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Title: SCALE/AMPX multigroup libraries for sodium-cooled fast reactor systems

Journal Article · · Annals of Nuclear Energy (Oxford)
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); École polytechnique fédérale de Lausanne (Switzerland)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH, Garching (Germany)
  4. École polytechnique fédérale de Lausanne (Switzerland)
+ Show Author Affiliations

New multigroup cross section libraries and associated covariance files that are optimized for the analysis of sodium-cooled fast reactors were generated with the AMPX tools distributed with the SCALE code system. These new libraries account for the fast neutron flux spectrum with sufficient resolution of resonances in the higher energy range to reproduce continuous-energy reference results and to provide the basis for sensitivity and uncertainty analyses of fast spectrum systems with the SCALE code system. The performance of the new libraries was investigated in terms of the eigenvalue, the neutron flux and reaction rates in criticality calculations, and the generation of group constants. A library using 302 energy groups and a fast neutron flux spectrum as the weighting function led to very good agreement with reference continuous-energy results. As a result, the performance of the new library was demonstrated in calculations of experiments from the International Criticality Safety Benchmark Evaluation Project handbook.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1607257
Journal Information:
Annals of Nuclear Energy (Oxford), Vol. 140, Issue C; ISSN 0306-4549
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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22 GENERAL STUDIES OF NUCLEAR REACTORS
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