New concepts in the design of induction accelerators and their power supplies for space and military

This bibliographic study has been made from the available documents on the nowadays development of the accelerator breeder concept, aimed to fissile material production. This note describes briefly the linear accelerator principles and the mechanisms exis...

Recapitulation of concepts in accelerator design and discoveries made using certain types of accelerators are qualitatively provided as part of a lecture series. (D.C.W.)

A design study for a vacuum system aperture for the Advanced Test Accelerator is described. A combination suction/axial aerowindow concept is recommended. (GHT)

This report discusses different design concepts for particle beam accelerators. It demonstrates that with the use of high temperature superconducting materials, a more compact, lighter, and more robust accelerator design can be realized for the space base...

The Los Alamos Accelerator Transmutation of Nuclear Waste (ATW) concept uses an accelerator driven neutron source (target) surrounded by a moderator and multiplying medium (blanket) for the transmutation of actinide and fission product waste. The referenc...

Selected examples of advanced accelerator concepts are reviewed. Such plasma accelerators as plasma beat wave accelerator, plasma wake field accelerator, and plasma grating accelerator are discussed particularly as examples of concepts for ...

Design objectives are proposed for a continuous beam 2 GeV electron accelerator. Various accelerator concepts are examined in light of these requirements. A double-sided microtron shows promise for yielding major savings in capital cost and excellent beam characteristics.

The Accelerator Production of Tritium (APT) concept proposes the production of tritium by means of an accelerator and target system. The Los Alamos APT design incorporates a high-energy, high-current proton accelerator, a tungsten neutron source, a lead n...

, ingrid}@ee.ucla.edu ABSTRACT This paper describes a case study and design flow of a secure embedded. It presents the concept of HW/SW acceleration transparency, a systematic method to accelerate Java functions acceleration. The rest of the paper describes Java ...

The SLAC Damped Detuned Structure (DDS) is an accelerator structure designed to suppress the long range transverse wakefields which limit the performance of high current multibunch accelerators. We discuss the conceptual considerations which have led to its development and discuss the steps involved in arriving at a ...

An analysis is presented of charged transmission-line configurations for use in high-current accelerators. Basic drawbacks of the symmetric radial-pulse-line design are identified. The concept of using asymmetric pairs of transmission lines of various geo...

This paper considers the historical evolution of the concept of optimisation of radiation exposures, as commonly expressed by the acronym ALARA, and discusses its application to various aspects of radiation protection at high-energy accelerators. PMID:19783841

This project will analyze and design a novel oblique-detonation-wave (ODW), ram- accelerator-driven propulsion concept for the acceleration of tube-launched ...

Unlike most of the specialities treated in this volume, control system design is still an art, not a science. This presentation is an attempt to produce a primer for prospective practitioners of this art.

This report discusses different design concepts for particle-beam accelerators. It demonstrates that with the use of high-temperature superconducting materials, a more-compact, lighter, and more-robust accelerator design can be realized for the space-based neutral particle beam (NPB) ...

The basic scaling relations for important linear collider design parameters are introduced. Some of the basic concepts concerning the design of accelerating structures are presented, and breakdown limitations are discussed. Rf power sources are considered...

A controller-throttle design integration program was conducted for an advanced fighter concept with direct lift, direct side force, and high acceleration maneuvering capabilities. Several controller-throttle configuration design alternatives were evaluate...

The elements of microwave linear accelerators are introduced starting with the principles of acceleration and accelerating structures. Considerations for microwave structure modeling and design are developed from an elementary point of view. Basic elements of microwave electronics are described for application to ...

... retardation and acceleration) in fatigue crack growth. ... Similar comparisons on high strength 4340 steel ... fatigue life of test specimens without flaws, it ...

The SAI PV Technology Incubator Program is designed to accelerate technologies/prodesses that have successfully demonstrated a proof-of-concept/process in a laboratory.

which lead to attractive economics. The main goal is the development of accelerator concepts and designs leading to an attractive development path with fewer scientific...

