STP1228: Comparison of the BUGLE-80 and SAILOR Libraries for Coupled Neutron-Gamma Transport Applications

    White, JR
    Professor, University of Massachusetts-Lowell, Lowell, MA

    Spinney, KB
    Senior Engineer, Senior Nuclear Engineer, and Manager, Yankee Atomic Electric Co., Bolton, MA

    Morrissey, KJ
    Senior Engineer, Senior Nuclear Engineer, and Manager, Yankee Atomic Electric Co., Bolton, MA

    Cacciapouti, RJ
    Senior Engineer, Senior Nuclear Engineer, and Manager, Yankee Atomic Electric Co., Bolton, MA

    Pages: 10    Published: Jan 1994


    Abstract

    The coupled neutron-gamma cross section libraries BUGLE-80 and SAILOR are compared, with focus on gamma production and transport and its sensitivity to the thermal component of the neutron flux. In addition, the importance of the prompt versus delayed components of the gamma source is addressed. Although BUGLE-80 shows some discrepancies in the core region, the two libraries demonstrate similar capability in the vicinity of the pressure vessel and beyond. The delayed fission product gammas from the core have little impact on the local gamma fluxes beyond the pressure vessel. Although thermal neutron capture is the dominant component of the gamma source, there is little sensitivity of the gamma source to uncertainties in the thermal neutron cross sections, due to compensating effects which tend to keep the thermal neutron capture rate relatively constant.

    Keywords:

    coupled neutron-gamma cross sections, neutron transport, thermal neutron flux, gamma production, gamma transport


    Paper ID: STP15160S

    Committee/Subcommittee: E10.08

    DOI: 10.1520/STP15160S


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