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Static and dynamic analyses on the MFTF-B vacuum vessel. Revision 1
The Mirror Fusion Test Facility is a major magnetic fusion energy project at the Lawrence Livermore National Laboratory. An important component of this facility is the vacuum vessel, which forms the vacuum chamber. The vessel is supported on twenty-two pairs of legs that rest on reinforced concrete piers. In performing static and dynamic analyses on the vacuum vessel, we separately investigated the load distribution under gravity loads, pressure loads, electromagnetic loads, and thermal loads. We also performed sophisticated dynamic analyses to predict the structural behavior under a postulated earthquake. The modeling assumptions and analytic procedures are highlighted in this paper.
Date:
January 15, 1984
Creator:
Ng, D.S.
Object Type:
Article
System:
The UNT Digital Library
ECRH and ICRH in the TMX-U Tandem Mirror
In the Tandem Mirror Experiment Upgrade (TMX-U), the formation of a thermal barrier and the potential plugging of ion end loss were achieved at central-cell densities up to 2 x 10/sup 12/ cm/sup -3/. The presence of a thermal barrier was confirmed by direct measurement, and ion axial-confinement times in the range 50 to 100 ms were measured. The ECRH in the end cells (a) initiates plasma startup, (b) generates hot, mirror-confined electrons to form thermal barriers, and (c) creates the plugging potential for central-cell ions. The ECRH system consists of four 200 kW, 28 GHz gyrotrons each feeding power to a separate heating location (two in each end plug). Fundamental heating is used at the potential plug, and second harmonic is used in the thermal barrier. Hot-electron plasmas are produced at total end-cell antenna power levels up to 300 kW. Strong single-pass absorption and net hot-electron heating efficiencies exceeding 40% are observed. Hot-electron parameters achieved are: n/sub eh//n/sub et/ up to 0.8, volume-average beta <..beta..> approx. = 0.15, and T/sub x/ (x-ray tail above 40 keV) in the range 75 to 200 keV.
Date:
March 15, 1984
Creator:
Stallard, B. W.; Cummins, W. F.; Molvik, A. W.; Poulsen, P.; Simonen, T. C.; Falabella, S. et al.
Object Type:
Article
System:
The UNT Digital Library
Parcperdue geopressure-geothermal project. Study a geopressured reservoir by drilling and producing a well in a limited geopressured water sand. Final technical report, September 28, 1979-December 31, 1983
The behavior of geopressured reservoirs was investigated by drilling and producing a well in small, well defined, geopressured reservoir; and performing detailed pressure transient analysis together with geological, geophysical, chemical, and physical studies. The Dow-DOE L. R. Sweezy No. 1 well was drilled to a depth of 13,600 feet in Parcperdue field, just south of Lafayette, Louisiana, and began production in April, 1982. The production zone was a poorly consolidated sandstone which constantly produced sand into the well stream, causing damage to equipment and causing other problems. The amount of sand production was kept manageable by limiting the flow rate to below 10,000 barrels per day. Reservoir properties of size, thickness, depth, temperature, pressure, salinity, porosity, and permeability were close to predicted values. The reservoir brine was undersaturated with respect to gas, containing approximately 20 standard cubic feet of gas per barrel of brine. Shale dewatering either did not occur or was insignificant as a drive mechanism. Production terminated when the gravel-pack completion failed and the production well totally sanded in, February, 1983. Total production up to the sanding incident was 1.94 million barrels brine and 31.5 million standard cubic feet gas.
Date:
January 15, 1984
Creator:
Hamilton, J.R. & Stanley, J.G. (eds.)
Object Type:
Report
System:
The UNT Digital Library
X-ray diffraction and scattering studies of coal constituents. Final technical report, January 1-December 31, 1983
The general objective of this work has been to use x-ray diffraction and scattering to examine whole coals, coal macerals and minerals in order to perform the following studies: (1) to identify and explain differences in vitrinites and framboids from various coals; (2) to correlate differences with basic coal compositions and properties; and (3) to determine the systematic variability in the micro compositional variation of macerals. The accomplishments have been: (a) the development of the Fourier transform technique to do proximate and ultimate analyses in a quick fashion; and (b) the investigation of the structure of pyrite framboids and preliminary studies of coal macerals. 3 figures, 12 tables.