The concept to use twin turbo-powered boosters for acceleration to supersonic staging speed followed

These two lectures on iron dominated magnets are meant for the student of accelerator science and contain general treatments of the subjects design and construction. The material is arranged in the categories: General Concepts and Cost Considerations, Pro...

assess the impact of various design concepts uponpassengercomfort response .... (I) Floor acceleration was as good an estimator of passenger comfort as seat ...

This report contains lecture notes on beam dynamics and acceleration concepts in particle accelerators. (LSP)

... warfare, joint planning, national and international politics ... in the accelerator, and the ... PROPULSION, *LINEAR ACCELERATORS, VELOCITY, GATES ...

An accelerator technology concept which has the potential to meet future Army and Navy mission requirements is the Dielectric Cavity, IFR Guided Recirculating Linear Induction Accelerator (IFRR). This paper presents the advantages of this concept and the areas of research to be pursued to establish the viability of ...

The development of a multicusp surface-production H exp - ion source (Berkeley concept) designed specifically for accelerator use is described. The goal of this development effort has been to provide a suitable H exp - ion source for the Proton Storage Ri...

The Los Alamos Accelerator Transmutation of Nuclear Waste (ATW) concept consists of four principal systems: accelerator, neutron spallation target, blanket, and chemical separator. The device is designed to transmute actinides and fission products carried...

Future accelerators will have to provide a high degree of reliability. Quality must be designed in right from the beginning and must remain a central theme throughout the project. The problem is similar to the problems facing US industry today, and examples of the successful application of quality engineering will be given. Different aspects of an ...

Induction acceleration is one of two principal approaches for producing ion beam for heavy-ion inertial fusion. This approach was first suggested by the late Denis Keefe of Lawrence Berkeley Laboratory and is the main approach of the US heavy-ion-fusion program. Induction accelerators have the ability to handle high beam currents; therefore, accumulation ...

... Descriptors : *ELECTRON ACCELERATORS, *LINEAR ACCELERATORS, *MICROWAVES, *TRAVELING WAVE ELECTRON ACCELERATORS ...

The basic scaling relations for important linear collider design parameters are introduced. Some of the basic concepts concerning the design of accelerating structures are presented, and breakdown limitations are discussed. Rf power sources are considered. Some of the key concepts of wakefield ...

Brookhaven National Laboratory Accelerator Test Facility is a laser-electron linear accelerator complex designed to provide high brightness beams for testing of advanced acceleration concepts and high power pulsed photon sources. Results of electron beam parameters attained during the ...

Accelerating Evolution by Direct Manipulation for Interactive Fashion Design Jong-Ha Lee, Hee the ability of global search to the original operators. We have applied the DM concept to the fashion design interface to a fashion design aid system based on IGA and had some experiments. 2. Fashion ...

Finite element modeling is being adopted in the design of ultrasonic transducers and imaging arrays. Impetus is accelerated product design cycles and the need to push the technology. Existing designs are being optimized and new concepts are being explored...

The Los Alamos Accelerator Transmutation of Waste (ATW) concept has many potential applications that include defense waste transmutation, defense material production (i.e., tritium and (sup 238)Pu), and the transmutation of hazardous nuclear wastes from c...

This guide to a workshop for primary teachers provides an introduction to the concepts of motion and forces. It is designed to provide teachers with an inquiry-based learning experience to the basic concepts of distance, speed, velocity, and acceleration. It also includes a brief introduction to forces and inertia. ...

The Accelerator Production of Tritium (APT) concept proposes the production of tritium by means of an accelerator and target system. The Los Alamos APT design incorporates a high-energy, high-current proton accelerator, a tungsten neutron source, a lead neutron multiplier, and a moderating ...

The Accelerator Production of Tritium (APT) concept proposes the production of tritium by means of an accelerator and target system. The Los Alamos APT design incorporates a high-energy, high-current proton accelerator, a tungsten neutron source, a lead neutron multiplier, and a moderating ...

Theoretical investigations of plasma-based accelerators and other advanced accelerator concepts. The focus of the work was on the development of plasma based and structure based accelerating concepts, including laser-plasma, plasma channel, and microwave driven plasma ...

