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Software for the ACP (Advanced Computer Program) multiprocessor system

Description: Software has been developed for use with the Fermilab Advanced Computer Program (ACP) multiprocessor system. The software was designed to make a system of a hundred independent node processors as easy to use as a single, powerful CPU. Subroutines have been developed by which a user's host program can send data to and get results from the program running in each of his ACP node processors. Utility programs make it easy to compile and link host and node programs, to debug a node program on an ACP… more
Date: February 2, 1987
Creator: Biel, J.; Areti, H.; Atac, R.; Cook, A.; Fischler, M.; Gaines, I. et al.
Partner: UNT Libraries Government Documents Department
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Wavelengths of the 3p-3d transitions of the Co- and Fe-like ions: The effects of electron correlation

Description: The experimental observations of the 3p/sup 6/ 3d/sup 9/ /sup 2/D - 3p/sup 5/ 3d/sup 10/ /sup 2/p transitions of the Co-like ions and 3p/sup 6/ 3d/sup 8/ /sup 3/F/sub 4/ - 3p/sup 5/ 3d/sup 9/ /sup 3/F/sub 3/ of the Fe-like ions have recently been extended to highly charged ions of heavy elements up to uranium (Z = 92). A comparison between the observed energies and calculated values from the Dirac-Fock model indicated persistent discrepancies of 3 to 4 eV for all ions. Systematic multiconfigura… more
Date: September 2, 1987
Creator: Chen, Mau Hsiung
Partner: UNT Libraries Government Documents Department
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Is CR39 worth the effort

Description: CR39 proton sensitive track detectors were greeted by the radiation protection community at the end of the last decade as a major breakthrough for personnel neutron dosimetry. A number of laboratories eagerly began research on application of CR39 to their dosimetry needs. However, in the last two or three years the enthusiasm has subsided, and many health physicists have stopped working with the material. The number of participants using CR39 in the Oak Ridge National Laboratory Personnel Inter… more
Date: December 2, 1987
Creator: Griffith, R.V.
Partner: UNT Libraries Government Documents Department
open access

Review of the state of the art in personnel neutron monitoring with solid state detectors

Description: Albedo systems are the mainstay at many facilities and continue to be refined. Advanced electrochemical etching techniques for CR-39 now yield a dose equivalent response that is nearly constant from 0.1 to 4.0 MeV. Recent studies include use of converters to enhance CR-39 response at both low and high energies. Methods have been suggested for use of CR-39, either alone or in conjunction with albedo and other detectors to provide spectral information as a step to more accurate dosimetry. Limitat… more
Date: October 2, 1987
Creator: Griffith, R.V.
Partner: UNT Libraries Government Documents Department
open access

Neutron scattering from charged polymer lattices

Description: Aqueous suspensions of charged polymer latex particles exhibit several forms of ordered structure, the particular form depending on the size, number density and charge of the latex particles, and on the ionic strength of the aqueous medium. At low ionic strength, the inter-particle potential may become sufficiently long-ranged to generate crystalline order, which usually shows bcc symmetry at low density and becomes fcc above about 3% volume fraction of latex in the system. As the ionic strengt… more
Date: December 2, 1987
Creator: Hayter, J. B.
Partner: UNT Libraries Government Documents Department
open access

Superconducting magnets for fusion applications

Description: Fusion magnet technology has made spectacular advances in the past decade; to wit, the Mirror Fusion Test Facility and the Large Coil Project. However, further advances are still required for advanced economical fusion reactors. Higher fields to 14 T and radiation-hardened superconductors and insulators will be necessary. Coupled with high rates of nuclear heating and pulsed losses, the next-generation magnets will need still higher current density, better stability and quench protection. Cable… more
Date: July 2, 1987
Creator: Henning, C. D.
Partner: UNT Libraries Government Documents Department
open access

