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125 Matching Results
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LOFT shield tank steady state temperatures with addition of gamma and neutron shielding
The effect of introducing a neutron and gamma shield into the annulus between the reactor vessel and the shield tank is analyzed. This addition has been proposed in order to intercept neutron streaming up the annulus during nuclear operations. Its installation will require removal of approximately 20-/sup 1///sub 2/ inches of stainless steel foil insulation at the top of the annulus. The resulting conduction path is believed to result in increased water temperatures within the shield tank, possibly beyond the 150/sup 0/F limit, and/or cooling of the reactor vessel nozzles such that adverse thermal stresses would be generated. A two dimensional thermal analysis using the finite element code COUPLE/MOD2 was done for the shield tank system illustrated in the figure (1). The reactor was assumed to be at full power, 55 MW (th), with a loop flow rate of 2.15 x 10/sup 6/ lbm/hr (268.4 kg/s) at 2250 psi (15.51 MPa). Calculations indicate a steady state shield tank water temperature of 140/sup 0/F (60/sup 0/C). This is below the 150/sup 0/F (65.56/sup 0/C) limit. Also, no significant changes in thermal gradients within the nozzle or reactor vessel wall are generated. A spacer between the gamma shield and the shield tank …
Date:
September 29, 1977
Creator:
Kyllingstad, G.
Object Type:
Report
System:
The UNT Digital Library
Compact 80-keV neutral-beam module
A compact and maintainable source of 80-keV neutral beams that focus to a high power density is required for the Mirror Fusion Test Facility (MFTF). In the new source being designed and built to meet these requirements, the cross-sectional area is reduced in two ways: by immersing the source in a vacuum where high voltage can be held over smaller distances and by redesigning grid supporting structures. Reliability is increased by reducing the electric fields everywhere else below those present between grids and by design innovations. The latter include techniques to reduce stray magnetic field and disperse gas uniformly, all metal-ceramic construction, and a 60-kV shield enclosing all 80-kV electrodes. Wherever possible, we have attempted to simplify the construction. We expect to solve problems that arise during testing either with add-on fixes or with the techniques already tested successfully on the Lawrence Berkeley Laboratory (LBL) 120-keV source. Easy maintenance is obtained by a compact isolation valve and by modular construction. Curving both the grid wires and their holders provides focusing in two planes.
Date:
September 29, 1977
Creator:
Molvik, A. W.; Baird, E. D.; Berkner, K. H.; Cooper, W. S.; Duffy, T. J.; Ehlers, K. W. et al.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0224.0485]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Pro-life attorney Bill Choate appeared at the anti-abortion exhibit at State Fair of Oklahoma Today as fair officials again refused to return materials to Oklahomans for Life."
Date:
September 29, 1977
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0078]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma State Fair 1977"
Date:
September 29, 1977
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
4. pi. interferometric measurements of laser fusion targets
Apparatus is described for rapidly manipulating a hollow glass microsphere laser fusion target and scanning the entire wall with a double pass interference microscope.
Date:
September 29, 1977
Creator:
Weinstein, B.W.; Willenborg, D.L.; Weir, J.T. & Hendricks, C.D.
Object Type:
Article
System:
The UNT Digital Library
Regulated 15-V, 7500-A, neutral-beam filament supply
Lawrence Livermore Laboratory (LLL) designed a cost-effective, regulated 15-V, 7500-A filament supply for use with the High-Voltage Test Stand , a major ERDA developmental neutral-beam test facility. The filament supply can float to 200 kV and can provide pulse widths up to 30 s. Powered by a 24-V, 0.5-TJ battery bank, it avoids the use of expensive isolation transformers and induction voltage regulators (IVR's). Battery output is regulated by a water-cooled resistor-contactor combination in which contactors are closed in sequential format to create a staircase current waveform. A fine-tuning network tunes in-between the ''steps'' for regulation to less than 0.5 percent. The regulator is digitally controlled except for the sense amplifiers, which are optically coupled to the digital controller. All ground telemetry uses optical links to minimize effects of rfi and emi noise in the data channels.
Date:
September 29, 1977
Creator:
Reass, W.
Object Type:
Article
System:
The UNT Digital Library
Tradeoffs in capacitor bank design
When designing a capacitor bank for energy storage, the engineer should not use more capacitors, voltage, or energy than necessary to supply the load and to overcome losses. Universal curves presented here aid the designer in making intelligent choices. For example, there is a minimum stored energy to be achieved, but no minimum voltage at which to store it. Included in the curves are the effects of series losses such as voltage drops in regulator tubes or in current-limiting resistors. Capacitor bank designs for the neutral-beam power supplies on 2XIIB and TMX are compared using the developed criteria.
Date:
September 29, 1977
Creator:
Leavitt, G.A.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0250.0112]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Ambulance attendant comforts Susan Harris after car wreck involving Fleeing suspect."
Date:
September 29, 1977
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0051.1077]
Photograph taken for a story in the Oklahoma City Times newspaper. Caption: "Smashed auto where child was killed and her mother injured marks one stage of a wild chase which ended with the arrest of an ex-convict at the airport."
Date:
September 29, 1977
Creator:
Albright, Bob
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0106.0241]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
September 29, 1977
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0106.0240]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
September 29, 1977
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0408.0037]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
September 29, 1977
Creator:
Cook, J. Don
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0106.0295]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Pilings are being set for the new bridge across the South Canadian River."
Date:
September 29, 1977
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
The Tulia Herald (Tulia, Tex.), Vol. 69, No. 39, Ed. 1 Thursday, September 29, 1977
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 29, 1977
Creator:
Baggarly, H. M.
Object Type:
Newspaper
System:
The Portal to Texas History
[Letter from Eleanor Brown to President Jimmy Carter, September 29, 1977]
Letter from Eleanor Brown to President Jimmy Carter concerning pending legislation to award veterans' status to the WASPs. She asks why the legislation has been held up in committee and expresses dismay that the WASPs have not been given veterans' status.
Date:
September 29, 1977
Creator:
Brown, Eleanor McLernon
Object Type:
Letter
System:
The Portal to Texas History
The Cherokeean. (Rusk, Tex.), Vol. 128, No. 32, Ed. 1 Thursday, September 29, 1977
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
September 29, 1977
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Rio Grande Herald (Rio Grande City, Tex.), Vol. 35, No. 50, Ed. 1 Thursday, September 29, 1977
Weekly newspaper from Rio Grande City, Texas that includes local, state and national news along with extensive advertising.
Date:
September 29, 1977
Creator:
Solis, Tony
Object Type:
Newspaper
System:
The Portal to Texas History
[Letter from John J. Herrera to Mary Mandraes - 1977-09-29]
Letter from John J. Herrera to Mary Mandraes, National Treasurer of League of United Latin American Citizens, dated September 29, 1977. The letter serves as a record of Herrera's bill of expenses for the Joe Velez impeachment hearings held in Los Angeles, California.
Date:
September 29, 1977
Creator:
Herrera, John J.
Object Type:
Letter
System:
The Portal to Texas History
[News Clip: Suspect]
B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 29, 1977, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Machine]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 29, 1977
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Greek Food Festival]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 29, 1977
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: School board (Fort Worth)]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 29, 1977
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Cattle sales]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 29, 1977
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Hotel space]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
September 29, 1977, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library