Nuclear Technology & Radiation Protection Journal


NT & RP Journal	K-J POLAR ANGULAR QUADRATURE SET FOR A METHOD OF CHARACTERISTICS BASED ON NEUTRON SCATTERING CROSS-SECTIONS
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Vol. XXXIV, No. 1, Pp. 1-106 March 2019 UDC 621.039+614.876:504.06 ISSN 1451-3994 Back to Contents	Pages: 13-28 Authors: Donghoon Kim, Lucas I. Albright, Brittney L. Saenz, and Tatjana Jevremovic Abstract A novel polar angular quadrature set called the Kim-Jevremovic polar angular quadrature set is derived for the method of characteristics. It is based on neutron anisotropic scattering cross-sections in the Evaluated Nuclear Data File. This new set is implemented within the state-of-the-art neutron transport code AGENT and tested in comparison to MCNP6 as well as to other known quadrature sets for the UO₂ unit cells, the well-known C5G7 benchmark, unreflected cylinders of uranyl-fluoride solutions in heavy water, and the University of Utah 100 kW_th TRIGA MARK-I reactor core. These comparisons show that the newly proposed polar angular quadrature set provides better agreements than other quadrature sets for the lower order of anisotropic scattering expansions. This paper presents a complete derivation of the Kim-Jevremovic polar angular quadrature set and the analysis for the mentioned benchmark examples. Key words: AGENT code, method of characteristics, neutron anisotropic scattering, polarangu larquadrature set, C5G7 benchmark, TRIGA FULL PAPER IN PDF FORMAT (3,75 MB)
Vinča Institute of Nuclear Sciences :: Designed by milas :: July 2007 Operated by acapanic :: Last updated on May, 2019

Pages: 13-28

Authors: Donghoon Kim, Lucas I. Albright, Brittney L. Saenz, and Tatjana Jevremovic

Abstract

A novel polar angular quadrature set called the Kim-Jevremovic polar angular quadrature set is derived for the method of characteristics. It is based on neutron anisotropic scattering cross-sections in the Evaluated Nuclear Data File. This new set is implemented within the state-of-the-art neutron transport code AGENT and tested in comparison to MCNP6 as well as to other known quadrature sets for the UO₂ unit cells, the well-known C5G7 benchmark, unreflected cylinders of uranyl-fluoride solutions in heavy water, and the University of Utah 100 kW_th TRIGA MARK-I reactor core. These comparisons show that the newly proposed polar angular quadrature set provides better agreements than other quadrature sets for the lower order of anisotropic scattering expansions. This paper presents a complete derivation of the Kim-Jevremovic polar angular quadrature set and the analysis for the mentioned benchmark examples.

Key words: AGENT code, method of characteristics, neutron anisotropic scattering, polarangu larquadrature set, C5G7 benchmark, TRIGA

FULL PAPER IN PDF FORMAT (3,75 MB)