Effect of simulated thermal shield motion on nuclear instrument response: measurements and calculations

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Description

An experiment has been performed to determine the effect of motion of a thermal shield on the neutron signal expected from ex-core detectors. Using a mockup of the LWBR reactor vessel, thermal shield, and core barrel in conjunction with a /sup 252/Cf neutron source, the change in detector signal with displacement of the various components was investigated. It was found that moving the thermal shield would produce a significant change in detector signal, although the effect was smaller than would be produced by moving the source and core barrel together. The results were substantiated by two-dimensional discrete-ordinate calculations.

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22 pages

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Schick, W. C., Jr.; Emert, C. J.; Shure, K. & Natelson, M. August 1, 1979.

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  • Main Title: Effect of simulated thermal shield motion on nuclear instrument response: measurements and calculations
  • Series Title: LWBR Development Program

Description

An experiment has been performed to determine the effect of motion of a thermal shield on the neutron signal expected from ex-core detectors. Using a mockup of the LWBR reactor vessel, thermal shield, and core barrel in conjunction with a /sup 252/Cf neutron source, the change in detector signal with displacement of the various components was investigated. It was found that moving the thermal shield would produce a significant change in detector signal, although the effect was smaller than would be produced by moving the source and core barrel together. The results were substantiated by two-dimensional discrete-ordinate calculations.

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22 pages

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Dep. NTIS, PC A02/MF A01.

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 1979

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  • Feb. 18, 2018, 3:59 p.m.

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  • Jan. 13, 2021, 7:30 p.m.

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Schick, W. C., Jr.; Emert, C. J.; Shure, K. & Natelson, M. Effect of simulated thermal shield motion on nuclear instrument response: measurements and calculations, report, August 1, 1979; West Mifflin, Pennsylvania. (https://digital.library.unt.edu/ark:/67531/metadc1098824/: accessed December 2, 2023), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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