Generation of bondarenko F factors with MCNP5 for use in scale transport codes

S. Hart, G. I. Maldonado

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

Abstract

Generally there are three methods of cross-section processing available when using the Scale computer code. They are NITAWL, BONAMI, and CENTRM, with CENTRM being the most common and accurate, but computationally expensive. In order to improve the accuracy of BONAMI (which uses the Bondarenko Method), new Bondarenko/F Factors were to be generated that will smooth out the current F Factors that are being generated using CENTRM. The case discussed here involves using a dedicated Monte Carlo code (MCNP5) to calculate the transport solution from which shielded cross-sections can be produced directly for the transport geometry/mesh. A simple program was created to parse and collect the tallied cross-sections from the MCNP output, which was fed into a modified CLAROL input (a module that replaces or adds data in an AMPX master library), which used the cross-sections obtained from MCNP to calculate new F-factors and update the SCALE library. This approach allows the use of other methods to generate the shielded cross-sections and for easy comparison to existing results. Initial proof-of-principle calculations were carried out for an various cases using various transport solvers, such as NEWT, KENO, and XSDRN, with BONAMI in SCALE. Poor results were obtained using cross-sections generated using infinite homogeneous cases, but good results were obtained by using pin cells in an infinite lattice.

Original languageEnglish
Title of host publicationInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
Pages1520-1526
Number of pages7
StatePublished - 2012
Externally publishedYes
EventInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012 - Chicago, IL, United States
Duration: Jun 24 2012Jun 28 2012

Publication series

NameInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
Volume2

Conference

ConferenceInternational Congress on Advances in Nuclear Power Plants 2012, ICAPP 2012
Country/TerritoryUnited States
CityChicago, IL
Period06/24/1206/28/12

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