore » dump at the end of accumulation or at any time when they are commanded. To deflect 66 GeV ion beam to the beam absorbers, the RHIC Beam Abort Kicker Power Supply Systems were operated at 22 kV level. The RHIC 2000 commissioning run was very successful.« less

  2. Design and Operation of the RHIC 80-K Cooler

    NASA Astrophysics Data System (ADS)

    Nicoletti, A.; Reuter, A.; Sidi-Yekhlef, A.; Talty, P.; Quimby, E.

    2004-06-01

    A stand-alone cryogenic system designed to maintain the magnets of the Relativistic Heavy Ion Collider (RHIC) at between 80 and 100 K during accelerator shutdown periods has been conceived and designed at Brookhaven National Laboratory and built by PHPK Technologies of Columbus, Ohio. Since most thermal contraction occurs above this temperature, this unit, referred to as the 80-K Cooler, will eliminate the stresses associated with thermal cycling. The cooling system will provide the necessary refrigeration by circulating cooled helium gas at approximately 1500 kPA through the RHIC heat shields and magnets. This helium is cooled by heat exchange with liquid nitrogen and circulated via three cold centrifugal pumps. The nominal delivered cooling capacity required to maintain the magnets at temperature is approximately 36 kW, primarily intercepted at the heat shield. The system also has separate heat exchangers for use as a pre-cooler from room temperature to 82 K. Selection of sextant or sextants for pre-cooling is designed into the RHIC cryogenic distribution system. Topics covered include Cooler design decisions, details of the Cooler as built, integration into the existing RHIC cryogenic system and initial operating experience.

  3. Sextant X-Ray Pulsar Navigation Demonstration: Initial On-Orbit Results

    NASA Technical Reports Server (NTRS)

    Mitchell, Jason W.; Winternitz, Luke M.; Hassouneh, Munther A.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.; Ray, Paul S.; Wolff, Michael T.; Kerr, Matthew; Wood, Kent S.; hide

    2018-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission. SEXTANT will be a first demonstration of in-space, autonomous, X-ray pulsar navigation (XNAV). Navigating using millisecond X-ray pulsars which could provide a GPS-like navigation capability available throughout our Solar System and beyond. NICER is a NASA Astrophysics Explorer Mission of Opportunity to the International Space Station that was launched and installed in June of 2017. During NICER's nominal 18-month base mission, SEXTANT will perform a number of experiments to demonstrate XNAV and advance the technology on a number of fronts. In this work, we review the SEXTANT, its goals, and present early results from SEXTANT experiments conducted in the first six months of operation. With these results, SEXTANT has made significant progress toward meeting its primary and secondary mission goals. We also describe the SEXTANT flight operations, calibration activities, and initial results.

  4. X-ray Pulsar Navigation Algorithms and Testbed for SEXTANT

    NASA Technical Reports Server (NTRS)

    Winternitz, Luke M. B.; Hasouneh, Monther A.; Mitchell, Jason W.; Valdez, Jennifer E.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.; Ray, Paul S.; Wood, Kent S.; Arzoumanian, Zaven; hide

    2015-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a NASA funded technologydemonstration. SEXTANT will, for the first time, demonstrate real-time, on-board X-ray Pulsar-based Navigation (XNAV), a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond. This paper describes the basic design of the SEXTANT system with a focus on core models and algorithms, and the design and continued development of the GSFC X-ray Navigation Laboratory Testbed (GXLT) with its dynamic pulsar emulation capability. We also present early results from GXLT modeling of the combined NICER X-ray timing instrument hardware and SEXTANT flight software algorithms.

  5. SEXTANT - Station Explorer for X-ray Timing and Navigation Technology

    NASA Technical Reports Server (NTRS)

    Mitchell, Jason W.; Hasouneh, Munther Abdel Hamid; Winternitz, Luke M. B.; Valdez, Jennifer E.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.; Arzoumanian, Zaven; Ray, Paul S.; Wood, Kent S.; hide

    2015-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission, which is scheduled to launch in late 2016 and will be hosted as an externally attached payload on the International Space Station (ISS) via the ExPRESS Logistics Carrier (ELC). During NICER's 18-month baseline science mission to understand ultra-dense matter though observations of neutron stars in the soft X-ray band, SEXTANT will, for the first-time, demonstrate real-time, on-board X-ray pulsar navigation, which is a significant milestone in the quest to establish a GPS-like navigation capability that will be available throughout our Solar System and beyond. Along with NICER, SEXTANT has proceeded through Phase B, Mission Definition, and received numerous refinements in concept of operation, algorithms, flight software, ground system, and ground test capability. NICER/SEXTANT's Phase B work culminated in NASA's confirmation of NICER to Phase C, Design and Development, in March 2014. Recently, NICER/SEXTANT successfully passed its Critical Design Review and SEXTANT received continuation approval in September 2014. In this paper, we describe the X-ray pulsar navigation concept and provide a brief history of previous work, and then summarize the SEXTANT technology demonstration objective, hardware and software components, and development to date.

  6. SEXTANT - Station Explorer for X-Ray Timing and Navigation Technology

    NASA Technical Reports Server (NTRS)

    Mitchell, Jason; Hasouneh, Monther; Winternitz, Luke; Valdez, Jennifer; Price, Sam; Semper, Sean; Yu, Wayne; Gaebler, John; Ray, Paul; Wood, Kent; hide

    2015-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a NASA funded technology- demonstration. SEXTANT will, for the first time, demonstrate real-time, on-board X-ray Pulsar-based Navigation (XNAV), a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond. This paper describes the basic design of the SEXTANT system with a focus on core models and algorithms, and the design and continued development of the GSFC X-ray Navigation Laboratory Testbed (GXLT) with its dynamic pulsar emulation capability. We also present early results from GXLT modeling of the combined NICER X-ray timing instrument hardware and SEXTANT flight software algorithms.

  7. SEXTANT X-Ray Pulsar Navigation Demonstration: Flight System and Test Results

    NASA Technical Reports Server (NTRS)

    Winternitz, Luke; Mitchell, Jason W.; Hassouneh, Munther A.; Valdez, Jennifer E.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.; Ray, Paul S.; Wood, Kent S.; Arzoumanian, Zaven; hide

    2016-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission. NICER is a NASA Explorer Mission of Opportunity that will be hosted on the International Space Station (ISS). SEXTANT will, for the first time, demonstrate real-time, on-board X-ray Pulsar Navigation (XNAV), a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond. This paper gives an overview of the SEXTANT system architecture and describes progress prior to environmental testing of the NICER flight instrument. It provides descriptions and development status of the SEXTANT flight software and ground system, as well as detailed description and results from the flight software functional and performance testing within the high-fidelity Goddard Space Flight Center (GSFC) X-ray Navigation Laboratory Testbed (GXLT) software and hardware simulation environment. Hardware-in-the-loop simulation results are presented, using the engineering model of the NICER timing electronics and the GXLT pulsar simulator-the GXLT precisely controls NASA GSFC's unique Modulated X-ray Source to produce X-rays that make the NICER detector electronics appear as if they were aboard the ISS viewing a sequence of millisecond pulsars

  8. SEXTANT X-Ray Pulsar Navigation Demonstration: Flight System and Test Results

    NASA Technical Reports Server (NTRS)

    Winternitz, Luke M. B.; Mitchell, Jason W.; Hassouneh, Munther A.; Valdez, Jennifer E.; Price, Samuel R.; Semper, Sean R.; Yu, Wayne H.; Ray, Paul S.; Wood, Kent S.; Arzoumanian, Zaven; hide

    2016-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission. NICER is a NASA Explorer Mission of Opportunity that will be hosted on the International Space Station (ISS). SEXTANT will, for the first time, demonstrate real-time, on-board X-ray Pulsar Navigation (XNAV), a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond. This paper gives an overview of the SEXTANT system architecture and describes progress prior to environmental testing of the NICER flight instrument. It provides descriptions and development status of the SEXTANT flight software and ground system, as well as detailed description and results from the flight software functional and performance testing within the highfidelity Goddard Space Flight Center (GSFC) X-ray Navigation Laboratory Testbed (GXLT) software and hardware simulation environment. Hardware-in-the-loop simulation results are presented, using the engineering model of the NICER timing electronics and the GXLT pulsar simulator-the GXLT precisely controls NASA GSFC's unique Modulated X-ray Source to produce X-rays that make the NICER detector electronics appear as if they were aboard the ISS viewing a sequence of millisecond pulsars.

  9. Ability of sextant biopsies to predict radical prostatectomy stage.

    PubMed

    Wills, M L; Sauvageot, J; Partin, A W; Gurganus, R; Epstein, J I

    1998-05-01

    There are few studies evaluating multiple variables on sextant biopsies with the intent to predict stage in radical prostatectomy specimens. We studied 113 sextant biopsies with corresponding totally submitted radical prostatectomy specimens. Variables evaluated on sextant biopsies included total length and percent of cancer; maximum length and percent of cancer on one core; location (apex, mid, base); bilaterality; Gleason grade; number of cores involved; serum prostate-specific antigen (PSA) level; and serum PSA density (PSAD). Radical prostatectomy stage was classified as organ versus non-organ confined. The following variables individually correlated with radical prostatectomy stage: total cancer measured in millimeters (P <0.0001) or percent (P <0.0005); biopsy Gleason score (P <0.0001); number of involved cores (P <0.0001); maximum cancer on one core measured in millimeters (P = 0.0001); maximum percent of cancer on one core (P = 0.01); bilaterality (P = 0.01); PSA level (P = 0.03), and PSAD (P = 0.001). The most predictive sets of two variables that correlated with stage included high Gleason score (P <0.0001) combined with numbers of cores involved (P = 0.002). When biopsies had Gleason scores of 6 or less, two or fewer positive cores, and serum PSA of 0 to 4 ng/mL, 89% were organ confined. When biopsies had Gleason scores of 6 or less with two unilaterally positive cores, 87% were organ confined. In biopsies with Gleason scores of 7 or more and more than one positive core, only 10% were organ confined. The most important predictors of stage by sextant needle biopsy evaluation are numbers of cores involved with carcinoma and high Gleason score. Bilaterality and serum PSA values improved prediction in two small subgroups. In 37% of our population we were able to predict with a greater than 87% probability the organ-confined versus non-organ-confined status.

  10. MeRHIC - staging approach to eRHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Ptitsyn,V.; Beebe-Wang, J.; Ben-Zvi, I.

    Design of a medium energy electron-ion collider (MeRHIC) is under development at the Collider-Accelerator Department at BNL. The design envisions construction of a 4 GeV electron accelerator in a local area inside and near the RHIC tunnel. Electrons will be produced by a polarized electron source and accelerated in energy recovery linacs. Collisions of the electron beam with 100 GeV/u heavy ions or with 250 GeV polarized protons will be arranged in the existing IP2 interaction region of RHIC. The luminosity of electron-proton collisions at the 10{sup 32} cm{sup -2}s{sup -1} level will be achieved with 50 mA CW electronmore » current and presently available proton beam parameters. Efficient proton beam cooling at collision energy may bring the luminosity to 10{sup 33} cm{sup -2}s{sup -1}. An important feature of MeRHIC is that it serves as a first stage of eRHIC, a future electron-ion collider at BNL with both higher luminosity and energy reach. The majority of MeRHIC accelerator components will be used in eRHIC.« less

  11. Proceedings of RIKEN BNL Research Center workwhop on RHIC spin

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    SOFFER,J.

    1999-10-06

    This RHIC Spin Workshop is the 1999 annual meeting of the RHIC Spin Collaboration, and the second to be hosted at Brookhaven and sponsored by the RIKEN BNL Research Center. The previous meetings were at Brookhaven (1998), Marseille (1996), MIT in 1995, Argonne 1994, Tucson in 1991, and the Polarized Collider Workshop at Penn State in 1990. As noted last year, the Center provides a home for combined work on spin by theorists, experimenters, and accelerator physicists. This proceedings, as last year, is a compilation of 1 page summaries and 5 selected transparencies for each speaker. It is designed tomore » be available soon after the workshop is completed. Speakers are welcome to include web or other references for additional material. The RHIC spin program and RHIC are rapidly becoming reality. RHIC has completed its first commissioning run, as described here by Steve Peggs. The first Siberian Snake for spin has been completed and is being installed in RHIC. A new polarized source from KEK and Triumf with over 1 milliampere of polarized H{sup minus} is being installed, described by Anatoli Zelenski. They have had a successful test of a new polarimeter for RHIC, described by Kazu Kurita and Haixin Huang. Spin commissioning is expected next spring (2000), and the first physics run for spin is anticipated for spring 2001. The purpose of the workshop is to get everyone together about once per year and discuss goals of the spin program, progress, problems, and new ideas. They also have many separate regular forums on spin. There are spin discussion sessions every Tuesday, now organized by Naohito Saito and Werner Vogelsang. The spin discussion schedule and copies of presentations are posted on http://riksg01.rhic.bnl.gov/rsc. Speakers and other spinners are encouraged to come to BNL and to lead a discussion on your favorite idea. They also have regular polarimeter and snake meetings on alternate Thursdays, led by Bill McGahern, the lead engineer for the accelerator

  12. Transverse profile of the electron beam for the RHIC electron lenses

    NASA Astrophysics Data System (ADS)

    Gu, X.; Altinbas, Z.; Costanzo, M.; Fischer, W.; Gassner, D. M.; Hock, J.; Luo, Y.; Miller, T.; Tan, Y.; Thieberger, P.; Montag, C.; Pikin, A. I.

    2015-10-01

    The transverse profile of the electron beam plays a very important role in assuring the success of the electron lens beam-beam compensation, as well as its application in space charge compensation. To compensate for the beam-beam effect in the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, we recently installed and commissioned two electron lenses. In this paper, we describe, via theory and simulations using the code Parmela, the evolution of the density of the electron beam with space charge within an electron lens from the gun to the main solenoid. Our theoretical analysis shows that the change in the beam transverse density is dominated by the effects of the space charge induced longitudinal velocity reduction, not by those of transverse Coulomb collisions. We detail the transverse profile of RHIC electron-lens beam, measured via the YAG screen and pinhole detector, and also describe its profile that we assessed from the signal of the electron-backscatter detector (eBSD) via scanning the electron beam with respect to the RHIC beam. We verified, in simulations and experiments, that the distribution of the transverse electron beam is Gaussian throughout its propagation in the RHIC electron lens.

  13. ADVANCEMENT OF THE RHIC BEAM ABORT KICKER SYSTEM.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    ZHANG,W.AHRENS,L.MI,J.OERTER,B.SANDBERG,J.WARBURTON,D.

    2003-05-12

    As one of the most critical system for RHIC operation, the beam abort kicker system has to be highly available, reliable, and stable for the entire operating range. Along with the RHIC commission and operation, consistent efforts have been spend to cope with immediate issues as well as inherited design issues. Major design changes have been implemented to achieve the higher operating voltage, longer high voltage hold-off time, fast retriggering and redundant triggering, and improved system protection, etc. Recent system test has demonstrated for the first time that both blue ring and yellow ring beam abort systems have achieved moremore » than 24 hours hold off time at desired operating voltage. In this paper, we report break down, thyratron reverse arcing, and to build a fast re-trigger system to reduce beam spreading in event of premature discharge.« less

  14. Coordinating the 2009 RHIC Run

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Brookhaven Lab - Mei Bai

    2009-04-13

    Physicists working at the Brookhaven National Lab's Relativistic Heavy Ion Collider (RHIC) are exploring the puzzle of proton spin as they begin taking data during the 2009 RHIC run. For the first time, RHIC is running at a record energy of 500 giga-elect

  15. Coordinating the 2009 RHIC Run

    ScienceCinema

    Brookhaven Lab - Mei Bai

    2017-12-09

    Physicists working at the Brookhaven National Lab's Relativistic Heavy Ion Collider (RHIC) are exploring the puzzle of proton spin as they begin taking data during the 2009 RHIC run. For the first time, RHIC is running at a record energy of 500 giga-elect

  16. RHIC - Exploring the Universe Within

    ScienceCinema

    BNL

    2017-12-09

    A guided tour of Brookhaven's Relativistic Heavy Ion Collider (RHIC) conducted by past Laboratory Director John Marburger. RHIC is a world-class scientific research facility that began operation in 2000, following 10 years of development and construction. Hundreds of physicists from around the world use RHIC to study what the universe may have looked like in the first few moments after its creation. RHIC drives two intersecting beams of gold ions head-on, in a subatomic collision. What physicists learn from these collisions may help us understand more about why the physical world works the way it does, from the smallest subatomic particles, to the largest stars.

  17. RHIC polarized proton-proton operation at 100 GeV in Run 15

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Schoefer, V.; Aschenauer, E. C.; Atoian, G.

    2015-05-03

    The first part of RHIC Run 15 consisted of ten weeks of polarized proton on proton collisions at a beam energy of 100 GeV at two interaction points. In this paper we discuss several of the upgrades to the collider complex that allowed for improved performance. The largest effort consisted in commissioning of the electron lenses, one in each ring, which are designed to compensate one of the two beam-beam interactions experienced by the proton bunches. The e-lenses raise the per bunch intensity at which luminosity becomes beam-beam limited. A new lattice was designed to create the phase advances necessarymore » for a beam-beam compensation with the e-lens, which also has an improved off-momentum dynamic aperture relative to previous runs. In order to take advantage of the new, higher intensity limit without suffering intensity driven emittance deterioration, other features were commissioned including a continuous transverse bunch-by-bunch damper in RHIC and a double harmonic RF cature scheme in the Booster. Other high intensity protections include improvements to the abort system and the installation of masks to intercept beam lost due to abort kicker pre-fires.« less

  18. A high performance DAC /DDS daughter module for the RHIC LLRF platform

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hayes, T.; Harvey, M.; Narayan, G.

    The RHIC LLRF upgrade is a flexible, modular system. Output signals are generated by a custom designed XMC card with 4 high speed digital to analog (DAC) converters interfaced to a high performance field programmable gate array (FPGA). This paper discusses the hardware details of the XMC DAC board as well as the implementation of a low noise rf synthesizer with digital IQ modulation. This synthesizer also provides injection phase cogging and frequency hop rebucketing capabilities. A new modular RHIC LLRF system was recently designed and commissioned based on custom designed XMC cards. As part of that effort a highmore » speed, four channel DAC board was designed. The board uses Maxim MAX5891 16 bit DACs with a maximum update rate of 600 Msps. Since this module is intended to be used for many different systems throughout the Collider Accelerator complex, it was designed to be as generic as possible. One major application of this DAC card is to implement digital synthesizers to provide drive signals to the various cavities at RHIC. Since RHIC is a storage ring with stores that typically last many hours, extremely low RF noise is a critical requirement. Synchrotron frequencies at RHIC range from a few hertz to several hundred hertz depending on the species and point in the acceleration cycle so close in phase noise is a major concern. The RHIC LLRF system uses the Update Link, a deterministic, high speed data link that broadcasts the revolution frequency and the synchronous phase angle. The digital synthesizers use this data to generate a properly phased analog drive signal. The synthesizers must also provide smooth phase shifts for cogging and support frequency shift rebucketing. One additional feature implemented in the FPGA is a digital waveform generator (WFG) that generates I and Q data pairs based on a user selected amplitude and phase profile as a function of time.« less

  19. Highlights from BNL and RHIC 2014

    NASA Astrophysics Data System (ADS)

    Tannenbaum, M. J.

    The following sections are included: * Introduction * News from BNL since ISSP2013 * RHIC Operations and accelerator future plans * Detector issues in A+A compared to p+p collisions * Nch, ET distributions and constituent-quarks as the fundamental elements of particle production * Collective Flow * RHIC Beam Energy Scan (BES)-in search of the critical point * Jet quenching, RHIC's main claim to fame * References

  20. Lexicon Sextant: Modeling a Mnemonic System for Customizable Browser Information Organization and Management

    ERIC Educational Resources Information Center

    Shen, Siu-Tsen

    2016-01-01

    This paper presents an ongoing study of the development of a customizable web browser information organization and management system, which the author has named Lexicon Sextant (LS). LS is a user friendly, graphical web based add-on to the latest generation of web browsers, such as Google Chrome, making it easier and more intuitive to store and…

  1. Ultimate RHIC Performance Estimates

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hahn, H.

    1986-11-10

    The RHIC performance estimates for pp operation given in the Conceptual Design report are intentionally conservative as to energy and luminosity. The ultimate RHIC performance was estimated by an ad-hoc comittee with F.Dell, H. Foelsche, H. Hahn, S.Y. Lee, G. Parzen, E. Raka, S. Tepikian, and P. Thompson as members. The present note summarizes the committee's conclusions.

  2. Configuration Manual Polarized Proton Collider at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Alekseev, I.; Allgower, C.; Bai, M.

    2006-01-01

    In this report we present our design to accelerate and store polarized protons in RHIC, with the level of polarization, luminosity, and control of systematic errors required by the approved RHIC spin physics program. We provide an overview of the physics to be studied using RHIC with polarized proton beams, and a brief description of the accelerator systems required for the project.

  3. Analysis of RHIC beam dump pre-fires

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Zhang, W.; Ahrens, L.; Fischer, W.

    2011-03-28

    It has been speculated that the beam may cause instability of the RHIC Beam Abort Kickers. In this study, we explore the available data of past beam operations, the device history of key modulator components, and the radiation patterns to examine the correlations. The RHIC beam abort kicker system was designed and built in the 90's. Over last decade, we have made many improvements to bring the RHIC beam abort kicker system to a stable operational state. However, the challenge continues. We present the analysis of the pre-fire, an unrequested discharge of kicker, issues which relates to the RHIC machinemore » safety and operational stability.« less

  4. Heavy flavor results at RHIC - A comparative overview

    DOE PAGES

    Dong, Xin

    2012-01-01

    I review the latest heavy flavor measurements at RHIC experiments. Measurements from RHIC together with preliminary results from LHC offer us an opportunity to systematically study the sQGP medium properties. In the end, I will outlook a prospective future on precision heavy flavor measurements with detector upgrades at RHIC.

  5. Hot Quark Soup Produced at RHIC

    ScienceCinema

    None

    2018-01-16

    The Relativistic Heavy Ion Collider (RHIC, http://www.bnl.gov/rhic) is a 2.4-mile-circumference particle accelerator/collider that has been operating at Brookhaven Lab since 2000, delivering collisions of heavy ions, protons, and other particles to an international team of physicists investigating the basic structure and fundamental forces of matter. In 2005, RHIC physicists announced that the matter created in RHICs most energetic collisions behaves like a nearly perfect liquid in that it has extraordinarily low viscosity, or resistance to flow. Since then, the scientists have been taking a closer look at this remarkable form of matter, which last existed some 13 billion years ago, a mere fraction of a second after the Big Bang. Scientists have revealed new findings, including the first measurement of temperature very early in the collision events, and their implications for the nature of this early-universe matter.

  6. Highlights from BNL and RHIC 2015

    NASA Astrophysics Data System (ADS)

    Tannenbaum, M. J.

    The following sections are included: * Introduction * News from BNL since ISSP2014 * RHIC Operations in 2015 and accelerator future plans * 10th Anniversary Celebration of the Perfect Liquid * RHIC Beam Energy Scan (BES) in search of a critical point-aided by Lattice QCD * References

  7. On the effects of detector solenoids on n → 0 in RHIC and eRHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Meot, Francois

    Two effects, in RHIC, from STAR solenoid and from a model of sPHENIX detector solenoid, are reviewed based on tracking simulations: a change in the stable spin precession direction n → 0 around the ring, and coupling. The method can be applied, mutatis mutandis, to eSTAR, sPHENIX and BeAST detector solenoids in A- and e-eRHIC.

  8. A Model of RHIC Using the Unified Accelerator Libraries

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Pilat, F.; Tepikian, S.; Trahern, C. G.

    1998-01-01

    The Unified Accelerator Library (UAL) is an object oriented and modular software environment for accelerator physics which comprises an accelerator object model for the description of the machine (SMF, for Standard Machine Format), a collection of Physics Libraries, and a Perl inte,face that provides a homo­geneous shell for integrating and managing these components. Currently available physics libraries include TEAPOT++, a collection of C++ physics modules conceptually derived from TEAPOT, and DNZLIB, a differential algebra package for map generation. This software environment has been used to build a flat model of RHIC which retains the hierarchical lat­tice description while assigning specificmore » characteristics to individual elements, such as measured field har­monics. A first application of the model and of the simulation capabilities of UAL has been the study of RHIC stability in the presence of siberian snakes and spin rotators. The building blocks of RHIC snakes and rotators are helical dipoles, unconventional devices that can not be modeled by traditional accelerator phys­ics codes and have been implemented in UAL as Taylor maps. Section 2 describes the RHIC data stores, Section 3 the RHIC SMF format and Section 4 the RHIC spe­cific Perl interface (RHIC Shell). Section 5 explains how the RHIC SMF and UAL have been used to study the RHIC dynamic behavior and presents detuning and dynamic aperture results. If the reader is not familiar with the motivation and characteristics of UAL, we include in the Appendix an useful overview paper. An example of a complete set of Perl Scripts for RHIC simulation can also be found in the Appendix.« less

  9. A bunch to bucket phase detector for the RHIC LLRF upgrade platform

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Smith, K.S.; Harvey, M.; Hayes, T.

    2011-03-28

    As part of the overall development effort for the RHIC LLRF Upgrade Platform [1,2,3], a generic four channel 16 bit Analog-to-Digital Converter (ADC) daughter module was developed to provide high speed, wide dynamic range digitizing and processing of signals from DC to several hundred megahertz. The first operational use of this card was to implement the bunch to bucket phase detector for the RHIC LLRF beam control feedback loops. This paper will describe the design and performance features of this daughter module as a bunch to bucket phase detector, and also provide an overview of its place within the overallmore » LLRF platform architecture as a high performance digitizer and signal processing module suitable to a variety of applications. In modern digital control and signal processing systems, ADCs provide the interface between the analog and digital signal domains. Once digitized, signals are then typically processed using algorithms implemented in field programmable gate array (FPGA) logic, general purpose processors (GPPs), digital signal processors (DSPs) or a combination of these. For the recently developed and commissioned RHIC LLRF Upgrade Platform, we've developed a four channel ADC daughter module based on the Linear Technology LTC2209 16 bit, 160 MSPS ADC and the Xilinx V5FX70T FPGA. The module is designed to be relatively generic in application, and with minimal analog filtering on board, is capable of processing signals from DC to 500 MHz or more. The module's first application was to implement the bunch to bucket phase detector (BTB-PD) for the RHIC LLRF system. The same module also provides DC digitizing of analog processed BPM signals used by the LLRF system for radial feedback.« less

  10. Experience with IBS-suppression lattice in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Litvinenko,V.N.; Luo, Y.; Ptitsyn, V.

    An intra-beam scattering (IBS) is the limiting factor of the luminosity lifetime for RHIC operating with heavy ions. In order to suppress the IBS we designed and implemented new lattice with higher betatron tunes. This lattice had been developed during last three years and had been used for gold ions in yellow ring of the RHIC during d-Au part of the RHIC Run-8. The use of this lattice allowed both significant increases in the luminosity lifetime and the luminosity levels via reduction of beta-stars in the IPS. In this paper we report on the development, the tests and the performancemore » of IBS-suppression lattice in RHIC, including the resulting increases in the peak and the average luminosity. We also report on our plans for future steps with the IBS suppression.« less

  11. IBS suppression lattice in RHIC: theory and experimental verification

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Fedotov,A.V.; Bai, M.; Bruno, D.

    Intra-beam scattering (IBS) is the limiting factor of the luminosity lifetime for Relativistic Heavy Ion Collider (RHIC) operation with heavy ions. Over the last few years the process of IBS was carefully studied in RHIC with dedicated IBS measurements and their comparison with the theoretical models. A new lattice was recently designed and implemented in RHIC to suppress transverse IBS growth, which lowered the average arc dispersion by about 20% [1]. This lattice became operational during RHIC Run-8. We review the IBS suppression mechanism, IBS measurements before and after the lattice change, and comparisons with predictions.

  12. PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP ON RHIC SPIN PHYSICS III AND IV, POLARIZED PARTONS AT HIGH Q2 REGION, AUGUST 3, 2000 AT BNL, OCTOBER 14, 2000 AT KYOTO UNIVERSITY.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    BUNCE, G.; VIGDOR, S.

    2001-03-15

    International workshop on II Polarized Partons at High Q2 region 11 was held at the Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan on October 13-14, 2000, as a satellite of the international conference ''SPIN 2000'' (Osaka, Japan, October 16-21,2000). This workshop was supported by RIKEN (The Institute of Physical and Chemical Research) and by Yukawa Institute. The scientific program was focused on the upcoming polarized collider RHIC. The workshop was also an annual meeting of RHIC Spin Collaboration (RSC). The number of participants was 55, including 28 foreign visitors and 8 foreign-resident Japanese participants, reflecting the international naturemore » of the RHIC spin program. At the workshop there were 25 oral presentations in four sessions, (1) RHIC Spin Commissioning, (2) Polarized Partons, Present and Future, (3) New Ideas on Polarization Phenomena, (4) Strategy for the Coming Spin Running. In (1) the successful polarized proton commissioning and the readiness of the accelerator for the physics program impressed us. In (2) and (3) active discussions were made on the new structure function to be firstly measured at RHIC, and several new theoretical ideas were presented. In session (4) we have established a plan for the beam time requirement toward the first collision of polarized protons. These proceedings include the transparencies presented at the workshop. The discussion on ''Strategy for the Coming Spin Running'' was summarized by the chairman of the session, S. Vigdor and G. Bunce.« less

  13. Dense matter at RHIC: Anisotropic flow

    DOE PAGES

    Voloshin, S. A.

    2005-02-01

    In this talk I discuss recent results on elliptic flow in Au+Au collisions at RHIC and how these results help us to understand the properties and evolution dynamics of the system created in such collisions. In particular, I discuss if and how the elliptic flow results obtained at RHIC indicate the system thermalization, deconfinement, and how much it tells us about the hadronization process.

  14. RHIC BPM system average orbit calculations

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Michnoff,R.; Cerniglia, P.; Degen, C.

    2009-05-04

    RHIC beam position monitor (BPM) system average orbit was originally calculated by averaging positions of 10000 consecutive turns for a single selected bunch. Known perturbations in RHIC particle trajectories, with multiple frequencies around 10 Hz, contribute to observed average orbit fluctuations. In 2006, the number of turns for average orbit calculations was made programmable; this was used to explore averaging over single periods near 10 Hz. Although this has provided an average orbit signal quality improvement, an average over many periods would further improve the accuracy of the measured closed orbit. A new continuous average orbit calculation was developed justmore » prior to the 2009 RHIC run and was made operational in March 2009. This paper discusses the new algorithm and performance with beam.« less

  15. RHIC BPM SYSTEM MODIFICATIONS AND PERFORMANCE.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    SATOGATA, T.; CALAGA, R.; CAMERON, P.

    2005-05-16

    The RHIC beam position monitor (BPM) system provides independent average orbit and turn-by-turn (TBT) position measurements. In each ring, there are 162 measurement locations per plane (horizontal and vertical) for a total of 648 BPM planes in the RHIC machine. During 2003 and 2004 shutdowns, BPM processing electronics were moved from the RHIC tunnel to controls alcoves to reduce radiation impact, and the analog signal paths of several dozen modules were modified to eliminate gain-switching relays and improve signal stability. This paper presents results of improved system performance, including stability for interaction region beam-based alignment efforts. We also summarize performancemore » of recently-added DSP profile scan capability, and improved million-turn TBT acquisition channels for 10 Hz triplet vibration, nonlinear dynamics, and echo studies.« less

  16. RHIC Renaissance Celebration

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Brookhaven Lab

    2009-07-31

    A celebration of the contribution that Renaissance Technologies, Inc., made to the Relativistic Heavy Ion Collider, during which the entire Lab community participated in a series of RHIC Renaissance events, beginning with the Roads to Discovery ceremony,

  17. Beam-beam interaction study of medium energy eRHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hao,Y.; Litvinenko, V. N.; Ptitsyn, V.

    Medium Energy eRHIC (MeRHIC), the first stage design of eRHIC, includes a multi-pass ERL that provides 4GeV high quality electron beam to collide with the ion beam of RHIC. It delivers a minimum luminosity of 10{sup 32} cm{sup -2}s{sup -1}. Beam-beam effects present one of major factors limiting the luminosity of colliders. In this paper, both beam-beam effects on the electron beam and the proton beam in MeRHIC are investigated. The beam-beam interaction can induce a head-tail type instability of the proton beam referred to as the kink instability. Thus, beam stability conditions should be established to avoid proton beammore » loss. Also, the electron beam transverse disruption by collisions has to be evaluated to ensure that the beam quality is good enough for the energy recovery pass. The relation of proton beam stability, electron disruption and consequential luminosity are carried out after thorough discussion.« less

  18. IBS simulation with different RF configurations in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Liu, C.; Fedotov, A.; Minty, M.

    It is a crucial task to understand the beam emittance growth during RHIC cycle and the underlying causes. One would benefit not just for the current operation of RHIC, also for the design of eRHIC. This report focuses on the Intra-Beam Scattering (IBS) contribution to the emittance growth of the proton beam with two different configurations of RF system. The answers to these questions will be given in the end of the report; can IBS explain the emittance growth all alone? What’s the difference of IBS growth rates for different RF configurations?

  19. eRHIC Beam Scrubbing

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Zhang, S. Y.

    We propose using beam scrubbing to mitigate the electron cloud effect in the eRHIC. The bunch number is adjusted below the heat load limit, then it increases with the reduced secondary electron yield resulted from the beam scrubbing, up to the design bunch number. Since the electron density threshold of beam instability is lower at the injection, a preliminary injection scrubbing should go first, where large chromaticity can be used to keep the beam in the ring for scrubbing. After that, the beam can be ramped to full energy, allowing physics scrubbing. Simulations demonstrated that with beam scrubbing in amore » reasonable period of time, the eRHIC baseline design is feasible.« less

  20. A critical review of RHIC experimental results

    NASA Astrophysics Data System (ADS)

    Trainor, Thomas A.

    2014-07-01

    The relativistic heavy-ion collider (RHIC) was constructed to achieve an asymptotic state of nuclear matter in heavy-ion collisions, a near-ideal gas of deconfined quarks and gluons denoted quark-gluon plasma or QGP. RHIC collisions are indeed very different from the hadronic processes observed at the Bevalac and AGS, but high-energy elementary-collision mechanisms are also non-hadronic. The two-component model (TCM) combines measured properties of elementary collisions with the Glauber eikonal model to provide an alternative asymptotic limit for A-A collisions. RHIC data have been interpreted to indicate formation of a strongly-coupled QGP (sQGP) or "perfect liquid". In this review, I consider the experimental evidence that seems to support such conclusions and alternative evidence that may conflict with those conclusions and suggest different interpretations.

  1. RHIC Prefire Protection Masks

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Drees, A.; Biscardi, C.; Curcio, T.

    2015-01-07

    The protection of the RHIC experimental detectors from damage due to beam hitting close upstream elements in cases of abort kicker prefires requires some dedicated precautionary measures with two general options: to bring the beam close to a limiting aperture (i.e. the beam pipe wall), as far upstream of the detector components as possible or, alternatively, to bring a limiting aperture close to the circulating beam. During the FY 2014 RHIC Heavy Ion run the first option was chosen because of the limited time available for preparation before the start of the run. For future runs the second option, inmore » this case the installation of dual-sided movable masks, is preferred. The installation of the masks, one per ring, is planned before the start of the FY 2015 run.« less

  2. Opportunities for Drell-Yan Physics at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Aschenauer, E.; Bland, L.; Crawford, H.

    Drell-Yan (DY) physics gives the unique opportunity to study the parton structure of nucleons in an experimentally and theoretically clean way. With the availability of polarized proton-proton collisions and asymmetric d+Au collisions at the Relativistic Heavy Ion Collider (RHIC), we have the basic (and unique in the world) tools to address several fundamental questions in QCD, including the expected gluon saturation at low partonic momenta and the universality of transverse momentum dependent parton distribution functions. A Drell-Yan program at RHIC is tied closely to the core physics questions of a possible future electron-ion collider, eRHIC. The more than 80 participantsmore » of this workshop focused on recent progress in these areas by both theory and experiment, trying to address imminent questions for the near and mid-term future.« less

  3. Improvements of the target lifetime in the RHIC polarimeter

    NASA Astrophysics Data System (ADS)

    Steski, D. B.; Huang, H.; Kewisch, J.; Sukhanova, L.; Zelenski, A.

    2018-05-01

    The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) is the only collider in the world to collide polarized protons. It is critical to the RHIC experimental program that the polarization of the proton beam is measured. This is accomplished with the Coulomb Nuclear Interference (CNI) polarimeter. The targets used in the RHIC CNI polarimeter are 50 nm thick, 25 mm long and <10 µm wide. As the beam intensity in RHIC has increased and the beam size has decreased, the lifetime of these targets has decreased dramatically. During the 2013 polarized proton experimental run, the targets needed to be replaced twice. This resulted in additional work and lost beam time. Before the 2015 experimental run, metal shields were installed around the ends of the targets which greatly improved the target lifetime. The results from the 2015 experimental run and plans for the 2017 experimental run will be discussed.

  4. Decoupling correction system in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Trbojevic, D.; Tepikian, S.; Peggs, S.

    A global linear decoupling in the Relativistic Heavy Ion Collider (RHIC) is going to be performed with the three families of skew quadrupoles. The operating horizontal and vertical betatron tunes in the RHIC will be separated by one unit [nu][sub x]=28.19 and [nu][sub y]=29.18. The linear coupling is corrected by minimizing the tune splitting [Delta][nu]-the off diagonal matrix [bold m] (defined by Edwards and Teng). The skew quadrupole correction system is located close to each of the six interaction regions. A detail study of the system is presented by the use of the TEAPOT accelerator physics code. [copyright] 1994 Americanmore » Institute of Physics« less

  5. Virtual Tour of RHIC

    ScienceCinema

    Brookhaven Lab

    2017-12-09

    An animation that follows polarized protons as they travel through the Relativistic Heavy Ion Collider (RHIC) accelerator complex to the experiments. The arrows indicate the direction of each proton's spin. The animation concludes with a fly-by of the RHI

  6. Statistical analysis of RHIC beam position monitors performance

    NASA Astrophysics Data System (ADS)

    Calaga, R.; Tomás, R.

    2004-04-01

    A detailed statistical analysis of beam position monitors (BPM) performance at RHIC is a critical factor in improving regular operations and future runs. Robust identification of malfunctioning BPMs plays an important role in any orbit or turn-by-turn analysis. Singular value decomposition and Fourier transform methods, which have evolved as powerful numerical techniques in signal processing, will aid in such identification from BPM data. This is the first attempt at RHIC to use a large set of data to statistically enhance the capability of these two techniques and determine BPM performance. A comparison from run 2003 data shows striking agreement between the two methods and hence can be used to improve BPM functioning at RHIC and possibly other accelerators.

  7. High current polarized electron source for future eRHIC

    NASA Astrophysics Data System (ADS)

    Wang, Erdong

    2018-05-01

    The high current and high bunch charge polarized electron source is essential for cost reduction of Linac-Ring (L-R) eRHIC. In the baseline design, electron beam from multiple guns (probably 4-8) will be combined using deflection plates or accumulate ring. Each gun aims to deliver electron beam with 10 mA average current and 5.3 nC bunch charge. With total 50 mA and 5.3 nC electron beam, this beam combining design could use for generating positron too. The gun has been designed, fabricated and expected to start commissioning by the mid of this year. In this paper, we will present the DC gun design parameters and beam combine schemes. Also, we will describe the details of gun design and the strategies to demonstrate high current high charge polarized electron beam from this source.

  8. THE RHIC SEQUENCER.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    VAN ZEIJTS,J.; DOTTAVIO,T.; FRAK,B.

    The Relativistic Heavy Ion Collider (RHIC) has a high level asynchronous time-line driven by a controlling program called the ''Sequencer''. Most high-level magnet and beam related issues are orchestrated by this system. The system also plays an important task in coordinated data acquisition and saving. We present the program, operator interface, operational impact and experience.

  9. IBS and Potential Luminosity Improvement for RHIC Operation Below Transition Energy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Fedotov,A.

