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30-60 MHz FWCD system on DIII-D: Power division, phase control and tuning for a four-element antenna array

Description: The 2 MW Fast Wave Current Drive system on DIII-D is intended to provide a near-term demonstration of up to 0.3 MA of current driven by the fast wave. The system used to drive the four element phased antenna array which produces the required directional spectrum is presented. This system must be able to cope with strong coupling between antenna elements and the time-varying plasma load seen by the antennas. Computer modelling shows that this system should be able to maintain a directional spect… more
Date: November 1, 1991
Creator: Pinsker, R. I.; Mayberry, M. J.; Petty, C. C.; Cary, W. P.; Pusl, J.; Remsen, D. (General Atomics, San Diego, CA (United States)) et al.
Item Type: Refine your search to only Article
open access

30-60 MHz FWCD system on DIII-D: Power division, phase control and tuning for a four-element antenna array

Description: The 2 MW Fast Wave Current Drive system on DIII-D is intended to provide a near-term demonstration of up to 0.3 MA of current driven by the fast wave. The system used to drive the four element phased antenna array which produces the required directional spectrum is presented. This system must be able to cope with strong coupling between antenna elements and the time-varying plasma load seen by the antennas. Computer modelling shows that this system should be able to maintain a directional spect… more
Date: November 1, 1991
Creator: Pinsker, R. I.; Mayberry, M. J.; Petty, C. C.; Cary, W. P.; Pusl, J.; Remsen, D. et al.
Item Type: Refine your search to only Article
open access

110 GHz ECH on DIII-D: System overview and initial operation

Description: A new high power electron cyclotron heating (ECH) system has been introduced on D3-D. This system is designed to operate at 110 GHz with a total output power of 2 MW. The system consists of four Varian VGT-8011 gyrotrons, (output power of 500 kW), and their associated support equipment. All components have been designed for up to a 10 second pulse duration. The 110 GHz system is intended to further progress in rf current drive experiments on D3-D when used in conjunction with the existing 60 GH… more
Date: November 1, 1991
Creator: Cary, W. P.; Allen, J. C.; Callis, R. W.; Doane, J. L.; Harris, T. E.; Moeller, C. P. et al.
Item Type: Refine your search to only Article
open access

110 GHz ECH on DIII-D: System overview and initial operation

Description: A new high power electron cyclotron heating (ECH) system has been introduced on D3-D. This system is designed to operate at 110 GHz with a total output power of 2 MW. The system consists of four Varian VGT-8011 gyrotrons, (output power of 500 kW), and their associated support equipment. All components have been designed for up to a 10 second pulse duration. The 110 GHz system is intended to further progress in rf current drive experiments on D3-D when used in conjunction with the existing 60 GH… more
Date: November 1, 1991
Creator: Cary, W. P.; Allen, J. C.; Callis, R. W.; Doane, J. L.; Harris, T. E.; Moeller, C. P. et al.
Item Type: Refine your search to only Article
open access

The 1992 World Administrative Radio Conference: Issues for U.S. International Spectrum Policy

Description: This report examines the U.S. preparations process for WARC-92, highlighting efforts to integrate the needs and concerns of various interest groups. It also reviews the forces and trends affecting the United States as it approaches WARC-92, and is intended to inform future congressional oversight of the domestic and international radio communication policy process.
Date: November 1991
Creator: United States. Congress. Office of Technology Assessment.
Item Type: Refine your search to only Report
open access

AC microcalorimetry of adsorbates on evaporated metal films: Orientational ordering of H₂ multilayers

Description: We have improved and extended a novel ac calorimetric technique for measuring the heat capacity of adsorbates on evaporated metal films. Metallic substrates are of particular interest in current studies of the thermodynamics of adsorbed molecules. The method described in the present work is only calorimetric technique which allows measurements of molecules on simple metallic surfaces. Among other improvements, we have achieved significant progress in the preparation and characterization of the … more
Date: November 1, 1991
Creator: Phelps, R.B.
Item Type: Refine your search to only Report
open access

AC microcalorimetry of adsorbates on evaporated metal films: Orientational ordering of H₂ multilayers

Description: We have improved and extended a novel ac calorimetric technique for measuring the heat capacity of adsorbates on evaporated metal films. Metallic substrates are of particular interest in current studies of the thermodynamics of adsorbed molecules. The method described in the present work is only calorimetric technique which allows measurements of molecules on simple metallic surfaces. Among other improvements, we have achieved significant progress in the preparation and characterization of the … more
Date: November 1, 1991
Creator: Phelps, R. B.
Item Type: Refine your search to only Thesis or Dissertation
open access

The ACT sup 2 project: Demonstration of maximum energy efficiency in real buildings

