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Dynamic modeling of transport and positional control of tokamaks

Description: We describe here a numerical model of a free boundary axisymmetric tokamak plasma and its associated control systems. The plasma is modeled with a hybrid method using two-dimensional velocity and flux functions with surface-averaged MHD equations describing the evolution of the adiabatic invariants. Equations are solved for the external circuits and for the effects of eddy currents in nearby conductors. The method is verified by application to several test problems and used to simulate the form… more
Date: October 1, 1985
Creator: Jardin, S. C.; Pomphrey, N. & DeLucia, J.
Partner: UNT Libraries Government Documents Department
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Ion transport in stellarators

Description: Stellarator ion transport in the low-collisionality regime with a radial electric field is calculated by a systematic expansion of the drift-Boltzmann equation. The shape of the helical well is taken into account in this calculation. It is found that the barely trapped ions with three to four times the thermal energy give the dominant contribution to the diffusion. Expressions for the ion particle and energy fluxes are derived.
Date: September 1, 1985
Creator: Ho, D.D.M. & Kulsrud, R.M.
Partner: UNT Libraries Government Documents Department
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TRU Waste Management Program cost/schedule optimization analysis

Description: The cost/schedule optimization task is a necessary function to insure that program goals and plans are optimized from a cost and schedule aspect. Results of this study will offer DOE information with which it can establish, within institutional constraints, the most efficient program for the long-term management and disposal of contact handled transuranic waste (CH-TRU). To this end, a comprehensive review of program cost/schedule tradeoffs has been made, to identify any major cost saving oppor… more
Date: October 1, 1985
Creator: Detamore, J. A. (Rockwell International Corp., Albuquerque, NM (United States). Joint Integration Office); Raudenbush, M. H.; Wolaver, R. W. & Hastings, G. A. (Stoller (S.M.) Corp., Boulder, CO (United States))
Partner: UNT Libraries Government Documents Department
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Radiological assessment report for the Lansdowne property, 105-107 East Stratford Avenue, Lansdowne, Pennsylvania, October-December 1984

Description: Areas with elevated levels of radioactivity were found throughout both residences, as well as on the surrounding property. Contamination was also found in the garage behind the 105 East structure. The 105 East residence had substantially more contamination than the 107 East residence, as was expected. The chimneys, particularly the rear chimney, from the 105 East residence had extensive contamination, indicating that contaminated materials may have been burned at the site. The high background r… more
Date: September 1, 1985
Creator: Wynveen, R.A.; Smith, W.H.; Sholeen, C.M. & Flynn, K.F.
Partner: UNT Libraries Government Documents Department
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Mineralogy in the Waste Isolation Pilot Plant (WIPP) facility stratigraphic horizon

Description: Forty-six samples were selected for this study from two cores, one extending 50 ft up through the roof of the WIPP facility and the other penetrating 50 ft below the facility floor. These samples, selected from approximately every other foot of core length, represent the major lithologies present in the immediate vicinity of the WIPP facility horizon: ''clean'' halite, polyhalitic halite, argillaceous halite, and mixed polyhalitic-argillaceous halite. Samples were analyzed for non-NaCl mineralo… more
Date: September 1, 1985
Creator: Stein, C. L.
Partner: UNT Libraries Government Documents Department
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Evaluation of the gas production economics of the gas hydrate cyclic thermal injection model. [Cyclic thermal injection]

Description: The objective of the work performed under this directive is to assess whether gas hydrates could potentially be technically and economically recoverable. The technical potential and economics of recovering gas from a representative hydrate reservoir will be established using the cyclic thermal injection model, HYDMOD, appropriately modified for this effort, integrated with economics model for gas production on the North Slope of Alaska, and in the deep offshore Atlantic. The results from this e… more
Date: May 1, 1985
Creator: Kuuskraa, V.A.; Hammersheimb, E. & Sawyer, W.
Partner: UNT Libraries Government Documents Department
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TRU Waste Sampling Program: Volume II. Gas generation studies

Description: Volume II of the TRU Waste Sampling Program report contains the data generated from evaluating the adequacy of venting/filtering devices for maintaining safe hydrogen levels in plutonium contaminated waste drums. Additional studies reported in this volume include gas generation rates, selected waste form monitoring, and evaluation of hydrogen migration from sealed 90-mil rigid polyethylene drum liners containing /sup 238/Pu-contaminated wastes. All wastes used in the studies were newly-generate… more
Date: September 1, 1985
Creator: Clements, T.L. Jr. & Kudera, D.E.
Partner: UNT Libraries Government Documents Department
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Preliminary measurements of gamma ray effects on characteristics of broad-band GaAs field-effect transistor preamplifiers