    There is a strong interest in low-energy RHIC operations in the single-beam total energy range of 2.5-25 GeV/nucleon [1-3]. Collisions in this energy range, much of which is below nominal RHIC injection energy, will help to answer one of the key questions in the field of QeD about the existence and location of a critical point on the QCD phase diagram [4]. There have been several short test runs during 2006-2008 RHIC operations to evaluate RHIC operational challenges at these low energies [5]. Beam lifetimes observed during the test runs were limited by machine nonlinearities. This performance limit can bemore » improved with sufficient machine tuning. The next luminosity limitation comes from transverse and longitudinal Intra-beam Scattering (IBS), and ultimately from the space-charge limit. Detailed discussion of limiting beam dynamics effects and possible luminosity improvement with electron cooling can be found in Refs. [6-8]. For low-energy RHIC operation, particle losses from the RF bucket are of particular concern since the longitudinal beam size is comparable to the existing RF bucket at low energies. However, operation below transition energy allows us to exploit an Intra-beam Scattering (IBS) feature that drives the transverse and longitudinal beam temperatures towards equilibrium by minimizing the longitudinal diffusion rate using a high RF voltage. Simulation studies were performed with the goal to understand whether one can use this feature of IBS to improve luminosity of RHIC collider at low-energies. This Note presents results of simulations which show that additional luminosity improvement for low-energy RHIC project may be possible with high RF voltage from a 56 MHz superconducting RF cavity that is presently under development for RHIC.« less

  10. Flow in Au+Au collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Belt Tonjes, Marguerite; the PHOBOS Collaboration; Back, B. B.; Baker, M. D.; Ballintijn, M.; Barton, D. S.; Betts, R. R.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; García, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Hołyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steinberg, P.; Stephans, G. S. F.; Sukhanov, A.; Tang, J.-L.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wolfs, F. L. H.; Wosiek, B.; Wozniak, K.; Wuosmaa, A. H.; Wysłouch, B.

    2004-08-01

    The study of flow can provide information on the initial state dynamics and the degree of equilibration attained in heavy-ion collisions. This contribution presents results for both elliptic and directed flow as determined from data recorded by the PHOBOS experiment in Au+Au runs at RHIC at \\sqrt{sNN} = 19.6, 130 and 200 GeV. The PHOBOS detector provides a unique coverage in pseudorapidity for measuring flow at RHIC. The systematic dependence of flow on pseudorapidity, transverse momentum, centrality and energy is discussed.

  11. Flow in Au+Au collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Belt Tonjes, Marguerite; PHOBOS Collaboration; Back, B. B.; Baker, M. D.; Ballintijn, M.; Barton, D. S.; Betts, R. R.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; García, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Holynski, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steinberg, P.; Stephans, G. S. F.; Sukhanov, A.; Tang, J.-L.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wolfs, F. L. H.; Wosiek, B.; Wozniak, K.; Wuosmaa, A. H.; Wyslouch, B.

    2004-08-01

    The study of flow can provide information on the initial state dynamics and the degree of equilibration attained in heavy-ion collisions. This contribution presents results for both elliptic and directed flow as determined from data recorded by the PHOBOS experiment in Au+Au runs at RHIC at \\sqrt{s_{{\\rm NN}}} = 19.6, 130 and 200 GeV. The PHOBOS detector provides a unique coverage in pseudorapidity for measuring flow at RHIC. The systematic dependence of flow on pseudorapidity, transverse momentum, centrality and energy is discussed.

  12. Correction to AD/RHIC-47, Beam Transfer From AGS to RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Claus, J.; Foelsche, H.

    1988-12-12

    RHIC an acronym for Relativistic Heavy Ion Collider, is a facility for colliding heavy ions with each other, proposed for construction at Brookhaven National Laboratory. This facility and the motivation for building it, have been described. It consists of two intersecting storage rings and the purpose of this note is to describe how these two rings are to be filled with beam.

  13. Comparison of the Window-Frame RHIC-abort kicker with C-type Kicker

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Tsoupas, N.; Hahn, H.; Meng, W.

    2014-08-26

    The high intensity proton bunches (~2.5x10 11 p/bunch ) circulating in RHIC increase the temperature of the ferrite-made RHIC-abort-kickers above the Curie point; as a result, the kickers cannot provide the required field to abort the beam at the beam dump. A team of experts in the CAD department worked on modifying the design of the window-frame RHIC-abort kicker to minimize the hysteresis losses responsible for the increase of the ferrite’s temperature. In this technical note we report some results from the study of two possible modifications of the window-frame RHIC-abort kicker, and we compare these results with those ofmore » a propose C-type RHIC-abort kicker. We also include an Appendix where we describe a method which may further reduce the hysteresis losses of the window-frame kicker.« less

  14. IBS and possible luminosity improvement for RHIC operation below transition energy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Fedotov,A.V.

    There is a strong interest in low-energy RHIC collisions in the energy range below present RHIC transition energy. These collisions win help to answer one of the key questions in the field of QCD about the existence and location of a critical point on the QCD phase diagram. For such low-energy RHIC operation, particle losses from the RF bucket are of particular concern since the longitudinal beam size is comparable to the existing RF bucket at low energies. In this paper, we explore an Intrabeam Scattering (IBS) feature below transition energy that drives the transverse and longitudinal beam temperatures towardsmore » equilibrium to see whether we can minimize longitudinal diffusion due to IBS and predict some luminosity improvement for the low-energy RHIC project.« less

  15. WHAT'S the Matter at Rhic?

    NASA Astrophysics Data System (ADS)

    de Cassagnac, Raphael Granier

    I present here a concise review of the experimental results obtained at the Relativistic Heavy Ion Collider (RHIC), which shed light on the hot and dense quark gluon matter produced at these high temperature and density conditions.

  16. Frequency choice of eRHIC SRF linac

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Xu, W.; Ben-Zvi, I.; Roser, T.

    2016-01-05

    eRHIC is a FFAG lattice-based multipass ERL. The eRHIC SRF linac has been decided to change from 422 MHz 5-cell cavity to 647 MHz 5-cell cavity. There are several considerations affecting the frequency choice for a high-current multipass-ERL: the beam structure, bunch length, energy spread, beam-break-up (BBU) threshold, SRF loss considerations. Beyond the physics considerations, cost and complexity or risk is an important consideration for the frequency choice, especially when we are designing a machine to be built in a few years. Although there are some benefits of using a 422 MHz cavity for eRHIC ERL, however, there are somemore » very critical drawbacks, including lack of facilities to fabricate a 422 MHz 5-cell cavity, very few facilities to process such a cavity and no existing facility to test the cavity anywhere. As the cavity size is big and its weight is large, it is difficult to handle it during fabrication, processing and testing, and no one has experience in this area. As the cavity size is large, the cryomodule becomes big as well. All of these considerations drive the risk of building eRHIC ERL with 422 MHz cavities to a very high level. Therefore, a decision was made to change the frequency of main linac to be 647 MHz 5-cell cavities. This note will compare these two linacs: 422MHz 5-cell cavity linac and 647Mz 5-cell cavity SRF linac, from both practical point of view and physics point of view.« less

  17. Re-visiting RHIC snakes: OPERA fields, n 0 dance

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Meot, F.; Gupta, R.; Huang, H.

    In this Tech. Note RHIC snakes and stable spin directionmore » $$\\vector{n}$$ 0(s) are re-visited, based on OPERA-computed field maps of the former. The numerical simulations so undertaken provide various outcomes regarding RHIC optics and spin dynamics, in relation with orbital and focusing effects resulting from the use of this realistic 3-D representation of the snakes.« less

  18. Breakthrough: RHIC Explores Matter at the Dawn of Time

    ScienceCinema

    Sorensen, Paul

    2018-02-13

    Physicist Paul Sorensen describes discoveries made at the Relativistic Heavy Ion Collider (RHIC), a particle accelerator at the U.S. Department of Energy's Brookhaven National Laboratory. At RHIC, scientists from around the world study what the universe may have looked like in the first microseconds after its birth, helping us to understand more about why the physical world works the way it does -- from the smallest particles to the largest stars.

  19. Electron lenses for head-on beam-beam compensation in RHIC

    DOE PAGES

    Gu, X.; Fischer, W.; Altinbas, Z.; ...

    2017-02-17

    Two electron lenses (e-lenses) have been in operation during 2015 RHIC physics run as part of a head-on beam-beam compensation scheme. While the RHIC lattice was chosen to reduce the beam-beam induced resonance driving terms, the electron lenses reduced the beam-beam induced tune spread. This has been demonstrated for the first time. The beam-beam compensation scheme allows for higher beam-beam parameters and therefore higher intensities and luminosity. In this paper, we detailed the design considerations and verification of the electron beam parameters of the RHIC e-lenses. Lastly, longitudinal and transverse alignments with ion beams and the transverse beam transfer functionmore » (BTF) measurement with head-on electron-proton beam are presented.« less

  20. Electron lenses for head-on beam-beam compensation in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Gu, X.; Fischer, W.; Altinbas, Z.

    Two electron lenses (e-lenses) have been in operation during 2015 RHIC physics run as part of a head-on beam-beam compensation scheme. While the RHIC lattice was chosen to reduce the beam-beam induced resonance driving terms, the electron lenses reduced the beam-beam induced tune spread. This has been demonstrated for the first time. The beam-beam compensation scheme allows for higher beam-beam parameters and therefore higher intensities and luminosity. In this paper, we detailed the design considerations and verification of the electron beam parameters of the RHIC e-lenses. Lastly, longitudinal and transverse alignments with ion beams and the transverse beam transfer functionmore » (BTF) measurement with head-on electron-proton beam are presented.« less

  1. AN ENGINEERING SOLUTION TO THE RHIC BEAM ABORT KICKER UPGRADE.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    ZHANG,W.ROSER,T.SANDBERG,J.TAN,Y.ET AL.

    2004-05-23

    The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory is the world largest superconducting accelerator for nuclear energy research. Particle beams traveling in opposite directions in two accelerator rings, Blue and Yellow, collide at six interaction regions to create phenomena of the early universe. There are more than 1700 superconducting magnets and very sophisticate and delicate large detectors inside the RHIC tunnel. With high beam intensity and ultra high beam energy, an inadvertent loss of beam can result severe damage to the superconducting magnets and detectors. Beam abort kickers are used to remove beam safely from the ring. Themore » large inductive load, high current capability, short beam gap, and high reliability are the challenging issues of this system design. With high intensity and high momentum beam operation, it is desirable to have all high voltage modulators located outside of RHIC tunnel. However, to generate 22 kA output current per modulator with fast rise time, a conventional low impedance PFN and matched transmission cable design can push the operation voltage easily into 100 kV range. The large quantity of high voltage pulse transmission cables required by conventional design is another difficult issue. Therefore, the existing system has all ten high voltage modulators located inside RHIC tunnel. More than a hundred plastic packaged mineral oil filled high voltage capacitors raise serious concerns of fire and smoking threats. Other issues, such as kicker misfire, device availability in the future, and inaccessibility during operation, also demand an engineering solution for the future upgrade. In this paper, we investigate an unconventional approach to meet the technical challenges of RHIC beam abort system. The proposed design has all modulators outside of the RHIC tunnel. It will transmit output pulse through high voltage cables. The modulators will utilize solid-state switches, and operate at a maximum voltage

  2. RHIC ABORT KICKER WITH REDUCED COUPLING IMPEDANCE.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    HAHN,H.; DAVINO,D.

    2002-06-02

    Kicker magnets typically represent the most important contributors to the transverse impedance budget of accelerators and storage rings. Methods of reducing the impedance value of the SNS extraction kicker presently under construction and, in view of a future performance upgrade, that of the RHIC abort kicker have been thoroughly studied at this laboratory. In this paper, the investigation of a potential improvement from using ferrite different from the BNL standard CMD5005 is reported. Permeability measurements of several ferrite types have been performed. Measurements on two kicker magnets using CMD5005 and C2050 suggest that the impedance of a magnet without externalmore » resistive damping, such as the RHIC abort kicker, would benefit.« less

  3. Particle production at RHIC and LHC energies

    NASA Astrophysics Data System (ADS)

    Tawfik, A.; Gamal, E.; Shalaby, A. G.

    2015-07-01

    The production of pion, kaon and proton was measured in Pb-Pb collisions at nucleus-nucleus center-of-mass energy sNN = 2.76TeV by the ALICE experiment at Large Hadron Collider (LHC). The particle ratios of these species compared to the RHIC measurements are confronted to the hadron resonance gas (HRG) model and to simulations based on the event generators PYTHIA 6.4.21 and HIJING 1.36. It is found that the homogeneous particle-antiparticle ratios (same species) are fully reproducible by means of HRG and partly by PYTHIA 6.4.21 and HIJING 1.36. The mixed kaon-pion and proton-pion ratios measured at RHIC and LHC energies seem to be reproducible by the HRG model. On the other hand, the strange abundances are underestimated in both event generators. This might be originated to strangeness suppression in the event generators and/or possible strangeness enhancement in the experimental data. It is apparent that the values of kaon-pion ratios are not sensitive to the huge increase of sNN from 200 (RHIC) to 2760 GeV (LHC). We conclude that the ratios of produced particle at LHC seem not depending on the system size.

  4. RHIC The Perfect Liquid

    ScienceCinema

    BNL

    2017-12-09

    Evidence to date suggests that gold-gold collisions the Relativistic Heavy Ion Collider at Brookhaven are indeed creating a new state of hot, dense matter, but one quite different and even more remarkable than had been predicted. Instead of behaving like a gas of free quarks and gluons, as was expected, the matter created in RHIC's heavy ion collisions appears to be more like a "perfect" liquid.

  5. Autonomous Navigation Above the GNSS Constellations and Beyond: GPS Navigation for the Magnetospheric Multiscale Mission and SEXTANT Pulsar Navigation Demonstration

    NASA Technical Reports Server (NTRS)

    Winternitz, Luke

    2017-01-01

    This talk will describe two first-of-their-kind technology demonstrations attached to ongoing NASA science missions, both of which aim to extend the range of autonomous spacecraft navigation far from the Earth. First, we will describe the onboard GPS navigation system for the Magnetospheric Multiscale (MMS) mission which is currently operating in elliptic orbits reaching nearly halfway to the Moon. The MMS navigation system is a key outgrowth of a larger effort at NASA Goddard Space Flight Center to advance high-altitude Global Navigation Satellite System (GNSS) navigation on multiple fronts, including developing Global Positioning System receivers and onboard navigation software, running simulation studies, and leading efforts to characterize and protect signals at high-altitude in the so-called GNSS Space-Service Volume (SSV). In the second part of the talk, we will describe the Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) mission that aims to make the first in-space demonstration of X-ray pulsar navigation (XNAV). SEXTANT is attached to the NASA astrophysics mission Neutron-star Interior Composition ExploreR (NICER) whose International Space Station mounted X-ray telescope is investigating the fundamental physics of extremes in gravity, material density, and electromagnetic fields found in neutron stars, and whose instrument provides a nearly ideal navigation sensor for XNAV.

  6. Ferrite HOM Absorber for the RHIC ERL

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hahn,H.; Choi, E.M.; Hammons, L.

    A superconducting Energy Recovery Linac is under construction at Brookhaven National Laboratory to serve as test bed for RHIC upgrades. The damping of higher-order modes in the superconducting five-cell cavity for the Energy-Recovery linac at RHIC is performed exclusively by two ferrite absorbers. The ferrite properties have been measured in ferrite-loaded pill box cavities resulting in the permeability values given by a first-order Debye model for the tiled absorber structure and an equivalent permeability value for computer simulations with solid ring dampers. Measured and simulated results for the higher-order modes in the prototype copper cavity are discussed. First room-temperature measurementsmore » of the finished niobium cavity are presented which confirm the effective damping of higher-order modes in the ERL. by the ferrite absorbers.« less

  7. Open Heavy Flavor and Quarkonia Results at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Nouicer, Rachid

    RHIC experiments carry out a comprehensive physics program which studies open heavy flavor and quarkonium production in relativistic heavy-ion collisions. The discovery at RHIC of large high-pT suppression and flow of electrons from heavy quarks flavors have altered our view of the hot and dense matter formed in central Au + Au collisions at √S NN = 200 GeV. These results suggest a large energy loss and flow of heavy quarks in the hot, dense matter. In recent years, the RHIC experiments upgraded the detectors; (1) PHENIX Collaboration installed silicon vertex tracker (VTX) at mid-rapidity region and forward silicon vertexmore » tracker (FVTX) at the forward rapidity region, and (2) STAR Collaboration installed the heavy flavor tracker (HFT) and the muon telescope detector (MTD) both at the mid-rapidity region. With these new upgrades, both experiments have collected large data samples. These new detectors enhance the capability of heavy flavor measurements via precision tracking. The PHENIX experiments established measurements of ψ(1S) and ψ(2S) production as a function of system size, p + p, p + Al, p + Au, and 3He + Au collisions at √S NN = 200 GeV. In p/ 3He + A collisions at forward rapidity, we observe no difference in the ψ(2S)/ψ(1S) ratio relative to p + p collisions. At backward rapidity, where the comoving particle density is higher, we find that the ψ(2S) is preferentially suppressed by a factor of two. STAR Collaboration presents the first J/ψ and Υ measurements in the di-muon decay channel in Au + Au collisions at GeV at mid-rapidity at RHIC. Here, we observe clear J/ψ RAA suppression and qualitatively well described by transport models simultaneously accounting for dissociation and regeneration processes.« less

  8. Open Heavy Flavor and Quarkonia Results at RHIC

    NASA Astrophysics Data System (ADS)

    Nouicer, Rachid

    2017-12-01

    RHIC experiments carry out a comprehensive physics program which studies open heavy flavor and quarkonium production in relativistic heavy-ion collisions. The discovery at RHIC of large high-pT suppression and flow of electrons from heavy quarks flavors have altered our view of the hot and dense matter formed in central Au + Au collisions at GeV. These results suggest a large energy loss and flow of heavy quarks in the hot, dense matter. In recent years, the RHIC experiments upgraded the detectors; (1) PHENIX Collaboration installed silicon vertex tracker (VTX) at mid-rapidity region and forward silicon vertex tracker (FVTX) at the forward rapidity region, and (2) STAR Collaboration installed the heavy flavor tracker (HFT) and the muon telescope detector (MTD) both at the mid-rapidity region. With these new upgrades, both experiments have collected large data samples. These new detectors enhance the capability of heavy flavor measurements via precision tracking. The PHENIX experiments established measurements of ψ(1S) and ψ(2S) production as a function of system size, p + p, p + Al, p + Au, and 3He + Au collisions at GeV. In p/3He + A collisions at forward rapidity, we observe no difference in the ψ(2S)/ψ(1S) ratio relative to p + p collisions. At backward rapidity, where the comoving particle density is higher, we find that the ψ(2S) is preferentially suppressed by a factor of two. STAR Collaboration presents the first J/ψ and ϒ measurements in the di-muon decay channel in Au + Au collisions at GeV at mid-rapidity at RHIC. We observe clear J/ψ RAA suppression and qualitatively well described by transport models simultaneously accounting for dissociation and regeneration processes.

  9. Open Heavy Flavor and Quarkonia Results at RHIC

    DOE PAGES

    Nouicer, Rachid

    2017-12-05

    RHIC experiments carry out a comprehensive physics program which studies open heavy flavor and quarkonium production in relativistic heavy-ion collisions. The discovery at RHIC of large high-pT suppression and flow of electrons from heavy quarks flavors have altered our view of the hot and dense matter formed in central Au + Au collisions at √S NN = 200 GeV. These results suggest a large energy loss and flow of heavy quarks in the hot, dense matter. In recent years, the RHIC experiments upgraded the detectors; (1) PHENIX Collaboration installed silicon vertex tracker (VTX) at mid-rapidity region and forward silicon vertexmore » tracker (FVTX) at the forward rapidity region, and (2) STAR Collaboration installed the heavy flavor tracker (HFT) and the muon telescope detector (MTD) both at the mid-rapidity region. With these new upgrades, both experiments have collected large data samples. These new detectors enhance the capability of heavy flavor measurements via precision tracking. The PHENIX experiments established measurements of ψ(1S) and ψ(2S) production as a function of system size, p + p, p + Al, p + Au, and 3He + Au collisions at √S NN = 200 GeV. In p/ 3He + A collisions at forward rapidity, we observe no difference in the ψ(2S)/ψ(1S) ratio relative to p + p collisions. At backward rapidity, where the comoving particle density is higher, we find that the ψ(2S) is preferentially suppressed by a factor of two. STAR Collaboration presents the first J/ψ and Υ measurements in the di-muon decay channel in Au + Au collisions at GeV at mid-rapidity at RHIC. Here, we observe clear J/ψ RAA suppression and qualitatively well described by transport models simultaneously accounting for dissociation and regeneration processes.« less

  10. RHIC Au beam in Run 2014

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Zhang, S. Y.

    Au beam at the RHIC ramp in run 2014 is reviewed together with the run 2011 and run 2012. Observed bunch length and longitudinal emittance are compared with the IBS simulations. The IBS growth rate of the longitudinal emittance in run 2014 is similar to run 2011, and both are larger than run 2012. This is explained by the large transverse emittance at high intensity observed in run 2012, but not in run 2014. The big improvement of the AGS ramping in run 2014 might be related to this change. The importance of the injector intensity improvement in run 2014more » is emphasized, which gives rise to the initial luminosity improvement of 50% in run 2014, compared with the previous Au-Au run 2011. In addition, a modified IBS model, which is calibrated using the RHIC Au runs from 9.8 GeV/n to 100 GeV/n, is presented and used in the study.« less

  11. Detecting the anti-hypertriton and anti-helium-4 from the RHIC

    NASA Astrophysics Data System (ADS)

    Ma, Yu-Gang

    2014-03-01

    Recent progress on the dectection of antimatter particles at RHIC is briefly reviewed. The observations of the anti-hypertriton ({}_ {^3overline {{H}} )and anti-helium-4 nuclei ( ( {^4overline {{{He}}} , {{or}} overline {{α }} } ), or ᾱ) from the RHIC-STAR Collaboration are highlighted. In addition, preliminary lifetime measurement of {}_Λ ^3overline {{H}} and energy dependence of strangeness population factor are presented. The mechanism of light antinuclei production is also discussed.

  12. A LOW GAMMA_T INJECTION LATTICE FOR POLARIZED PROTONS IN RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    MONTAG,C.

    2007-06-25

    Polarized protons are injected into the Relativistic Heavy Jon Collider (RHIC) just above transition energy. When installation of a cold partial Siberian snake in the AGS required lowering the injection energy by {Delta}{gamma} = 0.56, the transition energy in RHIC had to be lowered accordingly to ensure proper longitudinal matching. This paper presents lattice modifications implemented to lower the transition energy by {Delta}{gamma}{sub t} = 0.8.

  13. A new detector at RHIC, sPHENIX goals and status

    NASA Astrophysics Data System (ADS)

    Reed, Rosi; sPHENIX Collaboration

    2017-01-01

    The study of heavy-ion collisions, which can create a new form matter, a nearly ideal strongly interacting fluid where quarks and gluons are no longer confined into nucleons, called Quark Gluon Plasma (QGP), is on the frontier of QCD studies. The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Lab (BNL) has had a long and successful program of QGP study since 2000, with many upgrades that have increased the delivered luminosity considerably in the last decade. The sPHENIX proposal is for a second generation experiment at RHIC, which will take advantage of the increased luminosity, and allow measurements of jets, jet correlations and Upsilons (ϒs), with a kinematic reach that will overlap with measurements made at the Large Hadron Collider (LHC). Complementary measurements at RHIC and at the LHC probe the QGP at different temperatures and densities, which are necessary to determine the temperature dependence of transport coefficients of the QGP. The sPHENIX detector will have large acceptance electromagnetic and hadronic calorimetry, as well as precision tracking, and high rate capability which are necessary for precision jet and ϒ observables. The experiment will enable a program of systematic measurements at RHIC, with a detector capable of acquiring a large sample of events in p+p, p+A, and A+A collisions. This proceedings outlines the key measurements enabled by the new detector, and status of the project itself.

  14. χ cJ polarization in polarized proton-proton collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Nayak, Gouranga C.

    2017-01-01

    We study inclusive χ cJ production with definite polarizations in polarized proton-proton collisions at √ s = 200 and 500 GeV at RHIC by using non-relativistic QCD (NRQCD) color-octet mechanism. We present results of rapidity distribution of χ c0, χ c1 and χ c2 production with specific polarizations in polarized p-p collisions at RHIC within the PHENIX detector acceptance range. We also present the corresponding results for the spin asymmetries.

  15. Polarized He 3 + 2 ions in the Alternate Gradient Synchrotron to RHIC transfer line

    DOE PAGES

    Tsoupas, N.; Huang, H.; Méot, F.; ...

    2016-09-06

    The proposed electron-hadron collider (eRHIC) to be built at Brookhaven National Laboratory (BNL) will allow the collisions of 20 GeV polarized electrons with 250 GeV polarized protons, or 100 GeV/n polarized 3He +2 ions, or other unpolarized ion species. The large value of the anomalous magnetic moment of the 3He nucleus G He=(g₋2)/2=₋4.184 (where g is the g-factor of the 3He nuclear spin) combined with the peculiar layout of the transfer line which transports the beam bunches from the Alternate Gradient Synchrotron (AGS) to the Relativistic Heavy Ion Collider (RHIC) makes the transfer and injection of polarized 3He ions frommore » AGS to RHIC (AtR) a special case as we explain in the paper. Specifically in this paper we calculate the stable spin direction of a polarized 3He beam at the exit of the AtR line which is also the injection point of RHIC, and lastly, we discuss a simple modifications of the AtR beam-transfer-line, to perfectly match the stable spin direction of the injected polarized 3He beam to that of the circulating beam, at the injection point of RHIC.« less

  16. From RHIC to LHC: Lessons on the QGP

    NASA Astrophysics Data System (ADS)

    Heinz, Ulrich

    2011-10-01

    Recent data from heavy-ion collisions at RHIC and LHC, together with significant advances in theory, have allowed us to make significant first steps in proceeding from a qualitative understanding of high energy collision dynamics to a quantitative characterization of the transport properties of the hot and dense QCD matter created in these collisions. The almost perfectly liquid nature of the Quark-Gluon Plasma (QGP) created at RHIC has recently also been confirmed at the much higher LHC energies, and we can now constrain the specific QGP shear viscosity (η / s) QGP to within a factor of 2.5 of its conjectured lower quantum bound. Viscous hydrodynamics, coupled to a microscopic hadron cascade at late times, has proven to be an extremely successful and highly predictive model for the QGP evolution at RHIC and LHC. The experimental discovery of higher order harmonic flow coefficients and their theoretically predicted differential sensitivity to shear viscosity promises additional gains in precision by about a factor 5 in (η / s) QGP for the very near future. The observed modification of jets and suppression of high-pT hadrons confirms the picture of the QGP as a strongly coupled colored liquid, and recent LHC data yield strong constraints on parton energy loss models, putting significant strain on some theoretical approaches, tuned to RHIC data, that are based on leading-order perturbative QCD. Thermal photon radiation provides important cross-checks on the early stages of dynamical evolution models and constrains the initial QGP temperature, but the recently measured strong photon elliptic flow challenges our present understanding of photon emission rates in the hadronic phase. Recent progress in developing a complete theoretical model for all stages of the QGP fireball expansion, from strong fluctuating gluon fields at its beginning to final hadronic freeze-out, and remaining challenges will be discussed. Work supported by DOE (grants DE-SC0004286 and DE

  17. QCD matter thermalization at the RHIC and the LHC

    NASA Astrophysics Data System (ADS)

    Xu, Zhe; Cheng, Luan; El, Andrej; Gallmeister, Kai; Greiner, Carsten

    2009-06-01

    Employing the perturbative QCD inspired parton cascade, we investigate kinetic and chemical equilibration of the partonic matter created in central heavy ion collisions at RHIC and LHC energies. Two types of initial conditions are chosen. One is generated by the model of wounded nucleons using the PYTHIA event generator and Glauber geometry. Another is considered as a color glass condensate. We show that kinetic equilibration is almost independent of the chosen initial conditions, whereas there is a sensitive dependence for chemical equilibration. The time scale of thermalization lies between 1 and 1.5 fm/c. The final parton transverse energy obtained from BAMPS calculations is compared with the RHIC data and is estimated for the LHC energy.

  18. Overview of results from PHOBOS experiment at RHIC

    NASA Astrophysics Data System (ADS)

    Olszewski, Andrzej; PHOBOS Collaboration; Back, B. B.; Baker, M. D.; Barton, D. S.; Betts, R. R.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Corbo, J.; Decowski, M. P.; Garcia, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Henderson, C.; Hicks, D.; Hofman, D. J.; Holzman, B.; Hollis, R. S.; Hoyński, R.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Michaowski, J.; Mignerey, A. C.; Mülmenstädt, J.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Rafelski, M.; Rbeiz, M.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S. G.; Steinberg, P.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Tang, J. L.; Teng, R.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysouch, B.

    2002-07-01

    An overview of results for interactions of Au+Au ions at centre-of-mass energies of √sNN = 56, 130 and 200 GeV obtained by the PHOBOS collaboration at RHIC is given. Measurements of primary charged particle density near mid-rapidity indicate that particle production grows logarithmically with collision energy and faster than linearly with the number of interacting nucleons. Elliptic flow is found to be much stronger at RHIC than at SPS energy. The effect is strongest in peripheral events and decreases for more central collisions and emission angles |η| > 1. The measured anti-particle to particle ratios of production rates for pions, kaons and protons in central Au+Au interactions at √sNN = 130 GeV are compatible with the statistical model of particle production, showing an increasingly baryon-free region in mid-rapidity with the increase of collision energy.

  19. Optics measurement and correction during acceleration with beta-squeeze in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Liu, C.; Marusic, A.; Minty, M.

    2015-05-03

    In the past, beam optics correction at RHIC has only taken place at injection and at final energy, with interpolation of corrections partially into the acceleration cycle. Recent measurements of the beam optics during acceleration and squeeze have evidenced significant beta-beats that, if corrected, could minimize undesirable emittance dilutions and maximize the spin polarization of polarized proton beams by avoiding the high-order multipole fields sampled by particles within the bunch. We recently demonstrated successful beam optics corrections during acceleration at RHIC. We verified conclusively the superior control of the beam realized via these corrections

  20. Linear optics measurements and corrections using an AC dipole in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wang, G.; Bai, M.; Yang, L.

    2010-05-23

    We report recent experimental results on linear optics measurements and corrections using ac dipole. In RHIC 2009 run, the concept of the SVD correction algorithm is tested at injection energy for both identifying the artificial gradient errors and correcting it using the trim quadrupoles. The measured phase beatings were reduced by 30% and 40% respectively for two dedicated experiments. In RHIC 2010 run, ac dipole is used to measure {beta}* and chromatic {beta} function. For the 0.65m {beta}* lattice, we observed a factor of 3 discrepancy between model and measured chromatic {beta} function in the yellow ring.

  1. The Rhic Azimuth Quadrupole:. "perfect Liquid" or Gluonic Radiation?

    NASA Astrophysics Data System (ADS)

    Trainor, Thomas A.

    Large elliptic flow at RHIC seems to indicate that ideal hydrodynamics provides a good description of Au-Au collisions, at least at the maximum RHIC energy. The medium formed has been interpreted as a nearly perfect (low-viscosity) liquid, and connections have been made to gravitation through string theory. Recently, claimed observations of large flow fluctuations comparable to participant eccentricity fluctuations seem to confirm the ideal hydro scenario. However, determination of the azimuth quadrupole with 2D angular autocorrelations, which accurately distinguish "flow" (quadrupole) from "nonflow" (minijets), contradicts conventional interpretations. Centrality trends may depend only on the initial parton geometry, and methods used to isolate flow fluctuations are sensitive instead mainly to minijet correlations. The results presented in this paper suggest that the azimuth quadrupole may be a manifestation of gluonic multipole radiation.

  2. MEASURED TRANSVERSE COUPLING IMPEDANCE OF RHIC INJECTION AND ABORT KICKERS.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    HAHN,H.; DAVINO,D.

    2001-06-18

    Concerns regarding possible transverse instabilities in RHIC and the SNS pointed to the need for measurements of the transverse coupling impedance of ring components. The impedance of the RHIC injection and abort kicker was measured using the conventional method based on the S{sub 21} forward transmission coefficient. A commercial 450 {Omega} twin-wire Lecher line were used and the data was interpreted via the log-formula. All measurements, were performed in test stands fully representing operational conditions including pulsed power supplies and connecting cables. The measured values for the transverse coupling impedance in kick direction and perpendicular to it are comparable inmore » magnitude, but differ from Handbook predictions.« less

  3. CONTINUOUS ABORT GAP CLEANING AT RHIC.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    DREES,A.FLILLER,R.III.FU,W.MICHNOFF,R.

    2004-07-05

    Since the RHIC Au-Au run in the year 2001 the 200 MHz cavity system was used at storage and a 28 MHz system during injection and acceleration. The rebucketing procedure potentially causes a higher debunching rate of heavy ion beams in addition to amplifying debunching due to other mechanisms. At the end of a four hour store, debunched beam can easily account for more than 50% of the total beam intensity. This effect is even stronger with the achieved high intensities of the RHIC Au-Au run in 2004. A beam abort at the presence of a lot of debunched beammore » bears the risk of magnet quenching and experimental detector damage due to uncontrolled beam losses. Thus it is desirable to avoid any accumulation of debunched beam from the beginning of each store, in particular to anticipate cases of unscheduled beam aborts due to a system failure. A combination of a fast transverse kickers and the new 2-stage copper collimator system are used to clean the abort gap continuously throughout the store with a repetition rate of 1 Hz. This report gives. an overview of the new gap cleaning procedure and the achieved performance.« less

  4. Proceedings of RIKEN BNL Research Center Workshop: Progress in High-pT Physics at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Bazilevsky, A.; Bland, L.; Vogelsang, W.

    2010-03-17

    This volume archives the presentations at the RIKEN BNL Research Center workshop 'Progress in High-PT Physics at RHIC', held at BNL in March 2010. Much has been learned from high-p{sub T} physics after 10 years of RHIC operations for heavy-ion collisions, polarized proton collisions and d+Au collisions. The workshop focused on recent progress in these areas by both theory and experiment. The first morning saw review talks on the theory of RHIC high-p{sub T} physics by G. Sterman and J. Soffer, and on the experimental results by M. Tannenbaum. One of the most exciting recent results from the RHIC spinmore » program is the first observation of W bosons and their associated single-spin asymmetry. The new preliminary data were reported on the first day of our workshop, along with a theoretical perspective. There also were detailed discussions on the global analysis of polarized parton distributions, including the knowledge on gluon polarization and the impact of the W-data. The main topic of the second workshop day were single-transverse spin asymmetries and their analysis in terms of transverse-momentum dependent parton distributions. There is currently much interest in a future Drell-Yan program at RHIC, thanks to the exciting physics opportunities this would offer. This was addressed in some of the talks. There also were presentations on the latest results on transverse-spin physics from HERMES and BELLE. On the final day of the workshop, the focus shifted toward forward and small-x physics at RHIC, which has become a cornerstone of the whole RHIC program. Exciting new data were presented and discussed in terms of their possible implications for our understanding of strong color-field phenomena in QCD. In the afternoon, there were discussions of nuclear parton distributions and jet observables, among them fragmentation. The workshop was concluded with outlooks toward the near-term (LHC, JLab) and longer-term (EIC) future. The workshop has been a great success. We

  5. Detectors for low energy electron cooling in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Carlier, F. S.

    Low-energy operation of RHIC is of particular interest to study the location of a possible critical point in the QCD phase diagram. The performance of RHIC at energies equal to or lower than 10 GV/nucleon is limited by nonlinearities, Intra-BeamScattering (IBS) processes and space-charge effects. To successfully address the luminosity and ion store lifetime limitations imposed by IBS, the method of electron cooling has been envisaged. During electron cooling processes electrons are injected along with the ion beam at the nominal ion bunch velocities. The velocity spread of the ion beam is reduced in all planes through Coulomb interactions betweenmore » the cold electron beam and the ion beam. The electron cooling system proposed for RHIC will be the first of its kind to use bunched beams for the delivery of the electron bunches, and will therefore be accompanied by the necessary challenges. The designed electron cooler will be located in IP2. The electron bunches will be accelerated by a linac before being injected along side the ion beams. Thirty consecutive electron bunches will be injected to overlap with a single ion bunch. They will first cool the yellow beam before being extracted, turned by 180-degrees, and reinjected into the blue beam for cooling. As such, both the yellow and blue beams will be cooled by the same ion bunches. This will pose considerable challenges to ensure proper electron beam quality to cool the second ion beam. Furthermore, no ondulator will be used in the electron cooler so radiative recombination between the ions and the electrons will occur.« less

  6. QUEST FOR A NEW WORKING POINT IN RHIC.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    TOMAS,R.BAI,M.FISCHER,W.PTITSYN,V.SATOGATA,T.ROSER,T.

    2004-07-05

    The beam-beam interaction is a limiting factor in RHIC's performance, particularly in proton operation. Changing the working point is a strategy to alleviate the beam-beam effect and improve the performance of the machine. Experiments at injection energy and simulations have been performed for a set of working points to determine the best candidates.

  7. Potential for luminosity improvement for low-energy RHIC operation with long bunches

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Fedotov, A.; Blaskiewicz, M.

    Electron cooling was proposed to increase luminosity of the RHIC collider for heavy ion beams at low energies. Luminosity decreases as the square of bunch intensity due to the beam loss from the RF bucket as a result of the longitudinal intra beam scattering (IBS), as well as due to the transverse emittance growth because of the transverse IBS. Both transverse and longitudinal IBS can be counteracted with electron cooling. This would allow one to keep the initial peak luminosity close to constant throughout the store essentially without the beam loss. In addition, the phase-space density of the hadron beamsmore » can be further increased by providing stronger electron cooling. Unfortunately, the defining limitation for low energies in RHIC is expected to be the space charge. Here we explore an idea of additional improvement in luminosity, on top of the one coming from just IBS compensation and longer stores, which may be expected if one can operate with longer bunches at the space-charge limit in a collider. This approach together with electron cooling may result in about 10-fold improvement in total luminosity for low-energy RHIC program.« less

  8. Report of the eRHIC Ring-Ring Working Group

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Aschenauer, E. C.; Berg, S.; Blaskiewicz, M.

    2015-10-13

    This report evaluates the ring-ring option for eRHIC as a lower risk alternative to the linac-ring option. The reduced risk goes along with a reduced initial luminosity performance. However, a luminosity upgrade path is kept open. This upgrade path consists of two branches, with the ultimate upgrade being either a ring-ring or a linac-ring scheme. The linac-ring upgrade could be almost identical to the proposed linac-ring scheme, which is based on an ERL in the RHIC tunnel. This linac-ring version has been studied in great detail over the past ten years, and its significant risks are known. On the othermore » hand, no detailed work on an ultimate performance ring-ring scenario has been performed yet, other than the development of a consistent parameter set. Pursuing the ring-ring upgrade path introduces high risks and requires significant design work that is beyond the scope of this report.« less

  9. PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP ENTITLED "ODDERON SEARCHES AT RHIC" (VOLUME 76)

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    ORGANIZERS: GURYN, W.; KOVCHEGOV, Y.; VOGELSANG, W.

    The Odderon, a charge-conjugation-odd partner of the Pomeron, has been a puzzle ever since its introduction in 1973. The Pomeron describes a colorless exchange with vacuum quantum numbers in the t-channel of hadronic scattering at high energies. The concept was originally formulated for the non-perturbative regime of Quantum Chromodynamics (QCD). In perturbation theory, the simplest picture of the Poineron is that of a two-gluon exchange process, whereas an Odderon can be thought of as an exchange of three gluons. Both the Pomeron and the Odderon are expected in QCD. However, while there exists plenty of experimental data that could bemore » successfully described by Pomeron exchanges (for example in electron-proton and hadron-hadron scattering at high energies), no experimental sign of the Odderon has been observed. One of the very few hints so far is the difference in the diffractive minima of elastic proton-proton and proton-antiproton scattering measured at the ISR. The Odderon has recently received renewed attention by QCD researchers, mainly for the following two reasons. First of all, RHIC has entered the scene, offering exciting unique new opportunities for Odderon searches. RHIC provides collisions of nuclei at center-of-mass energies far exceeding those at all previous experiments. RHIC also provides collisions of protons of the highest center-of-mass energy, and in the interval, which has not been explored previously in p {bar p} collisions. In addition, it also has the unique feature of polarization for the proton beams, promising to become a crucial tool in Odderon searches. Indeed, theorists have proposed possible signatures of the Odderon in some spin asymmetries measurable at RHIC. Qualitatively unique signals should be seen in these observables if the Odderon coupling is large. Secondly, the Odderon has recently been shown to naturally emerge from the Color Glass Condensate (CGC), a theory for the high-energy asymptotics of QCD. It has been

  10. Small Collision Systems at RHIC

    NASA Astrophysics Data System (ADS)

    Novitzky, Norbert

    2018-02-01

    The observation of long range correlations in highly asymmetric systems, as in p+Pb and d+Au collisions, suggests a creation of a medium with collective behavior. It is still an open question if the quark-gluon plasma is formed in these collision. Hence, the RHIC collider invested time to study the small systems in different collision systems and energies. Here we discuss the recent results from the PHENIX and STAR collaborations in four different collision systems p+Al, p+Au, d+Au and 3He+Au at = 200 GeV, and also for the energy scan in d+Au collisions between = 19.6 - 200 GeV.

