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Insertion device and beam line plans for the Advanced Photon Source: A report and recommendations by the Insertion Device and Beam Line Planning Committee

Description: In the 7-GeV Advanced Photon Source (APS) Conceptual Design Report (CDR), fifteen complete experimental beam lines were specified in order to establish a representative technical and cost base for the components involved. In order to optimize the composition of the insertion devices and the beam line, these funds are considered a ''Trust Fund.'' The present report evaluates the optimization for the distribution of these funds so that the short- and long-term research programs will be most produ… more
Date: February 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Performance of the Los Alamos expanding telescope

Description: An expanding telescope can produce a very low divergence particle beam, provided that the beam optics have sufficient quality in order not to introduce large aberrations. Even as late as two years ago there were no theoretical beamline codes, and little experimental work that could describe the third-order aberrations introduced by an expanding telescope. A project was undertaken at Los Alamos National Laboratory to perform these calculations, and to build a telescope to confirm the predictions… more
Date: January 1, 1988
Creator: Dombeck, T.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Accelerator and Fusion Research Division: 1987 summary of activities

Description: An overview of the design and the initial studies for the Advanced Light Source is given. The research efforts for the Center for X-Ray Optics include x-ray imaging, multilayer mirror technology, x-ray sources and detectors, spectroscopy and scattering, and synchrotron radiation projects. The Accelerator Operations highlights include the research by users in nuclear physics, biology and medicine. The upgrade of the Bevalac is also discussed. The High Energy Physics Technology review includes th… more
Date: April 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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PHOTON: A user's manual

Description: PHOTON has proven very useful in the development of the X17 superconducting wiggler beamline. Its use has determined the shielding required from the wiggler device to the very end of the beamline in the hutches and angiography section. Doses calculated by this program have been compared with experimental results from conventional bending magnet beamline with great success. In each case the program consistently overestimated the dose by factors ranging from 2 to 10. The reason for this overestim… more
Date: January 1, 1988
Creator: Chapman, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A high-fluence fusion neutron source

Description: A conceptual design of a D-T fusion facility for continuous production of 14-MeV neutron wall loading from 5 to 10 MW/m/sup 2/ at the plasma surface is presented. In this design, D-T neutrons are produced in a linear, two-component plasma formed by neutral beam irradiation of a fully ionized warm plasma target. The beam energy, which is deposited in the center, is transferred to the warm plasma mainly by electron drag and is conducted along the target plasma column to end regions where it is ab… more
Date: February 17, 1988
Creator: Coensgen, F. H.; Casper, T. A.; Correll, D. L.; Damm, C. C.; Futch, A. H.; Logan, B. G. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characteristics of the 7-GeV advanced photon source: A guide for users

Description: In this document we present the characteristics of the electromagnetic radiation from various types of sources on the 7-GeV Advanced Photon Source (APS) storage ring. The sources include bending magnets, undulators, and wigglers. The characteristics are compared with those of other synchrotron sources when operated at their design specifications. The influence of positron beam size on the on-axis brilliance is discussed, along with the power distribution from these sources. The goal of this doc… more
Date: February 1, 1988
Creator: Shenoy, G. K.; Viccaro, P. J. & Mills, D. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of undulators on the ALS: The early work on the LBL (Lawrence Berkeley Laboratory)

Description: In this paper we describe the early work carried out at LBL on the consequences of installing insertion devices (wigglers and undulators) on the beam dynamics of the ALS. This included analytical and tracking studies, and led to an insight to the reasons behind the predicted reduction in dynamic aperture. For completeness, a description of the unperturbed storage ring characteristics are also given. 3 refs., 16 figs., 2 tabs.
Date: May 1, 1988
Creator: Jackson, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Heavy Ion Fusion Accelerator Research (HIFAR) year-end report, October 1, 1987--March 31, 1988

