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New generation of arc and arc filament power supplies for pulsed neutral beams
The new Tandem Mirror Experiment (TMX) facility at LLL requires that neutral beams operate for pulse lengths between 25 and 100 ms. The inevitable increase in cost over the present 12-ms pulse length capability dictated that a more economical alternative to the pulse forming networks and the transformer-type arc filament power supplies currently in use be found. A study of the various alternatives and design requirements revealed that battery banks are the most economical alternative. The thermionic arc filaments have relatively simple power-supply requirements in terms of control and regulation. The battery arc filament power supply controls and electromechanical hardware heat the filaments to provide the electrons which produce the plasma. Component testing revealed problems that must be addressed in the finished production design. The battery arc power supply poses a difficult set of requirements for current control. The TMX requires current control accuracy of +-1.0 percent and rise/fall times of 50 ..mu..s. These requirements are met with a novel thyristor switching circuit. The features of the four-section battery bank design, capable of a total of 4000 A at 58 V dc, are detailed. Control hardware compatible with the current generation of pulse-forming network hardware has been developed. The cost …
Date:
October 3, 1977
Creator:
Santamaria, G.T.
Object Type:
Article
System:
The UNT Digital Library
Uranium miner lung cancer study. Progress report, July 1, 1976--July 1, 1977
This study was initiated in 1957 by the U.S. Public Health and many facets of this project are reaching final objectives. Many new studies have developed in the course of this study and will continue. The projects supported by the Energy Research and Development Administration are of utmost importance and consist of: collection of material from uranium miners known to have cancer of the lung into a tumor registry; manual on pulmonary cytology; regression study of sputum cytological findings in uranium miners who showed marked atypical squamous cell metaplasia and have quit smoking cigarettes, mining, or both; continuation of sputum collection and collection of lungs from deceased miners; sensory development for localization of carcinoma in situ of the lung; and lung histology program. Since we have examined approximately 77,000 sputum samples over the last 20 years in cases that showed normal cytology at the inception of the study and some subsequently developed carcinoma of the lung, we have an accumulation of material that is worthy of study and presentation.
Date:
October 3, 1977
Creator:
Saccomanno, G.
Object Type:
Report
System:
The UNT Digital Library
Engineering of beam direct conversion for a 120-kV, 1-MW ion beam
Practical systems for beam direct conversion are required to recover the energy from ion beams at high efficiency and at very high beam power densities in the environment of a high-power, neutral-injection system. Such an experiment is now in progress using a 120-kV beam with a maximum total current of 20 A. After neutralization, the H/sup +/ component to be recovered will have a power of approximately 1 MW. A system testing these concepts has been designed and tested at 15 kV, 2 kW in preparation for the full-power tests. The engineering problems involved in the full-power tests affect electron suppression, gas pumping, voltage holding, diagnostics, and measurement conditions. Planning for future experiments at higher power includes the use of cryopumping and electron suppression by a magnetic field rather than by an electrostatic field. Beam direct conversion for large fusion experiments and reactors will save millions of dollars in the cost of power supplies and electricity and will dispose of the charged beam under conditions that may not be possible by other techniques.
Date:
October 3, 1977
Creator:
Barr, W. L.; Doggett, J. N.; Hamilton, G. W.; Kinney, J. D. & Moir, R. W.
Object Type:
Article
System:
The UNT Digital Library
Acceleration systems for heavy-ion beams for inertial confinement fusion
The requirements for a heavy-ion demonstration experiment to achieve useful electric power generation through inertial confinement fusion are discussed. (MOW)
Date:
October 3, 1977
Creator:
Faltens, A.; Judd, D.L. & Keefe, D.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0135.0467]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 3, 1974
Creator:
Giudice, Gary
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0135.0466]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 3, 1974
Creator:
Giudice, Gary
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0139.0489]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "W. O. Coleman ( Okla. Gas & Electric)"
Date:
October 3, 1972
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0146.0752]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Ainslee Cox"
Date:
October 3, 1977
Creator:
Vahlberg, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0147.0384]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Crabaugh has sparked the Eagles through their surprising fast start and did so again Friday night by tossing one touchdown pass."
Date:
October 3, 1975
Creator:
Traverse, Cliff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0143.0170]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Self-service is the idea at the dessert table for Mrs. F. Maxey Cooper, left, and Mrs. Willard L. Miller."
Date:
October 3, 1973
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0307B.0369]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "On that point, says Jones, the new president of Phillips University here, the risk is welcomed."
Date:
October 3, 1979
Creator:
Grier, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0305B.324]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Robert M. Jones, Norman, has been promoted to assistant vice-president of First Life Assurance Co., a unit of First Oklahoma Bancorp., Oklahoma City."
Date:
October 3, 1970
Creator:
Curtis Studios
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[News Clip: West Dallas Drug Center]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Fair employment]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Fort Worth police]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Southwest Airlines]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1977, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Maxwell / FBI]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Wood shingles]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Energy]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1977, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: School board]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Amtrack]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
October 3, 1979, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Cassette blanket and vacuum building: key elements in fusion reactor maintenance
The integration of two concepts important to fusion power reactors is discussed. The first concept is the vacuum building which improves upon the current fusion reactor designs. The second concept, the use of the cassette blanket within the vacuum building environment, introduces four major improvements in blanket design: cassette blanket module, zoning concept, rectangular blanket concept, and internal tritium recovery. (MHR)
Date:
October 3, 1977
Creator:
Werner, R.W.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0310B.0139]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jay Jimerson, Boomer quarterback from Norman, sets sail on a 73-yard touchdown run."
Date:
October 3, 1977
Creator:
Reed, Monty
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0255.0623]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
October 3, 1978
Creator:
Vahlberg, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History