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Conductor qualification tests for the 30-MJ Bonneville Power Administration SMES coil

Description: The 30-MJ energy storage coil for the Bonneville Power Administration requires a low-loss, cryostable conductor that is able to carry 4.9 kA in a field of 2.8 T and will maintain its properties over 10/sup 8/ partial discharge cycles. The multi-level cable which satisfies these requirements has been extensively tested at various stages in its development and in its final form. Tests have been performed to determine the effect of manufacturing options on ac losses, low temperature electrical res… more
Date: January 1, 1980
Creator: Schermer, R. I.; Boenig, H. J.; Henke, M.; Turner, R. D. & Schramm, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The U5. 0 undulator design for the advanced light source at LBL

Description: The U5.0 undulator, currently under design, is the first in a series of insertion devices planned for the Advanced Light Source at LBL. U5.0 parameters include a 5 cm period, 5 m length with a 0.837 T maximum field at a 14 mm gap. A hybrid configuration utilizing Nd-Fe-B permanent magnet material and Vanadium Permendur poles is used for the magnetic structure. Construction is modular with many pole assemblies attached to a pole mount, which in turn is fastened onto one of the backing beams. Ver… more
Date: August 1, 1989
Creator: Hoyer, E.; Chin, J.; Halbach, K.; Hassenzahl, W.; Humphries, D.; Kincaid, B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electron-beam envelopes and matching for a combined wiggler and alternating-gradient quadrupole channel

Description: This work studies the electron-beam envelopes and matching for a combined wiggler and alternating-gradient quadrupole field for a free-electron laser (FEL) that will be operated in the VUV or XUV wavelength region. The quadrupole field is assumed to vary continuously along the symmetry axis. The linearized equations of electron motion are solved analytically by using the two-scale perturbation method for a plane polarized wiggler. The electron-beam envelopes and the envelope equations, as well … more
Date: January 1, 1985
Creator: Wang, T. F. & Cooper, R. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Construction and testing of the Mirror Fusion Test Facility magnets

Description: This paper describes the construction and testing of the Mirror Fusion Test Facility superconducting magnet set. Construction of the first Yin Yang magnet was started in 1978. And although this particular magnet was later modified, the final construction of these magnets was not completed until 1985. When completed these 42 magnets weighed over 1200 tonnes and had a maximum stored energy of approximately 1200 MJ at full field. Together with power supplies, controls and liquid nitrogen radiation… more
Date: August 1, 1986
Creator: Kozman, T.; Shimer, D.; VanSant, J. & Zbasnik, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Multi-layer universal correction magnet

Description: This paper presents an approach for constructing a universal correction magnet in which the return currents play an active role in determining the field. The return currents are not hidden by the iron shield. The coil is wound in many layers, instead of just one layer. Each layer has a particular symmetry, and generates a particular class of field multipoles such that the location of the return current for each independently excited current block is clear. Three layers may be sufficient in many… more
Date: August 1, 1981
Creator: Parzen, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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H5 fast-kicker-magnet pulser

Description: The fast extraction kicker magnet for the AGS is powered by a novel pulse generator. A pulse forming network (PFN) is discharged into nearly 100% mismatched load. The pulser delivers a current pulse of 3000 amperes peak pulse with a 2% flat-top ripple into a 1.4 ..mu.. H single turn ferrite core magnet. The pulse is 2.8 ..mu..sec wide with a 180 nsec rise time, at a 0.5 to 1.5 pps repetition rate. The pulse rise time is required to provide clean extraction of the 28 GeV proton beam by bringing … more
Date: January 1, 1982
Creator: Frey, W.; Ghoshroy, S. & Cottingham, J.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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TPC magnet cryogenic system

Description: The Time Projection Chamber (TPC) magnet at LBL and its compensation solenoids are adiabatically stable superconducting solenoid magnets. The cryogenic system developed for the TPC magnet is discussed. This system uses forced two-phase tubular cooling with the two cryogens in the system. The liquid helium and liquid nitrogen are delivered through the cooled load by forced tubular flow. The only reservoirs of liquid cryogen exist in the control dewar (for liquid helium) and the conditioner dewar… more
Date: March 1, 1980
Creator: Green, M.A.; Burns, W.A.; Taylor, J.D. & Van Slyke, H.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effects of low-temperature fusion neutron irradiation on critical properties of a monofilament niobium-tin superconductor