Description: The basic objective of the Heavy Ion Fusion Accelerator Research (HIFAR) program is to assess the suitability of heavy ion accelerators as igniters for Inertial Confinement Fusion (ICF). A specific accelerator technology, the induction linac, has been studied at Lawrence Berkeley Laboratory and has reached the point at which its viability for ICF applications can be assessed over the next few years. The HIFAR program addresses the generation of high-power, high-brightness beams of heavy ions, t… more
Date: June 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of internal forces in superconducting accelerator magnets with strain gauge transducers

Description: An improved method has been developed for the measurement of internal forces in superconducting accelerator magnets, in particular the compressive stresses in coils and the end restraint forces on the coils. The transducers have been designed to provide improved sensitivity to purely mechanical strain by using bending mode deflections for sensing the applied loads. Strain gauge resistance measurements are made with a new system that eliminates sources of errors due to spurious resistance change… more
Date: January 1, 1988
Creator: Goodzeit, C. L.; Anerella, M. D. & Ganetis, G. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Proceedings of the international workshop on next-generation linear colliders

Description: This report contains papers on the next-generation of linear colliders. The particular areas of discussion are: parameters; beam dynamics and wakefields; damping rings and sources; rf power sources; accelerator structures; instrumentation; final focus; and review of beam-beam interaction.
Date: December 1, 1988
Creator: Riordan, M. (ed.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Free electron laser with small period wiggler and sheet electron beam: A study of the feasibility of operation at 300 GHz with 1 MW CW output power

Description: The use of a small period wiggler (/ell//sub ..omega../ < 1 cm) together with a sheet electron beam has been proposed as a low cost source of power for electron cyclotron resonance heating (ECRH) in magnetic fusion plasmas. Other potential applications include space-based radar systems. We have experimentally demonstrated stable propagation of a sheet beam (18 A. 1 mm /times/ 20 mm) through a ten-period wiggler electromagnet with peak field of 1.2 kG. Calculation of microwave wall heating and p… more
Date: January 1, 1988
Creator: Booske, J. H.; Granatstein, V. L.; Antonsen, T. M. Jr.; Destler, W. W.; Finn, J.; Latham, P. E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The design, fabrication, operation and maintenance of (41) 400 H. P. -600 SCFM helium screw compressor systems (Five-year operation report)

Description: Fermi National Accelerator Laboratory (Fermilab) uses thirty-four (34) identical compressor systems connected to a common header to supply clean high pressure helium gas feeding 26 refrigerators supplying liquid helium to 777 super conducting magnets. There are seven (7) similar compressor packages in other locations. The purpose of this paper is (after five years of operation) to present all the problems, modifications and experiences associated with the design and operation of these compresso… more
Date: December 1, 1988
Creator: Pallaver, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Annex to 7-GeV Advanced Photon Source Conceptual Design Report

Description: The Annex to the 7-GeV Advanced Photon Source Conceptual Design Report updates the Conceptual Design Report of 1987 (CDR-87) to include the results of further optimization and changes of the design during the past year. The design changes can be summarized as affecting three areas: the accelerator system, conventional facilities, and experimental systems. Most of the changes in the accelerator system result from inclusion of a positron accumulator ring (PAR), which was added at the suggestion o… more
Date: May 1, 1988
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some continuously variable partial snakes of Type 1 and Type 2

Description: In order to obtain polarized beam in proton accelerators, Siberian snakes of two types may be needed in order to establish a spin tune independent of energy. We have done a numerical study to find a type II partial snake and to find more exact solutions for the type I partial snakes previously proposed. We find a type II partial snake. We find that the unequal field integrals needed to modify approximate type I snakes to exactly type I snakes with horizontal and vertical bends result in unaccep… more
Date: November 30, 1988
Creator: Underwood, D.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Compact X-Ray Free Electron Laser