We describe a new concept for a microwave circuit functioning as a charged-particle accelerator at mm wavelengths, permitting an accelerating gradient higher than conventional passive circuits can withstand consistent with cyclic fatigue. The device provides acceleration for multiple bunches in parallel channels, ...

The concept of using high-energy particle accelerators to produce neutrons for converting fertile material to fissile is over 25 years old. It is only relatively recently that accelerator design has progressed to a point where the operation approaches commercial viability. Critical unknowns in the ...

For the next generation of high performance, high average luminosity colliders, the factories,'' reliability engineering must be introduced right at the inception of the project and maintained as a central theme throughout the project. There are several aspects which will be addressed separately: Concept; design; motivation; management ...

For the next generation of high performance, high average luminosity colliders, the ``factories,`` reliability engineering must be introduced right at the inception of the project and maintained as a central theme throughout the project. There are several aspects which will be addressed separately: Concept; design; motivation; management techniques; and ...

Our Engineering Test Facility (ETF) driver concept is based on HERMES III and RHEPP technologies. Actually, it is a scaled-down version of the LMF design incorporating repetition rate capabilities of up to 10 Hz CW. The preconceptual design presented here...

The paper is a review of superconducting linacs that are of interest for heavy-ion acceleration. Most of the paper is concerned with energy boosters for projectiles from tandem electrostatic accelerators, the only application for which superconducting linacs are now used for heavy-ion acceleration. There is also a brief discussion of ...

The research into advanced acceleration concepts for electron linear accelerators being pursued at SLAC is reviewed. This research includes experiments in laser acceleration, plasma wakefield acceleration, and mmwavelength RF driven accelerators.

Proton beams can provide better dose conformity to the treatment target compared to commonly used photon and electron beams allowing for dose escalation and/or hypofractionation to increase local tumor control, reduce normal tissue complications and/or treatment time/cost. This paper reviews three novel proton accelerator designs that aim at cost-effective ...

Selected examples of advanced accelerator concepts are reviewed. Such plasma accelerators as plasma beat wave accelerator, plasma wake field accelerator, and plasma grating accelerator are discussed particularly as examples of concepts for ...

An initial design for a high-resolution, transportable neutron radiography system concept has been developed.The system requirement is taken to be a thermal neutron flux of 106 with a L/D of 100. The approach is to use an accelerator-driven neutron source, with a radiofrequency quadrupole (RFQ) as the primary ...

A study of pulsed spallation neutron source, that could deliver fluxes in excess of 1 /times/ 10/sup 17/ N/cm/sup 2/-sec began at Argonne in 1981. A review of various accelerator concepts to act as an intense charged particle source to generate spallation neutrons resulted in the selection of a Fixed-Field Alternating-Gradient (FFAG) ...

The document details the Superfund Accelerated Cleanup Model (SACM), the Office of Emergency and Remedial Response's new model for streamlining and accelerating the Superfund program. The concept has been designed to make Superfund work better and deliver results the public will value: (1) quick reduction ...

The concepts of heavy ion fusion (HIF) are summarized, especially those aspects that are important to its potential for generating electrical power in the civilian sector. Highlights of the various HIF programs throughout the world are included. The US Department of Energy (DOE) plans a program, beginning in 1984, aimed at determining the feasibility of using heavy ion ...

An outline is presented of some of the main elements of an electron accelerator radiological safety program. The discussion includes types of accelerator facilities, types of radiations to be anticipated, activity induced in components, air and water, and production of toxic gases. Concepts of radiation shielding ...

The conceptual design of a variable-phase asynchronous cyclotron (VPAC) is described, which provides longitudinal bunch compression of accelerated proton or ion beams, and thus, permits high current acceleration at higher accelerator efficiency, where the possible beam losses are minimized and the ...

... oblique detonations in the ram accelerator: Can the concept of using a stable, oblique detonation actually be viable for ram accelerators? ...

... Title : Experimental Evaluation of Track Accelerator ... a full scale accelerator which would ... Subject Categories : TEST FACILITIES, EQUIPMENT AND ...

... warfare, joint planning, national and international ... is recirculated through the accelerator. ... LINES, *ELECTRON ACCELERATORS, HIGH POWER ...

