Development of a high-density energy-storage capacitor for Nova (open access)

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
Diamond-turning tool setting by interferogram analysis (open access)

Diamond-turning tool setting by interferogram analysis

A method was developed to establish a numerically controlled tool path with respect to the work spindle centerline. Particularly adapted to the diamond turning of optics, this method is based upon interferogram analysis and is applicable to the establishment of the work spindle centerline relative to the tool path for any center-turned optic having a well-defined vertex radius of curvature. The application reported is for an f/2 concave spherical mirror.
Date: October 22, 1980
Creator: Rasnick, W.H. & Yoder, R.C.
Object Type: Report
System: The UNT Digital Library
The public response to Monitored Retrievable Storage: An interim report (open access)

The public response to Monitored Retrievable Storage: An interim report

This report describes public opinion concerning the proposed monitored retrievable storage facility to be located in the vicinity of Oak Ridge, Tennessee. The majority of individuals who did express an opinion opposed the facility due to transport/safety concerns and environmental/health concerns. (CBS)
Date: October 22, 1985
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Collection of CASIM calculations (open access)

Collection of CASIM calculations

Monte Carlo calculations of hadronic cascades at Fermilab have usually been done using the code CASIM written by A. Van Ginneken. These calculations are often performed to determine the quantity of shielding required for radiation protection purposes. A number of examples of such calculations have been presented previously. Several years of practical experience have led the author to develop the collection of additional cases included in the present report. These results along with those given earlier will serve as a useful reference. No attempt was made here to consider all possibilities; rather, the purpose was to develop a useful set of examples. Exceptionally intricate cases should, of course, receive individualized attention as appropriate.
Date: October 22, 1982
Creator: Cossairt, J.D.
Object Type: Report
System: The UNT Digital Library
Measured and projected performance of plasma direct converters (open access)

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 (open access)

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 (open access)

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 (open access)

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 (open access)

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
Overview of tritium processing development at the tritium systems test assembly (open access)

Overview of tritium processing development at the tritium systems test assembly

The Tritium Systems Test Assembly (TSTA) at the Los Alamos National Laboratory has been operating with tritium since June 1984. Presently there are some 50 g of tritium in the main processing loop. This 50 g has been sufficient to do a number of experiments involving the cryogenic distillation isotope separation system and to integrate the fuel cleanup system into the main fuel processing loop. In January 1986 two major experiments were conducted. During these experiments the fuel cleanup system was integrated, through the transfer pumping system, with the isotope separation system, thus permitting testing on the integrated fuel processing loop. This integration of these systems leaves only the main vacuum system to be integrated into the TSTA fuel processing loop. In September 1986 another major tritium experiment was performed in which the integrated loop was operated, the tritium inventory increased to 50 g and additional measurements on the performance of the distillation system were taken. In the period June 1984 through September 1986 the TSTA system has processed well over 10/sup 8/ Ci of tritium. Total tritium emissions to the environment over this period have been less than 15 Ci. Personnel exposures during this period have totaled less than …
Date: October 22, 1986
Creator: Anderson, J. L.
Object Type: Article
System: The UNT Digital Library
The effect of target thickness on x-ray production by FXR (Flash X-Ray Machine) (open access)

The effect of target thickness on x-ray production by FXR (Flash X-Ray Machine)

The electron-photon transport code SANDYL has been used to calculate the x-ray flux for a simplified Flash X-Ray Machine (FXR) bullnose geometry. Four different thicknesses (24.5, 36.75, 49, and 61.25 mils) were used for the tantalum bremsstrahlung target in order to study the effect of target thickness on the FXR output. The calculations were performed for a parallel 17 MeV electron beam, and the resulting angular distributions were then used to compute the forward flux for the more realistic case of a converging beam. Over the range of thicknesses studied, the x-ray energy content per steradian on axis was essentially independent of target thickness. The main reason for this is that, while the total x-ray flux coming out of the target increases with increasing target thickness, the angular width of that flux also increases. The implications for target wheel design are discussed. 3 refs., 7 figs.
Date: October 22, 1986
Creator: Back, N.L.
Object Type: Report
System: The UNT Digital Library
MFTF-B Upgrade for blanket-technology testing (open access)

MFTF-B Upgrade for blanket-technology testing

Based on preliminary studies at Lawrence Livermore National Laboratory (LLNL), we believe the Mirror Fusion Test Facility (MFTF-B) could be upgraded for operation in a hot-ion Kelley mode in a portion of the central cell to provide fusion nuclear engineering data, particularly blanket technology information, by the end of the decade. Cost of this mode of operation would be modest compared with that of the other fusion devices considered in the last few years for such purposes.
Date: October 22, 1982
Creator: Thomassen, K. I.; Doggett, J. N. & Logan, B. G.
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 10, Number 79, Pages 4107-4148, October 22, 1985 (open access)

Texas Register, Volume 10, Number 79, Pages 4107-4148, October 22, 1985

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: October 22, 1985
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 7, Number 80, Pages 3745-3808, October 22, 1982 (open access)

Texas Register, Volume 7, Number 80, Pages 3745-3808, October 22, 1982

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: October 22, 1982
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
The public response to Monitored Retrievable Storage: An interim report (open access)

The public response to Monitored Retrievable Storage: An interim report

This report describes public opinion concerning the proposed monitored retrievable storage facility to be located in the vicinity of Oak Ridge, Tennessee. The majority of individuals who did express an opinion opposed the facility due to transport/safety concerns and environmental/health concerns. (CBS)
Date: October 22, 1985
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: JM-567 (open access)

Texas Attorney General Opinion: JM-567

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether exemption for certain commodities in section 5(b) of article 6701d-11, V.T.C.S., applies to section 5(a) of article 6701d-11, V.T.C.S.
Date: October 22, 1986
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-814 (open access)

Texas Attorney General Opinion: JM-814

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether an individual may simultaneously serve as county judge and city attorney of a city within that county
Date: October 22, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-363 (open access)

Texas Attorney General Opinion: JM-363

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Authority of a judge to restrict the type of bail available to a defendent.
Date: October 22, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-364 (open access)

Texas Attorney General Opinion: JM-364

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether the applicant holds land "under color of title" pursuant to article VII, section 4A, of the Texas Constitution, when there has been a break in the chain of title.
Date: October 22, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-365 (open access)

Texas Attorney General Opinion: JM-365

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Clarification of statutes relating to approval of subdivision plats.
Date: October 22, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-366 (open access)

Texas Attorney General Opinion: JM-366

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification.: Whether the Parks and Wildlife Commission may delegate certain permitting authority to the executive director of the department.
Date: October 22, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-367 (open access)

Texas Attorney General Opinion: JM-367

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Residency status of a student whose parent is assigned out of state by the United States Public Health Service.
Date: October 22, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-368 (open access)

Texas Attorney General Opinion: JM-368

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether a ticket-vending computer terminal which merely dispenses tickets is a "gambling device" under chapter 47 of the Penal Code, and related questions.
Date: October 22, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: MW-378 (open access)

Texas Attorney General Opinion: MW-378

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Mark White, regarding a legal question submitted for clarification;Contract for renovation of Sam Houston Woodland Home in Huntsville.
Date: October 22, 1981
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History