Office of Scientific & Technical Information Technical Reports - 24 Matching Results

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Advanced Test Accelerator (ATA) pulse power technology development

Description: The Advanced Test Accelerator (ATA) is a pulsed linear induction accelerator with the following design parameters: 50 MeV, 10 kA, 70 ns, and 1 kHz in a ten-pulse burst. Acceleration is accomplished by means of 190 ferrite-loaded cells, each capable of maintaining a 250 kV voltage pulse for 70 ns across a 1-inch gap. The unique characteristic of this machine is its 1 kHz burst mode capability at very high currents. This paper dscribes the pulse power development program which used the Experiment… more
Date: March 9, 1981
Creator: Reginato, L.L.; Branum, D. & Cook, E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Application of microfabrication technology to thermionic energy conversion. Progress report No. 6, November 1, 1980-January 31, 1981

Description: Effort was directed toward the fabrication of a micron-spaced thermionic converter diode. This technique demonstrated that interelectrode spacings down to 1.5 ..mu..m could be obtained. Several methods of duplicating the emitter and collector surfaces were also investigated. Two new techniques are proposed; both stem from an earlier idea of using evaporation, photolithography, and etching techniques. These two fabrication methods yielded a one-piece diode structure with a thick-film copper coll… more
Date: March 9, 1981
Creator: Brodie, I.; Shepherd, C. & Spindt, C.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Design and test of-80 kV snubber core assemblies for MFTF sustaining-neutral-beam power supplies

Description: Core snubbers, located near the neutral beam source ends of the Mirror Fusion Test Facility (MFTF) Sustaining Neutral Beam Power Supply System (SNBPSS) source cables, protect the neutral beam source extractor grid wires from overheating and sputtering during internal sparkdowns. The snubbers work by producing an induced counter-emf which limits the fault current and by absorbing the capacitive energy stored on the 80 kV source cables and power supplies. A computer program STACAL was used in snu… more
Date: October 9, 1981
Creator: Bishop, S. R.; Mayhall, D. J.; Wilson, J. H.; De Vore, K. R.; Ross, R. I. & Sears, R. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design, fabrication, and testing of the magnet liner supports for the Mirror Fusion Test Facility

Description: Heat is radiated from both the vacuum vessel that houses the magnet and the heated plasma that exists at the central region of the magnets. Approximately 30 kW of heat will be transmitted to the 311 m/sup 2/ of magnet surface area from these two heat sources. We can reduce this heat load substantially by installing liquid nitrogen (LN)-filled panels around the magnets to counteract the 300/sup 0/K vessel wall temperature. When flowing the LN inside the panels, the temperature drops to 85/sup 0/… more
Date: October 9, 1981
Creator: Chang, Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Design of 12-T Yin-Yang magnets operating in subcooled, superfluid helium. [Nb-Ti and Nb/sub 3/Sn]

Description: A conceptual design study of a large 12-T yin-yang pair of coils, typical of the plug coils envisioned for a tandem-mirror facility to follow MFTF, has been completed. Because of its larger size and field strength, the magnetic forces are much greater than those experienced on MFTF. The main purpose of this study, therefore, is to assess the feasibility of such a device, paying particular attention to mechanical stress and conductor strain. The conductor proposed operates at 15.6 kA and consist… more
Date: October 9, 1981
Creator: Cornish, D. N.; Hoard, R. W. & Baldi, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Gasification research on wood grow project

Description: The GROW (Gasification Research on Wood) project consists of a research project on thermochemical degradation of wood particles (sawdust or hammermilled wood) on a pilot plant scale and utilizes a 100 cm (40 in.) diameter fluidized sand bed reactor at capacities of up to 1000 Kg/Hr (2200 lb/hr). Supplementary facilities include wood preparation and air conveying, a wood feed bin, feed and transfer screws, an air compressor with storage and filter tanks, an electrical preheater, a propane-fired … more
Date: January 9, 1981
Creator: Flanigan, V J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Geothermal reservoir insurance study. Final report

Description: The principal goal of this study was to provide analysis of and recommendations on the need for and feasibility of a geothermal reservoir insurance program. Five major tasks are reported: perception of risk by major market sectors, status of private sector insurance programs, analysis of reservoir risks, alternative government roles, and recommendations.
Date: October 9, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Head assembly for multiposition borehole extensometer