  11. A HELICAL MAGNET DESIGN FOR RHIC.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    WILLEN,E.; GUPTA,R.; JAIN,A.

    1997-05-12

    Helical dipole magnets are required in a project for the Relativistic Heavy Ion Collider (RHIC) to control and preserve the beam polarization in order to allow the collision of polarized proton beams. Specifications are for low current superconducting magnets with a 100 mm coil aperture and a 4 Tesla field in which the field rotates 360 degrees over a distance of 2.4 meters. A magnet meeting the requirements has been developed that uses a small diameter cable wound into helical grooves machined into a thick-walled aluminum cylinder.

  12. Recent results from PHOBOS at RHIC

    NASA Astrophysics Data System (ADS)

    Back, B. B.; Baker, M. D.; Barton, D. S.; Betts, R. R.; Ballintijn, M.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; García, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Hołyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Michałowski, J.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S. G.; Steinberg, P.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; van Niewwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysłouch, B.; Robert PakThe Phobos Collaboration

    2003-06-01

    The PHOBOS experiment at RHIC has recorded measurements for AuAu collisions spanning nucleon-nucleon center-of-mass energies from √ SNN = 19.6 GeV to 200 GeV. Global observables such as elliptic flow and charged particle multiplicity provide important constraints on model predictions that characterize the state of matter produced in these collisions. The nearly 4π acceptance of the PHOBOS experiment provides excellent coverage for complete flow and multiplicity measurements. Results including beam energy and centrality dependencies are presented and compared to elementary systems.

  13. Study of Lambda polarization at RHIC BES and LHC energies

    NASA Astrophysics Data System (ADS)

    Karpenko, Iurii; Becattini, Francesco

    2018-02-01

    In hydrodynamic approach to relativistic heavy ion collisions, hadrons with nonzero spin, produced out of the hydrodynamic medium, can acquire polarization via spin-vorticity thermodynamic coupling mechanism. The hydrodynamical quantity steering the polarization is the thermal vorticity, that is minus the antisymmetric part of the gradient of four-temperature field. Based on this mechanism there have been several calculations in hydrodynamic and non-hydrodynamic models for non-central heavy ion collisions in the RHIC Beam Energy Scan energy range, showing that the amount of polarization of produced Λ hyperons ranges from few percents to few permille, and decreases with collision energy. We report on an extension of our existing calculation of global Λ polarization in UrQMD+vHLLE model to full RHIC and LHC energies, and discuss the component of polarization along the beam direction, which is the dominant one at high energies.

  14. ELECTRON CLOUD OBSERVATIONS AND CURES IN RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    FISCHER,W.; BLASKIEWICZ, M.; HUANG, H.

    Since 2001 RHIC has experienced electron cloud effects, which have limited the beam intensity. These include dynamic pressure rises - including pressure instabilities, tune shifts, a reduction of the stability threshold for bunches crossing the transition energy, and possibly incoherent emittance growth. We summarize the main observations in operation and dedicated experiments, as well as countermeasures including baking, NEG coated warm beam pipes, solenoids, bunch patterns, anti-grazing rings, pre-pumped cold beam pipes, scrubbing, and operation with long bunches.

  15. The PHOBOS perspective on discoveries at RHIC

    NASA Astrophysics Data System (ADS)

    Back, B. B.; Baker, M. D.; Ballintijn, M.; Barton, D. S.; Becker, B.; Betts, R. R.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Chai, Z.; Decowski, M. P.; García, E.; Gburek, T.; George, N. K.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Harrington, A. S.; Hauer, M.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Hołyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lee, J. W.; Lin, W. T.; Manly, S.; McLeod, D.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Seals, H.; Sedykh, I.; Skulski, W.; Smith, C. E.; Stankiewicz, M. A.; Steinberg, P.; Stephans, G. S. F.; Sukhanov, A.; Tang, J.-L.; Tonjes, M. B.; Trzupek, A.; Vale, C. M.; van Nieuwenhuizen, G. J.; Vaurynovich, S. S.; Verdier, R.; Veres, G. I.; Wenger, E.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysłouch, B.; Zhang, J.; Phobos Collaboration

    2005-08-01

    This paper describes the conclusions that can be drawn from the data taken thus far with the PHOBOS detector at RHIC. In the most central Au + Au collisions at the highest beam energy, evidence is found for the formation of a very high energy density system whose description in terms of simple hadronic degrees of freedom is inappropriate. Furthermore, the constituents of this novel system are found to undergo a significant level of interaction. The properties of particle production at RHIC energies are shown to follow a number of simple scaling behaviors, some of which continue trends found at lower energies or in simpler systems. As a function of centrality, the total number of charged particles scales with the number of participating nucleons. When comparing Au + Au at different centralities, the dependence of the yield on the number of participants at higher p ( ˜4 GeV/c) is very similar to that at low transverse momentum. The measured values of charged particle pseudorapidity density and elliptic flow were found to be independent of energy over a broad range of pseudorapidities when effectively viewed in the rest frame of one of the colliding nuclei, a property we describe as "extended longitudinal scaling". Finally, the centrality and energy dependences of several observables were found to factorize to a surprising degree.

  16. sPHENIX: The next generation heavy ion detector at RHIC

    NASA Astrophysics Data System (ADS)

    Campbell, Sarah; sPHENIX Collaboration

    2017-04-01

    sPHENIX is a new collaboration and future detector project at Brookhaven National Laboratory’s Relativistic Heavy Ion Collider (RHIC). It seeks to answer fundamental questions on the nature of the quark gluon plasma (QGP), including its coupling strength and temperature dependence, by using a suite of precision jet and upsilon measurements that probe different length scales of the QGP. This is possible with a full acceptance, |η| < 1 and 0-2π in φ, electromagentic and hadronic calorimeters and precision tracking enabled by a 1.5 T superconducting magnet. With the increased luminosity afforded by accelerator upgrades, sPHENIX is going to perform high statistics measurements extending the kinematic reach at RHIC to overlap the LHC’s. This overlap is going to facilitate a better understanding of the role of temperature, density and parton virtuality in QGP dynamics and, specifically, jet quenching. This paper focuses on key future measurements and the current state of the sPHENIX project.

  17. The ERL-based Design of Electron-Hadron Collider eRHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Ptitsyn, Vadim

    2016-06-01

    Recent developments of the ERL-based design of future high-luminosity electron-hadron collider eRHIC focused on balancing technological risks present in the design versus the design cost. As a result a lower risk design has been adopted at moderate cost increase. The modifications include a change of the main linac RF frequency, reduced number of SRF cavity types and modified electron spin transport using a spin rotator. A luminosity-staged approach is being explored with a Nominal design (more » $$L \\sim 10^{33} {\\rm cm}^2 {\\rm s}^{-1}$$) that employs reduced electron current and could possibly be based on classical electron cooling, and then with the Ultimate design ($$L \\gt 10^{34} {\\rm cm}^{-2} {\\rm s}^{-1}$$) that uses higher electron current and an innovative cooling technique (CeC). The paper describes the recent design modifications, and presents the full status of the eRHIC ERL-based design.« less

  18. High-intensity polarized H- ion source for the RHIC SPIN physics

    NASA Astrophysics Data System (ADS)

    Zelenski, A.; Atoian, G.; Raparia, D.; Ritter, J.; Kolmogorov, A.; Davydenko, V.

    2017-08-01

    A novel polarization technique had been successfully implemented for the RHIC polarized H- ion source upgrade to higher intensity and polarization. In this technique a proton beam inside the high magnetic field solenoid is produced by ionization of the atomic hydrogen beam (from external source) in the He-gas ionizer cell. Further proton polarization is produced in the process of polarized electron capture from the optically-pumped Rb vapour. The use of high-brightness primary beam and large cross-sections of charge-exchange cross-sections resulted in production of high intensity H- ion beam of 85% polarization. High beam brightness and polarization resulted in 75% polarization at 23 GeV out of AGS and 60-65% beam polarization at 100-250 GeV colliding beams in RHIC. The status of un-polarized magnetron type (Cs-vapour loaded) BNL source is also discussed.

  19. RHIC on "How the Universe Works"

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Lisa, Mike

    2014-08-11

    If you want to know how the universe works, part of the answer lies in understanding the building blocks of matter—before they became inextricably bound within the protons, neutrons, and atoms that make up everything visible in our universe today. That’s why producers for the Science Channel’s documentary series “How the Universe Works” made a point of stopping by the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, where physicists recreate post-Big Bang “primal matter” millions of times each day. Learn about RHIC’s role in exploring the building blocks of matter by watching this segment.

  20. Recent Results from PHOBOS at Rhic

    NASA Astrophysics Data System (ADS)

    Garcia, Edmundo; Back, B. B.; Baker, M. D.; Ballintijn, M.; Barton, D. S.; Betts, R. R.; Bickley, A. A.; Bindel, R.; Busza, W.; Carroll, A.; Chai, Z.; Decowski, M. P.; Garcia, E.; Gburek, T.; George, N.; Gulbrandsen, K.; Halliwell, C.; Hamblen, J.; Hauer, M.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Hołyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Khan, N.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Reed, C.; Roland, C.; Roland, G.; Sagerer, J.; Seals, H.; Sedykh, I.; Smith, C. E.; Stankiewicz, M. A.; Steinberg, P.; Stephans, G. S. F.; Sukhanov, A.; Tonjes, M. B.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Vaurynovich, S. S.; Verdier, R.; Veres, G. I.; Wenger, E.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wysłouch, B.

    The PHOBOS detector is one of four heavy-ion experiments at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. In this paper we will review some of the results of PHOBOS from the data collected in p+p, d+Au and Au+Au collisions at nucleon-nucleon center-of-mass energies up to 200 GeV. In the most central Au+Au collisions at the highest energy, evidence is found for the formation of a very high energy density and highly interactive system, which can not be described in terms of hadrons, and which has a relatively low baryon density.

  1. Linear beam dynamics and ampere class superconducting RF cavities at RHIC

    NASA Astrophysics Data System (ADS)

    Calaga, Rama R.

    The Relativistic Heavy Ion Collider (RHIC) is a hadron collider designed to collide a range of ions from protons to gold. RHIC operations began in 2000 and has successfully completed five physics runs with several species including gold, deuteron, copper, and polarized protons. Linear optics and coupling are fundamental issues affecting the collider performance. Measurement and correction of optics and coupling are important to maximize the luminosity and sustain stable operation. A numerical approach, first developed at SLAC, was implemented to measure linear optics from coherent betatron oscillations generated by ac dipoles and recorded at multiple beam position monitors (BPMs) distributed around the collider. The approach is extended to a fully coupled 2D case and equivalence relationships between Hamiltonian and matrix formalisms are derived. Detailed measurements of the transverse coupling terms are carried out at RHIC and correction strategies are applied to compensate coupling both locally and globally. A statistical approach to determine BPM reliability and performance over the past three runs and future improvements also discussed. Aiming at a ten-fold increase in the average heavy-ion luminosity, electron cooling is the enabling technology for the next luminosity upgrade (RHIC II). Cooling gold ion beams at 100 GeV/nucleon requires an electron beam of approximately 54 MeV and a high average current in the range of 50-200 mA. All existing e-Coolers are based on low energy DC accelerators. The only viable option to generate high current, high energy, low emittance CW electron beam is through a superconducting energy-recovery linac (SC-ERL). In this option, an electron beam from a superconducting injector gun is accelerated using a high gradient (˜ 20 MV/m) superconducting RF (SRF) cavity. The electrons are returned back to the cavity with a 180° phase shift to recover the energy back into the cavity before being dumped. A design and development of a half

  2. "Upgraded" physics at the LHC and RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Llope, W. J.

    2017-09-03

    Closeout materials enclosed. This grant supported a postdoctoral scientist (S. Jowzaee) and the tuition for a graduate student (B. Erko), both working under the supervision of Prof. W.J. Llope at Wayne State University. Travel to a STAR Collaboration Meeting and the Quark Matter 2017 conference was also supported. The physics research concentrated on particle-identified two-particle correlations in the Beam Energy Scan data from the STAR experiment at RHIC. S. Jowzaee gave an oral presentation on this research at the Quark Matter 2017 conference.

  3. What kind of sQGP is the matter created at RHIC and LHC?

    NASA Astrophysics Data System (ADS)

    Liao, Jinfeng

    2011-10-01

    One of the main discoveries at RHIC is the so-called ``perfect fluid,'' and one of the most interesting things to see at LHC is whether and how such ``perfect fluid'' property will change at much higher collisional energies. I argue these will provide unique opportunity to answer theoretical question about the nature of sQGP. I will discuss two very different scenarios for the QGP in the temperature range from RHIC to LHC: (1) sQGP as a ``see-saw''-QGP of its electric and magnetic components, which is inspired by the deep and generic Electric-Magnetic duality in field theories; (2) sQGP as a super-strong-QGP, which may have a holographic dual in one form or another due to the strong coupling. The two scenarios predict different medium properties (viscosity, and opacity to hard probes) with increasing temperature from RHIC to LHC, therefore making them distinguishable at the upcoming LHC top energy PbPb collisions. The first hints of a possible change in created matter's structure at LHC 2.76TeV collisions as well as expectations for 5.5TeV collisions will be discussed. Supported under DOE Contract No. DE-AC02-98CH10886.

  4. ABORT GAP CLEANING IN RHIC.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    DREES,A.; AHRENS,L.; III FLILLER,R.

    2002-06-03

    During the RHIC Au-run in 2001 the 200 MHz storage cavity system was used for the first time. The rebucketing procedure caused significant beam debunching in addition to amplifying debunching due to other mechanisms. At the end of a four hour store, debunched beam could account for approximately 30%-40% of the total beam intensity. Some of it will be in the abort gap. In order to minimize the risk of magnet quenching due to uncontrolled beam losses at the time of a beam dump, a combination of a fast transverse kicker and copper collimators were used to clean the abortmore » gap. This report gives an overview of the gap cleaning procedure and the achieved performance.« less

  5. Polarization response of RHIC electron lens lattices

    DOE PAGES

    Ranjbar, V. H.; Méot, F.; Bai, M.; ...

    2016-10-10

    Depolarization response for a system of two orthogonal snakes at irrational tunes is studied in depth using lattice independent spin integration. Particularly, we consider the effect of overlapping spin resonances in this system, to understand the impact of phase, tune, relative location and threshold strengths of the spin resonances. Furthermore, these results are benchmarked and compared to two dimensional direct tracking results for the RHIC e-lens lattice and the standard lattice. We then consider the effect of longitudinal motion via chromatic scans using direct six dimensional lattice tracking.

  6. The PHOBOS experiment at the RHIC collider

    NASA Astrophysics Data System (ADS)

    Katzy, Judith M.; Back, B.; Baker, M. D.; Barton, D.; Betts, R.; Białas, A.; Budzanowski, A.; Busza, W.; Carroll, A.; Chang, Y.-H.; Chen, A. E.; Coghen, T.; Czyż, W.; Decowski, M. P.; Friedl, M.; Gałuszka, K.; Ganz, R.; Garcia-Solis, E.; George, N.; Godlewski, J.; Gulbrandsen, K. H.; Gushue, S.; Halliwell, C.; Hayes, A.; Heintzelman, G.; Hołyński, R.; Holzman, B.; Jagadish, U.; Johnson, E.; Kotuła, J.; Kucewicz, W.; Kulinich, P.; Lemler, M.; Lin, W. T.; Manly, S.; McLeod, D.; Michałowski, J.; Mignerey, A.; Mülmenstädt, J.; Neal, M.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I.; Pernegger, H.; Plesko, M.; Remsberg, L. P.; Reuter, M.; Roland, G.; Rosenberg, L.; Sarin, P.; Sawicki, P.; Stanskas, P. J.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Trzupek, A.; van Nieuwenhuizen, G.; Vale, C.; Verdier, R.; Wadsworth, B.; Wolfs, F.; Wosiek, B.; Woźniak, K.; Wuosmaa, A.; Wysłouch, B.; Zalewski, K.; Phobos Collaboration

    1999-12-01

    PHOBOS is one of four experiments at the Relativistic Heavy Ion Collider (RHIC), scheduled to start data collection in fall 1999. Its main goal is to collect events using minimum bias triggers. A search will then be made for interesting, and perhaps rare, classes of events that may indicate the formation of a quark gluon plasma (QGP) or the restoration of chiral symmetry. In this report we describe the PHOBOS detector design and present the first results in detector development. We will also present our expectations from the first year of operation.

  7. Proceedings of RIKEN BNL Resarch Center Workshop: Fluctuations, Correlations and RHIC Low Energy Runs

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Karsch, F.; Kojo, T.; Mukherjee, S.

    Most of our visible universe is made up of hadronic matter. Quantum Chromodynamics (QCD) is the theory of strong interaction that describes the hadronic matter. However, QCD predicts that at high enough temperatures and/or densities ordinary hadronic matter ceases to exist and a new form of matter is created, the so-called Quark Gluon Plasma (QGP). Non-perturbative lattice QCD simulations shows that for high temperature and small densities the transition from the hadronic to the QCD matter is not an actual phase transition, rather it takes place via a rapid crossover. On the other hand, it is generally believed that atmore » zero temperature and high densities such a transition is an actual first order phase transition. Thus, in the temperature-density phase diagram of QCD, the first order phase transition line emanating from the zero temperature high density region ends at some higher temperature where the transition becomes a crossover. The point at which the first order transition line turns into a crossover is a second order phase transition point belonging to three dimensional Ising universality class. This point is known as the QCD Critical End Point (CEP). For the last couple of years the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory has been performing experiments at lower energies in search of the elusive QCD CEP. In general critical behaviors are manifested through appearance of long range correlations and increasing fluctuations associated with the presence of mass-less modes in the vicinity of a second order phase transition. Experimental signatures of the CEP are likely to be found in observables related to fluctuations and correlations. Thus, one of the major focuses of the RHIC low energy scan program is to measure various experimental observables connected to fluctuations and correlations. On the other hand, with the start of the RHIC low energy scan program, a flurry of activities are taking place to provide solid

  8. Longitudinal emittance measurements in the Booster and AGS during the 2014 RHIC gold run

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Zeno, K.

    2014-08-18

    This note describes longitudinal emittance measurements that were made in the Booster and AGS during the 2014 RHIC Gold run. It also contains an overview of the longitudinal aspects of their setup during this run. Each bunch intended for RHIC is composed of beam from 4 Booster cycles, and there are two of them per AGS cycle. For each of the 8 Booster cycles required to produce the 2 bunches in the AGS, a beam pulse from EVIS is injected into the Booster and captured in four h=4 buckets. Then those bunches are accelerated to a porch where they aremore » merged into 2 bunches and then into 1 bunch.« less

  9. Industrial production of RHIC magnets

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Anerella, M.D.; Fisher, D.H.; Sheedy, E.

    1996-07-01

    RHIC 8 cm aperture dipole magnets and quadrupole cold masses are being built for Brookhaven National Laboratory (BNL) by Northrop Grumman Corporation at a production rate of one dipole magnet and two quadrupole cold masses per day. This work was preceded by a lengthy Technology Transfer effort which is described elsewhere. This paper describes the tooling which is being used for the construction effort, the production operations at each workstation, and also the use of trend plots of critical construction parameters as a tool for monitoring performance in production. A report on the improvements to production labor since the startmore » of the programs is also provided. The magnet and cold mass designs, and magnetic test results are described in more detail in a separate paper.« less

  10. Elliptic flow in Au+Au collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Vale, Carla M.; PHOBOS Collaboration; Back, B. B.; Baker, M. D.; Ballintijn, M.; Barton, D. S.; Betts, R. R.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; García, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Holynski, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Mignerey, A. C.; Ngyuen, M.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steinberg, P.; Stephans, G. S. F.; Sukhanov, A.; Tang, J.-L.; Tonjes, M. B.; Trzupek, A.; van Nieuwenhuizen, G. J.; Verdier, R.; Veres, G.; Wolfs, F. L. H.; Wosiek, B.; Wozniak, K.; Wuosmaa, A. H.; Wyslouch, B.

    2005-04-01

    Elliptic flow is an interesting probe of the dynamical evolution of the dense system formed in the ultrarelativistic heavy ion collisions at the relativistic heavy ion collider (RHIC). The elliptic flow dependences on transverse momentum, centrality and pseudorapidity were measured using data collected by the PHOBOS detector, which offers a unique opportunity to study the azimuthal anisotropies of charged particles over a wide range of pseudorapidity. These measurements are presented, together with an overview of the analysis methods and a discussion of the results.

  11. Simulations of Gaussian electron guns for RHIC electron lens

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Pikin, A.

    Simulations of two versions of the electron gun for RHIC electron lens are presented. The electron guns have to generate an electron beam with Gaussian radial profile of the electron beam density. To achieve the Gaussian electron emission profile on the cathode we used a combination of the gun electrodes and shaping of the cathode surface. Dependence of electron gun performance parameters on the geometry of electrodes and the margins for electrodes positioning are presented.

  12. RHIC on "How the Universe Works"

    ScienceCinema

    Lisa, Mike

    2018-05-30

    If you want to know how the universe works, part of the answer lies in understanding the building blocks of matter—before they became inextricably bound within the protons, neutrons, and atoms that make up everything visible in our universe today. That’s why producers for the Science Channel’s documentary series “How the Universe Works” made a point of stopping by the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, where physicists recreate post-Big Bang “primal matter” millions of times each day. Learn about RHIC’s role in exploring the building blocks of matter by watching this segment.

  13. Viscous Flow in Heavy-Ion Collisions from RHIC to LHC

    NASA Astrophysics Data System (ADS)

    Shen, Chun; Heinz, Ulrich

    2013-05-01

    We present a systematic hydrodynamic study of the evolution of hadron spectra and their azimuthal anisotropy from the lowest collision energy studied at the Relativistic Heavy Ion Collider (RHIC), s=7.7A GeV, to the highest energy reachable at the Large Hadron Collider (LHC), s=5500A GeV [C. Shen and U. Heinz, Phys. Rev. C 85, 054902 (2012) [arXiv:1202.6620 [nucl-th

  14. Proof of factorization of χ _{cJ} production in non-equilibrium QCD at RHIC and LHC in color singlet mechanism

    NASA Astrophysics Data System (ADS)

    Nayak, Gouranga C.

    2017-12-01

    Recently we have proved the factorization of NRQCD S-wave heavy quarkonium production at all orders in coupling constant. In this paper we extend this to prove the factorization of infrared divergences in χ _{cJ} production from color singlet c{\\bar{c}} pair in non-equilibrium QCD at RHIC and LHC at all orders in coupling constant. This can be relevant to study the quark-gluon plasma at RHIC and LHC.

  15. PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP, VOLUME 57, HIGH PT PHYSICS AT RHIC, DECEMBER 2-6, 2003

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Kretzer, Stefan; Venugopalan, Raju; Vogelsang, Werner

    The AuAu, dAu, and pp collision modes of the RHIC collider at BNL have led to the publication of exciting high p{perpendicular} particle production data. There have also been two physics runs with polarized protons, and preliminary results on the double-spin asymmetry for pion production had been presented very recently. The ontological questions behind these measurements are fascinating: Did RHIC collisions create a Quark-Gluon-Plasma phase and did they verify the Color Glass Condensate as the high energy limit of QCD? Will the Spin Crisis finally be resolved in terms of gluon polarization and what new surprises are we yet tomore » meet for Transverse Spin? Phenomena related to sub-microscopic questions as important as these call for interpretations that are footed in solid theory. At large p{perpendicular}, perturbative concepts are legitimately expected to provide useful approaches. The corresponding hard parton dynamics are, in several ways, key to unraveling the initial or final state and collisional phase of hard scattering events in vacuum as well as in hot or cold nuclear matter. Before the advent of RHIC data, a RIKEN-BNL workshop had been held at BNL in March 1999 on ''Hard Parton Physics in High Energy Nuclear Collisions''. The 2003 workshop on ''High p{perpendicular} Physics at RHIC'' was a logical continuation of this previous workshop. It gave the opportunity to revisit the 1999 expectations in the light of what has been found in the meantime and, at the same time, to critically discuss the underlying theoretical concepts. We brought together theorists who have done seminal work on the foundations of parton phenomenology in field theory, with theorists and experimentalists who are presently working on RHIC phenomenology. The participants were both from a high-energy physics and nuclear physics background and it remains only to be said here that this chemistry worked perfectly and the workshop was a great success.« less

  16. Dissipation and momentum anisotropy in heavy-ion collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Molnar, Denes; Pasi, Huovinen

    2004-04-01

    Dissipation and momentum anisotropy in heavy-ion collisions at RHIC Recent data from RHIC for Au+Au reactions at E_cm ˜ 130-200 GeV / nucleon show a large anisotropy of particle production in the transverse plane, characterized by the elliptic flow coefficient v2(pT). The anisotropy can be reproduced from ideal hydrodynamics[1], providing a strong argument for rapid thermalization in these reactions. On the other hand, parton kinetic theory[2] can also reproduce the data, if the system is an order of magnitude more opaque than a perturbative parton plasma. A common belief is that the kinetic theory calculation demonstrated the kinetic equilibration of the dense parton plasma. I show that this is not the case because dissipative effects are large even at such extreme opacities. Nevertheless both theories could reproduce the data because of differences in their sets of assumptions. [1] P. Huovinen et al., PLB 503, 58 (2001); P.F. Kolb, J. Sollfrank and U.W. Heinz, PRC 62, 054909 (2000); D. Teaney, J. Lauret and E.V. Shuryak, nucl-th/0110037. [2] D. Molnar and M. Gyulassy, NPA697, 495 (2002); A703, 893(E) (2002); B. Zhang, M. Gyulassy and C.M. Ko, PLB 455, 45 (1999).

  17. Enhancing RHIC luminosity capabilities with in-situ beam piple coating

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Herschcovitch,A.; Blaskiewicz, M.; Fischer, W.

    Electron clouds have been observed in many accelerators, including the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven National Laboratory (BNL). They can limit the machine performance through pressure degradation, beam instabilities or incoherent emittance growth. The formation of electron clouds can be suppressed with beam pipe surfaces that have low secondary electron yield. At the same time, high wall resistivity in accelerators can result in levels of ohmic heating unacceptably high for superconducting magnets. This is a concern for the RHIC machine, as its vacuum chamber in the superconducting dipoles is made from relatively high resistivity 316LN stainless steel.more » The high resistivity can be addressed with a copper (Cu) coating; a reduction in the secondary electron yield can be achieved with a titanium nitride (TiN) or amorphous carbon (a-C) coating. Applying such coatings in an already constructed machine is rather challenging. We started developing a robotic plasma deposition technique for in-situ coating of long, small diameter tubes. The technique entails fabricating a device comprised of staged magnetrons and/or cathodic arcs mounted on a mobile mole for deposition of about 5 {micro}m (a few skin depths) of Cu followed by about 0.1 {micro}m of TiN (or a-C).« less

  18. Measurement and simulation of the RHIC abort kicker longitudinal impedence

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Abreu,N.P.; Hahn,H.; Choi, E.

    2009-09-01

    In face of the new upgrades for RHIC the longitudinal impedance of the machine plays an important role in setting the threshold for instabilities and the efficacy of some systems. In this paper we describe the measurement of the longitudinal impedance of the abort kicker for RHIC as well as computer simulations of the structure. The impedance measurement was done by the S{sub 21} wire method covering the frequency range from 9 kHz to 2.5 GHz. We observed a sharp resonance peak around 10 MHz and a broader peak around 20 MHz in both, the real and imaginary part, ofmore » the Z/n. These two peaks account for a maximum imaginary longitudinal impedance of j15 {Omega}, a value an order of magnitude larger than the estimated value of j0.2 {Omega}, which indicates that the kicker is one of the main sources of longitudinal impedance in the machine. A computer model was constructed for simulations in the CST MWS program. Results for the magnet input and the also the beam impedance are compared to the measurements. A more detail study of the system properties and possible changes to reduce the coupling impedance are presented.« less

  19. Central exclusive production at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Adamczyk, Leszek; Guryn, Włodek; Turnau, Jacek

    The present status and future plans of the physics program of Central Exclusive Production (CEP) at RHIC are described. The measurements are based on the detection of the forward protons from the Double Pomeron Exchange (DPE) process in the Roman Pot system and of the recoil system of charged particles from the DPE process measured in the STAR experiment’s Time Projection Chamber (TPC). The data described here were taken using polarized proton-proton collisions at ps = 200 GeV. The preliminary spectra of two pion and four pion invariant mass reconstructed by STAR TPC in central region of pseudo-rapidity | |more » < 1, are presented. Near future plans to take data with the current system at center-of-mass energy ps = 200 GeV and plans to upgrade the forward proton tagging sys- tem are presented. Also a possible addition of the Roman Pots to the sPHENIX detector is discussed.« less

  20. Shooting string holography of jet quenching at RHIC and LHC

    DOE PAGES

    Ficnar, Andrej; Gubser, Steven S.; Gyulassy, Miklos

    2014-10-13

    We derive a new formula for jet energy loss using finite endpoint momentum shooting strings initial conditions in SYM plasmas to overcome the difficulties of previous falling string holographic scenarios. We apply the new formula to compute the nuclear modification factor R AA and the elliptic flow parameter v 2 of light hadrons at RHIC and LHC. We show furthermore that Gauss–Bonnet quadratic curvature corrections to the AdS 5 geometry improve the agreement with the recent data.

  1. Shooting string holography of jet quenching at RHIC and LHC

    NASA Astrophysics Data System (ADS)

    Ficnar, Andrej; Gubser, Steven S.; Gyulassy, Miklos

    2014-11-01

    We derive a new formula for jet energy loss using finite endpoint momentum shooting strings initial conditions in SYM plasmas to overcome the difficulties of previous falling string holographic scenarios. We apply the new formula to compute the nuclear modification factor RAA and the elliptic flow parameter v2 of light hadrons at RHIC and LHC. We show furthermore that Gauss-Bonnet quadratic curvature corrections to the AdS5 geometry improve the agreement with the recent data.

  2. Flow and bose-einstein correlations in Au-Au collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Phobos Collaboration; Manly, Steven; Back, B. B.; Baker, M. D.; Barton, D. S.; Betts, R. R.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; Garcia, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Henderson, C.; Hofman, D.; Hollis, R. S.; Hołyinski, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Michałowski, J.; Mignerey, A.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S. G.; Steinberg, P.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysłouch, B.

    2003-03-01

    Argonne flow and Bose-Einstein correlations have been measured in Au-Au collisions at S=130 and 200 GeV using the PHOBOS detector at RHIC. The systematic dependencies of the flow signal on the transverse momentum, pseudorapidity, and centrality of the collision, as well as the beam energy are shown. In addition, results of a 3-dimensional analysis of two-pion correlations in the 200 GeV data are presented.

  3. First results from the PHOBOS experiment at RHIC

    NASA Astrophysics Data System (ADS)

    Wuosmaa, A. H.; Back, B. B.; Baker, M. D.; Barton, D. S.; Basilev, S.; Bates, B. D.; Baum, R.; Betts, R. R.; Białas, A.; Bindel, R.; Bogucki, W.; Budzanowski, A.; Busza, W.; Carroll, A.; Ceglia, M.; Chang, Y.-H.; Chen, A. E.; Coghen, T.; Conner, C.; Czyz, W.; Dabrowski, B.; Decowski, M. P.; Despet, M.; Fita, P.; Fitch, J.; Friedl, M.; Galuska, K.; Ganz, R.; Garcia, E.; George, N.; Godlewski, J.; Gomes, C.; Griesmayer, E.; Gulbrandsen, K.; Gushue, S.; Halik, J.; Halliwell, C.; Haridas, P.; Hayes, A.; Heintzelman, G. A.; Henderson, C.; Hollis, R.; Hołynski, R.; Holzman, B.; Johnson, E.; Kane, J.; Katzy, J.; Kita, W.; Kotuła, J.; Kraner, H.; Kucewicz, W.; Kulinich, P.; Law, C.; Lemler, M.; Ligocki, J.; Lin, W. T.; Manly, S.; McCleod, D.; Michałowski, J.; Mignerey, A.; Mülmenstädt, J.; Neal, M.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Patel, M.; Pernegger, H.; Plesko, M.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Ross, D.; Rosenberg, L.; Ryan, J.; Sanzgiri, A.; Sarin, P.; Sawicki, P.; Scaduto, J.; Shea, J.; Sinacore, J.; Skulski, W.; Steadman, S. G.; Stephans, G. S. F.; Steinberg, P.; Straczek, A.; Stodulski, M.; Strek, M.; Stopa, Z.; Sukhanov, A.; Surowiecka, K.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Wozniak, K.; Wuosmaa, A. H.; Wysłouch, B.; Zalewski, K.; Zychowski, P.

    2001-07-01

    The PHOBOS experiment at RHIC has measured the charged-particle density dN/dη at mid-rapidity for central Au+Au collisions at center of mass energies of √sNN =56, and 130 GeV. We deduce that dN/dη=408±12(stat)±30(syst) and 555±12(stat)±35(syst) for collision energies of 56 GeV and 130 GeV, respectively. These numbers suggest energy densities that are some 70% higher than have been achieved in any heavy-ion collisions previously studied, and also 25-40% higher than nucleon-nucleon collisions at comparable center of mass energies.

  4. RHIC and LHC Phenomena with a Unified Parton Transport

    NASA Astrophysics Data System (ADS)

    Bouras, Ioannis; El, Andrej; Fochler, Oliver; Reining, Felix; Senzel, Florian; Uphoff, Jan; Wesp, Christian; Xu, Zhe; Greiner, Carsten

    We discuss recent applications of the partonic pQCD based cascade model BAMPS with focus on heavy-ion phenomeneology in hard and soft momentum range. The nuclear modification factor as well as elliptic flow are calculated in BAMPS for RHIC end LHC energies. These observables are also discussed within the same framework for charm and bottom quarks. Contributing to the recent jet-quenching investigations we present first preliminary results on application of jet reconstruction algorithms in BAMPS. Finally, collective effects induced by jets are investigated: we demonstrate the development of Mach cones in ideal matter as well in the highly viscous regime.

  5. RHIC and LHC phenomena with an unified parton transport

    NASA Astrophysics Data System (ADS)

    Bouras, Ioannis; El, Andrej; Fochler, Oliver; Reining, Felix; Senzel, Florian; Uphoff, Jan; Wesp, Christian; Xu, Zhe; Greiner, Carsten

    2012-11-01

    We discuss recent applications of the partonic pQCD based cascade model BAMPS with focus on heavy-ion phenomeneology in hard and soft momentum range. The nuclear modification factor as well as elliptic flow are calculated in BAMPS for RHIC end LHC energies. These observables are also discussed within the same framework for charm and bottom quarks. Contributing to the recent jet-quenching investigations we present first preliminary results on application of jet reconstruction algorithms in BAMPS. Finally, collective effects induced by jets are investigated: we demonstrate the development of Mach cones in ideal matter as well in the highly viscous regime.

  6. Fluctuations with small numbers: Developing the perturbative paradigm for jet physics in the QGP at RHIC and LHC

    NASA Astrophysics Data System (ADS)

    Wicks, Simon

    Many novel results have emerged from the experimental heavy ion program at the Relativistic Heavy Ion Collider. For some, these necessitate a new paradigm, a jump into the extra dimension of strongly coupled physics and AdS/CFT. This thesis takes the opposite view. Asymptotic weakly coupled arguments are of course inapplicable. Purely parametric relations are not sufficient as the temperatures are not hot enough, the jet energies not high enough, the lengths not long enough. However, perturbative techniques provide a strong foundation on which to build our explanations of data from RHIC and the upcoming LHC. This thesis presents the first detailed study of both collisional and radiative energy losses, applied to both light and heavy partonic jets at RHIC and LHC. The primary motivation is the heavy quark puzzle, observed through the surprisingly strong quenching of high momentum single non-photonic electrons at RHIC. Collisional energy loss is likely a non-negligible component of the energy loss of jets. It also provides a calculation in which to examine our assumptions about jet-medium interactions. For the quantities of interest, the soft interactions o, q << T are not dominant; the rarer, moderately hard collisions are more important. This impacts the choice of one collision calculation---a simple, first term in a hard thermal loop calculation does not include the necessary medium recoil kinematics---and of the multiple collision convolution---a simple, drag-diffusion scheme is insufficient for the short lengths of interest. This also motivates an opacity expansion evaluation of the radiative energy loss. This expansion is equivalent to Schrodinger-like equations used in some radiative models, and provides a suitable method of numerical solution to that equation. Presented here is a Monte Carlo numerical integration that can give results to ninth order in opacity and beyond. The results confirm that, for the lengths of interest at RHIC and LHC, the first order

  7. FY2014 Parameters for Helions and Gold Ions in Booster, AGS, and RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Gardner, C. J.

    The nominal parameters for helions (helion is the bound state of two protons and one neutron, the nucleus of a helium-3 atom) and gold ions in Booster, AGS, and RHIC are given for the FY2014 running period. The parameters are found using various formulas to derive mass, helion anomalous g-factor, kinetic parameters, RF parameters, ring parameters, etc..

  8. End-to-end 9-D polarized bunch transport in eRHIC energy-recovery recirculator, some aspects

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Meot, F.; Meot, F.; Brooks, S.

    2015-05-03

    This paper is a brief overview of some of the numerous beam and spin dynamics investigations undertaken in the framework of the design of the FFAG based electron energy recovery re-circulator ring of the eRHIC electron-ion collider project

  9. Noise estimation of beam position monitors at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Shen, X.; Bai, M.; Lee, S. Y.

    2014-02-10

    Beam position monitors (BPM) are used to record the average orbits and transverse turn-by-turn displacements of the beam centroid motion. The Relativistic Hadron Ion Collider (RHIC) has 160 BPMs for each plane in each of the Blue and Yellow rings: 72 dual-plane BPMs in the insertion regions (IR) and 176 single-plane modules in the arcs. Each BPM is able to acquire 1024 or 4096 consecutive turn-by-turn beam positions. Inevitably, there are broadband noisy signals in the turn-by-turn data due to BPM electronics as well as other sources. A detailed study of the BPM noise performance is critical for reliable opticsmore » measurement and beam dynamics analysis based on turn-by-turn data.« less

  10. GAS DISCHARGE SWITCH EVALUATION FOR RHIC BEAM ABORT KICKER APPLICATION.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    ZHANG,W.; SANDBERG,J.; SHELDRAKE,R.

    2002-06-30

    A gas discharge switch EEV HX3002 is being evaluated at Brookhaven National Laboratory as a possible candidate of RHIC Beam Abort Kicker modulator main switch. At higher beam energy and higher beam intensity, the switch stability becomes very crucial. The hollow anode thyratron used in the existing system is not rated for long reverse current conduction. The reverse voltage arcing caused thyratron hold-off voltage de-rating has been the main limitation of the system operation. To improve the system reliability, a new type of gas discharge switch has been suggested by Marconi Applied Technology for its reverse conducting capability.

  11. Design and test of the RHIC CMD10 abort kicker

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hahn, H.; Blaskiewicz, M.; Drees, A.

    2015-05-03

    In recent RHIC operational runs, planned and unplanned pre-fire triggered beam aborts have been observed that resulted in quenches of SC main ring magnets, indicating a weakened magnet kick strength due to beam-induced ferrite heating. An improvement program was initiated to reduce the longitudinal coupling impedance with changes to the ferrite material and the eddy-current strip geometry. Results of the impedance measurements and of magnet heating tests with CMD10 ferrite up to 190°C are reported. All 10 abort kickers in the tunnel have been modified and were provided with a cooling system for the RUN 15.

