SWANS: A Prototypic SCALE Criticality Sequence for Automated Optimization Using the SWAN Methodology

Greenspan, E.

Oak Ridge National Laboratory

关键词: Criticality;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Manuals;    Self-Shielding;    S Codes;   

DOI  :  10.2172/777696
RP-ID  :  ORNL/TM-1999/274
RP-ID  :  AC05-96OR22464
RP-ID  :  777696

美国|英语

来源: UNT Digital Library

【 摘 要 】

SWANS is a new prototypic analysis sequence that provides an intelligent, semi-automatic search for the maximum k{sub eff} of a given amount of specified fissile material, or of the minimum critical mass. It combines the optimization strategy of the SWAN code with the composition-dependent resonance self-shielded cross sections of the SCALE package. For a given system composition arrived at during the iterative optimization process, the value of k{sub eff} is as accurate and reliable as obtained using the CSAS1X Sequence of SCALE-4.4. This report describes how SWAN is integrated within the SCALE system to form the new prototypic optimization sequence, describes the optimization procedure, provides a user guide for SWANS, and illustrates its application to five different types of problems. In addition, the report illustrates that resonance self-shielding might have a significant effect on the maximum k{sub eff} value a given fissile material mass can have.