A broad-group cross-section library based on ENDF/B-VII.0 for fast neutron dosimetry using the CPXSD methodology

F. A. Alpan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

A new ENDF/B-VII.0-based coupled 44-neutron, 20-gamma-ray-group cross-section library was developed to investigate the latest evaluated nuclear data file (ENDF) ,in comparison to ENDF/B-VI.3 used in BUGLE-96, as well as to generate an objective-specific library. The objectives selected for this work consisted of dosimetry calculations for in-vessel and ex-vessel reactor locations, iron atom displacement calculations for reactor internals and pressure vessel, and 58Ni(n,γ) calculation that is important for gas generation in the baffle plate. The new library was generated based on the contributon and point-wise cross-section-driven (CPXSD) methodology and was applied to one of the most widely used benchmarks, the Oak Ridge National Laboratory Pool Critical Assembly benchmark problem. In addition to the new library, BUGLE-96 and an ENDF/B-VII.0-based coupled 47-neutron, 20-gamma-ray-group cross-section library was generated and used with both SNLRML and IRDF dosimetry cross sections to compute reaction rates. All reaction rates computed by the multigroup libraries are within ± 20 % of measurement data and meet the U. S. Nuclear Regulatory Commission acceptance criterion for reactor vessel neutron exposure evaluations specified in Regulatory Guide 1.190.

Original languageEnglish
Title of host publicationReactor Dosimetry
Subtitle of host publication14th International Symposium
PublisherASTM International
Pages548-560
Number of pages13
ISBN (Print)9780803175365
DOIs
StatePublished - 2012
Externally publishedYes
Event14th International Symposium on Reactor Dosimetry - Bretton Woods, NH, United States
Duration: May 22 2011May 27 2011

Publication series

NameASTM Special Technical Publication
Volume1550 STP
ISSN (Print)0066-0558

Conference

Conference14th International Symposium on Reactor Dosimetry
Country/TerritoryUnited States
CityBretton Woods, NH
Period05/22/1105/27/11

Keywords

  • Cross-section library
  • ENDF/B-VII.0
  • Neutron dosimetry

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