Description: A head assembly for a borehole extensometer and an improved extensometer for measuring subsurface subsidence. A plurality of inflatable anchors provide discrete measurement points. A metering rod is fixed to each of the anchors which are displaced when subsidence occurs, thereby translating the attached rod. The head assembly includes a sprocket wheel rotatably mounted on a standpipe and engaged by a chain which is connected at one end to the metering rod and at the other end to a counterweight… more
Date: June 9, 1981
Creator: Frank, D.N.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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High-temperature electrically conductive ceramic composite and method for making same

Description: The present invention relates to a metal-oxide ceramic composition useful in induction heating applications for treating uranium and uranium alloys. The ceramic composition is electrically conductive at room temperature and is nonreactive with molten uranium. The composition is prepared from a particulate admixture of 20 to 50 vol. % niobium and zirconium oxide which may be stabilized with an addition of a further oxide such as magnesium oxide, calcium oxide, or yttria. The composition is prepa… more
Date: June 9, 1981
Creator: Beck, D.E.; Gooch, J.G.; Holcombe, C.E. Jr. & Masters, D.R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Human factors engineering control-room-design review/audit report: Palo Verde Nuclear Generating Station, Arizona Public Service Company

Description: A human factors engineering design review of the Palo Verde control room simulator was performed at the site on September 15 through September 17, 1981. Observed human factors design discrepancies were given priority ratings. This report summarizes the team's observations of the control room design and layout and of the control room operators' interface with the control room environment. A list of the human factors strengths observed in the Palo Verde control room simulator is given.
Date: October 9, 1981
Creator: Savage, J.W. & Lappa, D.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Human factors engineering control room design review technical evaluation report: Callaway Plant Unit 1

Description: This report identified human engineering discrepancies (HEDs) in Callaway-1. It was found that overall the systems reviewed were designed to permit effective and efficient operator actions. The applicant's proposed resolutions of the HEDs are acceptable to the Human Factors Engineering Branch (HFEB) staff. Because of the large number of systems not available for evaluation during the HFEB site visit, a second visit will be required. (DLC)
Date: September 9, 1981
Creator: Preston, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrothermal energy development projects

Description: The development of hydrothermal energy for direct heat applications is being accelerated by twenty-two demonstration projects that are funded on a cost-sharing basis by the US Department of Energy, Division of Geothermal Energy. These projects are designed to demonstrate the technical and economic feasibility of the direct use of hydrothermal resources in the United States. Engineering and economic data for the projects are summarized. The data and experience being generated by these projects w… more
Date: March 9, 1981
Creator: DiBello, E.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LLNL Underground-Coal-Gasification Project. Quarterly progress report, July-September 1981

Description: We have continued our laboratory studies of forward gasification in small blocks of coal mounted in 55-gal drums. A steam/oxygen mixture is fed into a small hole drilled longitudinally through the center of the block, the coal is ignited near the inlet and burns toward the outlet, and the product gases come off at the outlet. Various diagnostic measurements are made during the course of the burn, and afterward the coal block is split open so that the cavity can be examined. Development work con… more
Date: November 9, 1981
Creator: Stephens, D.R. & Clements, W. (eds.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Magnet and conductor developments for the Mirror Fusion Program

Description: The conductor development and the magnet design and construction for the MFTF are described. Future plans for the Mirror Program and their influence on the associated superconductor development program are discussed. Included is a summary of the progress being made to develop large, high-field, multifilamentary Nb/sub 3/Sn superconductors and the feasibility of building a 12-T yin-yang set of coils for the machine to follow MFTF. In a further look into the future, possible magnetic configuratio… more
Date: October 9, 1981
Creator: Cornish, D.N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Magnetron co-sputtering system for coating ICF targets

Description: Fabrication of Inertial Confinement Fusion (ICF) targets requires deposition of various types of coatings on microspheres. The mechanical strength, and surface finish of the coatings are of concern in ICF experiments. The tensile strength of coatings can be controlled through grain refinement, selective doping and alloy formation. We have constructed a magnetron co-sputtering system to produce variable density profile coatings with high tensile strength on microspheres. The preliminary data on … more
Date: December 9, 1981
Creator: Hsieh, E. J.; Meyer, S. F.; Halsey, W. G.; Jameson, G. T. & Wittmayer, F. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Magnetron co-sputtering system for coating ICF targets