Description: A large US utility recently began a project to determine whether the use of new energy-efficient end-use technologies and systems would economically achieve substantial energy savings (perhaps as high as 75% over current practice). Using a field-based demonstration approach, the Advanced Customer Technology Test (ACT{sup 2}) for Maximum Energy Efficiency is providing information on the maximum energy savings possible when integrated packages of new high-efficiency end-use technologies are incor… more
Date: November 1, 1991
Creator: Crawley, D.B. (Pacific Northwest Lab., Richland, WA (United States)) & Krieg, B.L. (Pacific Gas and Electric Co., San Ramon, CA (United States))
Item Type: Refine your search to only Article
open access

The ACT{sup 2} project: Demonstration of maximum energy efficiency in real buildings

Description: A large US utility recently began a project to determine whether the use of new energy-efficient end-use technologies and systems would economically achieve substantial energy savings (perhaps as high as 75% over current practice). Using a field-based demonstration approach, the Advanced Customer Technology Test (ACT{sup 2}) for Maximum Energy Efficiency is providing information on the maximum energy savings possible when integrated packages of new high-efficiency end-use technologies are incor… more
Date: November 1, 1991
Creator: Crawley, D. B. & Krieg, B. L.
Item Type: Refine your search to only Article
open access

The administrative record. RCRA/CERCLA Information Brief

Description: EPA requires that an administrative record be established at facilities undergoing response actions under Sections 113(k) of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). While an administrative record is established by the regulators under RCRA, DOE is recommending that DOE facilities also maintain all decision-making documentation. This information brief provides answers to questions regarding the administrative record requirements under CERCLA and under t… more
Date: November 1, 1991
Creator: Powers, J.
Item Type: Refine your search to only Report
open access

Advanced coal-fueled gas turbine systems. Technical progress report, July--September 1991

Description: Five slagging combustor tests (CR1-2 through CR1-6) were conducted. Since integrating the slagging cyclone separator into the combustor system, noticeable quantities of char have been collected in the cyclone slag bucket and detected in the exhaust gases. The primary purpose of the CR1-X series of tests was to quantify the amount of char produced by the subscale slagging combustor system. The secondary purpose of this test series was to quantify the slag separation efficiency of the curved body… more
Date: November 6, 1991
Item Type: Refine your search to only Report
open access

An advanced plasma control system for the DIII-D tokamak

Description: An advanced plasma control system is being implemented for the DIII-D tokamak utilizing digital technology. This system will regulate the position and shape of tokamak discharges that range from elongated limiter to single-null divertor and double-null divertor with elongation as high as 2.6. Development of this system is expected to lead to control system technology appropriate for use on future tokamaks such as ITER and BPX. The digital system will allow for increased precision in shape contr… more
Date: November 1, 1991
Creator: Ferron, J. R.; Kellman, A.; McKee, E.; Osborne, T.; Petrach, P.; Taylor, T. S. et al.
Item Type: Refine your search to only Article
open access

An advanced plasma control system for the DIII-D tokamak

Description: An advanced plasma control system is being implemented for the DIII-D tokamak utilizing digital technology. This system will regulate the position and shape of tokamak discharges that range from elongated limiter to single-null divertor and double-null divertor with elongation as high as 2.6. Development of this system is expected to lead to control system technology appropriate for use on future tokamaks such as ITER and BPX. The digital system will allow for increased precision in shape contr… more
Date: November 1991
Creator: Ferron, J. R.; Kellman, A.; McKee, E.; Osborne, T.; Petrach, P.; Taylor, T. S. et al.
Item Type: Refine your search to only Article
open access

Advanced soluble hydroliquefaction and hydrotreating catalysts

Description: The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations.
Date: November 22, 1991
Creator: Laine, R.M. (Michigan Univ., Ann Arbor, MI (United States). Dept. of Materials Science and Engineering) & Stoebe, T. (Washington Univ., Seattle, WA (United States). Dept. of Materials Science and Engineering)
Item Type: Refine your search to only Report
open access

Advanced soluble hydroliquefaction and hydrotreating catalysts. Quarterly report No. 5, August 7, 1991--November 6, 1991

Description: The purpose of the present program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. This approach should avoid problems related to surface area dependence, a two phase (surface-liquid) reaction system and, mass transport limitations.
Date: November 22, 1991
Creator: Laine, R. M. & Stoebe, T.
Item Type: Refine your search to only Report
open access

Air toxics provisions of the Clean Air Act: Potential impacts on energy

Description: This report provides an overview of the provisions of the Clean Air Act and its Amendments of 1990 that identify hazardous air pollutant (HAP) emissions and addresses their regulation by the US Environmental Protection Agency (EPA). It defines the major energy sector sources of these HAPs that would be affected by the regulations. Attention is focused on regulations that would cover coke oven emissions; chromium emission from industrial cooling towers and the electroplating process; HAP emissio… more
Date: November 1, 1991
Creator: Hootman, H. A. & Vernet, J. E.
Item Type: Refine your search to only Report
open access