... Descriptors : *ELECTRON ACCELERATORS, *SOLIDS, DESIGN, LINEAR ACCELERATORS, MEASUREMENT, PHYSICAL PROPERTIES. ...

In the year 2000, a design concept of a Neutrino Factory based on Muon Storage Ring was studied at FNAL. To treat high energy spread of muons that come out of a target and decay channel and are to be accelerated before they go into the storage ring, a phase rotating scheme using a long-pulse accelerating system has ...

In the summer of 1989, a collaboration between Los Alamos National Laboratory and Brookhaven National Laboratory conducted a study to establish a reference design of a facility for accelerator production of tritium (APT). The APT concept is that of a neutron-spallation source, which is based on the use of high-energy protons to bombard ...

The concept involves the use of spallation neutrons produced by interaction of a high energy proton (1 to 2 GeV) from a linear accelerator (LINAC) with a heavy metal target (uranium). The principal spallator concept is based on generating fissile fuel for use in LWR nuclear power plants. The spallator functions in conjunction with a ...

We have developed a proof-of-concept prototype of an expert system for tuning particle beam accelerators. It is designed to function as an intelligent assistant for an operator. In its present form it implements the strategies and reasoning followed by the operator for steering through the beam transport section of the Advanced Test ...

Results from research on student understanding of velocity and acceleration have been used to guide the development of a conceptual approach to teaching kinematics. The authors describe how instruction based on the observation of actual motions can help students: (1) develop a qualitative understanding of velocity as a continuously varying quantity, of instantaneous velocity ...

As the frontier of particle physics moves towards higher energies, there is a mounting pressure on the accelerator physics community to develop new accelerating concepts resulting in more compact accelerators. This requires higher accelerating gradients and, owing to the trapping criterion, ...

A novel computer code is being developed to generate system level designs of radiofrequency ion accelerators. The goal of the Accelerator System Model (ASM) code is to create a modeling and analysis tool that is easy to use, automates many of the initial design calculations, supports trade studies used in assessing ...

A feasibility study is undertaken to determine whether a nuclear magnetoplasmadynamic (MPD) thermal rocket could replace nuclear thermal rockets and provide enhanced performance. The concept is based on liquid hydrogen propellant that generates electric power for an MPD accelerator, and the MPD accelerator is wrapped tightly around the ...

A property of the second-order achromat, whereby dipole and sextupole families may be inserted into a lattice for chromatic corrections without introducing second-order geometrical (on momentum) optical distortions, has been incorporated in several new particle accelerator designs. These include the SLC at SLAC, LEP at CERN, the EROS pulse stretcher ring ...

Proton induction linacs are explored as high intensity neutron sources. The induction linac - concept, properties, experience with electrons, and possibilities - and its limitations for accelerating ions are reviewed. A number of proton induction linac designs are examined with the LIACEP program and general conclusions are given. ...

The Beta-Beam is a concept of large-scale facility that aims at providing pure electronic neutrino and antineutrino beams for the measurement of ?e^{} ? ?_{?}^{} oscillations. Beta-decaying nuclides are produced in large amounts in a facility of the scale of EURISOL, and are then post-accelerated and stored at large ? in a racetrack decay ring. We present ...

A property of the second-order achromat, whereby dipole and sextupole families may be inserted into a lattice for chromatic corrections without introducing second-order geometrical (on momentum) optical distortions, has been incorporated in several new particle accelerator designs. These include the SLC at SLAC, LEP at CERN, the EROS pulse stretcher ring ...

A novel computer code is being developed to generate system level designs of radiofrequency ion accelerators with specific applications to machines of interest to Accelerator Driven Transmutation Technologies (ADTT). The goal of the Accelerator System Model (ASM) code is to create a modeling and analysis tool that ...

A novel computer code is being developed to generate system level designs of radiofrequency ion accelerators with specific applications to machines of interest to Accelerator Driven Transmutation Technologies (ADTT). The goal of the Accelerator System Model (ASM) code is to create a modeling and analysis tool that ...

EMMA stands for Electron Model of Muon Accelerator and is expected to demonstrate that a nonscaling FFAG can accelerate a beam quickly with large acceptance in both transverse and longitudinal directions, that is necessary for muon acceleration. We will study resonance crossing and outside bucket acceleration in ...

