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Development of a high-density energy-storage capacitor for Nova
This paper covers Maxwell's approach to developing energy storage capacitors. Based on previous capacitor designs of 3 KJ, 5 KJ and 10 KJ, the final Nova 12.5 KJ capacitor evolved. At the outset of the Nova capacitor development program, a relatively new dielectric system, polypropylene-paper-DOP, seemed to show superiority in volumetric efficiency, life, and more importantly cost. However, as a result of studies performed at Maxwell, a high-density, energy-storage capacitor was developed utilizing new high-quality, high-density paper and caster oil as the dielectric. Test data have demonstrated that the Maxwell 12.5 KJ capacitor exceeds all LLNL's qualification requirements.
Date:
October 22, 1981
Creator:
Haskell, D. K.; Cooper, R. A.; Sevigny, J. A.; Merritt, B. T.; Carder, B. M. & Whitham, K.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0171.0560]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Two-year-old Adam Eason fixes his attention on a real Halloween treat, a jack-o-lantern carved by Randy Smith."
Date:
October 22, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0147.0540]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Julie Cram of Del City leads a cheer on the sidelines."
Date:
October 22, 1981
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0272.0224]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Checking out last year's program to see what changes need to be made for the new program this year are Arthritis Bowl chairmen Jim Hyde and Cindy Hollingsworth."
Date:
October 22, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0247.0404]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Jack Hancock of the "Demons" delivers a pitch."
Date:
October 22, 1981
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0156.0117]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Patricia Dean of Mustang Flowers and Gifts pick up a floral display at co-op."
Date:
October 22, 1981
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0158.0339]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "County road crews spread lime into heavy clay soil along Southeast 44 between Sunnylane Road and Veteran's Lane near Del City in an effort to improve soil drainage before adding en extra lane."
Date:
October 22, 1981
Creator:
Hennigan, Vincent
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0227.0493]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 22, 1981
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0248.0733]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Bea and Joe Hargis, Oklahoma City , gaze at gold exhibit at Crossroads Mall."
Date:
October 22, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0258.0570]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Carl Albert students Dawn High, left, Robbin Rogers and Dianna Drye sing the Titans' school song."
Date:
October 22, 1981
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0111.0470]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Sharon Seminoff and Ranell Brown."
Date:
October 22, 1981
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0102.0136]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Physicians Ulysses S. and Larry D. Bowler are bothers preaching what the practice."
Date:
October 22, 1981
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0096.0340]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 22, 1981
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0096.0332]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Former U. S. Rep. Tom Steed, above, speaks Thursday at a ceremony dedicating Shawnee's new post office in his name."
Date:
October 22, 1981
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0070.0120]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
October 22, 1981
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0311B.0103]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Laying down wool rugs made on a New Mexico Navajo reservation, are Julie Johnson, Carol Solomon and Courtney Holiday."
Date:
October 22, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0398.0990]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 22, 1981
Creator:
Wilson, George R.
Object Type:
Photograph
System:
The Gateway to Oklahoma History
The Tulia Herald (Tulia, Tex.), Vol. 73, No. 43, Ed. 1 Thursday, October 22, 1981
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
October 22, 1981
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
Measured and projected performance of plasma direct converters
Test results from two plasma direct converters and their predicted cost and performance on tandem mirror fusion reactors are present. The tests were done at high power density (approx. 70 W/cm/sup 2/) in steady state to simulate the predicted conditions in a reactor. A single stage unit and a two-stage unit of the Venetian blind type were tested at up to 100 kV and 6 kW for a total time of about 80 hours. Measured efficiencies, when projected to a reactor, are typically about 50% for a single stage unit and 60 to 70% for a two-stage unit, depending on the energy distribution of the ions, the degree of subdivision of the collectors, and on the gas pressure. The high ambipolar potential in tandem mirror devices makes this good efficiency possible. When radiatively cooled grids are used, the incident power density is limited to about 100 W/cm/sup 2/ by the thermionic emission of electrons.
Date:
October 22, 1981
Creator:
Barr, W.L. & Moir, R.W.
