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Analysis of the First Three Zeus Critical Experiments

Russell D. Mosteller, Roger W. Brewer, Peter J. Jaegers

Nuclear Science and Engineering / Volume 145 / Number 1 / September 2003 / Pages 105-119

Technical Paper /

The Zeus experiments have been designed to test the adequacy of 235U cross sections in the intermediate-energy range. Detailed models of the three Zeus critical experiments are developed for the MCNP Monte Carlo code, and calculated results, based on cross sections derived from ENDF/B-V and ENDF/B-VI, are presented and assessed. A series of modeling simplifications then is described that transforms the detailed representations into benchmark configurations, and the reactivity impact of each of those simplifications is assessed.

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