EMMA stands for Electron Model of Muon Accelerator and is expected to demonstrate that a nonscaling FFAG can accelerate a beam quickly with large acceptance in both transverse and longitudinal directions, that is necessary for muon acceleration. We will study resonance crossing and outside bucket acceleration in ...

This paper will briefly summarize the concepts of Heavy Ion Fusion (HIF), especially those aspects that are important to its potential for generating electrical power. It will also note highlights of the various HIF programs throughout the world. Especially significant is that the US Department of Energy (DOE) plans a program, beginning in 1984, aimed at determining the ...

The non-scaling Fixed Field Alternating Gradient (FFAG-from now on) accelerator provides few advantages with respect to the other fixed field accelerators like CYCLOTRONS or scaling-FFAG's. One of the advantages is smaller required aperture due to small orbit offsets during acceleration. The large and heavy magnets are ...

Magnetohydrodynamic (MHD) power generation concept has been proposed and studied worldwide as one of the future power generation sources. An advanced one fluid two phase liquid metal (LM) MHD power generation concept was developed for space nuclear power generation design. The concept employs a nozzle to ...

The use of hydrogen furnace brazing has been applied as a joining technology to the fabrication of a Radio-Frequency-Quadrupole (RFQ) linac for the Los Alamos Accelerator Performance Demonstration Facility (APDF). The design concept provides a monolithic ...

concrete (HMAC) layer. The concept is referred to as "stone interlayer design." The increase in performance of reclaimed asphalt pavement (RAP) produced from various rehabilitation jobs throughout the state. LADOTD

Recently a study on recirculating induction linac drivers for HIF was initiated to address feasibility and cost. One of the major engineering issues associated with designing and building a recirculating induction accelerator is the method used to drive t...

The laced electromagnetic wiggler is a new concept being developed to attain higher magnetic fields, shorter wavelengths, and larger gaps for the induction-linear accelerator, free-electron-laser (FEL) program. In the laced wiggler design, permanent magne...

All accelerator-based fast-neutron contraband interrogation systems have many closely interrelated subsystems, whose performance parameters will be critically interdependent. For optimal overall performance, a systems analysis design approach is required....

A property of the second-order achromat, whereby dipole and sextupole families may be inserted into a lattice for chromatic corrections without introducing second-order geometrical (on momentum) optical distortions, has been incorporated in several new pa...

In this document the authors summarize the following: (1) an overview of basic concepts of ultrahigh vacuum needed for the APS project, (2) a description of vacuum design and calculations for major parts of APS, including linac, linac waveguide, low energ...

This report contains the following papers: Beam Current Monitors; Beam Position Monitoring; Beam Profile Measurements; Longitudinal Emittance: An Introduction to the Concept and Survey of Measurement Techniques Including Design of a Wall Current Monitor; Transverse Emittance: Its Definition, Applications, and Measurements; Loss Monitors; and Brookhaven ...

Cogent confabulation is a computation model that mimics the Hebbian learning, information storage, inter-relation of symbolic concepts, and the recall operations of the brain. The model has been applied to cognitive processing of language, audio and visua...

Study of a small accelerator-driven subcritical research reactor in the Vin?a Institute of Nuclear Sciences was initiated in 1999. The idea was to extract a beam of medium-energy protons or deuterons from the TESLA accelerator installation, and to transport and inject it into the reactor. The reactor core was to be composed of the highly enriched uranium ...

The Idaho National Engineering Laboratory (INEL) has initiated the design and development of a novel pulsed accelerator-based, active interrogation concept. The proposed concept, referred to as the Material Identification Technology (MIT), enables rapid (between accelerator pulses), ...

More than 15 Japanese laboratories are dedicated to the advanced and compact accelerator development. Some use ultra-intense lasers and others use microwave concepts. As for the laser electron acceleration, the topics are the capillary acceleration and the mono-energetic acceleration. The laser ...

A summary is given of the activities of those in the Media Accelerator Group. Attention was focused on the Inverse Cherenkov Accelerator, the Laser Focus Accelerator, and the Beat Wave Accelerator. For each of these the ultimate capability of the concept was examined as well as the next series ...