Description: The objective of this work was to irradiate a Nb/sub 3/Sn superconductor with 14.8 MeV neutrons at 4 K and measure critical current in transverse fields of up to 12 T, irradiating up to a fluence sufficient to decrease the critical current to below its initial value. Critical temperatures were also to be measured. The samples were to be kept near 4 K between the irradiation and the measurement of critical properties. This work is directed toward establishing an engineering design fluence limit … more
Date: March 22, 1984
Creator: Guinan, M.W.; Van Konynenburg, R.A. & Mitchell, J.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Mirror fusion. Quarterly report, April-June 1981

Description: The information in each Quarterly is presented in the same sequence as in the Field Work Package Proposal and Authorization System (WPAS) submissions prepared for the U.S. Department of Energy; the main sections are Applied Plasma Physics, Confinement Systems, Development and Technology, and Mirror Fusion Test Facility (Planning and Projects). On occasion, we shall include information pertaining to the LLNL role as Lead Laboratory for the Open Systems Mirror Fusion Program. Each of these sectio… more
Date: September 11, 1981
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Some frontiers of accelerator physics

Description: 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)
Date: October 13, 1989
Creator: Sessler, A. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Wiggler, undulator, and free-electron laser-radiation sources development at the National Synchrotron Light Source

Description: An overview is presented of the special radiation sources development at the NSLS for incorporation in a 2.5 GeV X-ray storage ring and a 700 MeV vuv storage ring. This includes a superconducting high field multipole wiggler, lambda/sub c/ = 0.5A; a permanent magnet wiggler, lambda/sub c/ = 2.0A; a maximum photon energy undulator (5 to 7 keV); an undulator for a soft X-ray line or continuum spectrum and a free electron laser source tunable in the 2500 to 4500A region. Source characteristics and… more
Date: January 1, 1982
Creator: Hsieh, H.; Krinsky, S.; Luccio, A.; Pellegrini, C. & van Steenbergen, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Alternative dipole magnets for ISABELLE

Description: A dipole magnet, intended as a possible alternative for the ISABELLE main-ring magnet, was designed at LBL. Three layers of FNAL Doubler/Saver conductor were used. Two 1.3-m-long models were built and tested, both with and without an iron core, and in both helium I and helium II. The training behavior, cyclic energy loss, point of quench initiation, and quench velocity were determined. A central field of 6.5 tesla was obtained in He I (4.4 K), and 7.6 tesla in He II (1.8K).
Date: May 1, 1982
Creator: Taylor, C.; Althaus, R.; Caspi, S.; Gilbert, W.; Hassenzahl, W.; Meuser, R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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National Synchrotron Light Source and special radiation-sources development

Description: Design features are presented of the two high current electron storage rings comprising the National Synchrotron Light Source and its basic parameters are enumerated. In addition, an overview is presented of the special radiation sources under construction and development, including a superconducting wiggler, permanent magnet wiggler, x-ray and vuv undulators, free electron laser source and Compton backscattered ..gamma.. source.
Date: January 1, 1982
Creator: van Steenbergen, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of superconductors for applications in high-field, high-current-density magnets for fusion research

Description: The development of large-bore, high-field magnets for fusion energy applications requires a system approach to both magnet and conductor design. At Lawrence Livermore National Laboratory (LLNL), the criteria used to choose superconductors include: strain tolerance, radiation tolerance, heat removal, stability, fabricability, and cost. We report on the performance of industrially produced, prototype, Ti-modified Nb/sub 3/Sn wires developed with LLNL support. Wire performance characteristics eval… more
Date: September 26, 1986
Creator: Summers, L. T. & Miller, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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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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Cold iron cos THETA magnet option for the SSC

Description: We review first the evolution over the past several years of a cold iron, high field cos THETA magnet design option for the SSC. We note the collaborative approach pursued by BNL and LBL on the 2-in-1 option, and the culmination of this effort in the tests of the BNL 4.5 m model magnets. Next, we discuss the subsequent 1-in-1 option being pursued jointly by BNL, Fermilab and LBL.
Date: January 1, 1985
Creator: Reardon, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Spiral kicker for the beam abort system