Air toxics provisions of the Clean Air Act: Potential impacts on energy

Description: This report provides an overview of the provisions of the Clean Air Act and its Amendments of 1990 that identify hazardous air pollutant (HAP) emissions and addresses their regulation by the US Environmental Protection Agency (EPA). It defines the major energy sector sources of these HAPs that would be affected by the regulations. Attention is focused on regulations that would cover coke oven emissions; chromium emission from industrial cooling towers and the electroplating process; HAP emissio… more
Date: November 1, 1991
Creator: Hootman, H. A. & Vernet, J. E.
Item Type: Refine your search to only Report
open access

Aluminum oxide film thickness and emittance

Description: Aluminum reactor components which are not actively cooled could be subjected to high temperatures due to gamma heating after the core coolant level dropped during the ECS phase of a hypothetical LOCA event. Radiative heat transfer is the dominant heat transfer process in this scenario and therefore the emittance of these components is of interest. Of particular interest are the safety rod thimbles and Mark 60B blanket assemblies; for the K Reactor, these components have been exposed to low temp… more
Date: November 1, 1991
Creator: Thomas, J. K. & Ondrejcin, R. S.
Item Type: Refine your search to only Report
open access

Aluminum oxide film thickness and emittance

Description: Aluminum reactor components which are not actively cooled could be subjected to high temperatures due to gamma heating after the core coolant level dropped during the ECS phase of a hypothetical LOCA event. Radiative heat transfer is the dominant heat transfer process in this scenario and therefore the emittance of these components is of interest. Of particular interest are the safety rod thimbles and Mark 60B blanket assemblies; for the K Reactor, these components have been exposed to low temp… more
Date: November 1, 1991
Creator: Thomas, J. K. & Ondrejcin, R. S.
Item Type: Refine your search to only Report
open access

An amplitude analyses of the K K-bar system (M < 2 GeV/C sup 2 ) produced in J/. Psi. radiative decay

Description: Using the 5.8 {times} 10{sup 6} J/{psi} events collected by the MARK 3 experiment on the SPEAR e{sup +}e{sup {minus}} storage ring at SLAC, a mass independent amplitude analysis of the J/{psi} {yields} {gamma} K{sub s}K{sub s} and J/{psi} {yields} K{sup +}K{sup {minus}} decays is presented. For K{bar K} systems having mass less than 2 GeV/c{sup 2}, the efficiency-corrected spherical harmonic moments of the J/{psi} joint decay angular distribution are measured. Fits are then performed in each in… more
Date: November 1, 1991
Creator: Chen, Liang-Ping.
Item Type: Refine your search to only Report
open access

An amplitude analyses of the K K-bar system (M < 2 GeV/C{sup 2}) produced in J/{Psi} radiative decay

Description: Using the 5.8 {times} 10{sup 6} J/{psi} events collected by the MARK 3 experiment on the SPEAR e{sup +}e{sup {minus}} storage ring at SLAC, a mass independent amplitude analysis of the J/{psi} {yields} {gamma} K{sub s}K{sub s} and J/{psi} {yields} K{sup +}K{sup {minus}} decays is presented. For K{bar K} systems having mass less than 2 GeV/c{sup 2}, the efficiency-corrected spherical harmonic moments of the J/{psi} joint decay angular distribution are measured. Fits are then performed in each in… more
Date: November 1, 1991
Creator: Chen, Liang-Ping
Item Type: Refine your search to only Thesis or Dissertation
open access

Analysis of electronic component failures using high-density radiography

Description: The exceptional resolution and nondestructive nature of microfocus radiography has proven to be extremely useful in the diagnosis of electronic component failures, particularly when the components are contained in sealed or encapsulated assemblies. An epoxy-encapsulated NTC thermistor and an epitaxial silicon P-N junction photodetector are examples of discrete devices in which the cause of failure was correctly hypothesized directly from a radiographic image. Subsequent destructive physical exa… more
Date: November 1, 1991
Creator: Tuohig, W.D. & Potter, T.J.
Item Type: Refine your search to only Article
open access

Analysis of hydraulic instability of ANS involute fuel plates

Description: Curved shell equations for the involute Advanced Neutron Source (ANS) fuel plates are coupled to two-dimensional hydraulic channel flow equations that include fluid friction. A complete set of fluid and plate boundary conditions is applied at the entrance and exit and along the sides of the plate and the channel. The coupled system is linearized and solved to assess the hydraulic instability of the plates.
Date: November 1, 1991
Creator: Sartory, W. K.
Item Type: Refine your search to only Report
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