Accelerator concepts discussed include the wake-field accelerator, the two-beam accelerator, the inverse free electron laser, and the laser plasma wave accelerator. (GHT). 18 references, 12 figures.

The wakefield accelerator concept consists of utilizing the electric field generated by the motion of one group of particles to accelerate another group of particles. Essentially, the wakefield accelerator is a transformer which transfers the energy in a ...

An electron-beam rocket pellet accelerator has been designed, built, assembled, and tested as a proof-of-principle (POP) apparatus. The main goal of accelerators based on this concept is to use intense electron-beam heating and ablation of a hydrogen propellant stick to accelerate deuterium ...

The design concept and scientific justification for an Eastern Meson Facility is described. The proposed facility would provide high intensity pion and muon beams up to 300 MeV for physical research, and would place an equal emphasis on pion therapy and physics research. The main accelerator would be a 580 MeV CW separated-sector ...

The concept to use twin turbo-powered boosters for acceleration to supersonic staging speed followed by an all rocket powered orbiter stage was proposed. A follow-on design study was then made of the concept with the performance objective of placing a 29,...

... Accession Number : AD0637068. Title : THEORY AND DESIGN OF LINEAR ACCELERATORS: COLLECTION OF ARTICLES. ...

Accelerator R&D has played a crucial role in enabling scientific discovery in the past century and will continue to play this role in the years to come. In the U.S., the Office of High Energy Physics of DOE's Office of Science is developing a plan for national accelerator R&D stewardship. Fermilab undertakes ...

This report summarizes the research performed in the past year in the Argonne Physics Division. The Division's programs include operation of ATLAS as a national heavy-ion user facility, nuclear structure and reaction research with beams of heavy ions, accelerator research and development especially in superconducting radio frequency technology, nuclear theory and ...

The design of an ablation accelerator suitable as driver for impact fusion and of a projectile to be accelerated by the accelerator is discussed. The proposed approach which offers an attractive option to accelerate the iron projectile to a hypervelocity ...

A common coil design concept for 2-in-1 superconducting accelerator magnets is presented. It practically eliminates the major problems in the ends of high field magnets built with either high temperature superconductors (HTS) or conventional superconductors. Racetrack coils, consisting of rectangular blocks built with either ...

The proton linac for APT (Accelerator Production of Tritium) will produce a nominal CW beam power of 130 MW at 1300 MeV. Two designs are currently under consideration. Reference design is composed entirely of normal-conducting (NC) copper accelerating structures, while an advanced-technology ...

The progress in the field of designing and constructing a heavy-current proton linear accelerator became noticeable last year and allows one to count on large-scale industrial linac application. Symbiosis of linac and subcritical reactor as target has new opportunities for energetics. This accelerator concept is ...

The Two-Beam Accelerator concept is one of the most promising methods for producing RF power for future linear colliders. In particular it allows upgrades to multi-TeV energies. One of its challenges is the production of the high current drive beam, which as it passes through decelerating structures, produces RF power for acceleration ...

Preceded by a short discussion of the motives for using permanent magnets in accelerators, a new type of permanent magnet for use in accelerators is presented. The basic design and most important properties of a quadrupole will be described that uses both steel and permanent magnet material. The field gradient produced by this magnet ...

We present a study on the use of component technology for encapsulating platform-specific hardwareaccelerated algorithms on hybrid HPC systems. Our research shows that component technology can have significant benefits from a software engineering pointof- view to increase encapsulation, portability and reduce or eliminate platform dependence for hardwareaccelerated algorithms. As a demonstration ...

Advances in the design and performance of electrostatic accelerators since 1969 are reviewed with special emphasis on the ''forefront'' accelerators that are currently leading in voltage capability. A comparison of the acceleration tube design offered by ...

The Working Group 3 papers were divided into two general categories, those related to laser-based schemes and those based on microwave technology. In the laser-based area highlights include ongoing theoretical and experimental efforts to demonstrate electron acceleration in vacuum based either on ponderomotive or nonponderomotive mechanisms. Papers on advanced issues such as ...