Description: Fabrication of Inertial Confinement Fusion (ICF) targets requires deposition of various types of coatings on microspheres. The mechanical strength, and surface finish of the coatings are of concern in ICF experiments. The tensile strength of coatings can be controlled through grain refinement, selective doping and alloy formation. We have constructed a magnetron co-sputtering system to produce variable density profile coatings with high tensile strength on microspheres.
Date: September 9, 1981
Creator: Hsieh, E. J.; Meyer, S. F.; Halsey, W. G.; Jameson, G. T. & Wittmayer, F. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutron-source characterization and radiation-damage calculations for material studies

Description: In our quest to understand radiation damage in materials, it is vital that we characterize radiation sources in terms of neutron flux and spectra as well as the more-fundamental displacement damage, gas production, and transmutation rates. Such data are crucial to correlations of materials-property changes in different environments and to predictions of materials performance in inaccessible environments, such as fusion reactors. Dosimetry techniques have been developed to measure the neutron fl… more
Date: November 9, 1981
Creator: Greenwood, L.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Personnel neutron dosimetry studies at the Lawrence Livermore National Laboratory

Description: A study was conducted to determine the effect of phantom size, shape and composition on the response of an albedo neutron dosimeter. The most important feature was the shape. The dose equivalent rate from a californium neutron source was determined. Ten different dose rates were determined which varied from 2.39 to 3.02 rem/h for the CF source used. (ACR)
Date: June 9, 1981
Creator: Hankins, D.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Preliminary plan for the development of geothermal energy in the town of Gabbs, Nevada

Description: Characteristics of the site significant to the prospect for geothermal development are described, including: physiography, demography, economy, and the goals and objectives of the citizens as they relate to geothermal development. The geothermal resource evaluation is described, including the depth to reservoir, production rates of existing water wells, water quality, and the resource temperature. Uses of the energy that seem appropriate to the situation both now and in the foreseeable future a… more
Date: November 9, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary plan for the development of geothermal energy in the town of Gabbs, Nevada

Description: The results of the analyses as well as a plan for geothermal development are described. The major findings and specific barriers to development that would have to be addressed are identified. Characteristics of the site significant to the prospect for geothermal development are described. These characteristics include physiography, demography, economy, and the goals and objectives of the citizens as they would relate to geothermal development. The geothermal resource evaluation is described. Ba… more
Date: November 9, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Review and evaluation of NASAP proliferation assessment activities. Final report

Description: Assessing proliferation resistance of nuclear power alternatives was central to the Nonproliferation Alternative System Assessment Program (NASAP). Assessment efforts were made by several organizations associated with NASAP. These efforts produced papers and documents which assisted the NASAP program understand the many facets of the proliferation problem and carry out its responsibilities of providing R and D guidance. This report briefly reviews these papers to document the chronology of the … more
Date: January 9, 1981
Creator: Hammelman, J. E. & Outlaw, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study and analysis of selected legal, institutional, and public-policy problems effecting hydrothermal geothermal commercialization in the five Pacific Rim States. Final technical report

Description: Summaries and updates of sixteen technical reports issued on this project are included. They cover: in depth analyses of the Federal land management-related problems present at major target prospect KGRA's throughout the Pacific Rim States; financial incentives; transmission line access; substantive environmental requirements in air, water, and solid wastes; water law; and the geothermal-impacting activities of the legislative and regulatory agencies of the State of California. (MHR)
Date: July 9, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tensile properties of 20% cold-worked titanium-modified type 316 stainless steel irradiated in HFIR

Description: An alloy of type 316 stainless steel with the addition of 0.23% Ti (316 + Ti) has been irradiated in the 20% cold-worked condition in the HFIR (a mixed fast and thermal neutron spectrum reactor) and tested near the irradiation temperature in the range of 300 to 600/sup 0/C. Tensile tests were performed following irradiation to fluence levels of 0.63 to 2.1 x 10/sup 26/ n/m/sup 2/ (E > 0.1 MeV) and helium levels of 200 to 1000 at. ppM. The 316 + Ti exhibited higher strength and lower ductility t… more
Date: August 9, 1981
Creator: Grossbeck, M. L. & Maziasz, P. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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