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Alternative power supply and dump resistor connections for similar, mutally coupled, superconducting coils (open access)

Alternative power supply and dump resistor connections for similar, mutally coupled, superconducting coils

Alternative methods of connecting similar mutually coupled coils to their power supplies and dump resistors are investigated. The circuits are evaluated for both operating and fault conditions. The factors considered are the voltage to ground during a dump, short circuits, open circuits, quenches, and failure of the protection system to detect a quench. Of particular interest are the currents induced in coils that remain superconducting when one or more coils quench. The alternative connections include combined power supplies, individual dump resistors, combined resistors and series and parallel dump resistors. A new circuit that contains coupling resistors is proposed. The coupling resistors do not affect normal fast dumps but reduce the peak induced currents while also reducing the energy rating of the dump resistors. Another novel circuit, the series circuit with diodes, is discussed. The MFTF-B central-cell solenoids are used as an example.
Date: November 30, 1983
Creator: Owen, E. W.; Shimer, D. W. & Wang, S. T.
Object Type: Article
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 61, No. 287, Ed. 1 Wednesday, November 30, 1983 (open access)

The Altus Times (Altus, Okla.), Vol. 61, No. 287, Ed. 1 Wednesday, November 30, 1983

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: Gilmore, Robert K. & Hale, Dave
Object Type: Newspaper
System: The Gateway to Oklahoma History
Assurance management program for the 30 Nova laser fusion project (open access)

Assurance management program for the 30 Nova laser fusion project

The Nova assurance management program was developed using the quality assurance (QA) approach first implemented at LLNL in early 1978. The LLNL QA program is described as an introduction to the Nova assurance management program. The Nova system is described pictorially through the Nova configuration, subsystems and major components, interjecting the QA techniques which are being pragmatically used to assure the successful completion of the project.
Date: November 30, 1983
Creator: Levy, A.J.
Object Type: Article
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 62, No. 026, Ed. 1 Wednesday, November 30, 1983 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 62, No. 026, Ed. 1 Wednesday, November 30, 1983

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: Brown, Leon
Object Type: Newspaper
System: The Portal to Texas History
Burleson Dispatcher (Burleson, Tex.), Vol. 22, No. 48, Ed. 1 Wednesday, November 30, 1983 (open access)

Burleson Dispatcher (Burleson, Tex.), Vol. 22, No. 48, Ed. 1 Wednesday, November 30, 1983

Weekly newspaper from Burleson, Texas that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: Deering, Hazel
Object Type: Newspaper
System: The Portal to Texas History
El Campo Leader-News (El Campo, Tex.), Vol. 99, No. 72, Ed. 1 Wednesday, November 30, 1983 (open access)

El Campo Leader-News (El Campo, Tex.), Vol. 99, No. 72, Ed. 1 Wednesday, November 30, 1983

Semi-weekly newspaper from El Campo, Texas that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: Barbee, Chris
Object Type: Newspaper
System: The Portal to Texas History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 92, No. 286, Ed. 1 Wednesday, November 30, 1983 (open access)

The Chickasha Daily Express (Chickasha, Okla.), Vol. 92, No. 286, Ed. 1 Wednesday, November 30, 1983

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: Drew, Charles C.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Computer model of the MFTF-B neutral beam Accel dc power supply (open access)

Computer model of the MFTF-B neutral beam Accel dc power supply

Using the SCEPTRE circuit modeling code, a computer model was developed for the MFTF Neutral Beam Power Supply System (NBPSS) Accel dc Power Supply (ADCPS). The ADCPS provides 90 kV, 88 A, to the Accel Modulator. Because of the complex behavior of the power supply, use of the computer model is necessary to adequately understand the power supply's behavior over a wide range of load conditions and faults. The model developed includes all the circuit components and parameters, and some of the stray values. The model has been well validated for transients with times on the order of milliseconds, and with one exception, for steady-state operation. When using a circuit modeling code for a system with a wide range of time constants, it can become impossible to obtain good solutions for all time ranges at once. The present model concentrates on the millisecond-range transients because the compensating capacitor bank tends to isolate the power supply from the load for faster transients. Attempts to include stray circuit elements with time constants in the microsecond and shorter range have had little success because of huge increases in computing time that result. The model has been successfully extended to include the accel modulator.
Date: November 30, 1983
Creator: Wilson, J. H.
Object Type: Article
System: The UNT Digital Library
Configuration and layout of the tandem mirror Fusion Power Demonstrator (open access)

Configuration and layout of the tandem mirror Fusion Power Demonstrator

Studies have been performed during the past year to determine the configuration of a tandem mirror Fusion Power Demonstrator (FPD) machine capable of producing 1750 MW of fusion power. The FPD is seen as the next logical step after the Mirror Fusion Test Facility-B (MFTF-B) toward operation of a power reactor. The design of the FPD machine allows a phased construction: Phase I, a hydrogen or deuterium checkout machine; Phase 2, a DT breakeven machine; Phase 3, development of the Phase 2 machine to provide net power and act as a reactor demonstrator. These phases are essential to the development of remote handling equipment and the design of components that will ultimately be remotely handled. Phasing also permits more modes funding early in the program with some costs committed only after reaching major milestones.
Date: November 30, 1983
Creator: Clarkson, I.R. & Neef, W.S.
Object Type: Article
System: The UNT Digital Library
Design of a separator/neutralizer to limit impurities and non-primary species in the Mirror Fusion Test Facility (open access)

Design of a separator/neutralizer to limit impurities and non-primary species in the Mirror Fusion Test Facility