SciDAC has had a major impact on computational beam dynamics and the design of particle accelerators. Particle accelerators--which account for half of the facilities in the DOE Office of Science Facilities for the Future of Science 20 Year Outlook--are crucial for US scientific, industrial, and economic competitiveness. Thanks to ...

We describe a new concept for a microwave circuit functioning as a charged-particle accelerator at mm-wavelengths, permitting an accelerating gradient higher than conventional passive circuits can withstand consistent with cyclic fatigue. The device provides acceleration for multiple bunches in parallel channels, ...

A modular instrumentation panel has been designed and built for testing and installation on a linear accelerator at Los Alamos. This type of panel uses a modular approach to the monitoring of water-cooling system parameters. The panel design allows for its installation in various line sizes while using essentially the same ...

We present a design concept for an e{sup +}e{sup -} linear collider based on laser-driven dielectric accelerator structures, and discuss technical issues that must be addressed to realize such a concept. With a pulse structure that is quasi-CW, dielectric laser accelerators potentially offer ...

The alignment of the superconducting RF-cavities and the magnet packages of the cryomodules of the future XFEL linear accelerator and the existing TTF linear accelerator at DESY can be affected by the mechanical stress caused by thermal gradients during the cool-down and warm-up. Also the design of the XFEL cryogenic system has to ...

The general characteristics of heavy-ion linacs are summarized, with emphasis on the similarities and differences of systems based on different technologies. The main design considerations of superconducting linacs are outlined, the many projects based on this technology are listed, and a new concept for a superconducting injector linac is described. The ...

The recent development of miniature inductive adders has made it feasible to design programmable, high-repetition-rate pulsers with a substantially higher voltage than is possible using a conventional field-effect transistor architecture. Prototype pulsers using the new technology are being developed as part of a series of experiments at LLNL to test the ...

LACARA (laser cyclotron auto-resonance accelerator) is an `advanced concept' vacuum laser accelerator of electrons that is in the design and construction phase at the Accelerator Test Facility at Brookhaven National Laboratory. As a bunch moves along a solenoidal magnetic field (~ 6T), it is to ...

Current trends in research in medium energy physics with electromagnetic probes are reviewed briefly and design objectives are proposed for a continuous beam 2 GeV electron accelerator. Various types of accelerator systems are discussed and exploratory designs developed for two concepts, the ...

Current trends in research in medium energy physics with electromagnetic probes are reviewed briefly and design objectives are proposed for a national continuous beam 2 GeV electron accelerator. Various types of accelerator systems are discussed and exploratory designs developed for two ...

A new concept in low energy proton/ion accelerators is being developed at accelerator facilities throughout the world. This concept is labeled the RFQ linac (Radio-Frequency Quadrupole) and was first proposed by Kapchinskii and Teplyakov and more extensively developed by scientists at Los Alamos, where precise ...

We report on the current status of our program to apply Photonic Band Gap (PBG) concepts to produce novel high-energy, high-intensity accelerator cavities. The PBG design on which we have concentrated our initial efforts consists of a square array of metal cylinders, terminated by conducting or superconducting sheets, and surrounded by ...

Superconducting accelerator magnets usually have magnetic iron yokes to obtain maximum magnetic field and to limit stray field. However, the iron is expensive and heavy. The smaller size and weight of an iron-free magnet can result in lower magnet and refrigeration costs. However in a colliding beam accelerator the stray field from one ring produces ...

Hounsell and Wilkinson (1997 Phys. Med. Biol. 42 1737 49) have demonstrated that the concept of a scatter-plane source can accurately describe head scatter in irregularly shaped fields produced by the MLC of an Elekta linear accelerator. In these linacs, the solid jaw is below the MLC set and plays no part on defining the view of the main source of head ...

The Advanced Photon Source (APS) linear accelerator beam could be used to produce slow positrons during the hours between the storage ring injection cycles. Initial concepts for the design of a target that is optimized for slow-positron production are discussed, and simulation results are presented. Some possible ways to increase the ...

