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Implicit Plasma Simulation

Description: Implicit time integration methods have been used extensively in numerical modelling of slowly varying phenomena in systems that also support rapid variation. Examples include diffusion, hydrodynamics and reaction kinetics. This article discussed implementation of implicit time integration in plasma codes of the ''particle-in-cell'' family, and the benefits to be gained.
Date: March 3, 1985
Creator: Langdon, A. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Plasma engineering models of tandem mirror devices with high-field test-cell inserts

Description: Plasma physics and engineering models of tandem mirror devices operated with a high-field technology test-cell insert in the central cell, which have been incorporated recently in the TMRBAR tandem mirror reactor physics code, are described. The models include particle and energy balance in the test-cell region as well as the interactions between the test-cell particles and those flowing through the entire device. The code calculations yield consistent operating parameters for the test-cell, ce… more
Date: April 3, 1985
Creator: Fenstermacher, M.E. & Campbell, R.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Hance]

Description: Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story about Texas Senator Kent Hance who switched from the Democrat to Republican Party. This footage shows a press conference with Hance. This story aired at 6:00 P.M.
Date: May 3, 1985
Duration: 1 minute 12 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Denton Hearing]

Description: Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany news story about a custody ruling. This b-roll footage shows a courtroom scene and children leaving the courthhouse with press taking photographs. This story aired at 10:00 P.M.
Date: May 3, 1985
Duration: 54 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Texas Snow]

Description: Video footage from the WBAP-TV station in Fort Worth, Texas, to accompany a news story about a snow storm in Texas. This b-roll footage shows car accidents and emergency respondents. This story aired at 10:00 P.M.
Date: February 3, 1985
Duration: 46 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

TS-1 and TS-2 Transient Overpower Tests on FFTF Fuel

Description: The TS-1 and TS-2 TREAT transient experiments subjected a low burnup (2 MWd/kg) and a medium burnup (58 MWd/kg), respectively, FFTF irradiated fuel pin to unprotected 5 cents/s overpower transient conditions. The fuel pin failure response was similar in the two tests, which demonstrated a large margin to failure (P/P/sub 0/ > 3) and a favorable upper level failure location. Thus, for these transient conditions, burnup effects on transient performance appeared to be minimal in the range tested. … more
Date: October 3, 1985
Creator: Pitner, A. L.; Ferrell, P. C.; Culley, G. E. & Weber, E. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modeling and optimization of a test-cell upgrade for MFTF-B operating in the high neutron wall loading mode

Description: Models of the plasma particle and power balances in a tandem mirror with a high-field test-cell insert in the central cell have been used to calculate operating points for test-cell upgrades of the MFTF-B configuration. The code results have been benchmarked against the proposal plasma parameters for the MFTF-..cap alpha..+T configuration operating in the high neutron wall loading mode. Some parametric studies have been done. Using the results from these parametrics an optimized set of operatin… more
Date: April 3, 1985
Creator: Fenstermacher, M.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modeling and optimization of operating parameters for a test-cell option of the Fusion Power Demonstration-II tandem mirror design

Description: Models of tandem mirror devices operated with a test-cell insert have been used to calculate operating parameters for FPD-II+T, an upgrade of the Fusion Power Demonstration-II device. Two test-cell configurations were considered, one accommodating two 1.5 m blanket test modules and the other having four. To minimize the cost of the upgrade, FPD-II+T utilizes the same coil arrangement and machine dimensions outside of the test cell as FPD-II, and the requirements on the end cell systems have bee… more
Date: April 3, 1985
Creator: Haney, S.W. & Fenstermacher, M.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Terrain-Responsive Atmospheric Code (TRAC) for plume growth and dispersion in complex terrain

Description: Use of atmospheric dispersion models to assess pollutant impacts in complex terrain is increasing. However, the temporally and spatially varying wind and turbulence fields in mountainous areas often invalidate the assumptions of straight-line flow and horizontal homogeneity inherent in standard plume models. A dispersion model was recently developed at the Rocky Flats Plant to realistically simulate dispersion processes in complex terrain. The new model treats pollutant releases as a series of … more
Date: April 3, 1985
Creator: Hodgin, C.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Review of TAC superferric magnet