Description: We present a design concept and simulation of the performance of a compact x-ray, free electron laser driven by ultra-high gradient rf-linacs. The accelerator design is based on recent advances in high gradient technology by a LLNL/SLAC/LBL collaboration and on the development of bright, high current electron sources by BNL and LANL. The GeV electron beams generated with such accelerators can be concerted to soft x-rays in the range from 2--10 nm by passage through short period, high fields str… more
Date: September 9, 1988
Creator: Barletta, W.; Attac, M.; Cline, D.B.; Kolonko, J.; Wang, X.; Bhowmik, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Cryogenic techniques for large superconducting magnets in space

Description: A large superconducting magnet is proposed for use in a particle astrophysics experiment, ASTROMAG, which is to be mounted on the United States Space Station. This experiment will have a two-coil superconducting magnet with coils which are 1.3 to 1.7 meters in diameter. The two-coil magnet will have zero net magnetic dipole moment. The field 15 meters from the magnet will approach earth's field in low earth orbit. The issue of high Tc superconductor will be discussed in the paper. The reasons f… more
Date: December 1, 1988
Creator: Green, Michael A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Experiments with a synchrotron x-ray source and conventional, ECR, and storage-ring ion sources

Description: The present intensities of photon beams produced by synchrotron-radiation x-ray sources and of ion beams from conventional ion sources, electron-cyclotron resonance ion sources (ECRIS), and cooled heavy-ion storage rings (CHISR) make possible investigations of photoionization and photoexcitation processes that have not previously been feasible. An evaluation of the signal and background rates for experiments that employ the different types of ion sources is given here. 11 refs., 3 figs., 6 tabs. more
Date: January 1, 1988
Creator: Jones, K. W.; Johnson, B. M. & Meron, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TRACY: A tool for accelerator design and analysis

Description: A simulation code TRACY has been developed for accelerator design and analysis. The code can be used for lattice design work simulation of magnet misalignments, closed orbit calculations and corrections, undulator calculations and particle tracking. TRACY has been used extensively for single particle simulations for the Advanced Light Source (ALS), a 1-2 GeV Synchrotron Radiation Source now under construction at Lawrence Berkeley Laboratory. 9 refs., 2 figs.
Date: June 1, 1988
Creator: Nishimura, Hiroshi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Magnet systems for the International Thermonuclear Experimental Reactor

Description: The definition phase for the International Thermonuclear Experimental Reactor (ITER) has been nearly completed, thus beginning a three-year design effort by teams from the European Community (EC), Japan, US, and USSR. Preliminary parameters for the superconducting magnet system have been established to guide more detailed design work. Radiation tolerance of the superconductors and insulators has been important because it sets requirements for the neutron-shield dimension and sensitively influen… more
Date: September 22, 1988
Creator: Henning, C. D. & Miller, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Calculation of aberration coefficients up to sixth order of multipole focusing elements

Description: A method and a computer code have been developed to calculate the aberration coefficients, up to sixth order, for a focusing device consisting of magnetic or electric multipoles. The method is based on the calculation of the ray coordinates at the exit of a focusing device using the RAYTRACE code which provides the magnetic and electric multipole fields necessary for the integration of the equation of motion of the charged particles moving into the focusing device. Subsequently, the exit ray co… more
Date: 1988~
Creator: Tsoupas, N.; Enge, H. A. & Forest, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Insertion device vacuum system designs

Description: Synchrotron light source insertion device vacuum systems now in operation and systems proposed for the future are reviewed. An overview of insertion devices is given and four generic vacuum chamber designs, transition section design and pumping considerations are discussed. Examples of vacuum chamber systems are presented.
Date: May 1, 1988
Creator: Hoyer, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A tool for symmetry studies in circular machines

Description: The use of the C (mrad/Amp) conversion factors of the orbit corrector magnets in the sudy of the symmetry properties of a circular accelerator or storage ring, and in the determination of the ratios of the ..beta..-functions at corrector locations is discussed. Measurements obtained for the VUV and x-ray rings of the NSLS at Brookhaven National Laboratory are presented. 4 refs., 7 figs., 3 tabs.
Date: May 1, 1988
Creator: Bozoki, E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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