The optimum plasma for the tandem Mirror Fusion Test Facility (MFTF-B) at Lawrence Livermore National Laboratory (LLNL) is very sensitive to heavy contaminates, such as oxygen and metals. Unfortunately the current neutral beam sources generate not only high energy deuterium particles but also high energy oxygen particles. A new MFTF-B separator/neutralizer has been designed to filter out the unwanted oxygen and allow only primary species neutrals to reach the plasma.
Date: November 30, 1983
Creator: Goldner, A.I.
Object Type: Article
System: The UNT Digital Library
Development of procedures to ensure quality and integrity in Tandem Mirror Experiment-Upgrade (TMX-U) diagnostics systems (open access)

Development of procedures to ensure quality and integrity in Tandem Mirror Experiment-Upgrade (TMX-U) diagnostics systems

The diagnostic systems for Tandem Mirror Experiment-Upgrade (TMX-U) have grown from eleven initial systems to more than twenty systems. During operation, diagnostic system modifications are sometimes required to complete experimental objectives. Also, during operations new diagnostic systems are being developed and implemented. To ensure and maintain the quality and integrity of the data signals, a set of plans and systematic actions are being developed. This paper reviews the procedures set in place to maintain the integrity of existing data systems and ensure the performance objectives of new diagnostics being added.
Date: November 30, 1983
Creator: Coutts, G. W.; Coon, M. L.; Hinz, A. F.; Hornady, R. S.; Lang, D. D. & Lund, N. P.
Object Type: Article
System: The UNT Digital Library
Evaluating and tuning system response in the MFTF-B control and diagnostics computers (open access)

Evaluating and tuning system response in the MFTF-B control and diagnostics computers

The software system running on the Supervisory Control and Diagnostics System (SCDS) of MFTF-B is, for the major part, an event driven one. Regular, periodic polling of sensors' outputs takes place only at the local level, in the sensors' corresponding local control microcomputers (LCC's). An LCC reports a sensor's value to the supervisory computer only if there was a significant change. This report is passed as a message, routed among and acted upon by a network of applications and systems tasks within the supervisory computer (SCDS). Commands from the operator's console are similarly routed through a network of tasks, but in the oppostie direction to the experiment's hardware. In a network such as this, response time is partialy determined by system traffic. Because the hardware of MFTF-B will not be connected to the computer system for another two years, we are using the local control computers to simulate the event driven traffic that we expect to see during MFTF-B operation. In this paper we show how we are using the simulator to measure and evaluate response, loading, throughput, and utilization of components within the computer system. Measurement of the system under simulation allows us to identify bottlenecks and verify their …
Date: November 30, 1983
Creator: Palasek, R.L.; Butner, D.N. & Minor, E.G.
Object Type: Article
System: The UNT Digital Library
Health and Environmental Effects Document on Geothermal Energy -- 1982 update (open access)

Health and Environmental Effects Document on Geothermal Energy -- 1982 update

We assess several of the important health and environmental risks associated with a reference geothermal industry that produces 21,000 MWe for 30 y (equivalent to 20 x 10{sup 18} J). The analyses of health effects focus on the risks associated with exposure to hydrogen sulfide, particulate sulfate, benzene, mercury, and radon in air and arsenic in food. Results indicate that emissions of hydrogen sulfide are likely to cause odor-related problems in 29 of 51 geothermal resources areas, assuming that no pollution controls are employed. Our best estimates and ranges of uncertainty for the health risks of chronic population exposures to atmospheric pollutants are as follows (risks expressed per 10{sup 18} J of electricity): particulate sulfate, 44 premature deaths (uncertainty range of 0 to 360); benzene, 0.15 leukemias (range of 0 to 0.51); elemental mercury, 14 muscle tremors (range of 0 to 39); and radon, 0.68 lung cancers (range of 0 to 1.8). The ultimate risk of fatal skin cancers as the result of the transfer of waste arsenic to the general population over geologic time ({approx} 100,000 y) was calculated as 41 per 10{sup 18} J. We based our estimates of occupational health effects on rates of accidental deaths together …
Date: November 30, 1983
Creator: Layton, David W.; Daniels, Jeffrey I.; Anspaugh, Lynn R. & O'Banion, Kerry D.
Object Type: Report
System: The UNT Digital Library
The Hereford Brand (Hereford, Tex.), Vol. 83, No. 106, Ed. 1 Wednesday, November 30, 1983 (open access)

The Hereford Brand (Hereford, Tex.), Vol. 83, No. 106, Ed. 1 Wednesday, November 30, 1983

Daily newspaper from Hereford, Texas that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: Parsell, Reed D.
Object Type: Newspaper
System: The Portal to Texas History
The Mercedes Enterprise (Mercedes, Tex.), Vol. 71, No. 48, Ed. 1 Wednesday, November 30, 1983 (open access)

The Mercedes Enterprise (Mercedes, Tex.), Vol. 71, No. 48, Ed. 1 Wednesday, November 30, 1983

Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date: November 30, 1983
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
[News Clip: 26th district] captions transcript

[News Clip: 26th district]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: 6th district] captions transcript

[News Clip: 6th district]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Airport murders] captions transcript

[News Clip: Airport murders]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Ammonia break] captions transcript

[News Clip: Ammonia break]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 12:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Ammonia leak] captions transcript

[News Clip: Ammonia leak]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Ammonia spill] captions transcript

[News Clip: Ammonia spill]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 10:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Bodies] captions transcript

[News Clip: Bodies]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Bus wreck] captions transcript

[News Clip: Bus wreck]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
[News Clip: Dallas tree] captions transcript

[News Clip: Dallas tree]

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: November 30, 1983, 6:00 p.m.
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library