  12. A letter of intent for an experiment to study strong electromagnetic fields at RHIC via multiple electromagnetic processes

    NASA Technical Reports Server (NTRS)

    Fatyga, M.; Norbury, John W.

    1992-01-01

    An experimental program at the Relativistic Heavy Ion Collider (RHIC) which is designed to study nonperturbative aspects of electrodynamics is outlined. Additional possibilities for new studies of electrodynamics via multiple electromagnetic processes are also described.

  13. Photoproduction of lepton pairs in proton-nucleus and nucleus-nucleus collisions at RHIC and LHC energies

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Moreira, B. D.; Goncalves, V. P.; De Santana Amaral, J. T.

    2013-03-25

    In this contribution we study coherent interactions as a probe of the nonlinear effects in the Quantum Electrodynamics (QED). In particular, we study the multiphoton effects in the production of leptons pairs for proton-nucleus and nucleus-nucleus collisions for heavy nuclei. In the proton-nucleus we assume the ultrarelativistic proton as a source of photons and estimate the photoproduction of lepton pairs on nuclei at RHIC and LHC energies considering the multiphoton effects associated to multiple rescattering of the projectile photon on the proton of the nucleus. In nucleus - nucleus colllisions we consider the two nuclei as a source of photons.more » As each scattering contributes with a factor {alpha}Z to the cross section, this contribution must be taken into account for heavy nuclei. We consider the Coulomb corrections to calculate themultiple scatterings and estimate the total cross section for muon and tau pair production in proton-nucleus and nucleus-nucleus collisions at RHIC and LHC energies.« less

  14. Percutaneous pedicle screw fixation through the pedicle of fractured vertebra in the treatment of type A thoracolumbar fractures using Sextant system: an analysis of 38 cases.

    PubMed

    Wang, Hong-wei; Li, Chang-qing; Zhou, Yue; Zhang, Zheng-feng; Wang, Jian; Chu, Tong-wei

    2010-06-01

    To prospectively evaluate the feasibility, safety and efficacy of the percutaneous pedicle screw fixation through the pedicle of fractured vertebra in the treatment of type A thoracolumbar fractures using Sextant system in the retrospective non-randomized case-control study. A total of 38 consecutive non-randomized patients with type A thoracolumbar fractures, which had been stabilized posteriorly from December 2006 to March 2009, were examined retrospectively more than 9 months after surgery. Twenty-one patients had been treated conventionally with open pedicle screw fixation (OPSF) and 17 patients received minimally invasive treatment with Sextant percutaneous pedicle screw fixation (SPPSF). As a method of evaluation, the incision size, the intraoperation and postoperative volume of blood loss, operation time, postoperative hospital stay, blood transfusion, the radiological assessment of the sagittal Cobb;s angle, vertebral body angle and vertebral body height were recorded and compared. All patients were followed up for 8-24 months (average 11.6 months). There were significant differences in the incision size, surgical blood loss, surgical draining loss, operation time, hospital stay after operation, blood transfusion, the proportion of antalgic supplement and postoperative incisional VAS between the two groups (P less than 0.05). Mean preoperative kyphotic deformity was 16.0 degree and improved by 9.3 degree after surgery in OPSF group, but 15.2 degree and 10.3 degree respectively in SPPSF group. Mean preoperative angle of the fractured vertebral body was 15.9 degree and improved by 7.9 degree after surgery in OPSF group, but 14.9 degree and 6.6 degree respectively in SPPSF group. Mean anterior vertebral body height (% of normal) was 67.3% before surgery and 95.8% after surgery, but 69.1% and 90.1% respectively in SPPSF group. Mean posterior vertebral body height (% of normal) was 93.3% before surgery and 99.5% after surgery, but 88.9% and 93.3% respectively in

  15. New capabilities in the HENP grand challenge storage access systemand its application at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Bernardo, L.; Gibbard, B.; Malon, D.

    2000-04-25

    The High Energy and Nuclear Physics Data Access GrandChallenge project has developed an optimizing storage access softwaresystem that was prototyped at RHIC. It is currently undergoingintegration with the STAR experiment in preparation for data taking thatstarts in mid-2000. The behavior and lessons learned in the RHIC MockData Challenge exercises are described as well as the observedperformance under conditions designed to characterize scalability. Up to250 simultaneous queries were tested and up to 10 million events across 7event components were involved in these queries. The system coordinatesthe staging of "bundles" of files from the HPSS tape system, so that allthe needed componentsmore » of each event are in disk cache when accessed bythe application software. The caching policy algorithm for thecoordinated bundle staging is described in the paper. The initialprototype implementation interfaced to the Objectivity/DB. In this latestversion, it evolved to work with arbitrary files and use CORBA interfacesto the tag database and file catalog services. The interface to the tagdatabase and the MySQL-based file catalog services used by STAR aredescribed along with the planned usage scenarios.« less

  16. Highlights from PHENIX at RHIC

    NASA Astrophysics Data System (ADS)

    Nouicer, Rachid

    2018-02-01

    Hadrons conveying strange quarks or heavy quarks are essential probes of the hot and dense medium created in relativistic heavy-ion collisions. With hidden strangeness, ϕ meson production and its transport in the nuclear medium have attracted high interest since its discovery. Heavy quark-antiquark pairs, like charmonium and bottomonium mesons, are mainly produced in initial hard scattering processes of partons. While some of the produced pairs form bound quarkonia, the vast majority hadronize into particles carrying open heavy flavor. In this context, the PHENIX collaboration carries out a comprehensive physics program which studies the ϕ meson production, and heavy flavor production in relativistic heavy-ion collisions at RHIC. In recent years, the PHENIX experiment upgraded the detector in installing silicon vertex tracker (VTX) at mid-rapidity region and forward silicon vertex tracker (FVTX) at the forward rapidity region. With these new upgrades, the experiment has collected large data samples, and enhanced the capability of heavy flavor measurements via precision tracking. This paper summarizes the latest PHENIX results concerning ϕ meson, open and closed charm and beauty heavy quark production in relativistic heavy-ion collisions. These results are presented as a function of rapidity, energy and system size, and their interpretation with respect to the current theoretical understanding.

  17. Experimental Highlights: Heavy Quark Physics in Heavy-Ion Collisions at RHIC

    DOE PAGES

    Nouicer, Rachid

    2017-03-22

    The discovery at RHIC of large high-p T suppression and flow of electrons from heavy quarks flavors have altered our view of the hot and dense matter formed in central Au + Au collisions at √s NN = 200 GeV. These results suggest a large energy loss and flow of heavy quarks in the hot, dense matter. In recent years, the RHIC experiments upgraded the detectors; (1) PHENIX Collaboration installed silicon vertex tracker (VTX) at midrapidity region and forward silicon vertex tracker (FVTX) at the forward rapidity region, and (2) STAR Collaboration installed the heavy flavor tracker (HFT) and themore » muon telescope detector (MTD) both at the mid-rapidity region. The PHENIX experiments established measurements of ψ (1S ) and ψ (2S ) production as a function of system size, p + p, p + Al, p + Au, and 3He + Au collisions at √s NN = 200 GeV. In p/ 3He + A collisions at forward rapidity, we observe no difference in the ψ (2S )/ψ (1S ) ratio relative to p + p collisions. At backward rapidity, where the comoving particle density is higher, we find that the ψ (2S ) is preferentially suppressed by a factor of two. STAR Collaboration presents the first J/ ψ measurements in the di-muon decay channel in Au + Au at √s NN = 200 GeV at mid-rapidity. In conclusion, we observe a clear J/ψ R AA suppression and qualitatively well described by transport models, including dissociation and regeneration simultaneously.« less

  18. Beam Energy Scan on Hypertriton Production and Lifetime Measurement at RHIC STAR

    NASA Astrophysics Data System (ADS)

    Zhu, Yuhui

    2013-05-01

    We report preliminary results on HΛ3 production in Au + Au collisions at RHIC at s=7.7, 11.5, 19.6, 27, 39, and 200 GeV. The beam energy dependence of strangeness population factor HΛ3/3HeΛ/p is shown and the result indicates that HΛ3/3HeΛ/p has an increasing trend with 1.7σ significance. The hypertriton lifetime combining the above Au + Au collision data set is measured to be 123±2226(stat)±10(sys) ps.

  19. Systematics of Charged Particle Production in Heavy-Ion Collisions with the PHOBOS Detector at Rhic

    NASA Astrophysics Data System (ADS)

    Steinberg, Peter A.; Back, B. B.; Baker, M. D.; Barton, D. S.; Betts, R. R.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Corbo, J.; Decowski, M. P.; Garcia, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Henderson, C.; Hicks, D.; Hofman, D.; Hollis, R. S.; Hołyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Michałowski, J.; Mignerey, A.; Mülmenstädt, J.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Rafelski, M.; Rbeiz, M.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S. G.; Steinberg, P.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysłouch, B.

    2002-03-01

    The multiplicity of charged particles produced in Au+Au collisions as a function of energy, centrality, rapidity and azimuthal angle has been measured with the PHOBOS detector at RHIC. These results contribute to our understanding of the initial state of heavy ion collisions and provide a means to compare basic features of particle production in nuclear collisions with more elementary systems.

  20. Pentaquark Search with STAR at RHIC

    NASA Astrophysics Data System (ADS)

    Salur, Sevil

    2004-05-01

    Several observations of a five-quark bound system, pentaquarks, from various experiments in photon-nucleus, kaon-nucleus, and proton-proton reactions have been reported*. The presence of these states was predicted by Diakonov at al. using chiral soliton models of baryons in 1997. ** The high energies and particle densities resulting from collisions at RHIC are expected to favor pentaquark production. The large acceptance of STAR's Time Projection Chamber is ideal for such rare particle searches. The short lifetimes predicted for pentaquarks require that a mixing technique be used to reconstruct the pentaquarks via their decay products. This technique has already been used successfully by STAR to reconstruct and study short-lived resonances. We report on the progress of the pentaquark search by the STAR collaboration in pp, dAu, and AuAu collisions through one of the decay modes, Θ^+arrow p+K^0. *T.Nakano et al. (LEPS Collaboration) Phys. Rev. Lett. 91, 0122002(2003) *S.Stepanyan et al. (CLAS Collaboration) hep-exp/0307018 *V.V.Barmin at al. (DIANA Collaboration) hep-exp/0304040 **D. Diakonov, V. Petrov and M. Polakov Z.Phys. A359 (1997) 305-314

  1. Investigation of the radiation background in the interaction region of the medium-energy electron relativisitic heavy ion collider (MeRHIC)

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Beebe-Wang,J.

    There are three main sources of the radiation background in MeRHIC: forward synchrotron radiation generated upstream of the detector, the direct backward radiation caused by the photons hitting beampipe downstream of the detector, and the indirect secondary radiation caused by hard photons hitting vacuum systems, masks, collimators, absorbers or any other elements in the interaction region. In this paper, we first calculate the primary radiation distribution by employing electromagnetic theory. Then we obtain the direct backward scattering rate by applying the kinematic Born approximation deduced from scattering dynamics. The diffuse scattering cross section is calculated as a function of themore » surface properties of the MeRHIC vacuum system. Finally, the dominating physical processes and minimization of indirect secondary radiation is presented and discussed.« less

  2. Results from the RHIC energy scan and prospects for the future

    NASA Astrophysics Data System (ADS)

    Cebra, Daniel

    2016-03-01

    Collisions between relativistic heavy-ions are energetic enough to vaporize the participating neutrons and protons creating an equilibrated plasma of quarks and gluons which is understood to be similar to the state of the universe about one microsecond after the big bang. This deconfined, partonic phase has been well established an the top energies available at the Relativistic Heavy Ion Collider (RHIC). Although progress has been made in understanding the nature of hot dense QCD matter, there are still important open questions about how the matter undergoes the transition between a quark-gluon plasma and a hot hadronic gas. If the plasma has an equal mix of quarks and anti-quarks, lattice QCD calculations now tell us that there will be a crossover transition. However, in heavy-ion collisions, systems are created with an excess of quarks. The degree of the quark excess (measured as baryon chemical potential) is determined by the collision energy. Under high baryon chemical potential conditions, we expect a first order phase transition. The termination of the first order phase transition boundary will be a critical point. RHIC has performed a scan of several beam energies in order to map the QCD matter phase diagram as a function of baryon chemical potential. Features of the phase diagram and becoming evident, however more data are needed to clarify the picture. Upgrades to both the collider and the detectors are being undertaken. These will allow a more focused and refined follow-up energy scan in 2019 and 2020. This material is based upon work supported by the National Science Foundation under Grant No. 1404281.

  3. Study of Charm and Beauty using electron-D{sup 0} azimuthal correlations in the STAR experiment at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Kabana, Sonia

    The energy loss of heavy quarks in the hot and dense matter created in high-energy nuclear collisions at RHIC, can be used to probe the properties of the medium. Both charm and beauty quarks contribute to the non-photonic electrons through their semi-leptonic decays. It is essential to determine experimentally the relative contributions of charm and beauty quarks to understand the observed suppression of non-photonic electrons at high p{sub T} in central Au+Au collisions. The azimuthal angular correlations of non-photonic electrons with hadrons as well as with the reconstructed D{sup 0} allow to disentangle the contributions of charm and beauty tomore » the electron spectrum. We discuss the STAR measurement of non-photonic electron-D{sup 0} and non-photonic electron-hadron azimuthal correlations in p+p collisions at 200 GeV and explore the consequences for the heavy flavour suppression in heavy ion collisions at RHIC.« less

  4. Navigating Space by the Stars

    NASA Image and Video Library

    2018-06-19

    A tool that has helped guide sailors across oceans for centuries is now being tested aboard the International Space Station as a potential emergency navigation tool for guiding future spacecraft across the cosmos. The Sextant Navigation investigation tests use of a hand-held sextant aboard the space station. Sextants have a telescope-like optical sight to take precise angle measurements between pairs of stars from land or sea, enabling navigation without computer assistance. NASA’s Gemini missions conducted the first sextant sightings from a spacecraft, and designers built a sextant into Apollo vehicles as a navigation backup in the event the crew lost communications from their spacecraft. Jim Lovell demonstrated on Apollo 8 that sextant navigation could return a space vehicle home. Astronauts conducted additional sextant experiments on Skylab. Read more about the Sextant experiment happening aboard the space station: https://www.nasa.gov/mission_pages/station/research/news/Sextant_ISS HD Download: https://archive.org/details/jsc2018m000418_Navigating_Space_by_the_Stars

  5. Navigating Space by the Stars - 16x9

    NASA Image and Video Library

    2018-06-18

    A tool that has helped guide sailors across oceans for centuries is now being tested aboard the International Space Station as a potential emergency navigation tool for guiding future spacecraft across the cosmos. The Sextant Navigation investigation tests use of a hand-held sextant aboard the space station. Sextants have a telescope-like optical sight to take precise angle measurements between pairs of stars from land or sea, enabling navigation without computer assistance. NASA’s Gemini missions conducted the first sextant sightings from a spacecraft, and designers built a sextant into Apollo vehicles as a navigation backup in the event the crew lost communications from their spacecraft. Jim Lovell demonstrated on Apollo 8 that sextant navigation could return a space vehicle home. Astronauts conducted additional sextant experiments on Skylab. Read more about the Sextant experiment happening aboard the space station: https://www.nasa.gov/mission_pages/station/research/news/Sextant_ISS HD Download: https://archive.org/details/jsc2018m000418_Navigating_Space_by_the_Stars

  6. New State of Nuclear Matter: Nearly Perfect Fluid of Quarks and Gluons in Heavy Ion Collisions at RHIC Energies From Charged Particle Density to Jet Quenching

    DOE PAGES

    Nouicer, R.

    2016-03-28

    This article reviews several important results from RHIC experiments and discusses their implications. They were obtained in a unique environment for studying QCD matter at temperatures and densities that exceed the limits wherein hadrons can exist as individual entities and raises to prominence the quark-gluon degrees of freedom. These findings are supported by major experimental observations via measuring of the bulk properties of particle production, particle ratios and chemical freeze-out conditions, and elliptic ow; followed by hard probe measurements: high-pT hadron suppression, dijet fragment azimuthal correlations, and heavy favor probes. These measurements are presented for particles of different species asmore » a function of system sizes, collision centrality, and energy carried out in RHIC experiments. The results reveal that a dense, strongly-interacting medium is created in central Au + Au collisions at p sNN = 200 GeV at RHIC. This revelation of a new state of nuclear matter has also been observed in measurements at the LHC. Further, the IP-Glasma model coupled with viscous hydrodynamic models, which assumes the formation of a QGP, reproduces well the experimental ow results from Au + Au at p sNN = 200 GeV. This implies that the fluctuations in the initial geometry state are important and the created medium behaves as a nearly perfect liquid of nuclear matter because it has an extraordinarily low ratio of shear viscosity to entropy density, =s 0.12. However, these discoveries are far from being fully understood. Furthermore, recent experimental results from RHIC and LHC in small p + A, d + Au and 3He+Au collision systems provide brand new insight into the role of initial and final state effects. These have proven to be interesting and more surprising than originally anticipated; and could conceivably shed new light in our understanding of collective behavior in heavy-ion physics. Accordingly, the focus of the experiments at both facilities RHIC and

  7. New state of nuclear matter: Nearly perfect fluid of quarks and gluons in heavy-ion collisions at RHIC energies. From charged particle density to jet quenching

    NASA Astrophysics Data System (ADS)

    Nouicer, R.

    2016-03-01

    This article reviews several important results from RHIC experiments and discusses their implications. They were obtained in a unique environment for studying QCD matter at temperatures and densities that exceed the limits wherein hadrons can exist as individual entities and raises to prominence the quark-gluon degrees of freedom. These findings are supported by major experimental observations via measuring of the bulk properties of particle production, particle ratios and chemical freeze-out conditions, and elliptic flow; followed by hard probe measurements: high- pT hadron suppression, dijet fragment azimuthal correlations, and heavy-flavor probes. These measurements are presented for particles of different species as a function of system sizes, collision centrality, and energy carried out in RHIC experiments. The results reveal that a dense, strongly interacting medium is created in central Au+Au collisions at sqrt{s_{NN}} = 200 GeV at RHIC. This revelation of a new state of nuclear matter has also been observed in measurements at the LHC. Further, the IP-Glasma model coupled with viscous hydrodynamic models, which assumes the formation of a QGP, reproduces well the experimental flow results from Au+Au at sqrt{s_{NN}} = 200 GeV. This implies that the fluctuations in the initial geometry state are important and the created medium behaves as a nearly perfect liquid of nuclear matter because it has an extraordinarily low ratio of shear viscosity to entropy density, η/s≈ 0.12. However, these discoveries are far from being fully understood. Furthermore, recent experimental results from RHIC and LHC in small p+A, d+ Au and 3He+Au collision systems provide brand new insight into the role of initial and final state effects. These have proven to be interesting and more surprising than originally anticipated; and could conceivably shed new light in our understanding of collective behavior in heavy-ion physics. Accordingly, the focus of the experiments at both

  8. New State of Nuclear Matter: Nearly Perfect Fluid of Quarks and Gluons in Heavy Ion Collisions at RHIC Energies From Charged Particle Density to Jet Quenching

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Nouicer, R.

    This article reviews several important results from RHIC experiments and discusses their implications. They were obtained in a unique environment for studying QCD matter at temperatures and densities that exceed the limits wherein hadrons can exist as individual entities and raises to prominence the quark-gluon degrees of freedom. These findings are supported by major experimental observations via measuring of the bulk properties of particle production, particle ratios and chemical freeze-out conditions, and elliptic ow; followed by hard probe measurements: high-pT hadron suppression, dijet fragment azimuthal correlations, and heavy favor probes. These measurements are presented for particles of different species asmore » a function of system sizes, collision centrality, and energy carried out in RHIC experiments. The results reveal that a dense, strongly-interacting medium is created in central Au + Au collisions at p sNN = 200 GeV at RHIC. This revelation of a new state of nuclear matter has also been observed in measurements at the LHC. Further, the IP-Glasma model coupled with viscous hydrodynamic models, which assumes the formation of a QGP, reproduces well the experimental ow results from Au + Au at p sNN = 200 GeV. This implies that the fluctuations in the initial geometry state are important and the created medium behaves as a nearly perfect liquid of nuclear matter because it has an extraordinarily low ratio of shear viscosity to entropy density, =s 0.12. However, these discoveries are far from being fully understood. Furthermore, recent experimental results from RHIC and LHC in small p + A, d + Au and 3He+Au collision systems provide brand new insight into the role of initial and final state effects. These have proven to be interesting and more surprising than originally anticipated; and could conceivably shed new light in our understanding of collective behavior in heavy-ion physics. Accordingly, the focus of the experiments at both facilities RHIC and

  9. PROCEEDINGS OF RIKEN BNL RESEARCH CENTER WORKSHOP ON BARYON DYNAMICS AT RHIC, MARCH 28-30, 2002, BROOKHAVEN NATIONAL LABORATORY.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    GYULASSY,M.; KHARZEEV,D.; XU,N.

    2002-03-28

    One of the striking observations at RHIC is the large valence baryon rapidity density observed at mid rapidity in central Au+Au at 130 A GeV. There are about twice as many valence protons at mid-rapidity than predicted based on extrapolation from p+p collisions. Even more striking PHENIX observed that the high pt spectrum is dominated by baryons and anti-baryons. The STAR measured event anisotropy parameter v2 for lambdas are as high as charged particles at pt {approx} 2.5 GeV/c. These are completely unexpected based on conventional pQCD parton fragmentation phenomenology. One exciting possibility is that these observables reveal the topologicalmore » gluon field origin of baryon number transport referred to as baryon junctions. Another is that hydrodynamics may apply up to high pt in A+A. There is no consensus on what are the correct mechanisms for producing baryons and hyperons at high pt and large rapidity shifts and the new RHIC data provide a strong motivation to hold a meeting focusing on this class of observables. The possible role of junctions in forming CP violating domain walls and novel nuclear bucky-ball configurations would also be discussed. In this workshop, we focused on all measured baryon distributions at RHIC energies and related theoretical considerations. To facilitate the discussions, results of heavy ion collisions at lower beam energies, results from p+A /p+p/e+e collisions were included. Some suggestions for future measurements have been made at the workshop.« less

  10. LINEAR AND NONLINEAR CORRECTIONS IN THE RHIC INTERACTION REGIONS.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    PILAT,F.; CAMERON,P.; PTITSYN,V.

    2002-06-02

    A method has been developed to measure operationally the linear and non-linear effects of the interaction region triplets, that gives access to the multipole content through the action kick, by applying closed orbit bumps and analysing tune and orbit shifts. This technique has been extensively tested and used during the RHIC operations in 2001. Measurements were taken at 3 different interaction regions and for different focusing at the interaction point. Non-linear effects up to the dodecapole have been measured as well as the effects of linear, sextupolar and octupolar corrections. An analysis package for the data processing has been developedmore » that through a precise fit of the experimental tune shift data (measured by a phase lock loop technique to better than 10{sup -5} resolution) determines the multipole content of an IR triplet.« less

  11. Comparison of Theoretically Predicted Electromagnetic Heavy Ion Cross Sections with CERN SPS and RHIC Data

    NASA Astrophysics Data System (ADS)

    Baltz, Anthony J.

    2002-10-01

    Theoretical predictions for a number of electromagnetically induced reactions have been compared with available ultrarelativistic heavy ion data. Calculations for three atomic process have been confronted with CERN SPS data. Theoretically predicted rates are in good agreement with data[1] for bound-electron positron pairs and ionization of single electron heavy ions. Furthermore, the exact solution of the semi-classical Dirac equation in the ultrarelativistic limit reproduces the perturbative scaling result seen in data[2] for continuum pairs (i.e. cross sections go as Z_1^2 Z_2^2). In the area of electromagnetically induced nuclear and hadronic physics, mutual Coulomb dissociation predictions are in good agreement with RHIC Zero Degree Calorimeter measurements[3], and calculations of coherent vector meson production accompanied by mutual Coulomb dissociation[4] are in good agreement with RHIC STAR data[5]. [1] H. F. Krause et al., Phys. Rev. Lett., 80, 1190 (1998). [2] C. R. Vane et al., Phys. Rev. A 56, 3682 (1997). [3] Mickey Chiu et al., Phys. Rev. Lett. 89, 012302 (2002). [4] Anthony J. Baltz, Spencer R. Klein, and Joakim Nystrand, Phys. Rev. Lett. 89, 012301 (2002). [5] C. Adler et al., STAR Collaboration, arXiv:nucl-ex/206004.

  12. Modeling of two-particle femtoscopic correlations at top RHIC energy

    NASA Astrophysics Data System (ADS)

    Ermakov, N.; Nigmatkulov, G.

    2017-01-01

    The spatial and temporal characteristics of particle emitting source produced in particle and/or nuclear collisions can be measured by using two-particle femtoscopic correlations. These correlations arise due to quantum statistics, Coulomb and strong final state interactions. In this paper we report on the calculations of like-sign pion femtoscopic correlations produced in p+p, p+Au, d+Au, Au+Au at top RHIC energy using Ultra Relativistic Quantum Molecular Dynamics Model (UrQMD). Three-dimensional correlation functions are constructed using the Bertsch-Pratt parametrization of the two-particle relative momentum. The correlation functions are studied in several transverse mass ranges. The emitting source radii of charged pions, Rout, Rside, Rlong , are obtained from Gaussian fit to the correlation functions and compared to data from the STAR and PHENIX experiments.

  13. Decision on the number of turns in the eRHIC Nov15 design

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Brooks, S.

    2015-12-01

    When moving from the “Jun’15” to the “Nov’15” eRHIC FFAG design, the number of accelerating passes through the linac was reduced from 16 to 12. There are an equal number of decelerating passes, so the total reduced from 32 to 24. At the same time, the linac energy was increased from 1.322GeV to 1.665GeV and the RF frequency changed from 422MHz to 647MHz. The maximum beam energy remained approximately constant, changing from 21.164GeV to exactly 20GeV.

  14. EXPERIMENTAL STUDIES OF IBS (INTRA-BEAM SCATTERING) IN RHIC AND COMPARISON WITH THEORY.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    FEDOTOV, A.V.; FISCHER, W.; TEPIKIAN, S.

    A high-energy electron cooling system is presently being developed to overcome emittance growth due to Intra-beam Scattering (IBS) in RHIC. A critical item for choosing appropriate parameters of the cooler is an accurate description of the IBS. The analytic models were verified vs dedicated IBS measurements. Analysis of the 2004 data with the Au ions showed very good agreement for the longitudinal growth rates but significant disagreement with exact IBS models for the transverse growth rates. Experimental measurements were improved for the 2005 run with the Cu ions. Here, we present comparison of the 2005 data with theoretical models.

  15. Search for the critical point of the nuclear matter phase diagram. first results from the beam energy SCAN program at RHIC

    DOE PAGES

    Odyniec, Grazyna

    2012-01-01

    In 2010, the Relativistic Heavy Ion Collider (RHIC) launched a multi-step experimental program to investigate the QCD Phase Diagram in general, and to search for the QCD Critical Point (CP) and/or 1st order phase transition in particular. The BES (Beam Energy Scan) program involves an “energy scan” of Au+Au collisions from the top RHIC energy (√s = 200 GeV) down to energies as low as 5 GeV in NN center of mass. During the first BES run (2010), data were collected at 7.7, 11.5 and 39 GeV. It was complemented in 2011 by two other data sets at 27 andmore » 19.6 GeV. The preparations for the remaining data taking at √s = 5 GeV are in progress. The overview of the BES program and the first experimental results are presented and discussed.« less

  16. Search for the critical point of the nuclear matter phase diagram. first results from the beam energy SCAN program at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Odyniec, Grazyna

    In 2010, the Relativistic Heavy Ion Collider (RHIC) launched a multi-step experimental program to investigate the QCD Phase Diagram in general, and to search for the QCD Critical Point (CP) and/or 1st order phase transition in particular. The BES (Beam Energy Scan) program involves an “energy scan” of Au+Au collisions from the top RHIC energy (√s = 200 GeV) down to energies as low as 5 GeV in NN center of mass. During the first BES run (2010), data were collected at 7.7, 11.5 and 39 GeV. It was complemented in 2011 by two other data sets at 27 andmore » 19.6 GeV. The preparations for the remaining data taking at √s = 5 GeV are in progress. The overview of the BES program and the first experimental results are presented and discussed.« less

  17. The effect of transverse flow on the nuclear modification factor at RHIC and LHC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Betz, Barbara; Gyulassy, Miklos

    2016-01-22

    We determine the nuclear modification factor at RHIC and LHC energies using a generic jet-energy loss model that is expanded by an additional flow factor accounting for the impact of transverse flow. We consider a pQCD-based ansatz with and without jet-energy loss fluctuations that is coupled to a state-of-the-art hydrodynamic prescription and includes a running coupling effect. We show that the nuclear modification factor is a rather insensitive quantity that is barely affected by the flow dynamics of the medium created in a heavy-ion collision.

  18. Polarization Studies for the eRHIC Electron Storage Ring

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Gianfelice-Wendt, Eliana; Tepikian, S.

    A hadron/lepton collider with polarized beams has been under consideration by the scientific community since some years, in the U.S. and Europe. Among the various proposals, those by JLAB and BNL with polarized electron and proton beams are currently under closer study in the U.S. Experimenters call for the simultaneous storage of electron bunches with both spin helicity. In the BNL based Ring-Ring design, electrons are stored at top energy in a ring to be accommodated in the existing RHIC tunnel. The transversely polarized electron beam is injected into the storage ring at variable energies, between 5 and 18 GeV.more » Polarization is brought into the longitudinal direction at the IP by a couple of spin rotators. In this paper results of first studies of the attainable beam polarization level and lifetime in the storage ring at 18 GeV are presented.« less

  19. Simulations to study the static polarization limit for RHIC lattice

    NASA Astrophysics Data System (ADS)

    Duan, Zhe; Qin, Qing

    2016-01-01

    A study of spin dynamics based on simulations with the Polymorphic Tracking Code (PTC) is reported, exploring the dependence of the static polarization limit on various beam parameters and lattice settings for a practical RHIC lattice. It is shown that the behavior of the static polarization limit is dominantly affected by the vertical motion, while the effect of beam-beam interaction is small. In addition, the “nonresonant beam polarization” observed and studied in the lattice-independent model is also observed in this lattice-dependent model. Therefore, this simulation study gives insights of polarization evolution at fixed beam energies, that are not available in simple spin tracking. Supported by the U.S. Department of Energy (DE-AC02-98CH10886), Hundred-Talent Program (Chinese Academy of Sciences), and National Natural Science Foundation of China (11105164)

  20. Optimization methodology for the global 10 Hz orbit feedback in RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Liu, Chuyu; Hulsart, R.; Mernick, K.

    To combat beam oscillations induced by triplet vibrations at the Relativistic Heavy Ion Collider (RHIC), a global orbit feedback system was developed and applied at injection and top energy in 2011, and during beam acceleration in 2012. Singular Value Decomposition (SVD) was employed to determine the strengths and currents of the applied corrections. The feedback algorithm was optimized for different magnetic configurations (lattices) at fixed beam energies and during beam acceleration. While the orbit feedback performed well since its inception, corrector current transients and feedback-induced beam oscillations were observed during the polarized proton program in 2015. In this paper, wemore » present the feedback algorithm, the optimization of the algorithm for various lattices and the solution adopted to mitigate the observed current transients during beam acceleration.« less

  1. Optimization methodology for the global 10 Hz orbit feedback in RHIC

    DOE PAGES

    Liu, Chuyu; Hulsart, R.; Mernick, K.; ...

    2018-05-08

    To combat beam oscillations induced by triplet vibrations at the Relativistic Heavy Ion Collider (RHIC), a global orbit feedback system was developed and applied at injection and top energy in 2011, and during beam acceleration in 2012. Singular Value Decomposition (SVD) was employed to determine the strengths and currents of the applied corrections. The feedback algorithm was optimized for different magnetic configurations (lattices) at fixed beam energies and during beam acceleration. While the orbit feedback performed well since its inception, corrector current transients and feedback-induced beam oscillations were observed during the polarized proton program in 2015. In this paper, wemore » present the feedback algorithm, the optimization of the algorithm for various lattices and the solution adopted to mitigate the observed current transients during beam acceleration.« less

  2. Periodontal status and treatment needs among Spanish military personnel.

    PubMed

    Mombiedro Sandoval, Rafael; Llena Puy, Rafael

    2008-07-01

    Problems arising from poor gingival and periodontal health in military personnel account for around 10% of the emergencies of oral origin during deployments and manoeuvres. Consequently, it is important to ascertain the prior oral health situation among Spanish military personnel. To assess the periodontal health status and treatment needs of a population of Spanish Army personnel at the General Almirante Base at Marines, in the province of Valencia, and calculate the time required to cover the treatment needs of this population. Observational cross-sectional study of periodontal health status in a representative sample of the population in question. The community periodontal index (CPI) was used in accordance with WHO criteria. The sample comprised 387 subjects, selected by systematically sampling those attending the sick bay at the base for different reasons. The examinations were carried out by a single examiner; the intra-observer Kappa index was 0.83. Data collection began in December 2003 and ended in July 2004. All sextants were healthy in 7,2% of the sample. The most prevalent condition was the presence of calculus, especially in the younger population. 7.8% had 4-5 mm periodontal pockets and 2.3% had pockets of 6 mm or more, all in the over-25 age group. The women below 25 years of age were significantly more healthy than the men. The healthy sextants mean was 2.38, without differences by rank. Privates presented a significantly higher mean figure for sextants with bleeding, while officers and non-commissioned officers presented a higher average number of sextants with pockets. Practically every subject needed oral hygiene instructions and scaling and root planing but only 2.3%, all over 25 years old, required complex treatments. The estimated treatment time need is 1 hour per person per year.

  3. DOE Office of Scientific and Technical Information (OSTI.GOV)

    Cadman, R.; Krueger, K.; Spinka, H.

    The small asymmetries measured at G{sub {gamma}} = 7.5 during the RHIC spin commissioning were a serious concern. In earlier runs, asymmetries double those from the spin commissioning time (September 2000) had sometimes been observed, and there had been few changes to the AGS polarimeter hardware or operating conditions. Recently, the observed changes in the asymmetries measured at G{sub {gamma}} = 7:5 have been ascribed to contamination of the carbon target asymmetry with that from the fishline target and vice-versa, because of the sizeable beam spot size compared to the separation of the targets. This note addresses this hypothesis usingmore » the observed asymmetries. This problem could directly impact spin physics at RHIC.« less

  4. The PHENIX muon spectrometer and J/psi production in 200 GeV center of mass energy proton-proton collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Hoover, Andrew S.

    The PHENIX experiment is one of the large detector projects at the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory. One of the unique features of the PHENIX detector is the muon tracking and identification system. No other RHIC experiment has a muon detection capability. Among the many physics topics explored by the observation of muons in Au-Au collisions are the effects of Debye screening on vector meson production, and the search for an enhancement in strangeness and heavy flavor production. In the collisions of polarized protons, the muon arms can explore the polarization of quarks and gluons in the proton through W boson production, the Drell-Yan process, and open heavy flavor production. The muon detector system covers the rapidity range -2.2 < y < -1.2 for the south arm and 1.2 < y < 2.4 for the north arm, with full azimuthal coverage. The detector provides muon tracking and identification in the momentum range 2 < p < 50 GeV, and pi/mu rejection of 10-4. The south muon arm was completed in 2001 for the second RHIC running period. The performance of the muon spectrometer during its first data taking period will be discussed. The production cross section for J/psi in proton-proton collisions at s = 200 GeV is measured. The measured value is in good agreement with the color evaporation model and QCD predictions. Although the number of J/psi currently available for study will not allow a definitive measurement of the J/psi polarization, a technique for performing the measurement is studied and a very low statistics analysis produces a result which is consistent with expectations.

  5. System Size and Energy Dependence on Strangeness Production in 22 GeV Cu+Cu Collisions at RHIC

    DTIC Science & Technology

    2011-05-10

    relativistic speeds approaching the speed of light before they meet in an extremely high temperature collision. The Solenoidal Tracker at RHIC (STAR...extremely high energy and temperature. This project determines the yield of strange quarks through measurements of K0-short mesons as well as Lambda and Anti...charge. These quarks are never observed alone, but are observable in the form of baryons (3 quarks) or mesons (a quark-anti-quark pair). The

  6. The hydrodynamic description of pseudorapidity distributions at lower energies at BNL-RHIC

    NASA Astrophysics Data System (ADS)

    Jiang, Zhi-Jin; Huang, Yan; Zhang, Hai-Li; Zhang, Yu

    2017-04-01

    The hot and dense matter produced in nucleus-nucleus collisions is supposed to expand according to unified hydrodynamics, one of the few theoretical models that can be worked out exactly. The solution is then used to formulate the rapidity distribution of charged particles frozen out from the fluid on the space-like hypersurface with a fixed temperature, T FO. A comparison is made between the theoretical predictions and the experimental measurements carried out by PHOBOS Collaboration in the Relativistic Heavy Ion Collider (RHIC) at the Brookhaven National Laboratory (BNL) in different centrality Au-Au and Cu-Cu collisions at √ {s_{ {NN}}} = 19.6 and 22.4 GeV, respectively. The theoretical results are in good accordance with experimental data.

  7. Heavy and light flavor jet quenching at RHIC and LHC energies

    NASA Astrophysics Data System (ADS)

    Cao, Shanshan; Luo, Tan; Qin, Guang-You; Wang, Xin-Nian

    2018-02-01

    The Linear Boltzmann Transport (LBT) model coupled to hydrodynamical background is extended to include transport of both light partons and heavy quarks through the quark-gluon plasma (QGP) in high-energy heavy-ion collisions. The LBT model includes both elastic and inelastic medium-interaction of both primary jet shower partons and thermal recoil partons within perturbative QCD (pQCD). It is shown to simultaneously describe the experimental data on heavy and light flavor hadron suppression in high-energy heavy-ion collisions for different centralities at RHIC and LHC energies. More detailed investigations within the LBT model illustrate the importance of both initial parton spectra and the shapes of fragmentation functions on the difference between the nuclear modifications of light and heavy flavor hadrons. The dependence of the jet quenching parameter q ˆ on medium temperature and jet flavor is quantitatively extracted.

  8. Highlights from the STAR experiment at RHIC

    NASA Astrophysics Data System (ADS)

    Schmah, Alexander; STAR Collaboration

    2017-11-01

    We present an overview of results presented by the STAR collaboration at the Quark Matter 2017 conference. We report the precision measurement of elliptic flow of D0 mesons and the first measurement of Λc baryons in Au+Au collisions at √{sNN} = 200GeV, which suggest thermalization of charm quarks. B-hadron production is also measured via the decay daughters, J/ψ, D0 and electrons in Au+Au collisions, exhibiting less suppression than charm mesons at high transverse momenta (pT) for the D0 and electron decay channels. J/ψ and ϒ measurements provide new insights into in-medium regeneration and dissociation. Di-electron production shows evidence for coherent photo-production at very low pT. The first RHIC measurement of direct photon-jet coincidences is reported, and compared to distributions with π0 and charged hadron triggers. The jet shared momentum fraction zg measurement shows no modification in A+A collisions, in contrast to LHC measurements. First results from the fixed-target program at STAR show good agreement with published results. New analysis methods of the chiral magnetic effect are discussed, together with the first observation of a non-zero global Λ polarization in A+A collisions. Finally, we give an outlook to detector upgrades for the Beam Energy Scan phase II.