Description: The effect of gamma radiation on electrical characteristics of cryogenically cooled broad-band low-noise microwave preamplifiers has been preliminarily evaluated. The change in the gain and noise figure of a 1-2 GHz preamplifier using GaAs microwave transistors was determined at gamma doses between 10/sup 5/ rad to 5 /times/ 10/sup 8/ rad. The gain and noise figure was measured at ambient temperatures of 300 K and 80 K. 8 refs., 2 figs.
Date: January 1, 1985
Creator: Jackson, H.G.; Shimizu, T.T. & Leskovar, B.
Partner: UNT Libraries Government Documents Department
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Bounce-averaged Fokker-Planck code for stellarator transport

Description: A computer code for solving the bounce-averaged Fokker-Planck equation appropriate to stellarator transport has been developed, and its first applications made. The code is much faster than the bounce-averaged Monte-Carlo codes, which up to now have provided the most efficient numerical means for studying stellarator transport. Moreover, because the connection to analytic kinetic theory of the Fokker-Planck approach is more direct than for the Monte-Carlo approach, a comparison of theory and nu… more
Date: July 1, 1985
Creator: Mynick, H.E. & Hitchon, W.N.G.
Partner: UNT Libraries Government Documents Department
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Assessment of government tribology programs

Description: An assessment has been made to determine current tribology research and development work sponsored or conducted by the government. Data base surveys and discussions were conducted to isolate current projects sponsored primarily by 21 different government organizations. These projects were classified by subject, objective, energy relevance, type of research, phenomenon being investigated, variables being studied, type of motion, materials and application. An abstract of each project was prepared… more
Date: September 1, 1985
Creator: Peterson, M.B. & Levinson, T.M.
Partner: UNT Libraries Government Documents Department
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Draft Transportation Institutional Plan

Description: The Department of Energy recognizes that the success of its program to develop and implement a national system for nuclear waste management and disposal depends on broad-based public understanding and acceptance. While each program element has its particular sensitivity, the transportation of the waste may potentially affect the greatest number of people, and accordingly is highly visible and potentially issue-laden. Therefore, the Office of Civilian Radioactive Waste Management has developed t… more
Date: September 1, 1985
Partner: UNT Libraries Government Documents Department
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Confinement scaling and ignition in tokamaks

Description: A drift wave turbulence model is used to compute the scaling and magnitude of central electron temperature and confinement time of tokamak plasmas. The results are in accord with experiment. Application to ignition experiments shows that high density (1 to 2) . 10/sup 15/ cm/sup -3/, high field, B/sub T/ > 10 T, but low temperature T approx. 6 keV constitute the optimum path to ignition.
Date: October 1, 1985
Creator: Perkins, F.W. & Sun, Y.C.
Partner: UNT Libraries Government Documents Department
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Trends in the study of light proton rich nuclei

Description: Recent work in light proton-rich nuclei is reviewed. Evidence for the first T/sub z/ = -5/2 nuclide, /sup 35/Ca, is presented. The mechanisms of two-proton emission following beta-decay is investigated. Future directions in this field are discussed. 23 refs., 5 figs. (WRF)
Date: September 1, 1985
Creator: Moltz, D. M.; Aysto, J.; Hotchkis, M. A. C. & Cerny, J.
Partner: UNT Libraries Government Documents Department
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TRU Waste Sampling Program: Volume I. Waste characterization

Description: Volume I of the TRU Waste Sampling Program report presents the waste characterization information obtained from sampling and characterizing various aged transuranic waste retrieved from storage at the Idaho National Engineering Laboratory and the Los Alamos National Laboratory. The data contained in this report include the results of gas sampling and gas generation, radiographic examinations, waste visual examination results, and waste compliance with the Waste Isolation Pilot Plant-Waste Accep… more
Date: September 1, 1985
Creator: Clements, T.L. Jr. & Kudera, D.E.
Partner: UNT Libraries Government Documents Department
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Business developments of nonthermal solar technologies

Description: Information on the developments of nonthermal solar technologies is presented. The focus is on the success of wind energy conversion systems (WECS) and photovoltaics. Detailed information on the installed generating capacity, market sectors, financing sources, systems costs and warranties of WECS and photovoltaic systems is summarized. (BCS)
Date: October 1, 1985
Creator: Smith, S.A.; Watts, R.L. & Williams, T.A.
Partner: UNT Libraries Government Documents Department
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Validation of KENO V. a. and two cross-section libraries for criticality calculations of low-enriched uranium systems

Description: The SCALE code system, utilizing the Monte Carlo computer code KENO V.a, was employed to calculate 37 critical experiments. The critical assemblies had /sup 235/U enrichments of 5% or less and cover a variety of geometries and materials. Values of k/sub eff/ were calculated using two different results using either of the cross-section libraries. The 16-energy-group Hansen-Roach and the 27-energy-group ENDF/B-IV cross-section libraries, available in SCALE, were used in this validation study, and… more
Date: July 1, 1985
Creator: Easter, M.E.
Partner: UNT Libraries Government Documents Department
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Solid modeling research at Lawrence Livermore National Laboratory: 1982-1985