Design issues for a laboratory high gain fusion facility

Description: In an inertial fusion laboratory high gain facility, experiments will be carried out with up to 1000 MJ of thermonuclear yield. The experiment area of such a facility will include many systems and structures that will have to operate successfully in the difficult environment created by the sudden large energy release. This paper estimates many of the nuclear effects that will occur, discusses the implied design issues and suggests possible solutions so that a useful experimental facility can be… more
Date: November 2, 1987
Creator: Hogan, W.J.
Partner: UNT Libraries Government Documents Department
open access

OCR vision system, an alternative to bar code

Description: This report describes optical character reader system advantages and applications. Comparisons are made to bar code readers. (JDH)
Date: November 2, 1987
Creator: Leader, D R
Partner: UNT Libraries Government Documents Department
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TIBER II/ETR (Engineering Test Reactor) nuclear shielding and optional tritium breeding system: An overview

Description: TIBER II, the Tokamak Ignition/Burn Experimental Reactor II, is a design concept developed as the US candidate for an International Engineering Test Reactor (ETR). An important objective of this design is to minimize cost by minimizing major radius while providing a wall loading greater than 1.0 MW/m2 and a total fluence greater than 3.0 MWY/m2 needed for blanket module testing. The shielding required for the superconducting TF coils is an important element in setting TIBER II's 3.0m major radi… more
Date: November 2, 1987
Creator: Lee, J. D. & Sawan, M.
Partner: UNT Libraries Government Documents Department
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Practical applications of coherent transition radiation

Description: The predictable nature of transition radiation (TR) emissions has been demonstrated under a wide variety of experimental conditions. The reliable character of TR allows the design of specific practical applications that use emissions from the optical to the x-ray spectral regions. Applications often can be enhanced by the spatial coherence of TR, and some have become highly developed. New applications may be developed through the use of other related radiation mechanisms. 20 refs., 3 figs.
Date: October 2, 1987
Creator: Moran, M. J.
Partner: UNT Libraries Government Documents Department
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The VISTA spacecraft: Advantages of ICF (Inertial Confinement Fusion) for interplanetary fusion propulsion applications

Description: Inertial Confinement Fusion (ICF) is an attractive engine power source for interplanetary manned spacecraft, especially for near-term missions requiring minimum flight duration, because ICF has inherent high power-to-mass ratios and high specific impulses. We have developed a new vehicle concept called VISTA that uses ICF and is capable of round-trip manned missions to Mars in 100 days using A.D. 2020 technology. We describe VISTA's engine operation, discuss associated plasma issues, and descri… more
Date: October 2, 1987
Creator: Orth, C.D.; Klein, G.; Sercel, J.; Hoffman, N.; Murray, K. & Chang-Diaz, F.
Partner: UNT Libraries Government Documents Department
open access

Ion-cyclotron instability in magnetic mirrors

Description: This report reviews the role of ion-cyclotron frequency instability in magnetic mirrors. The modes discussed here are loss-cone or anisotropy driven. The discussion includes quasilinear theory, explosive instabilities of 3-wave interaction and non-linear Landau damping, and saturation due to non-linear orbits. (JDH)
Date: February 2, 1987
Creator: Pearlstein, L.D.
Partner: UNT Libraries Government Documents Department
open access

The Microwave Tokamak Experiment (MTX)

Description: A new experimental facility is being assembled at the Lawrence Livermore National Laboratory (LLNL) for studying microwave propagation and absorption in high density plasmas. A unique feature of the facility is the free electron laser (FEL) used to generate high peak power microwaves at 250 GHz, at a repetition rate so as to produce up to 2 MW of average power for up to 30 s. Called the Microwave Tokamak Experiment (MTX), the facility will be used for studies of plasma heating, current drive, a… more
Date: October 2, 1987
Creator: Thomassen, K. I.; Cohen, B. I.; Hooper, E. B.; Lang, D. D. & Nevins, W. M.
Partner: UNT Libraries Government Documents Department
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