Date:
March 15, 1984
Creator:
Pavlovic, A. S. & Renton, J. T.
Object Type:
Report
System:
The UNT Digital Library
CONC/11: a computer program for calculating the performance of dish-type solar thermal collectors and power systems
CONC/11 is a computer program designed for calculating the performance of dish-type solar thermal collectors and power systems. It is intended to aid the system or collector designer in evaluating the performance to be expected with possible design alternatives. From design or test data on the characteristics of the various subsystems, CONC/11 calculates the efficiencies of the collector and the overall power system as functions of the receiver temperature for a specified insolation. If desired, CONC/11 will also determine the receiver aperture and the receiver temperature that will provide the highest efficiencies at a given insolation. The program handles both simple and compound concentrators. CONC/11 is written in Athena Extended Fortran (similar to Fortran 77) to operate primarily in an interactive mode on a Sperry 1100/81 computer. It could also be used on many small computers.
Date:
February 15, 1984
Creator:
Jaffe, L. D.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0119A.0244]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jerome Byrd talks with James Diggs and Bruce Batchelor, from left."
Date:
December 15, 1984
Creator:
Southerland, Paul B.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0154.0433]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jim Davis helps Danny and Harvey learn horsemanship."
Date:
February 15, 1984
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0621]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "George Dahnke and John Coffey .."
Date:
December 15, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0136.0151]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Saying 'How-Dee' Mr. and Mrs. Henry Cannon (she's Minnie pearl) is Thellis Clark dinner are."
Date:
March 15, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0486]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
June 15, 1984
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0137.0698]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. and Mrs. David Clymer, left, serve punch to Cecelia Elliott."
Date:
December 15, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0485]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
June 15, 1984
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0148.0384]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond resident Ronald Crews' physical handicap isn't obvious , but according to state law, he still is entitled to use parking spaces reserved for the handicapped."
Date:
December 15, 1984
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0326.0185]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "John Kempf blows on his euphonium during a recent practice of the Nichols Hills Platform Concert Band in Kirk Park."
Date:
August 15, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0352.0680]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
March 15, 1984
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Stress studies in EFG. Quarterly progress report, October 1-December 31, 1983
Stress analysis at Harvard University has examined the implication of non-zero interface stresses on model predictions. Stress distributions at distances greater than about 1 mm from the interface are shown to be independent of the interface stress at high creep intensities, and the predictions based on zero initial stress can be used with confidence. Numerical models for growth dynamics developed at MIT are compared with experimental data on t-V relationships and on interface shape obtained from impurity redistribution in aluminum-doped 10 cm wide ribbon. Comparison of primary creep responses in FZ (floating zone) and CZ (Czochralski) silicon above 1200/sup 0/C using four-point bending indicates that oxygen has a significant influence on the creep rate. Both the strain rate and resulting dislocation densities generated in FZ silicon are an order of magnitude higher than for the CZ material at comparable applied stress levels. A fiber optics probe suitable for temperature measurement during sheet growth has been constructed and tested. Study of the feasibility of using laser interferometric techniques for residual stress measurements has continued at the University of Illinois. The method has been successfully applied to CZ silicon, and is being evaluated for use with EFG ribbon.
Date:
February 15, 1984
Creator:
Kalejs, J.P.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0325.0171]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Convict Robert Keller views hearing."
Date:
May 15, 1984
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0405]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Endless Enemies : The Making of An Unfriendly World - Jonathan Kwitny."
Date:
June 15, 1984
Creator:
Bauer, Jerry
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0310B.0074]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Dr. and Mrs. Mason Jett and Mr. and Mrs. Carlos Johnson."
Date:
December 15, 1984
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0264.0546]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Baptist Medical Center today."
Date:
April 15, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0268.0310]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ron Huber of Putman City snaps off a curve during the recent Y Civic Baseball League's all-star games, an annual event at the close of the season."
Date:
July 15, 1984
Creator:
Gooch, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0223.0342]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Krystal Mahoney and her grandmother, Allene Penrod, exhibit Krystal's show lamb."
Date:
July 15, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0267.0645]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Trina Haslim stands in front of her earth-sheltered home in southeast Oklahoma City."
Date:
April 15, 1984
Creator:
Garrity, H Opal
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0312B.0042]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Talova Lane Jones ... author of real Estate Success Habits."
Date:
October 15, 1984
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History