  9. Understanding the composition of nucleon spin with the PHENIX detector at RHIC

    DOE PAGES

    Deshpande, Abhay

    2015-01-12

    The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) has just finished 14 years of operation. A significant fraction of these operating years were with polarized proton collisions at 62.4, 200, and 500 GeV center of mass, investigating various aspects of nucleon spin through longitudinal and transversely polarized collisions. These data have helped to address some of the most puzzling and fundamental questions in quantum chromodynamics including: what fraction of the nucleon’s spin originates in the gluon’s helicity contribution?, how polarized are the sea quarks?, and what if any, is the evidence for transverse motion of quarks inmore » polarized protons? These questions have been addressed by the PHENIX detector collaboration. We present in this review highlights of the PHENIX results and discuss their impact.« less

  10. Measurement of the Transverse Single-Spin Asymmetry in p↑+p →W±/Z0 at RHIC

    NASA Astrophysics Data System (ADS)

    Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; Aggarwal, M. M.; Ahammed, Z.; Alekseev, I.; Aparin, A.; Arkhipkin, D.; Aschenauer, E. C.; Attri, A.; Averichev, G. S.; Bai, X.; Bairathi, V.; Banerjee, A.; Bellwied, R.; Bhasin, A.; Bhati, A. K.; Bhattarai, P.; Bielcik, J.; Bielcikova, J.; Bland, L. C.; Bordyuzhin, I. G.; Bouchet, J.; Brandenburg, J. D.; Brandin, A. V.; Bunzarov, I.; Butterworth, J.; Caines, H.; Calderón de la Barca Sánchez, M.; Campbell, J. M.; Cebra, D.; Chakaberia, I.; Chaloupka, P.; Chang, Z.; Chattopadhyay, S.; Chen, X.; Chen, J. H.; Cheng, J.; Cherney, M.; Christie, W.; Contin, G.; Crawford, H. J.; Das, S.; De Silva, L. C.; Debbe, R. R.; Dedovich, T. G.; Deng, J.; Derevschikov, A. A.; di Ruzza, B.; Didenko, L.; Dilks, C.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, C. M.; Dunkelberger, L. E.; Dunlop, J. C.; Efimov, L. G.; Engelage, J.; Eppley, G.; Esha, R.; Evdokimov, O.; Eyser, O.; Fatemi, R.; Fazio, S.; Federic, P.; Fedorisin, J.; Feng, Z.; Filip, P.; Fisyak, Y.; Flores, C. E.; Fulek, L.; Gagliardi, C. A.; Garand, D.; Geurts, F.; Gibson, A.; Girard, M.; Greiner, L.; Grosnick, D.; Gunarathne, D. S.; Guo, Y.; Gupta, A.; Gupta, S.; Guryn, W.; Hamad, A.; Hamed, A.; Haque, R.; Harris, J. W.; He, L.; Heppelmann, S.; Heppelmann, S.; Hirsch, A.; Hoffmann, G. W.; Hofman, D. J.; Horvat, S.; Huang, X.; Huang, H. Z.; Huang, B.; Huang, T.; Huck, P.; Humanic, T. J.; Igo, G.; Jacobs, W. W.; Jang, H.; Jentsch, A.; Jia, J.; Jiang, K.; Judd, E. G.; Kabana, S.; Kalinkin, D.; Kang, K.; Kauder, K.; Ke, H. W.; Keane, D.; Kechechyan, A.; Khan, Z. H.; Kikoła, D. P.; Kisel, I.; Kisiel, A.; Kochenda, L.; Koetke, D. D.; Kosarzewski, L. K.; Kraishan, A. F.; Kravtsov, P.; Krueger, K.; Kumar, L.; Lamont, M. A. C.; Landgraf, J. M.; Landry, K. D.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, J. H.; Li, C.; Li, Y.; Li, W.; Li, X.; Li, X.; Lin, T.; Lisa, M. A.; Liu, F.; Ljubicic, T.; Llope, W. J.; Lomnitz, M.; Longacre, R. S.; Luo, X.; Ma, R.; Ma, L.; Ma, G. L.; Ma, Y. G.; Magdy, N.; Majka, R.; Manion, A.; Margetis, S.; Markert, C.; McDonald, D.; Meehan, K.; Mei, J. C.; Minaev, N. G.; Mioduszewski, S.; Mishra, D.; Mohanty, B.; Mondal, M. M.; Morozov, D. A.; Mustafa, M. K.; Nandi, B. K.; Nasim, Md.; Nayak, T. K.; Nigmatkulov, G.; Niida, T.; Nogach, L. V.; Noh, S. Y.; Novak, J.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Oh, K.; Okorokov, V. A.; Olvitt, D.; Page, B. S.; Pak, R.; Pan, Y. X.; Pandit, Y.; Panebratsev, Y.; Pawlik, B.; Pei, H.; Perkins, C.; Pile, P.; Pluta, J.; Poniatowska, K.; Porter, J.; Posik, M.; Poskanzer, A. M.; Pruthi, N. K.; Putschke, J.; Qiu, H.; Quintero, A.; Ramachandran, S.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Roy, A.; Ruan, L.; Rusnak, J.; Rusnakova, O.; Sahoo, N. R.; Sahu, P. K.; Sakrejda, I.; Salur, S.; Sandweiss, J.; Sarkar, A.; Schambach, J.; Scharenberg, R. P.; Schmah, A. M.; Schmidke, W. B.; Schmitz, N.; Seger, J.; Seyboth, P.; Shah, N.; Shahaliev, E.; Shanmuganathan, P. V.; Shao, M.; Sharma, M. K.; Sharma, B.; Shen, W. Q.; Shi, Z.; Shi, S. S.; Shou, Q. Y.; Sichtermann, E. P.; Sikora, R.; Simko, M.; Singha, S.; Skoby, M. J.; Smirnov, D.; Smirnov, N.; Solyst, W.; Song, L.; Sorensen, P.; Spinka, H. M.; Srivastava, B.; Stanislaus, T. D. S.; Stepanov, M.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Sumbera, M.; Summa, B.; Sun, Y.; Sun, Z.; Sun, X. M.; Surrow, B.; Svirida, D. N.; Tang, A. H.; Tang, Z.; Tarnowsky, T.; Tawfik, A.; Thäder, J.; Thomas, J. H.; Timmins, A. R.; Tlusty, D.; Todoroki, T.; Tokarev, M.; Trentalange, S.; Tribble, R. E.; Tribedy, P.; Tripathy, S. K.; Tsai, O. D.; Ullrich, T.; Underwood, D. G.; Upsal, I.; Van Buren, G.; van Nieuwenhuizen, G.; Vandenbroucke, M.; Varma, R.; Vasiliev, A. N.; Vertesi, R.; Videbæk, F.; Vokal, S.; Voloshin, S. A.; Vossen, A.; Wang, J. S.; Wang, Y.; Wang, F.; Wang, Y.; Wang, H.; Wang, G.; Webb, J. C.; Webb, G.; Wen, L.; Westfall, G. D.; Wieman, H.; Wissink, S. W.; Witt, R.; Wu, Y.; Xiao, Z. G.; Xie, X.; Xie, W.; Xin, K.; Xu, N.; Xu, Y. F.; Xu, Z.; Xu, Q. H.; Xu, J.; Xu, H.; Yang, Q.; Yang, Y.; Yang, S.; Yang, Y.; Yang, C.; Yang, Y.; Ye, Z.; Ye, Z.; Yepes, P.; Yi, L.; Yip, K.; Yoo, I.-K.; Yu, N.; Zbroszczyk, H.; Zha, W.; Zhang, S.; Zhang, Z.; Zhang, S.; Zhang, J. B.; Zhang, Y.; Zhang, J.; Zhang, J.; Zhang, X. P.; Zhao, J.; Zhong, C.; Zhou, L.; Zhu, X.; Zoulkarneeva, Y.; Zyzak, M.; STAR Collaboration

    2016-04-01

    We present the measurement of the transverse single-spin asymmetry of weak boson production in transversely polarized proton-proton collisions at √{s }=500 GeV by the STAR experiment at RHIC. The measured observable is sensitive to the Sivers function, one of the transverse-momentum-dependent parton distribution functions, which is predicted to have the opposite sign in proton-proton collisions from that observed in deep inelastic lepton-proton scattering. These data provide the first experimental investigation of the nonuniversality of the Sivers function, fundamental to our understanding of QCD.

  11. Heavy and light flavor jet quenching at RHIC and LHC energies

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Cao, Shanshan; Luo, Tan; Qin, Guang-You

    The Linear Boltzmann Transport (LBT) model coupled to hydrodynamical background is extended to include transport of both light partons and heavy quarks through the quark–gluon plasma (QGP) in high-energy heavy-ion collisions. The LBT model includes both elastic and inelastic medium-interaction of both primary jet shower partons and thermal recoil partons within perturbative QCD (pQCD). It is shown to simultaneously describe the experimental data on heavy and light flavor hadron suppression in high-energy heavy-ion collisions for different centralities at RHIC and LHC energies. More detailed investigations within the LBT model illustrate the importance of both initial parton spectra and the shapes of fragmentation functions on the difference between the nuclear modifications of light and heavy flavor hadrons. Finally, the dependence of the jet quenching parametermore » $$\\hat{q}$$ on medium temperature and jet flavor is quantitatively extracted.« less

  12. Heavy and light flavor jet quenching at RHIC and LHC energies

    DOE PAGES

    Cao, Shanshan; Luo, Tan; Qin, Guang-You; ...

    2017-12-14

    The Linear Boltzmann Transport (LBT) model coupled to hydrodynamical background is extended to include transport of both light partons and heavy quarks through the quark–gluon plasma (QGP) in high-energy heavy-ion collisions. The LBT model includes both elastic and inelastic medium-interaction of both primary jet shower partons and thermal recoil partons within perturbative QCD (pQCD). It is shown to simultaneously describe the experimental data on heavy and light flavor hadron suppression in high-energy heavy-ion collisions for different centralities at RHIC and LHC energies. More detailed investigations within the LBT model illustrate the importance of both initial parton spectra and the shapes of fragmentation functions on the difference between the nuclear modifications of light and heavy flavor hadrons. Finally, the dependence of the jet quenching parametermore » $$\\hat{q}$$ on medium temperature and jet flavor is quantitatively extracted.« less

  13. Future of the beam energy scan program at RHIC

    NASA Astrophysics Data System (ADS)

    Odyniec, Grazyna

    2015-05-01

    The first exploratory phase of a very successful Beam Energy Scan Program at RHIC was completed in 2014 with Au+Au collisions at energies ranging from 7 to 39 GeV. Data sets taken earlier extended the upper limit of energy range to the √sNN of 200 GeV. This provided an initial look into the uncharted territory of the QCD phase diagram, which is considered to be the single most important graph of our field. The main results from BES phase I, although effected by large statistical errors (steeply increasing with decreasing energy), suggest that the highest potential for discovery of the QCD Critical Point lies bellow √sNN 20 GeV. Here, we discuss the plans and the preparation for phase II of the BES program, with an order of magnitude larger statistics, which is planned for 2018-2019. The BES II will focus on Au+Au collisions at √sNN from 20 to 7 GeV in collider mode, and from √sNN 7 to 3.5 GeV in the fixed target mode, which will be run concurrently with the collider mode operation.

  14. Future of the Beam Energy Scan program at RHIC

    DOE PAGES

    Odyniec, Grazyna; Bravina, L.; Foka, Y.; ...

    2015-05-29

    The first exploratory phase of a very successful Beam Energy Scan Program at RHIC was completed in 2014 with Au+Au collisions at energies ranging from 7 to 39 GeV. Data sets taken earlier extended the upper limit of energy range to the √sNN of 200 GeV. This provided an initial look into the uncharted territory of the QCD phase diagram, which is considered to be the single most important graph of our field. The main results from BES phase I, although effected by large statistical errors (steeply increasing with decreasing energy), suggest that the highest potential for discovery of themore » QCD Critical Point lies bellow √sNN 20 GeV. Here, we discuss the plans and the preparation for phase II of the BES program, with an order of magnitude larger statistics, which is planned for 2018-2019. The BES II will focus on Au+Au collisions at √sNN from 20 to 7 GeV in collider mode, and from √sNN 7 to 3.5 GeV in the fixed target mode, which will be run concurrently with the collider mode operation.« less

  15. 33 CFR 209.50 - Mississippi River Commission: Public observation of Commission meetings.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... official Commission business, but does not include: (i) Deliberations of the Commission in determining... the meeting will be permitted, and (v) States the name and business phone number of the official who... Commission determines by a recorded vote that Commission business requires that a meeting be called at an...

  16. Jet-induced medium excitation in γ-hadron correlation at RHIC

    DOE PAGES

    Chen, Wei; Cao, Shanshan; Luo, Tan; ...

    2017-09-25

    Both jet transport and jet-induced medium excitation are investigated simultaneously within the coupled Linear Boltzmann Transport and hydro (CoLBT-hydro) model. In this coupled approach, energy-momentum deposition from propagating jet shower partons in the elastic and radiation processes is taken as a source term in hydrodynamics and the hydro background for LBT simulation is updated for next time step. We use CoLBT-hydro model to simulate γ-jet events of Au+Au collisions at RHIC. Hadron spectra from both the hadronization of jet shower partons and jet-induced medium excitation are calculated and compared to experimental data. Parton energy loss of jet shower partons leadsmore » to the suppression of hadron yields at large z T = p h T/p γ T while medium excitations leads to enhancement of hadron yields at small z T. Meanwhile, a significant broadening of low p T hadron yields and the depletion of soft hadrons in the γ direction are observed in the calculation of γ-hadron angular correlation.« less

  17. Jet-induced medium excitation in γ-hadron correlation at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Chen, Wei; Cao, Shanshan; Luo, Tan

    Both jet transport and jet-induced medium excitation are investigated simultaneously within the coupled Linear Boltzmann Transport and hydro (CoLBT-hydro) model. In this coupled approach, energy-momentum deposition from propagating jet shower partons in the elastic and radiation processes is taken as a source term in hydrodynamics and the hydro background for LBT simulation is updated for next time step. We use CoLBT-hydro model to simulate γ-jet events of Au+Au collisions at RHIC. Hadron spectra from both the hadronization of jet shower partons and jet-induced medium excitation are calculated and compared to experimental data. Parton energy loss of jet shower partons leadsmore » to the suppression of hadron yields at large z T = p h T/p γ T while medium excitations leads to enhancement of hadron yields at small z T. Meanwhile, a significant broadening of low p T hadron yields and the depletion of soft hadrons in the γ direction are observed in the calculation of γ-hadron angular correlation.« less

  18. Transverse profile of the electron beam for the RHIC electron lenses

    DOE PAGES

    Gu, X.; Altinbas, Z.; Costanzo, M.; ...

    2015-07-10

    To compensate for the beam-beam effects from the proton-proton interactions at the two interaction points IP6 and IP8 in the Relativistic Heavy Ion Collider (RHIC), we are constructing two electron lenses (e-lenses) that we plan to install in the interaction region IR10. Before installing them, the electron gun, collector, instrumentation were tested and the electron beam properties were qualified on an electron lens test bench. We will present the test results and discuss our measurement of the electron beam current and of the electron gun perveance. We achieved a maximum current of 1 A with 5 kV energy for bothmore » the pulsed- and the DC-beam (which is a long turn-by-turn pulse beam). We measured beam transverse profiles with an Yttrium Aluminum Garnet (YAG) screen and pinhole detector, and compared those to simulated beam profiles. Measurements of the pulsed electron beam stability were obtained by measuring the modulator voltage.« less

  19. Elliptic flow due to charged hadrons for Au+Au collisions at RHIC energy 62.4 GeV

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Kumar, Somani Ajit, E-mail: ajit.somani@gmail.com; Sudhir, Bhardwaj; Ashish, Agnihotri

    Elliptic flow is an important observable in search of Quark Gluon Plasma. The elliptic flow parameter dependence on centrality due to charged hadrons were studied using events generated by event generator AMPT at center of mass energy of 62.4 GeV per nucleon pair for Au+Au collisions. This study performed for pseudorapidity range from −0.35 to 0.35 and transverse momentum bins p{sub t} = 0.2 to 1 GeV/c and 1 to 2 GeV/c. We compared the results obtained from simulated data and RHIC-PHENIX data.

  20. Tracking Detectors in the STAR Experiment at RHIC

    NASA Astrophysics Data System (ADS)

    Wieman, Howard

    2015-04-01

    The STAR experiment at RHIC is designed to measure and identify the thousands of particles produced in 200 Gev/nucleon Au on Au collisions. This talk will focus on the design and construction of two of the main tracking detectors in the experiment, the TPC and the Heavy Flavor Tracker (HFT) pixel detector. The TPC is a solenoidal gas filled detector 4 meters in diameter and 4.2 meters long. It provides precise, continuous tracking and rate of energy loss in the gas (dE/dx) for particles at + - 1 units of pseudo rapidity. The tracking in a half Tesla magnetic field measures momentum and dE/dX provides particle ID. To detect short lived particles tracking close to the point of interaction is required. The HFT pixel detector is a two-layered, high resolution vertex detector located at a few centimeters radius from the collision point. It determines origins of the tracks to a few tens of microns for the purpose of extracting displaced vertices, allowing the identification of D mesons and other short-lived particles. The HFT pixel detector uses detector chips developed by the IPHC group at Strasbourg that are based on standard IC Complementary Metal-Oxide-Semiconductor (CMOS) technology. This is the first time that CMOS pixel chips have been incorporated in a collider application.

  1. Commissioning MMS

    NASA Technical Reports Server (NTRS)

    Wood, Paul; Gramling, Cheryl; Stone, John; Smith, Patrick; Reiter, Jenifer

    2016-01-01

    This paper discusses commissioning of NASAs Magnetospheric MultiScale (MMS) Mission. The mission includes four identical spacecraft with a large, complex set of instrumentation. The planning for and execution of commissioning for this mission is described. The paper concludes by discussing lessons learned.

  2. 47 CFR 1.103 - Effective dates of Commission actions; finality of Commission actions.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false Effective dates of Commission actions; finality of Commission actions. 1.103 Section 1.103 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... Actions Taken by the Commission and Pursuant to Delegated Authority; Effective Dates and Finality Dates of...

  3. 47 CFR 1.103 - Effective dates of Commission actions; finality of Commission actions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Effective dates of Commission actions; finality of Commission actions. 1.103 Section 1.103 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... Actions Taken by the Commission and Pursuant to Delegated Authority; Effective Dates and Finality Dates of...

  4. Audit of the Federal Energy Regulatory Commission`s Office of Chief Accountant

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    NONE

    1995-04-07

    The Federal Energy Regulatory Commission`s (Commission) mission is to oversee America`s natural gas and oil pipeline transportation, electric utility, and hydroelectric power industries to ensure that consumers receive adequate energy supplies at just and reasonable rates. To carry out this mission, the Commission issues regulations covering the accounting, reporting, and rate-making requirements of the regulated utility companies. The Commission`s Office of Chief Accountant performs financial related audits at companies to ensure compliance with these regulations. The purpose of this audit was to evaluate the office of Chief Accountant`s audit performance. Specifically, the objectives were to determine if the most appropriatemore » audit approach was used and if a quality assurance process was in place to ensure reports were accurate and supported by the working papers.« less

  5. Building Commissioning

    Science.gov Websites

    Berkeley Lab logo Home > Building Commissioning A Golden Opportunity for Reducing Energy Costs and Greenhouse-Gas Emissions The need for commissioning The map is not the territory. Building . Deficiencies such as design flaws, construction defects, and malfunctioning equipment have a host of

  6. STUDY OF THE RHIC BPM SMA CONNECTOR FAILURE PROBLEM

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    LIAW,C.; SIKORA, R.; SCHROEDER, R.

    2007-06-25

    About 730 BPMs are mounted on the RHIC CQS and Triplet super-conducting magnets. Semi-rigid coaxial cables are used to bring the electrical signal from the BPM feedthroughs to the outside flanges. at the ambient temperature. Every year around 10 cables will lose their signals during the operation. The connection usually failed at the warm end of the cable. The problems were either the solder joint failed or the center conductor retracted out of the SMA connector. Finite element analyses were performed to understand the failure mechanism of the solder joint. The results showed that (1) The SMA center conductor canmore » separate from the mating connector due to the thermal retraction. (2) The maximum thermal stress at the warm end solder joint can exceed the material strength of the Pb37/Sn63 solder material and (3) The magnet ramping frequency (-10 Hz), during the machine startup, can possibly resonant the coaxial cable and damage the solder joints, especially when a fracture is initiated. Test results confirmed that by using the silver bearing solder material (a higher strength material) and by crimping the cable at the locations close to the SMA connector (to prevent the center conductor from retracting) can effectively resolve the connector failure problem.« less

  7. Chiral magnetic currents with QGP medium response in heavy-ion collisions at RHIC and LHC energies

    NASA Astrophysics Data System (ADS)

    She, Duan; Feng, Sheng-Qin; Zhong, Yang; Yin, Zhong-Bao

    2018-03-01

    We calculate the electromagnetic current with a more realistic approach in the RHIC and LHC energy regions in the article. We take the partons formation time as the initial time of the magnetic field response of QGP medium. The maximum electromagnetic current and the time-integrated current are two important characteristics of the chiral magnetic effect (CME), which can characterize the intensity and duration of fluctuations of CME. We consider the finite frequency response of CME to a time-varying magnetic field, find a significant impact from QGP medium feedback, and estimate the generated electromagnetic current as a function of time, beam energy and impact parameter.

  8. Measurement of Elliptic Llow in p+Au Collisions at √SNN = 200 GeV Using the PHENIX Detector at RHIC

    NASA Astrophysics Data System (ADS)

    Koblesky, Theodore E.

    The Quark Gluon Plasma (QGP), a hot and dense state of matter in which quarks are not confined inside hadrons, is thought to be the same as the matter comprising the entire universe approximately one microsecond after the Big Bang. In Au+Au collisions at √SNN = 200 GeV at the Relativistic Heavy Ion Collider (RHIC) and Pb+Pb collisions at √ SNN = 2.76 TeV at the Large Hadron Collider (LHC), QGP has been discovered to have unique properties, such as its opacity to color charges and the fact that it behaves like a near-perfect fluid. Collective behavior in the form of a substantial elliptical azimuthal anisotropy ( v2) in the momentum distribution of final state particles has been observed, indicating a strongly-coupled, hydrodynamically flowing medium. Recently, features of collectivity have been detected in high-multiplicity, small collision systems thought to be too small to produce the QGP, such as 3He+Au and d+Au at √SNN = 200 GeV, p+Pb at √SNN = 5 TeV, and in p+p = 13 TeV events. In order to constrain models seeking to describe this phenomena, collision systems with distinct initial collision geometries were run at RHIC: 3He+Au for triangular geometry, d+Au for elliptical geometry, and p+Au for circular geometry. Together with coauthors, in a theory paper published in 2014, we proposed the suite of measurements at RHIC of the three collision systems. This thesis is the completion of that set of three measurements, by measuring v2 in the p+Au system. This thesis gives details on the analysis techniques used to make the measurement including the quality assurance of the data, the optimization of the midrapidity charged hadron cuts, and the event plane angle calibration. Special attention is given to correcting the systematic effects produced by the beam alignment unique to the p+Au dataset in order to make the v2 measurement with sufficient precision. Comparisons of v2 in the three collision systems and various theoretical models are made and it appears to

  9. Universal behavior of charged particle production in heavy ion collisions at RHIC energies

    NASA Astrophysics Data System (ADS)

    Steinberg, Peter A.; Back, B. B.; Baker, M. D.; Barton, D. S.; Betts, R. R.; Ballintijn, M.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; García, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Holyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Michałowski, J.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sagerer, J.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S. G.; Steinberg, P.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysłouch, B.; Phobos Collaboration

    2003-04-01

    The PHOBOS experiment at RHIC has measured the multiplicity of primary charged particles as a function of centrality and pseudorapidity in Au+Au collisions at √ SNN = 19.6, 130 and 200 GeV. Two kinds of universal behavior are observed in charged particle production in heavy ion collisions. The first is that forward particle production, over a range of energies, follows a universal limiting curve with a non-trivial centrality dependence. The second arises from comparisons with pp/ overlinepp and e +e - data. < Nch>/< Npart/2> in nuclear collisions at high energy scales with √ s in a similar way as Nch in e +e - collisions and has a very weak centrality dependence. This feature may be related to a reduction in the leading particle effect due to the multiple collisions suffered per participant in heavy ion collisions.

  10. Operation of the 56 MHz superconducting RF cavity in RHIC during run 14

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Wu, Q.; Belomestnykh, S.; Ben-Zvi, I.

    2015-09-11

    A 56 MHz superconducting RF cavity was designed and installed in the Relativistic Heavy Ion Collider (RHIC). It is the first superconducting quarter wave resonator (QWR) operating in a high-energy storage ring. We discuss herein the cavity operation with Au+Au collisions, and with asymmetrical Au+He3 collisions. The cavity is a storage cavity, meaning that it becomes active only at the energy of experiment, after the acceleration cycle is completed. With the cavity at 300 kV, an improvement in luminosity was detected from direct measurements, and the bunch length has been reduced. The uniqueness of the QWR demands an innovative designmore » of the higher order mode dampers with high-pass filters, and a distinctive fundamental mode damper that enables the cavity to be bypassed during the acceleration stage.« less

  11. Alaska Seismic Hazards Safety Commission

    Science.gov Websites

    State Employees ASHSC State of Alaska search Alaska Seismic Hazards Safety Commission View of Anchorage and Commissions Alaska Seismic Hazards Safety Commission (ASHSC) main contant Alaska Seismic Hazards Safety Commission logo Alaska Seismic Hazards Safety Commission (ASHSC) - Mission The Alaska Seismic

  12. Study of J/ψ spin alignment in proton-proton collisions at s = 200 GeV in the PHENIX experiment at RHIC

    NASA Astrophysics Data System (ADS)

    Shoji, Kohei

    2009-10-01

    Non-relativisitic QCD calculations using Color Octet Models (COMs) succeed in describing the production cross section of heavy quarkonia measured by CDF and other experiments. However, these models can not reproduce the experimental data for J/ψ spin alignment (polarization). The understanding of the heavy quarkonium production mechanism cannot proceed without additional experimental measurements. The J/ψ spin alignment is experimentally determined by measuring the decay angular distribution of leptons in the J/ψ center of mass system. The anisotropy in the helicity frame was measured at CDF; however, the necessity of analyzing data with respect to another frame like Collins-Soper was recently discussed because the proper polarization axis which is sensitive to the interesting physics phenomenon is not known well. Moreover, measurements of not only the polar angular distribution but also the azimuthal one are important. Proton-proton collision experiments are in progress at the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory. The PHENIX experiment at RHIC has muon spectrometers which can detect decay muons from J/ψ at forward and backward rapidity, 1.2<|η|<2.2. We present the status of our J/ψ spin alignment study in proton-proton collisions at s = 200 GeV.

  13. 47 CFR 1.5005 - Notification of Commission action to the Securities and Exchange Commission.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Notification of Commission action to the Securities and Exchange Commission. 1.5005 Section 1.5005 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... Securities and Exchange Commission whenever a person is determined to be an exempt telecommunications company...

  14. 47 CFR 1.5005 - Notification of Commission action to the Securities and Exchange Commission.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false Notification of Commission action to the Securities and Exchange Commission. 1.5005 Section 1.5005 Telecommunication FEDERAL COMMUNICATIONS COMMISSION... Securities and Exchange Commission whenever a person is determined to be an exempt telecommunications company...

  15. Proceedings of RIKEN BNL Research Center Workshop: The Physics of p ↑+A Collisions at RHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Bai, Mei; Goto, Yuji; Heppelmann, Steve

    The RIKEN BNL Research Center (RBRC) was established in April 1997 at Brookhaven National Laboratory. It is funded by the "Rikagaku Kenkyusho" (RIKEN, The Institute of Physical and Chemical Research) of Japan. The Memorandum of Understanding between RIKEN and BNL, initiated in 1997, has been renewed in 2002, 2007 and again in 2012. The Center is dedicated to the study of strong interactions, including spin physics, lattice QCD, and RHIC physics through the nurturing of a new generation of young physicists. The RBRC has both a theory and experimental component. The RBRC Theory Group and the RBRC Experimental Group consistsmore » of a total of 25-30 researchers. Positions include the following: full time RBRC Fellow, half-time RHIC Physics Fellow, and full-time postdoctoral Research Associate. The RHIC Physics Fellows hold joint appointments with RBRC and other institutions and have tenure track positions at their respective universities or BNL. To date, RBRC has over 95 graduates (Fellows and Post- docs) of which approximately 40 theorists and 20 experimenters have already attained tenure positions at major institutions worldwide. Beginning in 2001 a new RIKEN Spin Program (RSP) category was implemented at RBRC. These appointments are joint positions of RBRC and RIKEN and include the following positions in theory and experiment: RSP Researchers, RSP Research Associates, and Young Researchers, who are mentored by senior RBRC Scientists. A number of RIKEN Jr. Research Associates and Visiting Scientists also contribute to the physics program at the Center. RBRC has an active workshop program on strong interaction physics with each workshop focused on a specific physics problem. In most cases all the talks are made available on the RBRC website. In addition, highlights to each speaker’s presentation are collected to form proceedings which can therefore be made available within a short time after the workshop. To date there are over one hundred proceeding volumes

  16. Increase in Periodontal Interleukin-1β Gene Expression Following Osseous Resective Surgery Using Conventional Rotary Instruments Compared with Piezosurgery: A Split-Mouth Randomized Clinical Trial.

    PubMed

    Aimetti, Mario; Ferrarotti, Francesco; Bergandi, Loredana; Saksing, Laura; Parducci, Francesca; Romano, Federica

    2016-01-01

    The purpose of this study was to evaluate the early inflammatory response following osseous resective surgery (ORS) with Piezosurgery compared to commonly used diamond burs. A sample was selected of 24 bilateral posterior sextants requiring ORS in 12 chronic periodontitis patients in a split-mouth design. In 12 sextants, bone recontouring was performed using a piezoelectric device. In the contralateral sextants, rotary instruments were used. Sextants treated with Piezosurgery obtained similar 12-month clinical results but lower postsurgical gene expression of interleukin-1β (IL-1β), a well-known proinflammatory cytokine, and lower patient morbidity compared with sextants treated with rotary instruments. In spite of the longer surgical time, the use of Piezosurgery for ORS seems to promote more favorable wound healing compared with rotary instruments, as the lower pain and the low levels of IL-1β mRNA at the surgical sites suggest a milder underlying inflammatory response.

  17. 75 FR 11166 - Joint Meeting of the Nuclear Regulatory Commission and the Federal Energy Regulatory Commission...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-10

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. AD06-6-000] Joint Meeting of the Nuclear Regulatory Commission and the Federal Energy Regulatory Commission; Notice of Joint Meeting of the Nuclear Regulatory Commission and the Federal Energy Regulatory Commission March 2, 2010. The Federal Energy Regulatory Commission (FERC)...

  18. 78 FR 32295 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-29

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... business meeting are contained in the Supplementary Information section of this notice. DATES: June 20...

  19. 78 FR 69517 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-19

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... meeting are contained in the Supplementary Information section of this notice. DATES: December 12, 2013...

  20. 78 FR 12412 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-22

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... business meeting are contained in the Supplementary Information section of this notice. DATES: March 21...

  1. 77 FR 52106 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-28

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... business meeting are contained in the Supplementary Information section of this notice. DATES: September 20...

  2. 77 FR 70204 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-23

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... meeting are contained in the SUPPLEMENTARY INFORMATION section of this notice. DATES: December 14, 2012...

  3. 78 FR 52601 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-23

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... meeting are contained in the Supplementary Information section of this notice. DATES: September 19, 2013...

  4. 77 FR 28420 - Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ... SUSQUEHANNA RIVER BASIN COMMISSION Commission Meeting AGENCY: Susquehanna River Basin Commission. ACTION: Notice. SUMMARY: The Susquehanna River Basin Commission will hold its regular business meeting on... meeting are contained in the Supplementary Information section of this notice. DATES: June 7, 2012, at 9...

  5. Strange and heavy hadrons production from coalescence plus fragmentation in AA collisions at RHIC and LHC

    NASA Astrophysics Data System (ADS)

    Plumari, Salvatore; Minissale, Vincenzo; Das, Santosh K.; Scardina, Francesco; Greco, Vincenzo

    2018-02-01

    In a coalescence plus fragmentation approach we study the pT spectra of charmed hadrons D0, Ds up to about 10 GeV and the Λ+c /D0 ratio from RHIC to LHC energies. In this study we have included the contribution from decays of heavy hadron resonances and also that due to fragmentation of heavy quarks that are left in the system after coalescence. The pT dependence of the heavy baryon/meson ratios is found to be sensitive to the heavy quark mass. In particular we found that the Λc/D0 is much flatter than the one for light baryon/meson ratio like p/π and Λ/K.

  6. Measurement of the Transverse Single-Spin Asymmetry in p ↑ + p → W ± / Z 0 at RHIC

    DOE PAGES

    Adamczyk, L.; Adkins, J. K.; Agakishiev, G.; ...

    2016-04-01

    In this paper, we present the measurement of the transverse single-spin asymmetry of weak boson production in transversely polarized proton-proton collisions at √s = 500 GeV by the STAR experiment at RHIC. The measured observable is sensitive to the Sivers function, one of the transverse-momentum-dependent parton distribution functions, which is predicted to have the opposite sign in proton-proton collisions from that observed in deep inelastic lepton-proton scattering. In conclusion, these data provide the first experimental investigation of the nonuniversality of the Sivers function, fundamental to our understanding of QCD.

  7. 76 FR 7839 - Notice of Commission and Commission Staff Attendance at ISO/RTO Council and Regional State...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission and Commission Staff Attendance at ISO/RTO Council and Regional State Committees Meeting The Federal Energy Regulatory Commission hereby gives notice that members of the Commission and Commission staff may attend the following...

  8. Liberalism, authority, and bioethics commissions.

    PubMed

    MacDougall, D Robert

    2013-12-01

    Bioethicists working on national ethics commissions frequently think of themselves as advisors to the government, but distance themselves from any claims to actual authority. Governments however may find it beneficial to appear to defer to the authority of these commissions when designing laws and policies, and might appoint such commissions for exactly this reason. Where does the authority for setting laws and policies come from? This question is best answered from within a normative political philosophy. This paper explains the locus of moral authority as understood within one family of normative political theories--liberal political theories--and argues that most major "liberal" commentators have understood both the source and scope of ethics commissions' authority in a manner at odds with liberalism, rightly interpreted. The author argues that reexamining the implications of liberalism for bioethics commissions would mean changing what are considered valid criticisms of such commissions and also changing the content of national bioethics commission mandates. The author concludes that bioethicists who participate in such commissions ought to carefully examine their own views about the normative limits of governmental authority because such limits have important implications for the contribution that bioethicists can legitimately make to government commissions.

  9. Survey of Recent Results from the PHOBOS Experiment at RHIC

    NASA Astrophysics Data System (ADS)

    Roland, Christof; Back, B. B.; Baker, M. D.; Barton, D. S.; Betts, R. R.; Ballintijn, M.; Bickley, A. A.; Bindel, R.; Budzanowski, A.; Busza, W.; Carroll, A.; Decowski, M. P.; Garcia, E.; George, N.; Gulbrandsen, K.; Gushue, S.; Halliwell, C.; Hamblen, J.; Heintzelman, G. A.; Henderson, C.; Hofman, D. J.; Hollis, R. S.; Hołyński, R.; Holzman, B.; Iordanova, A.; Johnson, E.; Kane, J. L.; Katzy, J.; Khan, N.; Kucewicz, W.; Kulinich, P.; Kuo, C. M.; Lin, W. T.; Manly, S.; McLeod, D.; Michałowski, J.; Mignerey, A. C.; Nouicer, R.; Olszewski, A.; Pak, R.; Park, I. C.; Pernegger, H.; Reed, C.; Remsberg, L. P.; Reuter, M.; Roland, C.; Roland, G.; Rosenberg, L.; Sarin, P.; Sawicki, P.; Skulski, W.; Steadman, S. G.; Steinberg, P.; Stephans, G. S. F.; Stodulski, M.; Sukhanov, A.; Tang, J.-L.; Teng, R.; Trzupek, A.; Vale, C.; van Nieuwenhuizen, G. J.; Verdier, R.; Wadsworth, B.; Wolfs, F. L. H.; Wosiek, B.; Woźniak, K.; Wuosmaa, A. H.; Wysłouch, B.

    2002-10-01

    We present an overview of the latest results for interactions of Au+Au ions at center-of-mass energies of √SNN of 56, 130 and 200 GeV obtained by the PHOBOS collaboration at the Relativistic Heavy Ion Collider (RHIC). These data have allowed us to perform an extensive study of the pseudorapidity density of primary charged particles as a function of incident energy, centrality and pseudorapidity. Our results show a non-trivial evolution of particle densities with both centrality and collision energy, reaching significantly higher values per participating nucleon than at lower energies or in nucleon-nucleon collisions. Further we present results on the azimuthal asymmetry of particle production observed in the √SNN of 130 GeV data set. The observed strong event anisotropy of v2max > 0.06, reaching beyond the value predicted in hadronic cascade models, indicates a closer approach to local thermal equilibration than at lower collision energies. The measured antiparticle-particle ratios of production rates for pions kaons and protons in central Au+Au interactions at √SNN of 130 GeV are compatible with predictions from statistical models, showing an approach to a baryon free region in mid-rapidity with the increase in collision energy.

  10. 47 CFR 0.1 - The Commission.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 1 2012-10-01 2012-10-01 false The Commission. 0.1 Section 0.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION Organization General § 0.1 The Commission. The Federal Communications Commission is composed of five (5) members who are appointed by the...

  11. 47 CFR 0.1 - The Commission.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false The Commission. 0.1 Section 0.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION Organization General § 0.1 The Commission. The Federal Communications Commission is composed of five (5) members who are appointed by the...

  12. THE COLLEGE COMMISSIONS.

    ERIC Educational Resources Information Center

    FOOKS, JOYCE LANE

    THE HISTORIES, ORGANIZATIONAL STRUCTURES, MODES OF OPERATION, GOALS, AND SPECIFIC ACTIVITIES OF EIGHT COLLEGE SCIENCE COMMISSIONS ARE PRESENTED. THE GOAL OF THE EIGHT COLLEGE SCIENCE COMMISSIONS IS TO BRING UNDERGRADUATE SCIENCE INSTRUCTION CLOSER TO THE RESEARCH FRONTIER, UPDATE COURSES, AND FOSTER THE SPIRIT OF INQUIRY. INTERCOMMISSION…

  13. 45 CFR 702.18 - Commission reports.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 45 Public Welfare 3 2012-10-01 2012-10-01 false Commission reports. 702.18 Section 702.18 Public Welfare Regulations Relating to Public Welfare (Continued) COMMISSION ON CIVIL RIGHTS RULES ON HEARINGS, REPORTS, AND MEETINGS OF THE COMMISSION Hearings and Reports § 702.18 Commission reports. (a) If a Commission report tends to defame, degrade, or...

  14. [Prostate histopathology of NIH category IV prostatitis detected by sextant prostate needle biopsy from the patients with high prostatic specific antigen].

    PubMed

    Shimomura, Tatsuya; Kiyota, Hiroshi; Takahashi, Hiroyuki; Madarame, Jun; Kimura, Takahiro; Onodera, Shouichi

    2003-08-01

    Asymptomatic prostatitis is classified as category IV in NIH classification of prostatitis syndrome (1999). No report concerning this category has been present. We investigated this category histopathologically and clinically, in order to clarify the histopathological distribution and its correlation to the clinical features, in this study. Among 785 patients who were suspected prostate cancer because of their high prostatic specific antigen (PSA) values and to have a sextant prostate needle biopsy was performed between January, 1996 and December, 2000, 88 patients (11.2%) were diagnosed as NIH category IV prostatitis (asymptomatic prostatitis). We observed all pathological specimens stained with Hematoxylin-Eosine, and classified them into subtypes according to the classification criteria for prostatitis defined by True et al. (1999). We also investigated the relationship between histopathological distribution and clinical features such as PSA values, PSA density, the incidence of pyuria or bacteriuria. In the histopathological study, grade distributions were 12.5% (11/88) in mild, 71.6% (63/88) in moderate, and 15.9% (14/88) in severe. Location distributions were 2.3% (2/88) in glandular, 68.2% (60/88) in periglandular, and 29.5% (26/88) in stromal. No relationship between these subtypes and clinical features was recognized statistically. However, 7 patients (7.95%) were diagnosed as prostate cancers, later. Pyuria was found in 29.1% (23/79). Bacteriuria was present in 14.3% (11/77). Isolated bacteria were 4 strains of Enterococcus faccalis, 2 strains of each of Pseudomonas aeruginosa and Staphylococcus aureus, and one strain of each of Escherichia coli, Klebsiella oxytoca, Enterobacter cloacae, Enterobacter aerogenes, Staphylococcus haemolyticus, and Staphylococcus epidermidis. Gram positive rod, and Candida sp. No relationship between these subtypes and bacterial species was recognized. These results indicated that the incidence of NIII category IV prostatits

  15. Results of Skylab experiment T00-2, manual navigation sightings

    NASA Technical Reports Server (NTRS)

    Randle, R. J.