Description: The Lawrence Livermore National Laboratory has sponsored solid modeling research for the past four years to assess this new technology and to determine its potential benefits to the Nuclear Weapons Complex. We summarize here the results of five projects implemented during our effort. First, we have installed two solid modeler codes, TIPS-1 (Technical Information Processing System-1) and PADL-2 (Part and Assembly Description Language), on the Laboratory's CRAY-1 computers. Further, we have exten… more
Date: September 1, 1985
Creator: Kalibjian, J. R.
Partner: UNT Libraries Government Documents Department
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Characterization of the solid, airborne materials created when UF/sub 6/ reacts with moist air flowing in single-pass mode

Description: A series of experiments has been performed in which UF/sub 6/ was released into flowing air in order to characterize the solid particulate material produced under non-static conditions. In two of the experiments, the aerosol was allowed to stagnate in a static chamber after release and examined further but in the other experiments characterization was done only on material collected a few seconds after release. Transmission electron microscopy and mass measurement by cascaded impactor were used… more
Date: October 1, 1985
Creator: Pickrell, P. W.
Partner: UNT Libraries Government Documents Department
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Extraction and recovery of plutonium and americium from nitric acid waste solutions by the TRUEX process - continuing development studies

Description: This report summarizes the work done to date on the application of the TRUEX solvent extraction process for removing and separately recovering plutonium and americium from a nitric acid waste solution containing these elements, uranium, and a complement of inert metal ions. This simulated waste stream is typical of a raffinate from a tributyl phosphate (TBP)-based solvent extraction process for removing uranium and plutonium from dissolved plutonium-containing metallurgical scrap. The TRUEX pro… more
Date: September 1, 1985
Creator: Leonard, R. A.; Vandegrift, G. F.; Kalina, D. G.; Fischer, D. F.; Bane, R. W.; Burris, L. et al.
Partner: UNT Libraries Government Documents Department
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TOPAZ - the transient one-dimensional pipe flow analyzer: code validation and sample problems

Description: TOPAZ is a ''user friendly'' computer code for modeling the one-dimensional-transient physics of multi-species gas transfer in arbitrary arrangements of pipes, valves, vessels, and flow branches. This document presents a series of sample problems designed to aid potential users in creating TOPAZ input files. To the extent possible, sample problems were selected for which analytical solutions currently exist. TOPAZ comparisons with such solutions are intended to provide a measure of code validat… more
Date: October 1, 1985
Creator: Winters, W.S.
Partner: UNT Libraries Government Documents Department
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Molten salt freeze seal. Final report

Description: This report documents the results of the testing performed at Sandia National Laboratory, Albuquerque, New Mexico, on the applicability of a sodium freeze seal type valve stem in a molten salt environment. The freeze seal tests consisted of cycling the valve stem at set temperature intervals, checking the temperature distribution for freeze plug location, and verifying the actuator forces. In addition to the test results, this report also documents the engineering analysis and other tasks perfo… more
Date: August 1, 1985
Creator: Corugedo, J.J.
Partner: UNT Libraries Government Documents Department
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DOE Site-Specific Threat Assessment

Description: A facility manager faced with the challenges of protecting a nuclear facility against potential threats must consider the likelihood and consequences of such threats, know the capabilities of the facility safeguards and security systems, and make informed decisions about the cost-effectivness of safeguards and security upgrades. To help meet these challenges, the San Francisco Operations Office of the Department of Energy, in conjunction with the Lawrence Livermore Laboratory, has developed a s… more
Date: July 12, 1985
Creator: West, D. J.; Al-Ayat, R. A. & Judd, B. R.
Partner: UNT Libraries Government Documents Department
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Energy conservation potential of surface modification technologies

Description: This report assesses the energy conservation impact of surface modification technologies on the metalworking industries. The energy conservation impact of surface modification technologies on the metalworking industries is assessed by estimating their friction and wear tribological sinks and the subsequent reduction in these sinks when surface modified tools are used. Ion implantation, coatings, and laser and electron beam surface modifications are considered.
Date: September 1, 1985
Creator: Le, H.K.; Horne, D.M. & Silberglitt, R.S.
Partner: UNT Libraries Government Documents Department
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SOLERAS - Solar Controlled Environment Agriculture Project. Final report, Volume 5. Science Applications, Incorporated system requirements definition

Description: This report sets forth the system requirements for a Solar Controlled-Environment Agriculture System (SCEAS) Project. In the report a conceptual baseline system description for an engineering test facility is given. This baseline system employs a fluid roof/roof filter in combination with a large storage tank and a ground water heat exchanger in order to provide cooling and heating as needed. Desalination is accomplished by pretreatment followed by reverse osmosis. Energy is provided by means o… more
Date: January 1, 1985
Partner: UNT Libraries Government Documents Department
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