Object Type:
Article
System:
The UNT Digital Library
Engineering problems of the fusion breeder
A study of fission suppressed blankets for the tandem mirror not only showed such blankets to be feasible but also to be safer than fissioning blankets. Such hybrids could produce enough fissile material to support up to 17 light water reactors of the same nuclear power rating. Beryllium was compared to /sup 7/Li for neutron multiplication; both were considered feasible but the blanket with Li produced 20% less fissile fuel per unit of nuclear power in the reactor. The beryllium resource, while possibly being too small for extensive pure fusion application, would be adequate (with carefully planned industrial expansion) for the hybrid because of the large support ratio, and hence few hybrids required. Radiation damage and coatings for beryllium remain issues to be resolved by further study and experimentation. Molten salt reprocessing was compared to aqueous solution reprocessing (thorex). The molten salt reprocessing cost is $3.4/g fissile, whereas aqueous reprocessing cost $24 or $43/g for the thorium metal or oxide fuel form.
Date:
October 22, 1981
Creator:
Moir, R. W.; Lee, J. D. & Barr, W. L.
Object Type:
Article
System:
The UNT Digital Library
MFTF-B electron-cyclotron-resonance heating system
The MFTF-B ECRH system will provide 1.6-MW of microwave power for heating of electrons within the thermal barrier and potential maximum regions of the plasma end-plugs. Absorption of this radiation increases the resonant electron energy which locally alters the electrostatic confining potential within the plasma. The result is a thermal barrier which will isolate end-plug electrons from those in the solenoid thus increasing the plasma confinement time. Microwave energy will be generated by eight 200 kW gyrotrons located outside the vacuum vessel at strategic positions near each end-plug. High voltage dc power will be obtained from a -90 kV, 90 A power supply. A compensation network will condition the dc power and channel it to eight independent pulse power regulatory/isolation networks. Each of these networks will, on command, provide -80 kV, 8 A of dc power to its attendant gyrotron cabinet positioned within the vault. Each gyrotron will interface to a quasi-optical waveguide which will transport microwave power to an antenna system located inside the vacuum vessel. The antenna systems will direct the microwave radiation into the resonant heating zones of the plasma. A local control and monitoring system will interface to the MFTF-B Supervisory Control and Diagnostics System. This …
Date:
October 22, 1981
Creator:
Krause, K. H.; Pollock, G. G. & Yugo, J. J.
Object Type:
Article
System:
The UNT Digital Library
Engineering problems of tandem-mirror reactors
We have completed a comparative evaluation of several end plug configurations for tandem mirror fusion reactors with thermal barriers. The axi-cell configuration has been selected for further study and will be the basis for a detailed conceptual design study to be carried out over the next two years. The axi-cell end plug has a simple mirror cell produced by two circular coils followed by a transition coil and a yin-yang pair, which provides for MHD stability. This paper discusses some of the many engineering problems facing the designer. We estimated the direct cost to be 2$/W/sub e/. Assuming total (direct and indirect) costs to be twice this number, we need to reduce total costs by factors between 1.7 and 2.3 to compete with future LWRs levelized cost of electricity. These reductions may be possible by designing magnets producing over 20T made possible by use of combinations of superconducting and normal conducting coils as well as improvements in performance and cost of neutral beam and microwave power systems. Scientific and technological understanding and innovation are needed in the area of thermal barrier pumping - a process by which unwanted particles are removed (pumped) from certain regions of velocity and real space …
Date:
October 22, 1981
Creator:
Moir, R.W.; Barr, W.L. & Boghosian, B.M.
Object Type:
Article
System:
The UNT Digital Library
Production and loss of H/sup -/ and D/sup -/ in the volume of a plasma
The study of the production and loss of negative ions, H/sup -/ and D/sup -/, in the volume of a plasma has received considerable attention since the measurement of anomalously high densities of H/sup -/ in 1977. The most probable mechanism for production is dissociative attachment (DA) to vibrationally highly-excited hydrogen molecules. New diagnostics developed for this purpose are photodetachment and the extension of coherent anti-Stokes Raman scattering (CARS) systems to the sensitivity required for low-pressure gases. Measurements and calculations indicate that the important loss mechanisms are diffusion to the walls at low densities and collisional destruction of several types at plasma densities above 10/sup 10/ cm/sup -3/. Production mechanisms must be highly efficient to compete with the losses. It appears to be straightforward to extrapolate measurements and theory to the densities above 10/sup 12/ cm/sup -3/ that are required for an intense source of D/sup -/ for neutral beam injection into magnetically-confined fusion devices.
Date:
October 22, 1981
Creator:
Hamilton, G.W. & Bacal, M.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.b1109.0297]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The state colors and oklahoma shaped cookies will adorn a table decored by Linda Rosser for the Kappa Alpha Theta Flaming Festival."
Date:
October 22, 1981
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History