    1976-01-01

    An analysis of navigation data collected using a hand-held space sextant on the second and third manned Skylab missions was presented. From performance data and astronaut comments it was determined that: (1) the space sextant, the sighting station, and the sighting techniques require modification; (2) the sighting window must be of good optical quality; (3) astronaut performance was stable over long mission time; and (4) sightings made with a hand-held sextant were accurate and precise enough for reliable interplanetary manual navigation.

  16. A description of the pseudorapidity distributions in heavy ion collisions at RHIC and LHC energies

    NASA Astrophysics Data System (ADS)

    Jiang, Z. J.; Zhang, Y.; Zhang, H. L.; Deng, H. P.

    2015-09-01

    The charged particles produced in nucleus-nucleus collisions are classified into two parts: One is from the hot and dense matter created in collisions. The other is from leading particles. The hot and dense matter is assumed to expand and generate particles according to BJP hydrodynamics, a theory put forward by A. Bialas, R.A. Janik and R. Peschanski. The leading particles are argued to possess a Gaussian rapidity distribution with the normalization constant equaling the number of participants. A comparison is made between the theoretical results and the experimental measurements performed by BRAHMS and PHOBOS Collaborations at BNL-RHIC in Au-Au and Cu-Cu collisions at √{sNN} = 200 GeV and by ALICE Collaboration at CERN-LHC in Pb-Pb collisions at √{sNN} = 2.76 TeV. The theoretical results are well consistent with experimental data.

  17. 47 CFR 1.5004 - Commission action.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Commission action. 1.5004 Section 1.5004 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE Exempt Telecommunications Companies § 1.5004 Commission action. If the Commission has not issued an order granting or denying an...

  18. 47 CFR 1.5004 - Commission action.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false Commission action. 1.5004 Section 1.5004 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE Exempt Telecommunications Companies § 1.5004 Commission action. If the Commission has not issued an order granting or denying an...

  19. Commissioning a materials research laboratory

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    SAVAGE,GERALD A.

    2000-03-28

    This presentation covers the process of commissioning a new 150,000 sq. ft. research facility at Sandia National Laboratories. The laboratory being constructed is a showcase of modern design methods being built at a construction cost of less than $180 per sq. ft. This is possible in part because of the total commissioning activities that are being utilized for this project. The laboratory's unique approach to commissioning will be presented in this paper. The process will be followed through from the conceptual stage on into the actual construction portion of the laboratory. Lessons learned and cost effectiveness will be presented inmore » a manner that will be usable for others making commissioning related decisions. Commissioning activities at every stage of the design will be presented along with the attributed benefits. Attendees will hear answers to the what, when, who, and why questions associated with commissioning of this exciting project.« less

  20. 16 CFR 1000.4 - Commission address.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Commission address. 1000.4 Section 1000.4 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL COMMISSION ORGANIZATION AND FUNCTIONS § 1000..., Bethesda, Maryland 20814. All written communications with the Commission, including those sent by U.S...

  1. A Study on Double Event Detection for PHENIX at RHIC

    NASA Astrophysics Data System (ADS)

    Vazquez-Carson, Sebastian; Phenix Collaboration

    2016-09-01

    Many measurements made in Heavy Ion experiments such as PHENIX at RHIC focus on geometrical properties because phenomena such as collective flow give insight into quark-gluon plasma and the strong nuclear force. As part of this investigation, PHENIX has taken data in 2016 for deuteron on gold collisions at several energies. An acceptable luminosity is achieved by injecting up to 120 separate bunches each with billions of ions into the storage ring, from which two, separate beams are made to collide. This method has a drawback as there is a chance for multiple pairs of nuclei to collide in a single bunch crossing. Data taken in a double event cannot be separated into two independent events and has no clear interpretation. This effect's magnitude is estimated and incorporated in published results as a systematic uncertainty and studies on this topic have already been conducted within PHENIX. I develop several additional algorithms to flag multiple interaction events by examining the time dependence of data from the two Beam-Beam Counters - detectors surrounding the beam pipe on opposite ends of the interaction region. The algorithms are tested with data, in which events with double interactions are artificially produced using low luminosity data. I am working at the University of Colorado at Boulder on behalf of the PHENIX collaboration.

  2. Some Calculations for the RHIC Kicker

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Claus, J.

    1996-12-01

    The bunches that arrive from the AGS are put on to RHIC's median plane by a string of four injection kickers in each ring. There are four short kickers rather than one long one in order to keep the kicker filling time acceptable, filling time being defined as the amount of time needed for increasing the deflecting field in the kicker from zero to its nominal value. During the filling time process the energy stored in the deflecting field is moved from outside the kicker to its aperture; since energy can only be displaced with finite velocity the filling timemore » is non-zero for kickers of non-zero length, and tends to increase with increasing length. It is one of the more important parameters of the kicker because it sets a lower limit to the time interval between the last of the already circulating bunches and the newly injected one, and thus an upper limit to the total number of bunches that can be injected. RF gymnastics can be used to pack the bunches tighter than is indicated by this limit, but such gymnastics required radial aperture beyond what would be required otherwise, as well as time, and probably special hardware. Minimization of the kicker's stored energy requires minimization of its aperture, it presents therefore a major aperture restriction. Unless it is placed at a point where the dispersion is negligible its aperture would have to be increased in order to provide the radial space needed for the gymnastics. Both the amount of extra space needed and the rate of longitudinal displacement increase with the maximum deviation in energy of the bunch to be displaced from the nominal value, thus taking more time for the exercise reduces the aperture requirements. This time is measured in terms of synchrotron periods and is not small. It adds directly to the filling time of each ring and decreases therefore the time-average luminosity. Evidently the maximation of the time-average luminosity is a complex issue in which the kicker filling time is a major

  3. 47 CFR 1.1528 - Commission review.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Commission review. 1.1528 Section 1.1528... Commission review. Either the applicant or Bureau counsel may seek Commission review of the initial decision on the application, or the Commission may decide to review the decision on its own initiative, in...

  4. 10 CFR 2.806 - Commission action.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 1 2011-01-01 2011-01-01 false Commission action. 2.806 Section 2.806 Energy NUCLEAR REGULATORY COMMISSION RULES OF PRACTICE FOR DOMESTIC LICENSING PROCEEDINGS AND ISSUANCE OF ORDERS Rulemaking § 2.806 Commission action. The Commission will incorporate in the notice of adoption of a regulation a...

  5. 10 CFR 2.806 - Commission action.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 1 2010-01-01 2010-01-01 false Commission action. 2.806 Section 2.806 Energy NUCLEAR REGULATORY COMMISSION RULES OF PRACTICE FOR DOMESTIC LICENSING PROCEEDINGS AND ISSUANCE OF ORDERS Rulemaking § 2.806 Commission action. The Commission will incorporate in the notice of adoption of a regulation a...

  6. MEASUREMENT OF SINGLE TRANSVERSE-SPIN ASYMMETRY IN FORWARD PRODUCTION OF PHOTONS AND NEUTRONS IN PP COLLSION AT SQUARE ROOT = 200 GEV.

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    BAZILEVSKY,A.MAKDISI,Y.ET AL.

    2002-09-09

    The Relativistic Heavy Ion Collider (RHIC) at the Brookhaven National Laboratory (BNL) was commissioned for polarized proton-proton collisions, at the center of mass energy {radical}s = 200 GeV during the run in 2001-2002. The authors have measured the single transverse-spin asymmetry A{sub N} for production of photons, neutral pions, and neutrons at the very forward angle. The asymmetries for the photon and neutral pion sample were consistent with zero within the experimental uncertainties. In contrast, the neutron sample exhibited an unexpectedly large asymmetry. This large asymmetry will be used for the non-destructive polarimeter for polarized proton beams at the collisionmore » points in the RHIC interaction region.« less

  7. High energy Coulomb-scattered electrons for relativistic particle beams and diagnostics

    DOE PAGES

    Thieberger, P.; Altinbas, Z.; Carlson, C.; ...

    2016-03-29

    A new system used for monitoring energetic Coulomb-scattered electrons as the main diagnostic for accurately aligning the electron and ion beams in the new Relativistic Heavy Ion Collider (RHIC) electron lenses is described in detail. The theory of electron scattering from relativistic ions is developed and applied to the design and implementation of the system used to achieve and maintain the alignment. Commissioning with gold and 3He beams is then described as well as the successful utilization of the new system during the 2015 RHIC polarized proton run. Systematic errors of the new method are then estimated. Lastly, some possiblemore » future applications of Coulomb-scattered electrons for beam diagnostics are briefly discussed.« less

  8. Cathode performance during two beam operation of the high current high polarization electron gun for eRHIC

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Rahman, O.; Ben-Zvi, I.; Degen, C.

    Two electron beams from two activated bulk GaAs photocathodes were successfully combined during the recent beam test of the High Current High Polarization Electron gun for eRHIC. The beam test took place in Stangenes Industries in Palo Alto, CA, where the cathodes were placed in diagonally opposite locations inside the high voltage shroud. No significant cross talking between the cathodes was found for the pertinent vacuum and low average current operation, which is very promising towards combining multiple beams for higher average current. This paper describes the cathode preparation, transport and cathode performance in the gun for the combining test,more » including the QE and lifetimes of the photocathodes at various steps of the experiment.« less

  9. 16 CFR 4.15 - Commission meetings.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Commission meetings. 4.15 Section 4.15... RULES § 4.15 Commission meetings. (a) In general. (1) Meetings of the Commission, as defined in 5 U.S.C... announcements of meetings. For each meeting, the Commission shall announce: (i) The time, place and subject...

  10. A combined model for pseudo-rapidity distributions in Cu-Cu collisions at BNL-RHIC energies

    NASA Astrophysics Data System (ADS)

    Jiang, Z. J.; Wang, J.; Huang, Y.

    2016-04-01

    The charged particles produced in nucleus-nucleus collisions come from leading particles and those frozen out from the hot and dense matter created in collisions. The leading particles are conventionally supposed having Gaussian rapidity distributions normalized to the number of participants. The hot and dense matter is assumed to expand according to the unified hydrodynamics, a hydro model which unifies the features of Landau and Hwa-Bjorken model, and freeze out into charged particles from a time-like hypersurface with a proper time of τFO. The rapidity distribution of this part of charged particles can be derived analytically. The combined contribution from both leading particles and unified hydrodynamics is then compared against the experimental data performed by BNL-RHIC-PHOBOS Collaboration in different centrality Cu-Cu collisions at sNN = 200 and 62.4GeV, respectively. The model predictions are consistent with experimental measurements.

  11. 47 CFR 0.463 - Disclosure of Commission records and information in legal proceedings in which the Commission is...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... information in legal proceedings in which the Commission is a non-party. 0.463 Section 0.463 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION General Information Public Information and Inspection of Records § 0.463 Disclosure of Commission records and information in legal...

  12. 47 CFR 0.463 - Disclosure of Commission records and information in legal proceedings in which the Commission is...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... information in legal proceedings in which the Commission is a non-party. 0.463 Section 0.463 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION General Information Public Information and Inspection of Records § 0.463 Disclosure of Commission records and information in legal...

  13. 47 CFR 0.463 - Disclosure of Commission records and information in legal proceedings in which the Commission is...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... information in legal proceedings in which the Commission is a non-party. 0.463 Section 0.463 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION General Information Public Information and Inspection of Records § 0.463 Disclosure of Commission records and information in legal...

  14. 47 CFR 0.463 - Disclosure of Commission records and information in legal proceedings in which the Commission is...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... information in legal proceedings in which the Commission is a non-party. 0.463 Section 0.463 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION General Information Public Information and Inspection of Records § 0.463 Disclosure of Commission records and information in legal...

  15. 47 CFR 0.463 - Disclosure of Commission records and information in legal proceedings in which the Commission is...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... information in legal proceedings in which the Commission is a non-party. 0.463 Section 0.463 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION General Information Public Information and Inspection of Records § 0.463 Disclosure of Commission records and information in legal...

  16. Bioethics commission to review gene patenting

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Rothenburg, L.

    1995-12-01

    In October, in an unexpected development, U.S. President Bill Clinton created a national ethics advisory board, the National Bioethics Advisory Commission (NBAC, Washington, DC), to study both research ethics and the management and use of genetic information. Of particular interest to biotechnology companies and researchers is the fact that the commission`s brief encompasses issues about human gene patenting, a subject not contained in earlier proposals for the commission.

  17. Azimuthal anisotropy of strange hadrons in U+U collisions at √SNN = 193 GeV at RHIC

    NASA Astrophysics Data System (ADS)

    Bairathi, Vipul

    2018-02-01

    We present the measurement of the azimuthal anisotropy of strange hadrons (K0s, ϕ and Λ) at mid-rapidity (|y| < 1.0) in U+U collisions at = 193 GeV using the STAR detector at RHIC. We present the centrality and transverse momentum dependence of flow coefficients υn for n = 2, 3, 4. A strong centrality dependence of υ2 is observed for the particles K0s, ϕ and Λ in U+U collisions at = 193 GeV similar to Au+Au collisions at = 200 GeV. We studied the number of constituent quark scaling (NCQ) of the flow coefficients. The NCQ scaling of the flow coefficients holds within uncertainties for the particles studied in the U+U collisions. We also present the comparison of the results to the AMPT transport model.

  18. The Building Commissioning Handbook.

    ERIC Educational Resources Information Center

    Heinz, John A.; Casault, Rick

    This book discusses building commissioning, which is the process of certifying that a new facility meets the required specifications. As buildings have become more complex, the traditional methods for building start-up and final acceptance have been proven inadequate, and building commissioning has been developed, which often necessitates the use…

  19. 76 FR 63325 - National Indian Gaming Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-12

    ... DEPARTMENT OF THE INTERIOR National Indian Gaming Commission AGENCY: National Indian Gaming Commission. ACTION: Notice of no action. SUMMARY: On November 18, 2010, the National Indian Gaming Commission... Review Schedule. FOR FURTHER INFORMATION CONTACT: National Indian Gaming Commission, 1441 L Street NW...

  20. 77 FR 39560 - International Joint Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-03

    ... DEPARTMENT OF STATE [Public Notice 7945] International Joint Commission International Joint Commission Invites Public Comment on Upper Great Lakes Report The International Joint Commission (IJC) announced today that it is inviting public comment on the final report of its International Upper Great...

  1. Blue Ribbon Commissions and Higher Education. ERIC Digest.

    ERIC Educational Resources Information Center

    Johnson, Janet R.; Marcus, Laurence R.

    Blue ribbon commissions in the United States from 1965-1983 are discussed with attention to what makes a commission effective, the history of blue ribbon commissions, features of a commission, whether these commissions are useful on campus, and criticisms of blue ribbon commissions. Factors that contribute to the effectiveness of a blue ribbon…

  2. Negative elliptic flow of J/ψ's: A qualitative signature for charm collectivity at RHIC

    NASA Astrophysics Data System (ADS)

    Krieg, D.; Bleicher, M.

    2009-01-01

    We discuss one of the most prominent features of the very recent preliminary elliptic flow data of J/ψ-mesons from the PHENIX Collaboration (PHENIX Collaboration (C. Silvestre), arXiv:0806.0475 [nucl-ex]). Even within the rather large error bars of the measured data a negative elliptic flow parameter (v2) for J/ψ in the range of p T = 0.5-2.5 GeV/ c is visible. We argue that this negative elliptic flow at intermediate pT is a clear and qualitative signature for the collectivity of charm quarks produced in nucleus-nucleus reactions at RHIC. Within a parton recombination approach we show that a negative elliptic flow puts a lower limit on the collective transverse velocity of heavy quarks. The numerical value of the transverse flow velocity βT^{} for charm quarks that is necessary to reproduce the data is βT^{}( charm) ˜ 0.55-0.6 c and therefore compatible with the flow of light quarks.

  3. 39 CFR 3060.42 - Commission review.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false Commission review. 3060.42 Section 3060.42 Postal Service POSTAL REGULATORY COMMISSION PERSONNEL ACCOUNTING PRACTICES AND TAX RULES FOR THE THEORETICAL COMPETITIVE PRODUCTS ENTERPRISE § 3060.42 Commission review. (a) Interested persons shall be provided an...

  4. Station Explorer for X-Ray Timing and Navigation Technology Architecture Overview

    NASA Technical Reports Server (NTRS)

    Hasouneh, Monther Abdel Hamid

    2014-01-01

    The Station Explorer for X-ray Timing and Navigation Technology (SEXTANT) is a technology demonstration enhancement to the Neutron-star Interior Composition Explorer (NICER) mission. NICER is a NASA astrophysics Explorer Mission of Opportunity, scheduled for launch in mid-2016, that will be hosted on the International Space Station (ISS) via the ExPRESS Logistics Carrier (ELC). By exploiting the regular pulsations emit-ted by the ultra dense remnants of dead stars, which rotate many hundreds of times per second, SEXTANT will, for the first-time, demonstrate real-time, on-board X-ray pulsar-based navigation is a significant milestone in the quest to establish a GPS-like navigation capability available throughout our Solar System and beyond and include the worlds first completely functional system architecture for navigation using X-ray pulsars. In addition, NICER SEXTANT will investigate the suit-ability of these millisecond X-ray pulsars (MSPs) as a Solar System-wide timing infrastructure to rival terrestrial atomic clocks on long timescales. This paper provides a brief overview of the SEXTANT demonstration and the design of the system architecture that consists of the NICER X-ray timing instrument, the SEXTANT flight software and algorithms, supporting ground system, and the GSFC X-ray Navigation Laboratory Testbed (GXLT).

  5. 78 FR 36770 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-19

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following stakeholder meeting related to the transmission planning...

  6. 78 FR 38313 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-26

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following joint stakeholder meeting related to the transmission planning...

  7. 78 FR 39728 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-02

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following joint stakeholder meeting related to the transmission planning...

  8. 29 CFR 1626.15 - Commission enforcement.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 4 2012-07-01 2012-07-01 false Commission enforcement. 1626.15 Section 1626.15 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.15 Commission enforcement. (a) As provided in sections 9, 11, 16 and 17...

  9. 29 CFR 1626.15 - Commission enforcement.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 4 2011-07-01 2011-07-01 false Commission enforcement. 1626.15 Section 1626.15 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.15 Commission enforcement. (a) As provided in sections 9, 11, 16 and 17...

  10. 29 CFR 1626.15 - Commission enforcement.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 4 2010-07-01 2010-07-01 false Commission enforcement. 1626.15 Section 1626.15 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.15 Commission enforcement. (a) As provided in sections 9, 11, 16 and 17...

  11. 29 CFR 1626.15 - Commission enforcement.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 4 2014-07-01 2014-07-01 false Commission enforcement. 1626.15 Section 1626.15 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.15 Commission enforcement. (a) As provided in sections 9, 11, 16 and 17...

  12. 10 CFR 2.1331 - Commission action.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 1 2010-01-01 2010-01-01 false Commission action. 2.1331 Section 2.1331 Energy NUCLEAR REGULATORY COMMISSION RULES OF PRACTICE FOR DOMESTIC LICENSING PROCEEDINGS AND ISSUANCE OF ORDERS Procedures for Hearings on License Transfer Applications § 2.1331 Commission action. (a) Upon completion of a...

  13. 47 CFR 1.425 - Commission action.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false Commission action. 1.425 Section 1.425... Proceedings § 1.425 Commission action. The Commission will consider all relevant comments and material of record before taking final action in a rulemaking proceeding and will issue a decision incorporating its...

  14. 47 CFR 1.425 - Commission action.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Commission action. 1.425 Section 1.425... Proceedings § 1.425 Commission action. The Commission will consider all relevant comments and material of record before taking final action in a rulemaking proceeding and will issue a decision incorporating its...

  15. 10 CFR 2.1331 - Commission action.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 1 2011-01-01 2011-01-01 false Commission action. 2.1331 Section 2.1331 Energy NUCLEAR REGULATORY COMMISSION RULES OF PRACTICE FOR DOMESTIC LICENSING PROCEEDINGS AND ISSUANCE OF ORDERS Procedures for Hearings on License Transfer Applications § 2.1331 Commission action. (a) Upon completion of a...

  16. 77 FR 11531 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-27

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the...

  17. 78 FR 14783 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-07

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of ISO...

  18. 77 FR 30003 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the...

  19. 77 FR 73645 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the...

  20. 77 FR 3765 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-25

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the...

  1. 77 FR 42717 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the...

  2. 7 CFR 1780.48 - Regional commission grants.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 12 2010-01-01 2010-01-01 false Regional commission grants. 1780.48 Section 1780.48... Regional commission grants. Grants are sometimes made by regional commissions for projects eligible for RUS...) When RUS has funds in the project, no charge will be made for administering regional commission funds...

  3. 76 FR 55424 - CFC-50 Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-07

    ...'' groups. The Commission is co-chaired by Thomas Davis and Beverly Byron. FOR FURTHER INFORMATION CONTACT... frequency of meetings will be determined by the co-chairs of the Commission with the approval of the DFO. It... representatives and special government employees. 13. Subcommittees. The co-chairs of the Commission, with the...

  4. 10 CFR 110.40 - Commission review.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Commission review. 110.40 Section 110.40 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) EXPORT AND IMPORT OF NUCLEAR EQUIPMENT AND MATERIAL Review of License Applications § 110.40 Commission review. (a) Immediately after receipt of a license application for an export...

  5. 10 CFR 110.40 - Commission review.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Commission review. 110.40 Section 110.40 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) EXPORT AND IMPORT OF NUCLEAR EQUIPMENT AND MATERIAL Review of License Applications § 110.40 Commission review. (a) Immediately after receipt of a license application for an export...

  6. 10 CFR 110.40 - Commission review.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 2 2013-01-01 2013-01-01 false Commission review. 110.40 Section 110.40 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) EXPORT AND IMPORT OF NUCLEAR EQUIPMENT AND MATERIAL Review of License Applications § 110.40 Commission review. (a) Immediately after receipt of a license application for an export...

  7. Effect of sea quarks on single-spin asymmetries ANW± in transversely polarized pp collisions at RHIC

    NASA Astrophysics Data System (ADS)

    Tian, Fang; Gong, Chang; Ma, Bo-Qiang

    2017-12-01

    We calculate the single-spin asymmetries ANW± of W± bosons produced in transversely polarized pp collisions with the valence part of the up (u) and down (d) quark Sivers functions treated by an available parametrization and the light-cone quark spectator-diquark model respectively, while the sea part Sivers functions of u and d quarks treated as parametrization. Comparing our results with those from experimental data at RHIC, we find that the Sivers functions of sea quarks play an important role in the determination of the shapes of ANW±. It is shown that ANW- is sensitive to u sea Sivers function, while ANW+ to d sea Sivers function intuitively. The results show that the contributions of u and d sea Sivers functions are rather sizable and of the same sign, and their signs agree with that of d valence quarks and are opposite to that of u valence quarks.

  8. 17 CFR 201.57 - Commission review.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 2 2010-04-01 2010-04-01 false Commission review. 201.57... Regulations Pertaining to the Equal Access to Justice Act § 201.57 Commission review. In accordance with the... Division of the Commission may seek review of the initial decision on the fee application, or the...

  9. Commissions, Reports, Reforms, and Educational Policy.

    ERIC Educational Resources Information Center

    Ginsberg, Rick, Ed.; Plank, David N., Ed.

    "Blue-ribbon" commissions are an increasingly common feature of the American political landscape. This book examines the roles that blue-ribbon commissions and their reports have played in educational policymaking. The book begins with a foreword by Paul E. Peterson and an introductory chapter, "Commissions and Change" by Rick Ginsberg and David…

  10. 18 CFR 375.101 - The Commission.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 18 Conservation of Power and Water Resources 1 2013-04-01 2013-04-01 false The Commission. 375.101 Section 375.101 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT...:30 a.m. to 5:00 p.m. (d) Sessions. The Commission may meet and exercise its powers at any place in...

  11. 18 CFR 375.101 - The Commission.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 18 Conservation of Power and Water Resources 1 2012-04-01 2012-04-01 false The Commission. 375.101 Section 375.101 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT...:30 a.m. to 5:00 p.m. (d) Sessions. The Commission may meet and exercise its powers at any place in...

  12. 18 CFR 375.101 - The Commission.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 18 Conservation of Power and Water Resources 1 2014-04-01 2014-04-01 false The Commission. 375.101 Section 375.101 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT...:30 a.m. to 5:00 p.m. (d) Sessions. The Commission may meet and exercise its powers at any place in...

  13. 18 CFR 375.101 - The Commission.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 1 2011-04-01 2011-04-01 false The Commission. 375.101 Section 375.101 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT...:30 a.m. to 5:00 p.m. (d) Sessions. The Commission may meet and exercise its powers at any place in...

  14. 10 CFR 110.113 - Commission action.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Commission action. 110.113 Section 110.113 Energy NUCLEAR... Commission action. (a) Upon completion of a hearing, the Commission will issue a written opinion including... hearing issues; and (4) Take other action, as appropriate. [43 FR 21641, May 19, 1978, as amended at 64 FR...

  15. 10 CFR 110.113 - Commission action.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Commission action. 110.113 Section 110.113 Energy NUCLEAR... Commission action. (a) Upon completion of a hearing, the Commission will issue a written opinion including... hearing issues; and (4) Take other action, as appropriate. [43 FR 21641, May 19, 1978, as amended at 64 FR...

  16. 17 CFR 144.1 - Service upon the Commission.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... paragraph (e) of this section, the Secretary of the Commission is the only person authorized to accept... demand must be addressed to the Secretary of the Commission, Three Lafayette Centre, 1155 21st Street, NW... Commission other than the Secretary of the Commission, unless otherwise directed by the Commission's General...

  17. 17 CFR 144.1 - Service upon the Commission.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...) Subject to paragraph (e) of this section, the Secretary of the Commission is the only person authorized to... demand must be addressed to the Secretary of the Commission, Three Lafayette Centre, 1155 21st Street, NW... Commission other than the Secretary of the Commission, unless otherwise directed by the Commission's General...

  18. 17 CFR 144.1 - Service upon the Commission.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... paragraph (e) of this section, the Secretary of the Commission is the only person authorized to accept... demand must be addressed to the Secretary of the Commission, Three Lafayette Centre, 1155 21st Street, NW... Commission other than the Secretary of the Commission, unless otherwise directed by the Commission's General...

  19. 17 CFR 144.1 - Service upon the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... paragraph (e) of this section, the Secretary of the Commission is the only person authorized to accept... demand must be addressed to the Secretary of the Commission, Three Lafayette Centre, 1155 21st Street, NW... Commission other than the Secretary of the Commission, unless otherwise directed by the Commission's General...

  20. 17 CFR 144.1 - Service upon the Commission.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... paragraph (e) of this section, the Secretary of the Commission is the only person authorized to accept... demand must be addressed to the Secretary of the Commission, Three Lafayette Centre, 1155 21st Street, NW... Commission other than the Secretary of the Commission, unless otherwise directed by the Commission's General...

  1. Parameterization and study of elliptic flow coefficient for Au+Au and Cu+Cu collisions at RHIC energy 200 GeV/A

    NASA Astrophysics Data System (ADS)

    Kumar, Somani Ajit; Bright, Keswani; Sudhir, Bhardwaj; Ashish, Agnihotri

    2018-05-01

    Elliptic flow coefficient is important observable in search of Quark Gluon Plasma. The variation of elliptic flow coefficient with centrality were studied using events generated by AMPT (Default) for Au+Au and Cu+Cu collisions at center of mass energy of 200 GeV/A. We compared the simulated data results with RHIC-PHENIX experimental results and found close agreement between them. The study of the variation of the v2 for Au+Au and Cu+Cu was parameterized by fitting. We proposed a new formula to predict the expected value of v2 at particular centrality for Au+Au or Cu+Cu at 200 GeV/A.

  2. The work of commissioning: a multisite case study of healthcare commissioning in England's NHS

    PubMed Central

    Shaw, Sara E; Smith, Judith A; Porter, Alison; Rosen, Rebecca; Mays, Nicholas

    2013-01-01

    Objective To examine the work of commissioning care for people with long-term conditions and the factors inhibiting or facilitating commissioners making service change. Design Multisite mixed methods case study research, combining qualitative analysis of interviews, documents and observation of meetings. Participants Primary care trust managers and clinicians, general practice-based commissioners, National Health Service trust and foundation trust senior managers and clinicians, voluntary sector and local government representatives. Setting Three ‘commissioning communities’ (areas covered by a primary care trust) in England, 2010–2012. Results Commissioning services for people with long-term conditions was a long drawn-out process involving a range of activities and partners. Only some of the activities undertaken by commissioners, such as assessment of local health needs, coordination of healthcare planning and service specification, appeared in the official ‘commissioning cycle’ promoted by the Department of Health. Commissioners undertook a significant range of additional activities focused on reviewing and redesigning services and providing support for implementation of new services. These activities often involved partnership working with providers and other stakeholders and appeared to be largely divorced from contracting and financial negotiations. At least for long-term condition services, the time and effort involved in such work appeared to be disproportionate to the anticipated or likely service gains. Commissioners adopting an incremental approach to service change in defined and manageable areas of work appeared to be more successful in terms of delivering planned changes in service delivery than those attempting to bring about wide-scale change across complex systems. Conclusions Commissioning for long-term condition services challenges the conventional distinction between commissioners and providers with a significant amount of work focused

  3. Expedition 23 State Commission

    NASA Image and Video Library

    2010-03-31

    Expedition 23 NASA Flight Engineer Tracy Caldwell Dyson, left, speaks during the State Commission meeting at the Cosmonaut Hotel while her colleagues Soyuz Commander Alexander Skvortsov and Flight Engineer Mikhail Kornienko, right, listen on Thursday, April 1, 2010 in Baikonur, Kazakhstan. The State Commission meeting approves the Soyuz launch of Caldwell Dyson, Skvortsov and Kornienko to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

  4. The Industry Commission inquiry into charitable organisations.

    PubMed

    Suter, K

    1996-01-01

    The Industry Commission has carried out Australia's largest inquiry into charities. It was, from the point of view of charities, an unsatisfactory operation, all the more so since it was not clear why the task had been given to the commission. This article examines the commission's work in three ways: the overall relationship between government and charities; the commission's proposed major reforms; and the minor reforms.

  5. Expedition 23 State Commission

    NASA Image and Video Library

    2010-03-31

    Expedition 23 Soyuz Commander Alexander Skvortsov, center, holds up a poster of the Expedition 23 crew while Flight Engineer Tracy Caldwell Dyson and Flight Engineer Mikhail Kornienko, right, smile during the State Commission meeting held at the Cosmonaut Hotel, Thursday, April 1, 2010 in Baikonur, Kazakhstan. The State Commission meeting approves the Soyuz launch of Caldwell Dyson, Skvortsov and Kornienko to the International Space Station. Photo Credit: (NASA/Bill Ingalls)

  6. Boys' Reading Commission 2012: A Review of Existing Research Conducted to Underpin the Commission

    ERIC Educational Resources Information Center

    Clark, Christina

    2012-01-01

    The gender gap has been a hotly debated issue, both nationally and internationally. In 2000, the then Department for Education and Schools commissioned a four-year study into raising boys' achievement. The commission worked with over 60 primary, secondary and special schools in England to identify and evaluate the strategies highlighted to be…

  7. Commission 53: Extra-Solar Planets

    NASA Astrophysics Data System (ADS)

    Boss, Alan; Lecavelier des Etangs, Alain; Mayor, Michel; Bodenheimer, Peter; Collier-Cameron, Andrew; Kokubo, Eiichiro; Mardling, Rosemary; Minniti, Dante; Queloz, Didier

    2010-05-01

    Commission 53 met in August 12, 2009. Outgoing President Michel Mayor chaired the meeting, and there were several dozen members present, including incoming President Alan Boss, incoming Vice President Alain Lecavelier des Etangs. Commission 53 (C53) was founded at the 2006 Prague General Assembly of the IAU. After a period of 6 years, C53 will come up for renewal at the 2012 IAU General Assembly in Beijing, China. For the moment, more than 150 IAU members have asked to be members of C53 and few dozen non-IAU members having asked to be informed of the commission activity.

  8. Prior fluoridation in childhood affects dental caries and tooth wear in a south east Queensland population.

    PubMed

    Teo, C; Young, W G; Daley, T J; Sauer, H

    1997-04-01

    Fluoride exposure in early life has an effect on dental caries experience, but does it affect tooth wear in later life? Ninety-six South East Queensland subjects were studied. Their histories revealed three groups; a fluoride (F-) in water supply, a F- by supplement, and a non-fluoridated (non F-) group. Significantly higher caries experience was found in the non-F- group compared with F- in water group and the F- supplement group. No statistically significant difference in caries experience was found between the F- in water and F- supplement groups. Overall, tooth wear affected more sextants of the dentitions of non-fluoridated, high-caries subjects than of fluoridated low-caries subjects. Comparisons of wear patterns on sextants of the dentitions, between the fluoridated and non-fluoridated groups, revealed that in sextants where attrition was present no marked differences were discernible between the two groups. However, in most sextants where incisal, palatal, occlusal or non-occlusal erosion was found, this type of wear was commoner in non-fluoridated subjects. The exceptions were the mandibular molar sextants, where prior fluoride-exposure did not appear to protect against occlusal erosion patterns. This study showed that fluoride exposure during the first 12 years of life, which reduced dental caries in this population, may also protect teeth from wear to some extent.

  9. 77 FR 6556 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-08

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff..., Dallas, Texas 72501. The above-referenced meeting is open to stakeholders. Further information may be...

  10. 77 FR 36532 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-19

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the New York...

  11. 77 FR 75630 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of ISO New England...

  12. 77 FR 73645 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Midwest...

  13. 77 FR 50492 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Midwest...

  14. 77 FR 75630 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the interregional transmission planning activities of the...

  15. 77 FR 24486 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-24

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the New York...

  16. 77 FR 38045 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-26

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of ISO New England...

  17. 77 FR 38045 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-26

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Midwest...

  18. 77 FR 24485 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-24

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Midwest...

  19. 77 FR 40606 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-10

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Midwest...

  20. 77 FR 30003 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-21

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the PJM...

  1. 77 FR 34034 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-08

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Southwest...

  2. 77 FR 37665 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-22

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the North Carolina...

  3. 77 FR 38046 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-26

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the Southern...

  4. 77 FR 34378 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-11

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the New York...

  5. 77 FR 65680 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-30

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the interregional transmission planning activities of the...

  6. 76 FR 60820 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-30

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meeting related to the transmission planning activities of the Midwest...

  7. 77 FR 42718 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Southwest...

  8. 77 FR 60980 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-05

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meetings related to the transmission planning activities of the Mid-Continent...

  9. 77 FR 50097 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-20

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff... Room, 1015 Elm St., Dallas, Texas 75201. The above-referenced meetings and teleconferences are open to...

  10. 77 FR 60980 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-05

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission hereby gives notice that members of the Commission's staff may attend the following meeting held by the Organization of PJM States, Inc. (OPSI): OPSI's Eighth...

  11. 77 FR 21978 - Notice of Commission Staff Attendance

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-12

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance The Federal Energy Regulatory Commission (Commission) hereby gives notice that members of the... Transmission LLC. Docket No. EL12-28 Xcel Energy. Docket No. ER12-1357 Louisville Gas and Electric Company...

  12. 17 CFR 171.28 - Participation by Commission staff.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... staff. 171.28 Section 171.28 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION..., Membership Denial and Registration Actions § 171.28 Participation by Commission staff. The Division of.... The Commission shall by order establish a supplementary briefing schedule for the Commission staff and...

  13. 17 CFR 171.28 - Participation by Commission staff.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... staff. 171.28 Section 171.28 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION..., Membership Denial and Registration Actions § 171.28 Participation by Commission staff. The Division of.... The Commission shall by order establish a supplementary briefing schedule for the Commission staff and...

  14. 17 CFR 171.28 - Participation by Commission staff.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... staff. 171.28 Section 171.28 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION..., Membership Denial and Registration Actions § 171.28 Participation by Commission staff. The Division of.... The Commission shall by order establish a supplementary briefing schedule for the Commission staff and...

  15. 17 CFR 171.28 - Participation by Commission staff.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... staff. 171.28 Section 171.28 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION..., Membership Denial and Registration Actions § 171.28 Participation by Commission staff. The Division of.... The Commission shall by order establish a supplementary briefing schedule for the Commission staff and...

  16. Securities and Exchange Commission's regulation of public utility holding companies: an evaluation of Commission comments on a critical report

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Staats, E.B.

    1978-01-04

    A report entitled: The Force of the Public Utility Holding Company Act Has Been Greatly Reduced By Changes in the Securities and Exchange Commission's Enforcement Policies, was issued June 20, 1977 by the GAO. The report raised questions concerning the narrowness of the Commission's administration of a statute which the Congress had intended to be wide-ranging and pervasive. On June 30, 1977, the Securities and Exchange Commission issued comments rejecting all of the reports recommendations. This report summarizes the findings of GAO's earlier report. GAO's evaluation of the Commission comments is presented in Appendix I and the Commission's comments aremore » presented in Appendix II.« less

  17. 16 CFR 1018.23 - Designated Commission employee.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Designated Commission employee. 1018.23 Section 1018.23 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Operation of Advisory Committees § 1018.23 Designated Commission employee. (a) The Chairman shall...

  18. 76 FR 4369 - Special Law Enforcement Commissions

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ... DEPARTMENT OF THE INTERIOR Bureau of Indian Affairs Special Law Enforcement Commissions AGENCY... of the Interim Special Law Enforcement Commission Policy, Rules and Procedures, the Interim Special Law Enforcement Commission Protocols and the Interim Domestic Violence Waiver that will be used by the...

  19. 47 CFR 1.1 - Proceedings before the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Proceedings before the Commission. 1.1 Section 1.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE General Rules of Practice and Procedure General § 1.1 Proceedings before the Commission. The Commission may on its...

  20. 47 CFR 1.1 - Proceedings before the Commission.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false Proceedings before the Commission. 1.1 Section 1.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE General Rules of Practice and Procedure General § 1.1 Proceedings before the Commission. The Commission may on its...

  1. 19 CFR 213.5 - Access to Commission resources.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 3 2010-04-01 2010-04-01 false Access to Commission resources. 213.5 Section 213.5 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION INVESTIGATIONS OF UNFAIR PRACTICES IN IMPORT TRADE TRADE REMEDY ASSISTANCE § 213.5 Access to Commission resources. Commission resources, in...

  2. 19 CFR 213.5 - Access to Commission resources.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 3 2011-04-01 2011-04-01 false Access to Commission resources. 213.5 Section 213.5 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION INVESTIGATIONS OF UNFAIR PRACTICES IN IMPORT TRADE TRADE REMEDY ASSISTANCE § 213.5 Access to Commission resources. Commission resources, in...

  3. 19 CFR 213.5 - Access to Commission resources.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 3 2013-04-01 2013-04-01 false Access to Commission resources. 213.5 Section 213.5 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION INVESTIGATIONS OF UNFAIR PRACTICES IN IMPORT TRADE TRADE REMEDY ASSISTANCE § 213.5 Access to Commission resources. Commission resources, in...

  4. 19 CFR 213.5 - Access to Commission resources.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 19 Customs Duties 3 2014-04-01 2014-04-01 false Access to Commission resources. 213.5 Section 213.5 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION INVESTIGATIONS OF UNFAIR PRACTICES IN IMPORT TRADE TRADE REMEDY ASSISTANCE § 213.5 Access to Commission resources. Commission resources, in...

  5. 47 CFR 1.1 - Proceedings before the Commission.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 1 2014-10-01 2014-10-01 false Proceedings before the Commission. 1.1 Section 1.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE General Rules of Practice and Procedure General § 1.1 Proceedings before the Commission. The Commission may on its...

  6. 47 CFR 1.1 - Proceedings before the Commission.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 1 2012-10-01 2012-10-01 false Proceedings before the Commission. 1.1 Section 1.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE General Rules of Practice and Procedure General § 1.1 Proceedings before the Commission. The Commission may on its...

  7. 47 CFR 1.1 - Proceedings before the Commission.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 1 2013-10-01 2013-10-01 false Proceedings before the Commission. 1.1 Section 1.1 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE General Rules of Practice and Procedure General § 1.1 Proceedings before the Commission. The Commission may on its...

  8. 47 CFR 0.420 - Other Commission publications.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Other Commission publications. 0.420 Section 0... Information Printed Publications § 0.420 Other Commission publications. The following additional Commission publications may be purchased from the Superintendent of Documents: (a) Statistics of Communications Common...

