Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

New Technique to Reformat Multigroup Cross-Sections for Monte-Carlo Calculation

12/29/2012 2012 - #04 Physics and technology of nuclear reactors

Suslov I.R. Tormyshev I.V. Melnikov K. G.

DOI: https://doi.org/10.26583/npe.2012.4.01

UDC: 621:039:51

New method to calculate equiprobability bins from Legendre expansion scattering cross-sections is proposed. The method uses a correction of equiprobability bins boundaries to provide a conservation of the first angular moment. The code CRSRD-ST to reformat cross sections from DTF to ACE format with proposed technique is developed. Numerical results shows the method proposed significantly improves an agreement between deterministic and Monte-Carlo calculations.