Sensitivity analysis of the nuclear data for MYRRHA reactor modelling

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Abstract

A global sensitivity analysis of effective neutron multiplication factor keff to the change of nuclear data library revealed that JEFF-3.2T2 neutron-induced evaluated data library produces closer results to ENDF/B-VII.1 than does JEFF-3.1.2. The analysis of contributions of individual evaluations into keff sensitivity allowed establishing the priority list of nuclides for which uncertainties on nuclear data must be improved. Detailed sensitivity analysis has been performed for two nuclides from this list, 56Fe and 238Pu. The analysis was based on a detailed survey of the evaluations and experimental data. To track the origin of the differences in the evaluations and their impact on keff, the reaction cross-sections and multiplicities in one evaluation have been substituted by the corresponding data from other evaluations.

Details

Original languageEnglish
Title of host publicationNuclear Measurements, Evaluations and Applications (NEMEA-7) Collaborative International Evaluated Library Organisation (CIELO)
Place of PublicationParis, France
Pages267-275
Volume1
Publication statusPublished - 29 Aug 2014
EventNEMEA7/CIELO - A workshop of the Collaborative International Evaluated Library Organisation - EC-JRC-IRMM, Geel, Belgium
Duration: 5 Nov 20138 Nov 2013

Conference

ConferenceNEMEA7/CIELO - A workshop of the Collaborative International Evaluated Library Organisation
CountryBelgium
CityGeel
Period2013-11-052013-11-08

Keywords

  • nuclear data, sensitivity analysis, fast spectrum

ID: 355761