Description: The studies reported here include conductor current level optimizations at 0.15 T, 2.0 T, 3.0 T, and 3.25 T, maximum conductor fields at 3.25 T, sensitivity of field quality to variations in the magnetic shunt, and effects of up-down asymmetries. This design is characterized by a magnetic shunt which separates the aperture from the primary coils. The current in the three coils, labeled I/sub c'/ I/sub in'/ and I/sub out'/ may be individually controlled. Two configurations of the trim coil, labe… more
Date: September 3, 1985
Creator: Marks, S. & Humphries, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hybrid simulation codes with application to shocks and upstream waves

Description: Hybrid codes in which part of the plasma is represented as particles and the rest as fluid are discussed. In the past few years such codes with particle ions and massless, fluid electrons have been applied to space plasmas, especially to collisionless shocks. All of these simulation codes are one-dimensional and similar in structure, except for how the field equation are solved. We describe in detail the various approaches that are used (resistive Ohm's law, predictor-corrector, Hamiltonian) an… more
Date: February 3, 1985
Creator: Winske, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Identifying heavy-ion-beam fusion design and system features with high economic leverage

Description: We have conducted parametric economic studies for heavy-ion-beam fusion electric power plants. We examined the effects on the cost of electricity of several design parameters: maximum achievable chamber pulse rate, driver cost, target gain, and electric conversion efficiency, and net electric power. We found with reasonable assumptions on driver cost, target gain, and electric conversion efficiency, a 2 to 3 GWe heavy-ion-beam fusion power plant, with a chamber pulse rate of 5 to 10 Hz, can be … more
Date: March 3, 1985
Creator: Meier, W. R. & Hogan, W. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High Resolution Spectrometer in studies of e/sup +/e/sup -/ annihilation at. sqrt. s = 29 GeV

Description: The High Resolution Spectrometer is a general-purpose spectrometer which measures both charged particles and electromagnetic energy over 90% of the solid angle. The detection elements are in a 1.62-T magnetic field. The detector elements consist of a central drift chamber, an outer drift-chamber system, a barrel shower counter, and an end-cap shower-counter system. The goals of the program of research with the High Resolution Spectrometer include measurements of the electroweak coupling of the … more
Date: May 3, 1985
Creator: Derrick, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Plasma engineering for MINIMARS: a small commercial tandem mirror reactor with octopole plugs

Description: With the employment of a novel octopole end plug scheme, we examine the plasma engineering design of MINIMARS, a small compact fusion reactor based on the tandem mirror principle. With a net electric output of 600 MW/sub e/, MINIMARS is expressly designed for short construction times, factory built modules, and a passively safe blanket system. We show that the compact octopole/mantle provides several distinct improvements over the more conventional quadrupole (yin-yang) end plugs and enables ig… more
Date: April 3, 1985
Creator: Perkins, L. J.; Logan, B. G.; Campbell, R. B. Devoto, R.S.; Blackfield, D. T. & Johnston, B. H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Shell model calculations of /sup 90,88/Zr and /sup 90,88/Y

Description: Conventional spherical shell model calculations have been undertaken to describe /sup 90,88/Zr and /sup 90,88/Y. In these large scale calculations valence orbitals included 1f/sub 5/2/,2p/sub 3/2/,2p/sub 1/2/, and 1g/sub 9/2/. The d/sub 5/2/ orbital was included for /sup 90/Y and for high-spin calculations in /sup 90/Zr. Restrictions were placed on orbital occupancy so that the basis set amounted to less than 25,000 Slater determinants. Calculations were done with a local, state independent, tw… more
Date: September 3, 1985
Creator: Becker, J. A. & Bloom, S. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electron beam brightness with field immersed emission

Description: The beam quality or brightness of an electron beam produced with field immersed emission is studied with two models. First, an envelope formulation is used to determine the scaling of brightness with current, magnetic field and cathode radius, and examine the equilibrium beam radius. Second, the DPC computer code is used to calculate the brightness of two electron beam sources.
Date: December 3, 1985
Creator: Boyd, J.K. & Neil, V.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Taylor sidebar]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 3, 1985, 6:00 p.m.
Duration: 1 minute 41 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Parkland update list]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 3, 1985
Duration: 1 minute 09 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: School woes]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 3, 1985
Duration: 1 minute 53 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Homicide arrest]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: March 3, 1985
Duration: 1 minute 10 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Von Erich condition]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: September 3, 1985
Duration: 58 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Survivor reunion]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 3, 1985
Duration: 2 minutes 07 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: NTSB]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: August 3, 1985
Duration: 1 minute 50 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
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