Volume 4, Issue 4 (April 2007)

    Use of CPXSD for Generation of Effective Fast Multigroup Libraries for Pressure Vessel Fluence Calculations

    (Received 20 June 2005; accepted 28 March 2007)

    Published Online: 2007

    CODEN: JAIOAD

      Format Pages Price  
    PDF Version 8 $25   ADD TO CART


    Abstract

    Multigroup (i.e., broad-group) libraries play a significant role in the accuracy of transport calculations. There are several broad-group libraries available for particular applications. For example the 47-neutron (26 fast groups), 20-gamma-group BUGLE libraries are commonly used for light water reactor shielding and pressure vessel dosimetry problems. However, there is no publicly available methodology to construct group structures for a problem and objective of interest. Therefore, we have developed the Contributon and Point-wise Cross-Section Driven (CPXSD) methodology, which constructs effective fine- and broad-group structures. In this paper, we use the CPXSD methodology to construct broad-group structures for fast neutron dosimetry problems. It is demonstrated that the broad-group libraries generated from CPXSD constructed group structures, while only 14 groups (rather than 26 groups) in the fast energy range are in good agreement (∼1 %–2 %) with the fine-group library from which they were derived, in reaction rate calculations.


    Author Information:

    Alpan, F. Arzu
    Research and Development Associate, Oak Ridge National Laboratory, Oak Ridge, TN

    Haghighat, Alireza
    Professor and Chair of Nuclear and Radiological Engineering, University of Florida, Gainesville, FL


    Stock #: JAI100373

    ISSN: 1546-962X

    DOI: 10.1520/JAI100373

    ASTM International is a member of CrossRef.

    Author
    Title Use of CPXSD for Generation of Effective Fast Multigroup Libraries for Pressure Vessel Fluence Calculations
    Symposium Reactor Dosimetry, 12th International Symposium, 2005-05-13
    Committee E10