Problem-dependent doppler broadening of continuous-energy cross sections in the keno monte carlo computer code

Shanew D. Hart, G. Ivan Maldonado, Cihangir Celik, Luiz C. Leal

Research output: Contribution to conferencePaperpeer-review

9 Scopus citations

Abstract

This paper discusses recent progress in the SCALE KENO Monte Carlo code to generate problem-dependent, Doppler-broadened cross sections. The approach investigated in this study uses a finite-difference method to calculate the temperature-dependent cross sections for the 1D data, and a simple linear-logarithmic interpolation in the square root of temperature for the probability tables. With the current approach, the temperature-dependent cross sections are Doppler broadened before transport starts, and the impact on cross section loading is negligible for all but a few isotopes. Results are compared with those obtained by using multigroup libraries. Current results compare favorably with these expected results.

Original languageEnglish
StatePublished - 2014
Event2014 International Conference on Physics of Reactors, PHYSOR 2014 - Kyoto, Japan
Duration: Sep 28 2014Oct 3 2014

Conference

Conference2014 International Conference on Physics of Reactors, PHYSOR 2014
Country/TerritoryJapan
CityKyoto
Period09/28/1410/3/14

Funding

This work was supported by the DOE Nuclear Criticality Safety Program, funded and managed by the National Nuclear Security Administration for the Department of Energy.

Keywords

  • Monte carlo
  • On-the-fly doppler broadening
  • Scale

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