  9. 47 CFR 0.420 - Other Commission publications.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 1 2013-10-01 2013-10-01 false Other Commission publications. 0.420 Section 0... Information Printed Publications § 0.420 Other Commission publications. The following additional Commission publications may be purchased from the Superintendent of Documents: (a) Statistics of Communications Common...

  10. 47 CFR 0.420 - Other Commission publications.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false Other Commission publications. 0.420 Section 0... Information Printed Publications § 0.420 Other Commission publications. The following additional Commission publications may be purchased from the Superintendent of Documents: (a) Statistics of Communications Common...

  11. 47 CFR 0.420 - Other Commission publications.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 1 2014-10-01 2014-10-01 false Other Commission publications. 0.420 Section 0... Information Printed Publications § 0.420 Other Commission publications. The following additional Commission publications may be purchased from the Superintendent of Documents: (a) Statistics of Communications Common...

  12. 77 FR 29621 - Equity and Excellence Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-18

    ...: The Commission will meet in Washington, DC at the United States Department of Education at 400... Equity and Excellence Commission will hold an open meeting in Washington, DC at the United States... DEPARTMENT OF EDUCATION Equity and Excellence Commission AGENCY: U.S. Department of Education...

  13. 18 CFR 388.106 - Requests for Commission records available in the Public Reference Room and from the Commission's...

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 18 Conservation of Power and Water Resources 1 2010-04-01 2010-04-01 false Requests for Commission records available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov... available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov. (a)(1) A...

  14. 18 CFR 388.106 - Requests for Commission records available in the Public Reference Room and from the Commission's...

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 18 Conservation of Power and Water Resources 1 2012-04-01 2012-04-01 false Requests for Commission records available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov... available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov. (a)(1) A...

  15. 18 CFR 388.106 - Requests for Commission records available in the Public Reference Room and from the Commission's...

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 18 Conservation of Power and Water Resources 1 2011-04-01 2011-04-01 false Requests for Commission records available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov... available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov. (a)(1) A...

  16. 18 CFR 388.106 - Requests for Commission records available in the Public Reference Room and from the Commission's...

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 18 Conservation of Power and Water Resources 1 2014-04-01 2014-04-01 false Requests for Commission records available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov... available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov. (a)(1) A...

  17. 18 CFR 388.106 - Requests for Commission records available in the Public Reference Room and from the Commission's...

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 18 Conservation of Power and Water Resources 1 2013-04-01 2013-04-01 false Requests for Commission records available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov... available in the Public Reference Room and from the Commission's web site, http://www.ferc.gov. (a)(1) A...

  18. 28 CFR 0.124 - United States Parole Commission.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 28 Judicial Administration 1 2013-07-01 2013-07-01 false United States Parole Commission. 0.124 Section 0.124 Judicial Administration DEPARTMENT OF JUSTICE ORGANIZATION OF THE DEPARTMENT OF JUSTICE United States Parole Commission § 0.124 United States Parole Commission. The U.S. Parole Commission is...

  19. 28 CFR 0.124 - United States Parole Commission.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 28 Judicial Administration 1 2011-07-01 2011-07-01 false United States Parole Commission. 0.124 Section 0.124 Judicial Administration DEPARTMENT OF JUSTICE ORGANIZATION OF THE DEPARTMENT OF JUSTICE United States Parole Commission § 0.124 United States Parole Commission. The U.S. Parole Commission is...

  20. 28 CFR 0.124 - United States Parole Commission.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 28 Judicial Administration 1 2012-07-01 2012-07-01 false United States Parole Commission. 0.124 Section 0.124 Judicial Administration DEPARTMENT OF JUSTICE ORGANIZATION OF THE DEPARTMENT OF JUSTICE United States Parole Commission § 0.124 United States Parole Commission. The U.S. Parole Commission is...

  1. 28 CFR 0.124 - United States Parole Commission.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 28 Judicial Administration 1 2014-07-01 2014-07-01 false United States Parole Commission. 0.124 Section 0.124 Judicial Administration DEPARTMENT OF JUSTICE ORGANIZATION OF THE DEPARTMENT OF JUSTICE United States Parole Commission § 0.124 United States Parole Commission. The U.S. Parole Commission is...

  2. 28 CFR 0.124 - United States Parole Commission.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 28 Judicial Administration 1 2010-07-01 2010-07-01 false United States Parole Commission. 0.124 Section 0.124 Judicial Administration DEPARTMENT OF JUSTICE ORGANIZATION OF THE DEPARTMENT OF JUSTICE United States Parole Commission § 0.124 United States Parole Commission. The U.S. Parole Commission is...

  3. 29 CFR 2200.92 - Review by the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH REVIEW COMMISSION RULES OF PROCEDURE Posthearing Procedures § 2200.92 Review by the Commission. (a) Jurisdiction of the Commission; issues on... Commission to review the entire case. The issues to be decided on review are within the discretion of the...

  4. Vermont Technical Education Commission Report.

    ERIC Educational Resources Information Center

    Vermont State Technical Education Commission, Montpelier.

    A 1968 New England Regional Commission grant to the Vermont Department of Administration financed a feasibility study for a technical college at the postsecondary level. The commission undertook two specific studies: an examination of ultimate career destinations of Vermont secondary students and a survey of Vermont industry to determine immediate…

  5. Mass hierarchy and energy scaling of the Tsallis - Pareto parameters in hadron productions at RHIC and LHC energies

    NASA Astrophysics Data System (ADS)

    Bíró, Gábor; Barnaföldi, Gergely Gábor; Biró, Tamás Sándor; Shen, Keming

    2018-02-01

    The latest, high-accuracy identified hadron spectra measurements in highenergy nuclear collisions led us to the investigation of the strongly interacting particles and collective effects in small systems. Since microscopical processes result in a statistical Tsallis - Pareto distribution, the fit parameters q and T are well suited for identifying system size scalings and initial conditions. Moreover, parameter values provide information on the deviation from the extensive, Boltzmann - Gibbs statistics in finite-volumes. We apply here the fit procedure developed in our earlier study for proton-proton collisions [1, 2]. The observed mass and center-of-mass energy trends in the hadron production are compared to RHIC dAu and LHC pPb data in different centrality/multiplicity classes. Here we present new results on mass hierarchy in pp and pA from light to heavy hadrons.

  6. 7 CFR 3570.93 - Regional Commission grants.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... Appalachian Regional Commission (ARC) is authorized under the Appalachian Regional Development Act of 1965 to... 7 Agriculture 15 2010-01-01 2010-01-01 false Regional Commission grants. 3570.93 Section 3570.93... AGRICULTURE COMMUNITY PROGRAMS Community Facilities Grant Program § 3570.93 Regional Commission grants. (a...

  7. 77 FR 484 - Equity and Excellence Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-05

    ... DEPARTMENT OF EDUCATION Equity and Excellence Commission AGENCY: Office for Civil Rights, U.S. Department of Education. ACTION: Notice of an open meeting. SUMMARY: This notice sets forth the schedule and proposed agenda of an up-coming meeting of the Equity and Excellence Commission (Commission). The notice...

  8. 76 FR 62394 - Equity and Excellence Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-07

    ... DEPARTMENT OF EDUCATION Equity and Excellence Commission AGENCY: Office for Civil Rights, U.S. Department of Education. ACTION: Notice of An Open Meeting. SUMMARY: This notice sets forth the schedule and proposed agenda of an up-coming meeting of the Equity and Excellence Commission (Commission). The notice...

  9. 77 FR 31605 - Equity and Excellence Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-29

    .... ADDRESSES: The Commission will meet in Washington, DC at the United States Department of Education at 400... Excellence Commission will hold an open meeting in Washington, DC at the United States Department of... DEPARTMENT OF EDUCATION Equity and Excellence Commission AGENCY: Office for Civil Rights, U.S...

  10. Detection of prostate cancer in peripheral zone: comparison of MR diffusion tensor imaging, quantitative dynamic contrast-enhanced MRI, and the two techniques combined at 3.0 T.

    PubMed

    Li, Chunmei; Chen, Min; Li, Saying; Zhao, Xuna; Zhang, Chen; Luo, Xiaojie; Zhou, Cheng

    2014-03-01

    Previous studies have shown that the diagnostic accuracy for prostate cancer improved with diffusion tensor imaging (DTI) or quantitative dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) only. However, the efficacy of combined DTI and quantitative DCE-MRI in detecting prostate cancer at 3.0 T is still indeterminate. To investigate the utility of diffusion tensor imaging (DTI), quantitative DCE-MRI, and the two techniques combined at 3.0 T in detecting prostate cancer of the peripheral zone (PZ). DTI and DCE-MRI of 33 patients was acquired prior to prostate biopsy. Regions of interest (ROIs) were drawn according to biopsy zones which were apex, mid-gland, and base on each side of the PZ. Apparent diffusion coefficient (ADC), fractional anisotropy (FA), volume transfer constant (K(trans)), and rate constant (kep) values of cancerous sextants and non-cancerous sextants in PZ were calculated. Logistic regression models were generated for DTI, DCE-MRI, and DTI + DCE-MRI. Receiver-operating characteristic (ROC) curves were used to compare the ability of these models to differentiate cancerous sextants from non-cancerous sextants of PZ. There were significant differences in the ADC, FA, K(trans), and kep values between cancerous sextants and non-cancerous sextants in PZ (P < 0.0001, P < 0.0001, P < 0.0001, and P < 0.0001, respectively). The area under curve (AUC) for DTI + DCE-MRI was significantly greater than that for either DTI (0.93 vs. 0.86, P = 0.0017) or DCE-MRI (0.93 vs. 0.84, P = 0.0034) alone. The combination of DTI and quantitative DCE-MRI has better diagnostic performance in detecting prostate cancer of the PZ than either technique alone.

  11. 29 CFR 1626.19 - Filing of Commission lawsuit.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 4 2010-07-01 2010-07-01 false Filing of Commission lawsuit. 1626.19 Section 1626.19 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.19 Filing of Commission lawsuit. The right of the Commission to file a...

  12. 29 CFR 1626.19 - Filing of Commission lawsuit.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 4 2012-07-01 2012-07-01 false Filing of Commission lawsuit. 1626.19 Section 1626.19 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.19 Filing of Commission lawsuit. The right of the Commission to file a...

  13. 29 CFR 1626.19 - Filing of Commission lawsuit.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 4 2014-07-01 2014-07-01 false Filing of Commission lawsuit. 1626.19 Section 1626.19 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.19 Filing of Commission lawsuit. The right of the Commission to file a...

  14. 29 CFR 1626.19 - Filing of Commission lawsuit.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 4 2011-07-01 2011-07-01 false Filing of Commission lawsuit. 1626.19 Section 1626.19 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES-AGE DISCRIMINATION IN EMPLOYMENT ACT § 1626.19 Filing of Commission lawsuit. The right of the Commission to file a...

  15. 45 CFR 702.12 - Contempt of the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 3 2010-10-01 2010-10-01 false Contempt of the Commission. 702.12 Section 702.12 Public Welfare Regulations Relating to Public Welfare (Continued) COMMISSION ON CIVIL RIGHTS RULES ON HEARINGS, REPORTS, AND MEETINGS OF THE COMMISSION Hearings and Reports § 702.12 Contempt of the Commission...

  16. Alaska State Commission for Human Rights

    Science.gov Websites

    Harassment Poster Filing a Complaint with the Commission Public Hearing Cases Accusations Decisions Public more... Public Hearing Cases Accusations Commission Decisions Public Hearing Summaries Case Summaries

  17. Reflections on the Gordon Commission

    ERIC Educational Resources Information Center

    Haertel, Edward

    2014-01-01

    Background:This brief reflection on the work of the Gordon Commission calls out significant themes and implications found in the various papers authored by the commissioners and other scholars, especially those included in this special issue of Teachers College Record. Purpose: The forward-looking vision of the Gordon Commission is contrasted with…

  18. 78 FR 44927 - 101st Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-25

    ... ARCTIC RESEARCH COMMISSION 101st Commission Meeting Notice is hereby given that the U.S. Arctic Research Commission will hold its 101st meeting in Unalaska, Alaska, on August 26-27, 2013. The business... and staff reports (4) Discussion and presentations concerning Arctic research activities The focus of...

  19. 7 CFR 1780.48 - Regional commission grants.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... to ARC. RUS Bulletin 1780-23 will be used to develop a separate project management agreement between... Regional commission grants. Grants are sometimes made by regional commissions for projects eligible for RUS...) When RUS has funds in the project, no charge will be made for administering regional commission funds...

  20. 7 CFR 1780.48 - Regional commission grants.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... to ARC. RUS Bulletin 1780-23 will be used to develop a separate project management agreement between... Regional commission grants. Grants are sometimes made by regional commissions for projects eligible for RUS...) When RUS has funds in the project, no charge will be made for administering regional commission funds...

  1. 7 CFR 1780.48 - Regional commission grants.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... to ARC. RUS Bulletin 1780-23 will be used to develop a separate project management agreement between... Regional commission grants. Grants are sometimes made by regional commissions for projects eligible for RUS...) When RUS has funds in the project, no charge will be made for administering regional commission funds...

  2. 7 CFR 1780.48 - Regional commission grants.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... to ARC. RUS Bulletin 1780-23 will be used to develop a separate project management agreement between... Regional commission grants. Grants are sometimes made by regional commissions for projects eligible for RUS...) When RUS has funds in the project, no charge will be made for administering regional commission funds...

  3. 47 CFR 0.401 - Location of Commission offices.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Location of Commission offices. 0.401 Section 0... Information General § 0.401 Location of Commission offices. The Commission maintains several offices and... locations. (1) The main office of the Commission is located at 445 12th Street, SW., Washington, DC 20554...

  4. Alaska Public Offices Commission, Department of Administration, State of

    Science.gov Websites

    Visiting Alaska State Employees State of Alaska Department of Administration Alaska Public Offices Commission Alaska Department of Administration, Alaska Public Offices Commission APOC Home Commission Filer ; AO's Contact Us Administration > Alaska Public Offices Commission Alaska Public Offices Commission

  5. National Commission on Excellence in Teacher Education: Commissioned Papers from the Regional Hearings. ERIC Digest.

    ERIC Educational Resources Information Center

    Butler, Catherine

    The National Commission on Excellence in Teacher Education was appointed in 1983 to describe the present state of teacher education, identify problem issues, and make recommendations for the improvement of teacher education. The final report of the Commission, "A Call for Change in Teacher Education," was based on information gathered at…

  6. 22 CFR 401.12 - Presentation to Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ....12 Foreign Relations INTERNATIONAL JOINT COMMISSION, UNITED STATES AND CANADA RULES OF PROCEDURE Applications § 401.12 Presentation to Commission. (a) Where one or the other of the Governments on its own... present to the Commission an application setting forth as fully as may be necessary for the information of...

  7. The Truman Commission's Vision of the Future

    ERIC Educational Resources Information Center

    Hutcheson, Philo A.

    2007-01-01

    Looking back over three centuries of American higher education, one can see both strengths and weaknesses in the changing attitudes toward teaching goals. In this article, the author discusses the Truman Commission's (President Harry Truman appointed the higher education commission in July 1946, and charged the commission members to examine…

  8. 25 CFR 556.5 - Report to Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... official or a key employee, the tribe shall forward to the Commission a completed application containing... primary management official or to a key employee, a tribe shall forward to the Commission an investigative... (4) The bases for those conclusions. (c) When a tribe forwards its report to the Commission, it shall...

  9. 25 CFR 556.5 - Report to Commission.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... official or a key employee, the tribe shall forward to the Commission a completed application containing... primary management official or to a key employee, a tribe shall forward to the Commission an investigative... (4) The bases for those conclusions. (c) When a tribe forwards its report to the Commission, it shall...

  10. Commission 7: Celestial Mechanics and Dynamical Astronomy

    NASA Astrophysics Data System (ADS)

    Knežević, Zoran; Morbidelli, Alessandro; Burns, Joseph A.; Athanassoula, Evangelia; Laskar, Jacques; Malhotra, Renu; Mikkola, Seppo; Peale, Stanton J.; Roig, Fernando

    2012-04-01

    At the time this report was written, Commission 7 according to the IAU database had 304 registered members. The activities of Commission 7 in the past triennium closely followed the plan outlined at the business meeting of the Commission held on August 5, 2009 in Rio de Janeiro (Transactions IAU, Volume XXVIIB, 119-120).

  11. TH-AB-201-10: Portal Dosimetry with Elekta IViewDose:Performance of the Simplified Commissioning Approach Versus Full Commissioning

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Kydonieos, M; Folgueras, A; Florescu, L

    2016-06-15

    Purpose: Elekta recently developed a solution for in-vivo EPID dosimetry (iViewDose, Elekta AB, Stockholm, Sweden) in conjunction with the Netherlands Cancer Institute (NKI). This uses a simplified commissioning approach via Template Commissioning Models (TCMs), consisting of a subset of linac-independent pre-defined parameters. This work compares the performance of iViewDose using a TCM commissioning approach with that corresponding to full commissioning. Additionally, the dose reconstruction based on the simplified commissioning approach is validated via independent dose measurements. Methods: Measurements were performed at the NKI on a VersaHD™ (Elekta AB, Stockholm, Sweden). Treatment plans were generated with Pinnacle 9.8 (Philips Medical Systems,more » Eindhoven, The Netherlands). A farmer chamber dose measurement and two EPID images were used to create a linac-specific commissioning model based on a TCM. A complete set of commissioning measurements was collected and a full commissioning model was created.The performance of iViewDose based on the two commissioning approaches was compared via a series of set-to-work tests in a slab phantom. In these tests, iViewDose reconstructs and compares EPID to TPS dose for square fields, IMRT and VMAT plans via global gamma analysis and isocentre dose difference. A clinical VMAT plan was delivered to a homogeneous Octavius 4D phantom (PTW, Freiburg, Germany). Dose was measured with the Octavius 1500 array and VeriSoft software was used for 3D dose reconstruction. EPID images were acquired. TCM-based iViewDose and 3D Octavius dose distributions were compared against the TPS. Results: For both the TCM-based and the full commissioning approaches, the pass rate, mean γ and dose difference were >97%, <0.5 and <2.5%, respectively. Equivalent gamma analysis results were obtained for iViewDose (TCM approach) and Octavius for a VMAT plan. Conclusion: iViewDose produces similar results with the simplified and full

  12. 75 FR 81592 - Blue Ribbon Commission on America's Nuclear Future

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-28

    ... DEPARTMENT OF ENERGY Blue Ribbon Commission on America's Nuclear Future AGENCY: Department of... meeting of the Blue Ribbon Commission on America's Nuclear Future (the Commission). The Commission was...: The President directed that the Blue Ribbon Commission on America's Nuclear Future (the Commission) be...

  13. Division B Commission 5: Documentation and Astronomical Data

    NASA Astrophysics Data System (ADS)

    Hanisch, Robert; Wise, Michael; Ohishi, Masatoshi; Andernach, Heinz; Bishop, Marsha; Egret, Daniel; Griffin, Elizabeth; Kembhavi, Ajit; Murphy, Tara; Pasian, Fabio; Schroeder, Anja; Tody, Douglas

    2016-04-01

    IAU Commission 5, Documentation and Astronomical Data, continued its mission of promoting and supporting sound practices of data management, data dissemination, and data preservation over the past three years. The Commission also prepared its proposal for continuation, with some changes in emphasis, after the IAU's commission restructuring program. Below we report on the activities of the various Working Groups and the one Task Force in Commission 5.

  14. Leadership of healthcare commissioning networks in England: a mixed-methods study on clinical commissioning groups

    PubMed Central

    Zachariadis, Markos; Oborn, Eivor; Barrett, Michael; Zollinger-Read, Paul

    2013-01-01

    Objective To explore the relational challenges for general practitioner (GP) leaders setting up new network-centric commissioning organisations in the recent health policy reform in England, we use innovation network theory to identify key network leadership practices that facilitate healthcare innovation. Design Mixed-method, multisite and case study research. Setting Six clinical commissioning groups and local clusters in the East of England area, covering in total 208 GPs and 1 662 000 population. Methods Semistructured interviews with 56 lead GPs, practice managers and staff from the local health authorities (primary care trusts, PCT) as well as various healthcare professionals; 21 observations of clinical commissioning group (CCG) board and executive meetings; electronic survey of 58 CCG board members (these included GPs, practice managers, PCT employees, nurses and patient representatives) and subsequent social network analysis. Main outcome measures Collaborative relationships between CCG board members and stakeholders from their healthcare network; clarifying the role of GPs as network leaders; strengths and areas for development of CCGs. Results Drawing upon innovation network theory provides unique insights of the CCG leaders’ activities in establishing best practices and introducing new clinical pathways. In this context we identified three network leadership roles: managing knowledge flows, managing network coherence and managing network stability. Knowledge sharing and effective collaboration among GPs enable network stability and the alignment of CCG objectives with those of the wider health system (network coherence). Even though activities varied between commissioning groups, collaborative initiatives were common. However, there was significant variation among CCGs around the level of engagement with providers, patients and local authorities. Locality (sub) groups played an important role because they linked commissioning decisions with

  15. 47 CFR 0.416 - The Federal Communications Commission Record.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false The Federal Communications Commission Record. 0.416 Section 0.416 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL COMMISSION ORGANIZATION General Information Printed Publications § 0.416 The Federal Communications Commission Record. Texts...

  16. Commissioning MMS: Challenges and Lessons Learned

    NASA Technical Reports Server (NTRS)

    Wood, Paul; Gramling, Cheryl; Reiter, Jennifer; Smith, Patrick; Stone, John

    2016-01-01

    This paper discusses commissioning of NASA's Magnetospheric MultiScale (MMS) Mission. The mission includes four identical spacecraft with a large, complex set of instrumentation. The planning for and execution of commissioning for this mission is described. The paper concludes by discussing lessons learned.

  17. 75 FR 81244 - Military Leadership Diversity Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-27

    ... DEPARTMENT OF DEFENSE Office of the Secretary Military Leadership Diversity Commission Meeting... will take place: 1. Name of Committee: Military Leadership Diversity Commission (MLDC). 2. Date... Military Leadership Diversity Commission to continue their efforts to address congressional concerns as...

  18. Commissioning Results on the JWST Testbed Telescope

    NASA Technical Reports Server (NTRS)

    Dean, Bruce H.; Acton, D. Scott

    2006-01-01

    The one-meter 18 segment JWST Testbed Telescope (TBT) has been developed at Ball Aerospace to facilitate commissioning operations for the JWST Observatory. Eight different commissioning activities were tested on the TBT: telescope focus sweep, segment ID and Search, image array, global alignment, image stacking, coarse phasing, fine phasing, and multi-field phasing. This paper describes recent commissioning results from experiments performed on the TBT.

  19. 75 FR 25259 - National Health Care Workforce Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-07

    ... GOVERNMENT ACCOUNTABILITY OFFICE National Health Care Workforce Commission AGENCY: Government... members to the National Health Care Workforce Commission, with appointments to be made not later [email protected] . Mail: GAO Health Care, Attention: National Health Care Workforce Commission Nominations, 441...

  20. Lattice QCD Thermodynamics and RHIC-BES Particle Production within Generic Nonextensive Statistics

    NASA Astrophysics Data System (ADS)

    Tawfik, Abdel Nasser

    2018-05-01

    The current status of implementing Tsallis (nonextensive) statistics on high-energy physics is briefly reviewed. The remarkably low freezeout-temperature, which apparently fails to reproduce the firstprinciple lattice QCD thermodynamics and the measured particle ratios, etc. is discussed. The present work suggests a novel interpretation for the so-called " Tsallis-temperature". It is proposed that the low Tsallis-temperature is due to incomplete implementation of Tsallis algebra though exponential and logarithmic functions to the high-energy particle-production. Substituting Tsallis algebra into grand-canonical partition-function of the hadron resonance gas model seems not assuring full incorporation of nonextensivity or correlations in that model. The statistics describing the phase-space volume, the number of states and the possible changes in the elementary cells should be rather modified due to interacting correlated subsystems, of which the phase-space is consisting. Alternatively, two asymptotic properties, each is associated with a scaling function, are utilized to classify a generalized entropy for such a system with large ensemble (produced particles) and strong correlations. Both scaling exponents define equivalence classes for all interacting and noninteracting systems and unambiguously characterize any statistical system in its thermodynamic limit. We conclude that the nature of lattice QCD simulations is apparently extensive and accordingly the Boltzmann-Gibbs statistics is fully fulfilled. Furthermore, we found that the ratios of various particle yields at extreme high and extreme low energies of RHIC-BES is likely nonextensive but not necessarily of Tsallis type.

  1. 29 CFR 1603.304 - Commission decision.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 4 2010-07-01 2010-07-01 false Commission decision. 1603.304 Section 1603.304 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR PREVIOUSLY EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF...

  2. 29 CFR 1603.304 - Commission decision.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 4 2012-07-01 2012-07-01 false Commission decision. 1603.304 Section 1603.304 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR PREVIOUSLY EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF...

  3. 29 CFR 1603.304 - Commission decision.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 4 2013-07-01 2013-07-01 false Commission decision. 1603.304 Section 1603.304 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR PREVIOUSLY EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF...

  4. 29 CFR 1603.304 - Commission decision.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 4 2014-07-01 2014-07-01 false Commission decision. 1603.304 Section 1603.304 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR PREVIOUSLY EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF...

  5. 29 CFR 1603.304 - Commission decision.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 4 2011-07-01 2011-07-01 false Commission decision. 1603.304 Section 1603.304 Labor Regulations Relating to Labor (Continued) EQUAL EMPLOYMENT OPPORTUNITY COMMISSION PROCEDURES FOR PREVIOUSLY EXEMPT STATE AND LOCAL GOVERNMENT EMPLOYEE COMPLAINTS OF EMPLOYMENT DISCRIMINATION UNDER SECTION 304 OF...

  6. 29 CFR 2204.309 - Commission review.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Regulations Relating to Labor (Continued) OCCUPATIONAL SAFETY AND HEALTH REVIEW COMMISSION IMPLEMENTATION OF THE EQUAL ACCESS TO JUSTICE ACT IN PROCEEDINGS BEFORE THE OCCUPATIONAL SAFETY AND HEALTH REVIEW... is directed, the Commission shall issue a final decision on the application or remand the application...

  7. 17 CFR 200.10 - The Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 2 2010-04-01 2010-04-01 false The Commission. 200.10 Section 200.10 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION ORGANIZATION; CONDUCT AND ETHICS; AND INFORMATION AND REQUESTS Organization and Program Management General Organization § 200.10...

  8. 17 CFR 200.10 - The Commission.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 17 Commodity and Securities Exchanges 2 2013-04-01 2013-04-01 false The Commission. 200.10 Section 200.10 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION ORGANIZATION; CONDUCT AND ETHICS; AND INFORMATION AND REQUESTS Organization and Program Management General Organization § 200.10...

  9. 17 CFR 200.10 - The Commission.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 17 Commodity and Securities Exchanges 2 2011-04-01 2011-04-01 false The Commission. 200.10 Section 200.10 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION ORGANIZATION; CONDUCT AND ETHICS; AND INFORMATION AND REQUESTS Organization and Program Management General Organization § 200.10...

  10. 78 FR 21060 - Appeal Proceedings Before the Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-09

    ... adoption of alternate standards from those required by the Commission's minimum internal control standards... adoption of alternate standards from those required by the Commission's minimum internal control standards... TGRAs' adoption of alternate standards from those required by the Commission's minimum internal control...

  11. 77 FR 8257 - Sunshine Act Open Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-14

    ... FEDERAL COMMUNICATIONS COMMISSION Sunshine Act Open Commission Meeting Date: February 8, 2012. The Federal Communications Commission will hold an Open Meeting on the subjects listed below on Wednesday... accessible to people using wheelchairs or other mobility aids. Sign language interpreters, open captioning...

  12. How are clinical commissioning groups managing conflicts of interest under primary care co-commissioning in England? A qualitative analysis

    PubMed Central

    Moran, Valerie; Allen, Pauline; Checkland, Kath; Warwick-Giles, Lynsey; Gore, Oz; Bramwell, Donna; Coleman, Anna

    2017-01-01

    Objectives From April 2015, NHS England (NHSE) started to devolve responsibility for commissioning primary care services to clinical commissioning groups (CCGs). The aim of this paper is to explore how CCGs are managing potential conflicts of interest associated with groups of GPs commissioning themselves or their practices to provide services. Design We carried out two telephone surveys using a sample of CCGs. We also used a qualitative case study approach and collected data using interviews and meeting observations in four sites (CCGs). Setting/participants We conducted 57 telephone interviews and 42 face-to-face interviews with general practitioners (GPs) and CCG staff involved in primary care co-commissioning and observed 74 meetings of CCG committees responsible for primary care co-commissioning. Results Conflicts of interest were seen as an inevitable consequence of CCGs commissioning primary care. Particular problems arose with obtaining unbiased clinical input for new incentive schemes and providing support to GP provider federations. Participants in meetings concerning primary care co-commissioning declared conflicts of interest at the outset of meetings. Different approaches were pursued regarding GPs involvement in subsequent discussions and decisions with inconsistency in the exclusion of GPs from meetings. CCG senior management felt confident that the new governance structures and policies dealt adequately with conflicts of interest, but we found these arrangements face limitations. While the revised NHSE statutory guidance on managing conflicts of interest (2016) was seen as an improvement on the original (2014), there still remained some confusion over various terms and concepts contained therein. Conclusions Devolving responsibility for primary care co-commissioning to CCGs created a structural conflict of interest. The NHSE statutory guidance should be refined and clarified so that CCGs can properly manage conflicts of interest. Non

  13. How are clinical commissioning groups managing conflicts of interest under primary care co-commissioning in England? A qualitative analysis.

    PubMed

    Moran, Valerie; Allen, Pauline; McDermott, Imelda; Checkland, Kath; Warwick-Giles, Lynsey; Gore, Oz; Bramwell, Donna; Coleman, Anna

    2017-11-08

    From April 2015, NHS England (NHSE) started to devolve responsibility for commissioning primary care services to clinical commissioning groups (CCGs). The aim of this paper is to explore how CCGs are managing potential conflicts of interest associated with groups of GPs commissioning themselves or their practices to provide services. We carried out two telephone surveys using a sample of CCGs. We also used a qualitative case study approach and collected data using interviews and meeting observations in four sites (CCGs). We conducted 57 telephone interviews and 42 face-to-face interviews with general practitioners (GPs) and CCG staff involved in primary care co-commissioning and observed 74 meetings of CCG committees responsible for primary care co-commissioning. Conflicts of interest were seen as an inevitable consequence of CCGs commissioning primary care. Particular problems arose with obtaining unbiased clinical input for new incentive schemes and providing support to GP provider federations. Participants in meetings concerning primary care co-commissioning declared conflicts of interest at the outset of meetings. Different approaches were pursued regarding GPs involvement in subsequent discussions and decisions with inconsistency in the exclusion of GPs from meetings. CCG senior management felt confident that the new governance structures and policies dealt adequately with conflicts of interest, but we found these arrangements face limitations. While the revised NHSE statutory guidance on managing conflicts of interest (2016) was seen as an improvement on the original (2014), there still remained some confusion over various terms and concepts contained therein. Devolving responsibility for primary care co-commissioning to CCGs created a structural conflict of interest. The NHSE statutory guidance should be refined and clarified so that CCGs can properly manage conflicts of interest. Non-clinician members of committees involved in commissioning primary care

  14. 77 FR 37836 - Petition Requesting Commission Action Regarding Crib Bumpers

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-25

    ... CONSUMER PRODUCT SAFETY COMMISSION 16 CFR Chapter II [Docket No. CPSC-2012-0034] Petition Requesting Commission Action Regarding Crib Bumpers AGENCY: U.S. Consumer Product Safety Commission. ACTION: Petition for rulemaking. SUMMARY: The U.S. Consumer Product Safety Commission (``Commission'') has received...

  15. 76 FR 1607 - Blue Ribbon Commission on America's Nuclear Future

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-11

    ... DEPARTMENT OF ENERGY Blue Ribbon Commission on America's Nuclear Future AGENCY: Department of... meeting of the Blue Ribbon Commission on America's Nuclear Future (the Commission). The Commission was...: Background: The President directed that the Blue Ribbon Commission on America's Nuclear Future (the...

  16. 16 CFR 2.2 - Request for Commission action.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 16 Commercial Practices 1 2012-01-01 2012-01-01 false Request for Commission action. 2.2 Section 2.2 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE NONADJUDICATIVE PROCEDURES Inquiries; Investigations; Compulsory Processes § 2.2 Request for Commission action. (a...

  17. 16 CFR 2.2 - Request for Commission action.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Request for Commission action. 2.2 Section 2.2 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE NONADJUDICATIVE PROCEDURES Inquiries; Investigations; Compulsory Processes § 2.2 Request for Commission action. (a...

  18. 16 CFR 2.2 - Request for Commission action.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 16 Commercial Practices 1 2011-01-01 2011-01-01 false Request for Commission action. 2.2 Section 2.2 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE NONADJUDICATIVE PROCEDURES Inquiries; Investigations; Compulsory Processes § 2.2 Request for Commission action. (a...

  19. 16 CFR 1061.12 - Commission consideration on merits.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Commission consideration on merits. 1061.12 Section 1061.12 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL APPLICATIONS FOR EXEMPTION... available and relevant information on the proposal. (c) The Commission's evaluation will focus on: (1...

  20. 17 CFR 171.28 - Participation by Commission staff.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... staff. 171.28 Section 171.28 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION... Disciplinary, Membership Denial and Registration Actions § 171.28 Participation by Commission staff. The... establish a supplementary briefing schedule for the Commission staff and other parties to the proceeding. If...

  1. 77 FR 8095 - Technical Corrections to Commission Regulations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-14

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission 18 CFR Part 2 [Docket No. RM11-30-000; Order No. 756] Technical Corrections to Commission Regulations Issued February 8, 2012. AGENCY: Federal Energy Regulatory Commission, DOE. ACTION: Final rule: correcting amendment. SUMMARY: This document adds...

  2. 18 CFR 388.104 - Informal advice from Commission staff.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Commission staff. 388.104 Section 388.104 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... Commission staff. (a) The Commission staff provides informal advice and assistance to the general public and... expressed by the staff do not represent the official views of the Commission, but are designed to aid the...

  3. 18 CFR 388.104 - Informal advice from Commission staff.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Commission staff. 388.104 Section 388.104 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... Commission staff. (a) The Commission staff provides informal advice and assistance to the general public and... expressed by the staff do not represent the official views of the Commission, but are designed to aid the...

  4. 18 CFR 388.104 - Informal advice from Commission staff.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... Commission staff. 388.104 Section 388.104 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... Commission staff. (a) The Commission staff provides informal advice and assistance to the general public and... expressed by the staff do not represent the official views of the Commission, but are designed to aid the...

  5. 18 CFR 388.104 - Informal advice from Commission staff.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Commission staff. 388.104 Section 388.104 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... Commission staff. (a) The Commission staff provides informal advice and assistance to the general public and... expressed by the staff do not represent the official views of the Commission, but are designed to aid the...

  6. 18 CFR 388.104 - Informal advice from Commission staff.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Commission staff. 388.104 Section 388.104 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... Commission staff. (a) The Commission staff provides informal advice and assistance to the general public and... expressed by the staff do not represent the official views of the Commission, but are designed to aid the...

  7. 47 CFR 1.108 - Reconsideration on Commission's own motion.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Commission's own motion. The Commission may, on its own motion, set aside any action made or taken by it... 47 Telecommunication 1 2010-10-01 2010-10-01 false Reconsideration on Commission's own motion. 1... General Rules of Practice and Procedure Reconsideration and Review of Actions Taken by the Commission and...

  8. Periodontal status in university students.

    PubMed

    Murtomaa, H; Meurman, J H; Rytömaa, I; Turtola, L

    1987-09-01

    The periodontal status of 217 5th-year students (aged 25-26 years and born in Helsinki) at the University of Helsinki was assessed. The students had been eligible for community-based dental care free of charge until the age of 18 years, after which they could obtain low-cost dental care from the Helsinki Student Health Service. Their periodontal status was determined according the community periodontal index of treatment needs; gingival retraction was recorded when 1 mm or more of the cementum was exposed. Code 0 sextant was found for 67% of the women and 57% of the men. 20% of the students examined had sextant scoring of code 3; no-one had code 4 sextants. 69% of the women and 49% of the men had gingival retraction, in average 1.5 +/- 0.5 mm. No correlation was found between the frequency of toothbrushing or the hand used for brushing and the number of retractions, nor did the number of healthy sextants correlate with the frequency of retractions. The findings emphasize the importance of better guidance regarding qualitative aspects of oral hygiene at home.

  9. North American Commission on Stratigraphic Nomenclature Note 66: records of Stratigraphic Commission, 2003-2013

    USGS Publications Warehouse

    Easton, Robert M.; Catuneanu, Octavian; Donovan, Art D.; Fluegeman, Richard H.; Hamblin, A.P.; Harper, Howard; Lasca, Norman P.; Morrow, Jared R.; Orndorff, Randall C.; Sadler, Peter; Scott, Robert W.; Tew, Berry H.

    2014-01-01

    Note 66 summarizes activities of the North American Commission on Stratigraphic Nomenclature (NACSN) from November 2003 to October 2013 and is condensed from the minutes of the NACSN’s 58th to 68th annual meetings1. The purposes of the Commission are to develop statements of stratigraphic principles,recommend procedures applicable to the classification and nomenclature of stratigraphic and related units, review problems in classifying and naming stratigraphic and related units, and formulate expressions of judgment on these matters.

  10. 77 FR 15089 - Equity and Excellence Commission Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-14

    .... ADDRESSES: The Commission will meet in Washington, DC at the United States Department of Education at 400... Excellence Commission will hold an open meeting in Washington, DC at the United States Department of... DEPARTMENT OF EDUCATION Equity and Excellence Commission Meeting AGENCY: Office for Civil Rights...

  11. Arizona Commission of Indian Affairs 1986-87 Annual Report.

    ERIC Educational Resources Information Center

    Arizona Commission of Indian Affairs, Phoenix.

    This annual report includes a list of commission membership and staff; a map of state Indian reservations; a table of reservation acreages and populations; a list of commission meetings and those in attendance; a list of 1986-87 commission publications and an agency financial report. A section of "commission highlights" summarizes nine…

  12. 78 FR 14527 - Commission Information Collection Activities; Comment Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-06

    ... municipality authorized to engage in the local distribution of natural gas, the Commission may order a natural... authorized to engage in the local distribution of natural gas. Estimate of Annual Burden: \\2\\ The Commission... Commission as explained below. The Commission issued a Notice in the Federal Register (77 FR 75627, 12/21...

  13. 47 CFR 1.108 - Reconsideration on Commission's own motion.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Commission's own motion. The Commission may, on its own motion, reconsider any action made or taken by it... acting on its own motion under this section, the Commission may take any action it could take in acting... 47 Telecommunication 1 2011-10-01 2011-10-01 false Reconsideration on Commission's own motion. 1...

  14. Appalachian Regional Commission Annual Report, 2001.

    ERIC Educational Resources Information Center

    Appalachian Regional Commission, Washington, DC.

    In fiscal year 2001, the Appalachian Regional Commission invested $63.6 million in 469 economic and human development (nonhighway) projects and $389.6 million in highway projects in Appalachia. The Commission launched a new initiative to promote the development of telecommunications infrastructure, especially in distressed counties. The Commission…

  15. 29 CFR 2704.308 - Commission review.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 9 2011-07-01 2011-07-01 false Commission review. 2704.308 Section 2704.308 Labor Regulations Relating to Labor (Continued) FEDERAL MINE SAFETY AND HEALTH REVIEW COMMISSION IMPLEMENTATION OF... for novel questions of law or policy, however. (c) If review of the initial decision of the...

  16. 29 CFR 2704.308 - Commission review.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 9 2010-07-01 2010-07-01 false Commission review. 2704.308 Section 2704.308 Labor Regulations Relating to Labor (Continued) FEDERAL MINE SAFETY AND HEALTH REVIEW COMMISSION IMPLEMENTATION OF... for novel questions of law or policy, however. (c) If review of the initial decision of the...