... Descriptors : *CYCLOTRON RESONANCE, *ION ACCELERATORS, DIODES ... Subject Categories : PARTICLE ACCELERATORS NUCLEAR ...

The recently developed Nonlinear Amplification of Inverse Bremsstrahlung Electron Accelerator Concept is given a detailed qualitative description here.

A new concept for particle acceleration for micrometeoroid simulation was developed at NASA Marshall

... joint planning, national and international ... I. FARAD: Faraday Accelerator with RF ... PROPULSION, *ELECTROSTATIC ACCELERATORS, *PLASMA ...

This book is an outgrowth of a course given by the authors at various universities and particle accelerator schools. It starts from the basic physics principles governing particle motion inside an accelerator, and leads to a full description of the complicated phenomena and analytical tools encountered in the design and operation of a ...

The Los Alamos concept for accelerator transmutation of nuclear waste (ATW) employs a high-power proton linear accelerator to generate intense fluxes of thermal neutrons (>10{sup 16} n/cm{sup 2}-s) through spallation on a lead-bismuth target. The nominal beam energy for an ATW accelerator is 1.6 GeV, with ...

The development of impact fusion power reactor concepts is very limited at this time. Key systems factors in arriving at practical concepts will be conception of credible systems and subsystems which promise an acceptable overall energy balance and development of target/projectile designs and gain versus projectile ...

A new concept in low-energy particle accelerators, the radio-frequency quadrupole (RFQ) linac, is currently being developed at the Los Alamos National Scientific Laboratory. In this new linear accelerating structure both the focusing and accelerating forces are produced by the rf fields. It can accept a ...

The MUSE-4 experiment, dedicated to the Accelerator Driven System (ADS) development studies, was achieved in the MASURCA nuclear reactor facility from 2000 to 2004. An external neutron source was introduced in a lead buffer zone located at the centre of the reactor core in order to simulate the spallation source. This paper deals with the GENEPI ...

Software packages in accelerator physics have relatively long life cycles. They had been developed and used for a wide range of accelerators in the past as well as for the current projects. For example, the basic algorithms written in the first accelerator Program TRANSPORT are actual for design of most magnet ...

Since 1986, the Idaho National Engineering Laboratory (INEL) has been involved in the development of epithermal neutron sources for BNCT. The INEL effort was instrumental in the implementation of an epithermal neutron beam at the Brookhaven Medical Research Reactor at Brookhaven National Laboratory. Recently, the INEL's effort has been directed toward developing advanced filter ...

Over the past 18 months on the GTA project at Los Alamos, we have been developing tools for building control systems for accelerators. The first tool developed has already demonstrated greatly reduced requirements for conventional computer programming in applying control systems to an accelerator. Even in the early stages, this work has received ...

The ion source, acceleration tube, and beam transport system for the Lawrence Livermore Laboratory (LLL) T(d,n) /sup 3/He neutron sources are described. To produce 4 x 10/sup 13/ n/s, a 150-mA D/sup +/ beam at 400 keV is required. A 17-aperture version of the reflex-arc MATS-III ion source is under test for this use. To simplify the acceleration tube and ...

Jun 16, 2011 � Title: Concepts in the development of new accelerated test methods for wood decay. Author: Nicholas, Darrel D.; Crawford, Douglas ...

When the authors first proposed an accelerator-driven reactor, the concept was opposed by physicists who had earlier used the accelerator for their physics experiments. This opposition arose because they had nuisance experiences in that the accelerator wa...

This paper discusses some concepts of future accelerators such as free electron lasers, two beam accelerator; and plasma-based adiabatic compressor. 12 refs., 10 figs., 5 tabs. (LSP)

Two masses are moving along a grid with varying accelerations. Learners are to answer questions regarding acceleration and the two masses.

Collective effect acceleration concepts are very briefly reviewed with an eye to their relevance to the acceleration of particles to ultra-high energies.

accelerator science, and a source of many innovative concepts, within the Accelerator and Fusion Research Division. We have core expertise in accelerator physics and theory,...

of Advanced Accelerator Concepts. Student poster award winners: Working Group 1: Laser-plasma accelerators Poster winner: Jens Osterhoff, MPQ Working Group 2: Computation Poster...