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Beryllium reflected cavity reactor for UF6 critical experimentsExperiments and theoretical studies are being conducted for NASA on critical assemblies with one-meter diam by one-meter long low-density cores surrounded by a thick beryllium reflector. These assemblies make extensive use of existing nuclear propulsion reactor components, facilities, and instrumentation. Due to excessive porosity in the reflector, the initial critical mass was 19 kg U(93.2). Addition of a 17-cm-thick by 89-cm-diam beryllium flux trap in the cavity reduced the critical mass to 7 kg when all the uranium was in the zone just outside the flux trap. A mockup aluminum UF6 container was placed inside the flux trap and fueled with uranium-graphite elements. Fission distributions and reactivity worths of fuel and structural materials are available. These results will be used to guide the design of a prototype plasma core reactor which will test energy removal by optical radiation.
Document ID
19750061588
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jarvis, G. A.
Bernard, W.
Helmick, H. H.
White, R.
(California University Los Alamos, N. Mex., United States)
Date Acquired
August 8, 2013
Publication Date
September 1, 1975
Subject Category
Nuclear And High-Energy Physics
Report/Patent Number
AIAA PAPER 75-1260
Accession Number
75A45660
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-13755
Distribution Limits
Public
Copyright
Other

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