  17. Large Hadron Collider commissioning and first operation.

    PubMed

    Myers, S

    2012-02-28

    A history of the commissioning and the very successful early operation of the Large Hadron Collider (LHC) is described. The accident that interrupted the first commissioning, its repair and the enhanced protection system put in place are fully described. The LHC beam commissioning and operational performance are reviewed for the period from 2010 to mid-2011. Preliminary plans for operation and future upgrades for the LHC are given for the short and medium term.

  18. Wisconsin SRF Electron Gun Commissioning

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Bisognano, Joseph J.; Bissen, M.; Bosch, R.

    The University of Wisconsin has completed fabrication and commissioning of a low frequency (199.6 MHz) superconducting electron gun based on a quarter wave resonator (QWR) cavity. Its concept was optimized to be the source for a CW free electron laser facility. The gun design includes active tuning and a high temperature superconducting solenoid. We will report on the status of the Wisconsin SRF electron gun program, including commissioning experience and first beam measurements.

  19. 17 CFR 200.41 - Quorum of the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 2 2010-04-01 2010-04-01 false Quorum of the Commission. 200.41 Section 200.41 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION ORGANIZATION; CONDUCT AND ETHICS; AND INFORMATION AND REQUESTS Disposition of Commission Business § 200.41 Quorum of the...

  20. 32 CFR 9.2 - Establishment of Military Commissions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Establishment of Military Commissions. 9.2 Section 9.2 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE MILITARY COMMISSIONS PROCEDURES FOR TRIALS BY MILITARY COMMISSIONS OF CERTAIN NON-UNITED STATES CITIZENS IN THE WAR AGAINST...

  1. 17 CFR 9.26 - Participation of Commission staff.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 17 Commodity and Securities Exchanges 1 2014-04-01 2014-04-01 false Participation of Commission staff. 9.26 Section 9.26 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES... Respect to Appeals § 9.26 Participation of Commission staff. Within twenty days after receipt of the...

  2. 17 CFR 9.26 - Participation of Commission staff.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 17 Commodity and Securities Exchanges 1 2012-04-01 2012-04-01 false Participation of Commission staff. 9.26 Section 9.26 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES... Respect to Appeals § 9.26 Participation of Commission staff. Within twenty days after receipt of the...

  3. 17 CFR 9.26 - Participation of Commission staff.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Participation of Commission staff. 9.26 Section 9.26 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES... Respect to Appeals § 9.26 Participation of Commission staff. Within twenty days after receipt of the...

  4. 17 CFR 9.26 - Participation of Commission staff.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 17 Commodity and Securities Exchanges 1 2011-04-01 2011-04-01 false Participation of Commission staff. 9.26 Section 9.26 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES... Respect to Appeals § 9.26 Participation of Commission staff. Within twenty days after receipt of the...

  5. 17 CFR 9.26 - Participation of Commission staff.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 17 Commodity and Securities Exchanges 1 2013-04-01 2013-04-01 false Participation of Commission staff. 9.26 Section 9.26 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES... Respect to Appeals § 9.26 Participation of Commission staff. Within twenty days after receipt of the...

  6. The Civil Rights Commission Must Persist

    ERIC Educational Resources Information Center

    Reynolds, Gerald A.

    2007-01-01

    Columnist George Will and others have questioned the continuing need for a federal civil rights commission, because civil rights protections have been on the books since 1964. The chairman of the Commission, Gerald Reynolds, here responds that practitioners of critical legal theory, advocates of the Akaka-Secession bill, some proponents of…

  7. [The transparency commission: evaluation and re-evaluation].

    PubMed

    Bergmann, J F

    The purpose of the French Transparency Commission is to provide scientific advice concerning the usefulness, interest and good use of drugs. The work of the Transparency Commission lies at the interface between the French or European marketing approval procedures and the health and economic prerequisites of the French community. The opinion of the French Transparency Commission is used to assess the medical service provided by a new drug and the improvement of this medical service subsequent to its use. This opinion is taken into consideration for establishing the reimbursement rate applied by the social security organizations and the selling price set by the administration. The expert opinions and recommendations established by the Transparency Commission participate in implementing good use of drugs.

  8. 39 CFR 3002.10 - The Commission and its offices.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 39 Postal Service 1 2010-07-01 2010-07-01 false The Commission and its offices. 3002.10 Section 3002.10 Postal Service POSTAL REGULATORY COMMISSION PERSONNEL ORGANIZATION § 3002.10 The Commission and its offices. (a) The Commissioners. The Postal Regulatory Commission is an independent establishment of the executive branch of the U.S. Government...

  9. Engaging GPs in commissioning: realist evaluation of the early experiences of Clinical Commissioning Groups in the English NHS.

    PubMed

    McDermott, Imelda; Checkland, Kath; Coleman, Anna; Osipovič, Dorota; Petsoulas, Christina; Perkins, Neil

    2017-01-01

    Objectives To explore the 'added value' that general practitioners (GPs) bring to commissioning in the English NHS. We describe the experience of Clinical Commissioning Groups (CCGs) in the context of previous clinically led commissioning policy initiatives. Methods Realist evaluation. We identified the programme theories underlying the claims made about GP 'added value' in commissioning from interviews with key informants. We tested these theories against observational data from four case study sites to explore whether and how these claims were borne out in practice. Results The complexity of CCG structures means CCGs are quite different from one another with different distributions of responsibilities between the various committees. This makes it difficult to compare CCGs with one another. Greater GP involvement was important but it was not clear where and how GPs could add most value. We identified some of the mechanisms and conditions which enable CCGs to maximize the 'added value' that GPs bring to commissioning. Conclusion To maximize the value of clinical input, CCGs need to invest time and effort in preparing those involved, ensuring that they systematically gather evidence about service gaps and problems from their members, and engaging members in debate about the future shape of services.

  10. Views of NHS commissioners on commissioning support provision. Evidence from a qualitative study examining the early development of clinical commissioning groups in England

    PubMed Central

    Petsoulas, Christina; Allen, Pauline; Checkland, Kath; Coleman, Anna; Segar, Julia; Peckham, Stephen; Mcdermott, Imelda

    2014-01-01

    Objective The 2010 healthcare reform in England introduced primary care-led commissioning in the National Health Service (NHS) by establishing clinical commissioning groups (CCGs). A key factor for the success of the reform is the provision of excellent commissioning support services to CCGs. The Government's aim is to create a vibrant market of competing providers of such services (from both for-profit and not-for-profit sectors). Until this market develops, however, commissioning support units (CSUs) have been created from which CCGs are buying commissioning support functions. This study explored the attitudes of CCGs towards outsourcing commissioning support functions during the initial stage of the reform. Design The research took place between September 2011 and June 2012. We used a case study research design in eight CCGs, conducting in-depth interviews, observation of meetings and analysis of policy documents. Setting/participants We conducted 96 interviews and observed 146 meetings (a total of approximately 439 h). Results Many CCGs were reluctant to outsource core commissioning support functions (such as contracting) for fear of losing local knowledge and trusted relationships. Others were disappointed by the absence of choice and saw CSUs as monopolies and a recreation of the abolished PCTs. Many expressed doubts about the expectation that outsourcing of commissioning support functions will result in lower administrative costs. Conclusions Given the nature of healthcare commissioning, outsourcing vital commissioning support functions may not be the preferred option of CCGs. Considerations of high transaction costs, and the risk of fragmentation of services and loss of trusted relationships involved in short-term contracting, may lead most CCGs to decide to form long-term partnerships with commissioning support suppliers in the future. This option, however, limits competition by creating ‘network closure’ and calls into question the Government

  11. DESCANT - Testing and Commissioning

    NASA Astrophysics Data System (ADS)

    Bildstein, Vinzenz; Garrett, P. E.; Bandyopadhay, D.; Bangay, J.; Bianco, L.; Demand, G.; Hadinia, B.; Leach, K. G.; Sumithrarachchi, C.; Turko, J.; Wong, J.; Ashley, S. F.; Crider, B. P.; McEllistrem, M. T.; Peters, E. E.; Prados-Estévez, F. M.; Yates, S. W.; Vanhoy, J. R.; Ball, G. C.; Bishop, D. P.; Garnsworthy, A. B.; Hackman, G.; Pearson, C. J.; Shaw, B.; Sarazin, F.

    2017-09-01

    The DESCANT array at TRIUMF is designed to detect neutrons from RIB experiments. DESCANT is composed of 70 close-packed deuterated organic liquid scintillators coupled to digital fast read-out ADC modules. This configuration permits online pulse-shape discrimination between neutron and γ-ray events. A prototype detector was tested with monoenergetic neutrons at the University of Kentucky Accelerator Laboratory. The data from these tests was compared to Geant4 simulations. A first commissioning experiment of the full array, using the decay of Cs 145 - 146 , was performed in August 2016. The results of the tests and a preliminary analysis of the commissioning experiment will be presented.

  12. 45 CFR 2101.11 - Secretary to the Commission.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 4 2011-10-01 2011-10-01 false Secretary to the Commission. 2101.11 Section 2101... FUNCTIONS AND ORGANIZATION General Organization § 2101.11 Secretary to the Commission. Subject to the direction of the Chairman, the Secretary to the Commission is responsible for the day-to-day operations of...

  13. 45 CFR 2101.11 - Secretary to the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false Secretary to the Commission. 2101.11 Section 2101... FUNCTIONS AND ORGANIZATION General Organization § 2101.11 Secretary to the Commission. Subject to the direction of the Chairman, the Secretary to the Commission is responsible for the day-to-day operations of...

  14. Commissioning for the European XFEL facility

    NASA Astrophysics Data System (ADS)

    Nölle, D.

    2017-06-01

    The European XFEL is a 4th generation light source based on the Self Amplified Spontaneous Emission (SASE) FreeElectron-Laser concept. It is currently being commissioned in North- Germany. The core installation is a 17.5 GeV superconducting accelerator driving 3 SASE lines with photon energies from 1 to beyond 20 keV range with a maximum of 27.000 pulses per second. The international facility is organized as a limited liability company with shareholders from the contributing countries. DESY has taken over the leadership of the accelerator construction consortium, and will be in charge of the operation of the accelerator complex. The facility was set up with contributions from the 11 shareholder countries, either being hardware systems and/or staff or cash contributions. The construction is almost complete, and the commissioning phase has started by the end of 2015. This contribution will report the status of the accelerator complex with emphasis on the commissioning of the accelerator and an outlook to the commissioning of the SASE 1 FEL line.

  15. Commission 25: Stellar Photometry and Polarimetry

    NASA Astrophysics Data System (ADS)

    Martinez, Peter; Milone, Eugene; Landolt, Arlo; Jordi, Carme; Mironov, Aleksey; Shenbang, Qian; Schmidt, Edward; Sterken, Christiaan

    2010-05-01

    The Business Meeting for Commission 25 was held on the 6th of August 2009. The meeting was chaired by Dr Eugene Milone, Vice President for the 2006-2009 triennium, and incoming President for the 2009-2011 triennium. Dr Milone presented an apology from the President of the Commission, Dr Peter Martinez, who was unable to attend the meeting.

  16. 18 CFR 35.31 - Commission review.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... determine whether the ASC set by BPA for the applicable exchange period was determined in accordance with... Commission will order that BPA amend the ASC to conform with the methodology. If the ASC is in accord with... by the Commission will be at the rate charged to BPA by the U.S. Treasury during that period, unless...

  17. 18 CFR 35.31 - Commission review.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... determine whether the ASC set by BPA for the applicable exchange period was determined in accordance with... Commission will order that BPA amend the ASC to conform with the methodology. If the ASC is in accord with... by the Commission will be at the rate charged to BPA by the U.S. Treasury during that period, unless...

  18. 18 CFR 35.31 - Commission review.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... determine whether the ASC set by BPA for the applicable exchange period was determined in accordance with... Commission will order that BPA amend the ASC to conform with the methodology. If the ASC is in accord with... by the Commission will be at the rate charged to BPA by the U.S. Treasury during that period, unless...

  19. 18 CFR 35.31 - Commission review.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... determine whether the ASC set by BPA for the applicable exchange period was determined in accordance with... Commission will order that BPA amend the ASC to conform with the methodology. If the ASC is in accord with... by the Commission will be at the rate charged to BPA by the U.S. Treasury during that period, unless...

  20. 18 CFR 35.31 - Commission review.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... determine whether the ASC set by BPA for the applicable exchange period was determined in accordance with... Commission will order that BPA amend the ASC to conform with the methodology. If the ASC is in accord with... by the Commission will be at the rate charged to BPA by the U.S. Treasury during that period, unless...

  1. CCRIS: Carnegie Commission Reports Information System.

    ERIC Educational Resources Information Center

    Lavin, Mary Jo

    The Carnegie Commission Reports Information System (CCRIS) attempts to make the findings of the 22 Commission reports (published by McGraw Hill Book Company) more readily available to the academic community. CCRIS consists of an explanatory text of 16 pages introducing the reader to a set of 1500 edge-notched McBee cards. Each card contains a…

  2. Commission 41: History of Astronomy

    NASA Astrophysics Data System (ADS)

    Ruggles, Clive; Kochhar, Rajesh; Il-Seong, Nha; Belmonte, Juan; Corbin, Brenda; de Jong, Teije; Norris, Ray; Pigatto, Luisa; Soma, Mitsuru; Sterken, Chris; Xiaochun, Sun

    2012-04-01

    Commission 41 was created at the VIIth IAU General Assembly in Zürich in 1948. From an inauspicious start-Otto Neugebauer was appointed the first President in his absence, but proceeded to express his conviction that ``an international organization in the history of astronomy has no positive function. . .my only activity during my term of service consisted in iterated attempts to resign''-the Commission quickly assumed a key role in the international development of the history of astronomy as an academic discipline.

  3. Blue Ribbon Commission Tour of Hanford Site

    ScienceCinema

    Paul Saueressig

    2017-12-09

    The Blue Ribbon Commission on America's Nuclear Future toured the Department of Energy's Hanford Site on July 14, 2010. Commission members, invited guests, and members of the public visited facilities that store high-level, radioactive waste.

  4. Budget Perspectives and Proposed Commission Recommendations. Commission Report 08-04

    ERIC Educational Resources Information Center

    California Postsecondary Education Commission, 2008

    2008-01-01

    The 2008-09 budget proposed by the Governor reduces funding for higher education by $1.1 billion, from a figure based on planned enrollment growth and other workload and eligibility factors. The California Postsecondary Education Commission is concerned that funding reductions could result in long-term damage to California's postsecondary…

  5. 22 CFR 401.26 - Presentation to Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Canada is to be referred to the Commission under Article IX of the Treaty, the method of brining such question or matter to the attention of the Commission and invoking its action ordinarily will be as set...

  6. Engaging GPs in commissioning: realist evaluation of the early experiences of Clinical Commissioning Groups in the English NHS

    PubMed Central

    Checkland, Kath; Coleman, Anna; Osipovič, Dorota; Petsoulas, Christina; Perkins, Neil

    2016-01-01

    Objectives To explore the ‘added value’ that general practitioners (GPs) bring to commissioning in the English NHS. We describe the experience of Clinical Commissioning Groups (CCGs) in the context of previous clinically led commissioning policy initiatives. Methods Realist evaluation. We identified the programme theories underlying the claims made about GP ‘added value’ in commissioning from interviews with key informants. We tested these theories against observational data from four case study sites to explore whether and how these claims were borne out in practice. Results The complexity of CCG structures means CCGs are quite different from one another with different distributions of responsibilities between the various committees. This makes it difficult to compare CCGs with one another. Greater GP involvement was important but it was not clear where and how GPs could add most value. We identified some of the mechanisms and conditions which enable CCGs to maximize the ‘added value’ that GPs bring to commissioning. Conclusion To maximize the value of clinical input, CCGs need to invest time and effort in preparing those involved, ensuring that they systematically gather evidence about service gaps and problems from their members, and engaging members in debate about the future shape of services. PMID:27151153

  7. C46 `ASTRONOMY Education and Development': a Peculiar Commission

    NASA Astrophysics Data System (ADS)

    de Greve, Jean-Pierre; García, Beatriz; Gerbaldi, Michèle; Ferlet, Roger; Guinan, Edward; Hearnshaw, John; Jones, Barrie; Marschall, Laurence; Miley, George; Pasachoff, Jay; Ros, Rosa; Stavinschi, Magda; Torres-Peimbert, Silvia

    2016-04-01

    C46 was a Commission of the Executive Committee of the IAU under Division XII (Union-Wide Activities), then after 2012 under Division C (Education, Outreach, and Heritage). It was the only commission dealing exclusively with astronomy education; a previous Commission 38 (Exchange of Astronomers), which allocated travel grants to astronomers who needed them, and a Working Group on the Worldwide Development of Astronomy, have been absorbed by Commission 46.

  8. Views of NHS commissioners on commissioning support provision. Evidence from a qualitative study examining the early development of clinical commissioning groups in England.

    PubMed

    Petsoulas, Christina; Allen, Pauline; Checkland, Kath; Coleman, Anna; Segar, Julia; Peckham, Stephen; Mcdermott, Imelda

    2014-10-15

    The 2010 healthcare reform in England introduced primary care-led commissioning in the National Health Service (NHS) by establishing clinical commissioning groups (CCGs). A key factor for the success of the reform is the provision of excellent commissioning support services to CCGs. The Government's aim is to create a vibrant market of competing providers of such services (from both for-profit and not-for-profit sectors). Until this market develops, however, commissioning support units (CSUs) have been created from which CCGs are buying commissioning support functions. This study explored the attitudes of CCGs towards outsourcing commissioning support functions during the initial stage of the reform. The research took place between September 2011 and June 2012. We used a case study research design in eight CCGs, conducting in-depth interviews, observation of meetings and analysis of policy documents. We conducted 96 interviews and observed 146 meetings (a total of approximately 439 h). Many CCGs were reluctant to outsource core commissioning support functions (such as contracting) for fear of losing local knowledge and trusted relationships. Others were disappointed by the absence of choice and saw CSUs as monopolies and a recreation of the abolished PCTs. Many expressed doubts about the expectation that outsourcing of commissioning support functions will result in lower administrative costs. Given the nature of healthcare commissioning, outsourcing vital commissioning support functions may not be the preferred option of CCGs. Considerations of high transaction costs, and the risk of fragmentation of services and loss of trusted relationships involved in short-term contracting, may lead most CCGs to decide to form long-term partnerships with commissioning support suppliers in the future. This option, however, limits competition by creating 'network closure' and calls into question the Government's intention to create a vibrant market of commissioning support

  9. 75 FR 53685 - Blue Ribbon Commission on America's Nuclear Future

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-01

    ... DEPARTMENT OF ENERGY Blue Ribbon Commission on America's Nuclear Future AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces an open meeting of the Blue Ribbon Commission on America's Nuclear Future (the Commission). The Commission was...

  10. 76 FR 71334 - Blue Ribbon Commission on America's Nuclear Future

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-17

    ... DEPARTMENT OF ENERGY Blue Ribbon Commission on America's Nuclear Future AGENCY: Office of Nuclear Energy, Department of Energy. ACTION: Notice of open meeting. SUMMARY: This notice announces an open meeting of the Blue Ribbon Commission on America's Nuclear Future (the Commission). The Commission was...

  11. 77 FR 32951 - Commission Agenda and Priorities; Notice of Hearing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-04

    ... CONSUMER PRODUCT SAFETY COMMISSION Commission Agenda and Priorities; Notice of Hearing AGENCY: U.S. Consumer Product Safety Commission. ACTION: Notice of public hearing. SUMMARY: The U.S. Consumer Product... Secretary, U.S. Consumer Product Safety Commission, 4330 East West Highway, Bethesda, MD 20814, no later...

  12. 77 FR 14517 - Notice of Commission Staff Attendance at MISO Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-12

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission Notice of Commission Staff Attendance at MISO Meetings The Federal Energy Regulatory Commission hereby gives notice that members of the Commission and Commission staff may attend the following MISO-related meetings: Order 1000 Right of First...

  13. 76 FR 55368 - Notice of Commission Meeting and Public Hearing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-07

    ... DELAWARE RIVER BASIN COMMISSION Notice of Commission Meeting and Public Hearing Notice is hereby given that the Delaware River Basin Commission will hold a public hearing on Wednesday, September 21... Jersey. The hearing will be part of the Commission's regularly scheduled business meeting, which is open...

  14. 78 FR 37797 - Commission Agenda and Priorities; Notice of Hearing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-24

    ... CONSUMER PRODUCT SAFETY COMMISSION Commission Agenda and Priorities; Notice of Hearing AGENCY: U.S. Consumer Product Safety Commission. ACTION: Notice of public hearing. SUMMARY: The U.S. Consumer Product... mailed or delivered to the Office of the Secretary, U.S. Consumer Product Safety Commission, 4330 East...

  15. Federal Election Commission.

    ERIC Educational Resources Information Center

    Elliot, Lee Ann

    1996-01-01

    Presents a concise overview of the responsibilities, membership, structure, and requirements of the Federal Election Commission (FEC). Created in 1974, the FEC oversees the financial activities of candidates and political parties. Discusses corporate and union political action committees (PACs) as well as contribution limits and prohibitions. (MJP)

  16. Mississippi Library Commission.

    ERIC Educational Resources Information Center

    Mississippi Library Commission, Jackson.

    This document presents funding and expenditure statistics for the Mississippi Library Commission for fiscal year 1995, as well as an overview of developments in the state's public libraries. These developments include budget increases; increased circulation and use of electronic reference sources; additional staffing; and developments in state…

  17. 36 CFR 401.6 - Approval by National Commission of Fine Arts.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Commission of Fine Arts. 401.6 Section 401.6 Parks, Forests, and Public Property AMERICAN BATTLE MONUMENTS COMMISSION MONUMENTS AND MEMORIALS § 401.6 Approval by National Commission of Fine Arts. A design for a... Commission of Fine Arts before the Commission can accept it. ...

  18. 78 FR 28825 - Commission Information Collection Activities (FERC-577); Comment Request

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. IC13-12-000] Commission Information Collection Activities (FERC-577); Comment Request AGENCY: Federal Energy Regulatory Commission... Act of 1995, 44 USC 3507(a)(1)(D), the Federal Energy Regulatory Commission (Commission or FERC) is...

  19. 36 CFR 401.6 - Approval by National Commission of Fine Arts.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Commission of Fine Arts. 401.6 Section 401.6 Parks, Forests, and Public Property AMERICAN BATTLE MONUMENTS COMMISSION MONUMENTS AND MEMORIALS § 401.6 Approval by National Commission of Fine Arts. A design for a... Commission of Fine Arts before the Commission can accept it. ...

  20. 19 CFR 201.3 - Commission offices, mailing address, and hours.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    .... 201.3 Section 201.3 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF... Commission's offices are located in the United States International Trade Commission Building on 500 E Street... the “Secretary, U.S. International Trade Commission, 500 E Street SW., Washington, DC 20436.” (c...

  1. 19 CFR 201.3 - Commission offices, mailing address, and hours.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    .... 201.3 Section 201.3 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF... Commission's offices are located in the United States International Trade Commission Building on 500 E Street... the “Secretary, U.S. International Trade Commission, 500 E Street SW., Washington, DC 20436.” (c...

  2. 19 CFR 201.3 - Commission offices, mailing address, and hours.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    .... 201.3 Section 201.3 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF... Commission's offices are located in the United States International Trade Commission Building on 500 E Street... the “Secretary, U.S. International Trade Commission, 500 E Street SW., Washington, DC 20436.” (c...

  3. 19 CFR 201.3 - Commission offices, mailing address, and hours.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    .... 201.3 Section 201.3 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF... Commission's offices are located in the United States International Trade Commission Building on 500 E Street... the “Secretary, U.S. International Trade Commission, 500 E Street SW., Washington, DC 20436.” (c...

  4. 19 CFR 201.3 - Commission offices, mailing address, and hours.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    .... 201.3 Section 201.3 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF... Commission's offices are located in the United States International Trade Commission Building on 500 E Street... the “Secretary, U.S. International Trade Commission, 500 E Street SW., Washington, DC 20436.” (c...

  5. 18 CFR 375.102 - Custody and authentication of Commission records.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... authentication of Commission records. 375.102 Section 375.102 Conservation of Power and Water Resources FEDERAL... Provisions § 375.102 Custody and authentication of Commission records. (a) Custody of official records. (1...) Authentication of Commission action. All orders and other actions of the Commission shall be authenticated or...

  6. 16 CFR 1018.14 - Non-Commission established advisory committees.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 16 Commercial Practices 2 2010-01-01 2010-01-01 false Non-Commission established advisory committees. 1018.14 Section 1018.14 Commercial Practices CONSUMER PRODUCT SAFETY COMMISSION GENERAL ADVISORY COMMITTEE MANAGEMENT Establishment of Advisory Committees § 1018.14 Non-Commission established advisory...

  7. Crew-Aided Autonomous Navigation

    NASA Technical Reports Server (NTRS)

    Holt, Greg N.

    2015-01-01

    A sextant provides manual capability to perform star/planet-limb sightings and offers a cheap, simple, robust backup navigation source for exploration missions independent from the ground. Sextant sightings from spacecraft were first exercised in Gemini and flew as the lost-communication backup for all Apollo missions. This study characterized error sources of navigation-grade sextants for feasibility of taking star and planetary limb sightings from inside a spacecraft. A series of similar studies was performed in the early/mid-1960s in preparation for Apollo missions. This study modernized and updated those findings in addition to showing feasibility using Linear Covariance analysis techniques. The human eyeball is a remarkable piece of optical equipment and provides many advantages over camera-based systems, including dynamic range and detail resolution. This technique utilizes those advantages and provides important autonomy to the crew in the event of lost communication with the ground. It can also provide confidence and verification of low-TRL automated onboard systems. The technique is extremely flexible and is not dependent on any particular vehicle type. The investigation involved procuring navigation-grade sextants and characterizing their performance under a variety of conditions encountered in exploration missions. The JSC optical sensor lab and Orion mockup were the primary testing locations. For the accuracy assessment, a group of test subjects took sextant readings on calibrated targets while instrument/operator precision was measured. The study demonstrated repeatability of star/planet-limb sightings with bias and standard deviation around 10 arcseconds, then used high-fidelity simulations to verify those accuracy levels met the needs for targeting mid-course maneuvers in preparation for Earth reen.

  8. 75 FR 48661 - Equity and Excellence Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-11

    ... DEPARTMENT OF EDUCATION Equity and Excellence Commission AGENCY: U.S. Department of Education, Office for Civil Rights. ACTION: Notice of Establishment of the Equity and Excellence Commission. SUMMARY: The U.S. Secretary of Education (Secretary) announces the establishment of the Equity and Excellence...

  9. Wyoming Community College Commission Annual Report, 2010

    ERIC Educational Resources Information Center

    Wyoming Community College Commission, 2010

    2010-01-01

    The Wyoming Community College Commission (WCCC) serves the system of Wyoming's seven community colleges. Wyoming's seven community colleges provide affordable, accessible and lifelong education. The Wyoming Community College Commission supports the colleges through advocacy, coordination and collaboration. In partnership with the colleges, the…

  10. 76 FR 23798 - Blue Ribbon Commission on America's Nuclear Future

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-28

    ... DEPARTMENT OF ENERGY Blue Ribbon Commission on America's Nuclear Future AGENCY: Office of Nuclear... meeting of the Blue Ribbon Commission on America's Nuclear Future (the Commission). The Commission was... high-level wastes--in light of the events in Japan. The second purpose is to allow the Co-chairs of the...

  11. 17 CFR 260.0-5 - Business hours of the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 3 2010-04-01 2010-04-01 false Business hours of the Commission. 260.0-5 Section 260.0-5 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION... Business hours of the Commission. (a) General. The principal office of the Commission, at 100 F Street, NE...

  12. Commissioning of specialist palliative care services in England.

    PubMed

    Lancaster, Harriet; Finlay, Ilora; Downman, Maxwell; Dumas, James

    2018-03-01

    Some failures in end-of-life care have been attributed to inconsistent provision of palliative care across England. We aimed to explore the variation in commissioning of services by Clinical Commissioning Groups (CCGs) using a data collection exercise. We sent a Freedom of Information request in the form of an open questionnaire to all 209 CCGs in England to assess their commissioning of palliative and end-of-life care services, mainly focused on the provision of specialist palliative care services. 29 CCGs provided information about the number of patients with some form of palliative care needs in their population. For specialist palliative care services, CCGs allocated budgets ranging from £51.83 to £2329.19 per patient per annum. 163 CCGs (77.90%) currently commission 7-day admission to their specialist palliative care beds. 82.84% of CCGs commission 7-day specialist palliative care services in patients' own homes and out-of-hours services rely heavily on hospice provision. 64 CCGs (31.37%) commission pain control teams, the majority of whom only operate in regular working hours. 68.14% of CCGs reported commissioning palliative care education of any sort for healthcare professionals and 44.85% of CCGs had no plans to update or review their palliative care services. The most important finding from this exercise is that the information CCGs hold about their population and services is not standardised. However, information based on data that are more objective, for example, population and total budget for palliative care, demonstrate wide variations in commissioning. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  13. 16 CFR 1.42 - Notice to Commission.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... information as to its organization, business, conduct, practices, management, and relation to other... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Notice to Commission. 1.42 Section 1.42 Commercial Practices FEDERAL TRADE COMMISSION ORGANIZATION, PROCEDURES AND RULES OF PRACTICE GENERAL...

  14. 2005 Base Closure and Realignment Commission Report

    EPA Pesticide Factsheets

    The 2005 Defense Base Closure and Realignment Commission is proud to present its Final Report for your consideration. As required by law, the Commission thoroughly and objectively reviewed the domestic installation closure and realignment recommendations proposed by the Secretary of Defense on May 13, 2005.

  15. 75 FR 3488 - Flight 93 National Memorial Advisory Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-21

    ... DEPARTMENT OF THE INTERIOR National Park Service Flight 93 National Memorial Advisory Commission... forth the date of the February 6, 2010 meeting of the Flight 93 Advisory Commission. DATES: The public.... (Eastern). The Commission will meet jointly with the Flight 93 Memorial Task Force. Location: The meeting...

  16. 75 FR 43199 - Flight 93 National Memorial Advisory Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    ... DEPARTMENT OF THE INTERIOR National Park Service Flight 93 National Memorial Advisory Commission... sets forth the date of the August 7, 2010, meeting of the Flight 93 Advisory Commission. DATES: The.... (Eastern). The Commission will meet jointly with the Flight 93 Memorial Task Force. Location: The meeting...

  17. 78 FR 78352 - Orlando Utilities Commission; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-26

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. NJ14-4-000] Orlando Utilities Commission; Notice of Filing Take notice that on December 18, 2013, Orlando Utilities Commission submitted its tariff filing per 35.28(e): Order No. 1000 Further Regional Compliance Filing to be effective...

  18. 75 FR 37789 - Orlando Utilities Commission; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-30

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. NJ10-2-000] Orlando Utilities Commission; Notice of Filing June 23, 2010. Take notice that on June 11, 2010, the Orlando Utilities Commission filed, pro forma revised tariff sheets for inclusion in its open access transmission...

  19. Arizona Commission of Indian Affairs 1976-1977 Annual Report.

    ERIC Educational Resources Information Center

    Arizona Commission of Indian Affairs, Phoenix.

    Issued to inform the Governor, State Legislature, and tribal governments of the proceedings, transactions, findings, and recommendations made by the Commission, this 1976-77 annual report includes the following: the Commission's membership; population and acreage of Arizona reservations; commission meetings during the year; projects completed;…

  20. 17 CFR 9.33 - Final decision by the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Final decision by the Commission. 9.33 Section 9.33 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES... appellant raise important questions of law or policy, the Commission may, by appropriate order, summarily...

  1. The "nation's conscience:" assessing bioethics commissions as public forums.

    PubMed

    Dzur, Albert W; Levin, Daniel

    2004-12-01

    As the fifth national bioethics commission has concluded its work and a sixth is currently underway, it is time to step back and consider appropriate measures of success. This paper argues that standard measures of commissions' influence fail to fully assess their role as public forums. From the perspective of democratic theory, a critical dimension of this role is public engagement: the ability of a commission to address the concerns of the general public, to learn how average citizens resolve moral issues in healthcare, and to monitor public opinion on the topics addressed in the commission. Such a public forum role is supported by the critical literature within bioethics, which has deemed some commissions successful, supported more generally by the history of bioethics as a reform discourse that has brought socially important values into the medical domain, and supported more generally still by the example of the great social issues commissions of the 1960s.

  2. 19 CFR 207.117 - Review by Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 3 2010-04-01 2010-04-01 false Review by Commission. 207.117 Section 207.117 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION NONADJUDICATIVE INVESTIGATIONS INVESTIGATIONS OF WHETHER INJURY TO DOMESTIC INDUSTRIES RESULTS FROM IMPORTS SOLD AT LESS THAN FAIR VALUE OR FROM...

  3. 75 FR 48662 - Equity and Excellence Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-11

    ... achieve equity in the distribution of educational resources and further student performance, especially for the students at the lower end of the achievement gap. The Commission will examine the disparities... good judgment. The Secretary will appoint members for the life of the Commission, which will span...

  4. 49 CFR 207.3 - Designation and commissioning.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., DEPARTMENT OF TRANSPORTATION RAILROAD POLICE OFFICERS § 207.3 Designation and commissioning. (a) A railroad may designate employees to be commissioned by a state authority as railroad police officers to serve in the states in which the railroad owns property. (b) The designated railroad police officer shall...

  5. 76 FR 4131 - Flight 93 National Memorial Advisory Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-24

    ... DEPARTMENT OF THE INTERIOR National Park Service Flight 93 National Memorial Advisory Commission... notice sets forth the date of the February 5, 2011, meeting of the Flight 93 Advisory Commission. DATES.... to 1 p.m. (Eastern). The Commission will meet jointly with the Flight 93 Memorial Task Force...

  6. 75 FR 17158 - Flight 93 National Memorial Advisory Commission

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-05

    ... DEPARTMENT OF THE INTERIOR National Park Service Flight 93 National Memorial Advisory Commission... sets forth the date of the May 1, 2010, meeting of the Flight 93 Advisory Commission. DATES: The public...). The Commission will meet jointly with the Flight 93 Memorial Task Force. Location: The meeting will be...

  7. 76 FR 35209 - Orlando Utilities Commission; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-16

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. NJ11-12-001] Orlando Utilities Commission; Notice of Filing Take notice that on May 26, 2011, Orlando Utilities Commission submitted its tariff filing per 35.17(b): Amendment to Compliance Filing to be effective 4/15/2011. Any...

  8. 76 FR 49469 - Orlando Utilities Commission; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-10

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. NJ11-15-000] Orlando Utilities Commission; Notice of Filing Take notice that on July 29, 2011, Orlando Utilities Commission (OUC), pursuant to section 205 of the Federal Power Act (FPA) \\1\\ and Part 35 of the Federal Energy Regulatory...

  9. 76 FR 25685 - Orlando Utilities Commission; Notice of Filing

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-05

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. NJ11-12-000] Orlando Utilities Commission; Notice of Filing Take notice that on April 15, 2011, Orlando Utilities Commission submitted its tariff filing per 35.25(e): Order 890 compliance to be effective 4/15/2011. Any person...

  10. 17 CFR 232.12 - Business hours of the Commission.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 17 Commodity and Securities Exchanges 2 2011-04-01 2011-04-01 false Business hours of the Commission. 232.12 Section 232.12 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION... documents may be submitted by direct transmission, via dial-up modem or Internet, to the Commission each day...

  11. 17 CFR 232.12 - Business hours of the Commission.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 17 Commodity and Securities Exchanges 2 2012-04-01 2012-04-01 false Business hours of the Commission. 232.12 Section 232.12 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION... documents may be submitted by direct transmission, via dial-up modem or Internet, to the Commission each day...

  12. 17 CFR 230.110 - Business hours of the Commission.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 2 2010-04-01 2010-04-01 false Business hours of the Commission. 230.110 Section 230.110 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION GENERAL RULES AND REGULATIONS, SECURITIES ACT OF 1933 General § 230.110 Business hours of the Commission...

  13. 76 FR 31307 - Commission of Fine Arts; Notice of Meeting

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-31

    ... COMMISSION OF FINE ARTS Commission of Fine Arts; Notice of Meeting The next meeting of the U.S. Commission of Fine Arts is scheduled for June 16, 2011, at 10 a.m. in the Commission offices at the National... Fine Arts, at the above address; by emailing [email protected] ; or by calling 202-504-2200. Individuals...

  14. State Emergency Response Commissions

    EPA Pesticide Factsheets

    The Governor of each state has designated a State Emergency Response Commission (SERC) that is responsible for implementing the Emergency Planning and Community Right-to-Know Act (EPCRA) provisions within its state.

  15. A Custom Fit with a Commissioned Song.

    ERIC Educational Resources Information Center

    Strempel, Eileen

    1999-01-01

    Discusses the benefits of commissioning a work for a choral group. Provides guidelines for music educators who commission a piece: (1) know your own needs; (2) find a composer who interests you; (3) help the composer select appropriate lyrics; (4) set a tentative schedule; (5) consider the costs. (CMK)

  16. 16 CFR 1013.4 - Public attendance at Commission meetings.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ...) Attendance by the public. Every portion of every Commission meeting shall be open to public observation... contained in paragraph (b) of this section, a Commission meeting or portions thereof shall be open to public... Commission meeting in open session. The number of public observers shall be limited only by availability of...

  17. Arizona Commission of Indian Affairs 1975-76 Annual Report.

    ERIC Educational Resources Information Center

    Arizona Commission of Indian Affairs, Phoenix.

    The Arizona Commission of Indian Affairs' annual report is issued to inform the Governor, State Legislature, and tribal governments of the proceedings, transactions, findings, and recommendations made by the Commission, and this 1975-76 report presents the following: (1) Commission membership; (2) a map of the American Indian reservation areas in…

  18. Solar Dynamics Observatory Launch and Commissioning

    NASA Technical Reports Server (NTRS)

    O'Donnell, James R., Jr.; Kristin, D.; Bourkland, L.; Hsu, Oscar C.; Liu, Kuo-Chia; Mason, Paul A. C.; Morgenstern, Wendy M.; Russo, Angela M.; Starin, Scott R.; Vess, Melissa F.

    2011-01-01

    The Solar Dynamics Observatory (SDO) was launched on February 11, 2010. Over the next three months, the spacecraft was raised from its launch orbit into its final geosynchronous orbit and its systems and instruments were tested and calibrated in preparation for its desired ten year science mission studying the Sun. A great deal of activity during this time involved the spacecraft attitude control system (ACS); testing control modes, calibrating sensors and actuators, and using the ACS to help commission the spacecraft instruments and to control the propulsion system as the spacecraft was maneuvered into its final orbit. This paper will discuss the chronology of the SDO launch and commissioning, showing the ACS analysis work performed to diagnose propellant slosh transient and attitude oscillation anomalies that were seen during commissioning, and to determine how to overcome them. The simulations and tests devised to demonstrate correct operation of all onboard ACS modes and the activities in support of instrument calibration will be discussed and the final maneuver plan performed to bring SDO on station will be shown. In addition to detailing these commissioning and anomaly resolution activities, the unique set of tests performed to characterize SDO's on-orbit jitter performance will be discussed.

  19. VINCI: the VLT Interferometer commissioning instrument

    NASA Astrophysics Data System (ADS)

    Kervella, Pierre; Coudé du Foresto, Vincent; Glindemann, Andreas; Hofmann, Reiner

    2000-07-01

    The Very Large Telescope Interferometer (VLTI) is a complex system, made of a large number of separated elements. To prepare an early successful operation, it will require a period of extensive testing and verification to ensure that the many devices involved work properly together, and can produce meaningful data. This paper describes the concept chosen for the VLTI commissioning instrument, LEONARDO da VINCI, and details its functionalities. It is a fiber based two-way beam combiner, associated with an artificial star and an alignment verification unit. The technical commissioning of the VLTI is foreseen as a stepwise process: fringes will first be obtained with the commissioning instrument in an autonomous mode (no other parts of the VLTI involved); then the VLTI telescopes and optical trains will be tested in autocollimation; finally fringes will be observed on the sky.

  20. Arizona Commission of Indian Affairs 1978-79 Annual Report.

    ERIC Educational Resources Information Center

    Arizona Commission of Indian Affairs, Phoenix.

    The Arizona Commission of Indian Affairs is the "official link between the tribes and state government" and acts in a liaison capacity as well as providing technical assistance. Critical issues having an impact on the Commission's over-all program, addressed within the Commission's legislative scope and highlighted in this 1978-79 Annual…