Description: A brief study was carried out to determine the feasibility of a special kicker to produce a damped spiral beam at the beam dump for the beam abort system. There appears to be no problem with realizing this concept at a reasonably low cost.
Date: January 1, 1983
Creator: Martin, R.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Axicell MFTF-B superconducting-magnet system

Description: The Axicell MFTF-B magnet system will provide the field environment necessary for tandem mirror plasma physics investigation with thermal barriers. The performance of the device will stimulate DT to achieve energy break-even plasma conditions. Operation will be with deuterium only. There will be 24 superconducting coils consisting of 2 sets of yin-yang pairs, 14 central-cell solenoids, 2 sets of axicell mirror-coil pairs, and 2 transition coils between the axicell mirror coil-pairs and the yin-… more
Date: May 5, 1982
Creator: Wang, S. T.; Bulmer, R.; Hanson, C.; Hinkle, R.; Kozman, T.; Shimer, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Status of Oak Ridge National Laboratory fusion activities

Description: This review covers the following research being carried out at ORNL: (1) confinement experiments such as ATF, EBT, and STX, (2) theory, (3) atomic physics, (4) shielding, (5) technology developments on superconducting magnets, pellet injection, rf plasma heating, and materials, and (6) fusion engineering design center. (MOW)
Date: January 1, 1985
Creator: Rosenthal, M.W.
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Partner: UNT Libraries Government Documents Department
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Electron beam and high-speed optical diagnostics for the Los Alamos HIBAF (High Brightness Accelerator FEL) Facility

Description: Characterization of the electron beam's properties will be a major task after the upgrade of the Los Alamos Free-Electron Laser (FEL) Facility with a photoelectric injector (PEI) and increased acceleration capability to 40 MeV. Adjustments to the previous diagnostics package that address the lower beam emittance, higher energy, and wakefield source reduction issues will be discussed. 6 refs., 8 figs., 1 tab.
Date: January 1, 1989
Creator: Lumpkin, A. H.; Cornelius, W. D.; Stein, W. E.; Feldman, R. B.; Meier, K. L. & Young, L. M.
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Partner: UNT Libraries Government Documents Department
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Injection septum magnets for the Loma Linda medical accelerator

Description: The injection beamline runs over the last magnet before a long straight section and is then displaced downward 55.88 cm to the accelerator beamline. The displacement is magnetic and the final deflection onto the synchrotron orbit is by an electric kicker. The first component, the reverse septum magnet, bends the injection beam 25)degree) downward. This is followed by the injection septum (20)degree) bend upward) and the final injection kicker (5)degree) bend upward). The septum magnets produce … more
Date: September 22, 1987
Creator: Satti, J.A.
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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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High-field superconducting accelerator magnets

Description: The next generation of accelerators for high-energy physics will require high-field, small-bore dipole magnets: in the region of 10 T and 40-mm diam. For such magnets, there is a great incentive to attain high overall current density through increasing the current density within the superconductor and minimizing the copper stabilizer. Both Nb-Ti operating at 1.8 K and Nb/sub 3/sn at 4.2 are candidate superconductors. Two programs in the US and one in Japan are directed toward the development of… more
Date: May 1, 1982
Creator: Taylor, C.; Meuser, R.; Caspi, S.; Gilbert, W.; Hassenzahl, W.; Peters, C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Two phase cooling for superconducting magnets

Description: A closed circuit tubular cooling system for superconducting magnets offers advantages of limiting boiloff and containing high pressures during quenches. Proper location of automatic valves to lower pressures and protect the refrigerator in the event of quenches is described. Theoretical arguments and exprimental evidence are given against a previously suggested method to determine He two phase flow regimes. If loss of flow occurs due to some types of refrigeration failure and transfer lines hav… more
Date: August 1, 1985
Creator: Eberhard, P. H.; Gibson, G. A.; Green, M. A.; Ross, R. R.; Smits, R. G.; Taylor, J. D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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