TY - BOOK
T1 - Modeling, Performance Assessment, and Nodal Data Analysis of TRISO-Fueled Systems with Shift
AU - Pandya, Tara
AU - Bostelmann, Friederike
AU - Jessee, Matthew
AU - Ghaddar, Tarek
AU - Britt, Philip
AU - Johnson, Seth R.
PY - 2022
Y1 - 2022
N2 - This technical report documents several enhancements to the Shift Monte Carlo (MC) code under the US Department of Energy (DOE) Nuclear Energy Advanced Modeling and Simulation (NEAMS) program in fiscal year (FY) 2022. Performance enhancements were added to Shift specifically for tristructural isotropic (TRISO)–fueled reactor systems and guided based on performance analysis in FY 2021. For the pebble performance model developed in previous studies, the runtime improved by ~ 91× compared to the original model and ~ 2× compared to the user-optimized model. Compared to Serpent, Shift is ~ 3× slower if Serpent delta-tracking is enabled but ~ 2× faster when delta-tracking is disabled. The multigroup cross section generation was improved through simplifying tally input definitions, porting several post-processing tally operations from Python scripts into the Shift code base, and accounting for production reactions in the scattering multiplicity. Progress was also made on two emerging capabilities: (1) the development of Titan (a Shift reactor physics user interface) and (2) initial investigation into path-length tallies for computing multigroup scattering matrices.
AB - This technical report documents several enhancements to the Shift Monte Carlo (MC) code under the US Department of Energy (DOE) Nuclear Energy Advanced Modeling and Simulation (NEAMS) program in fiscal year (FY) 2022. Performance enhancements were added to Shift specifically for tristructural isotropic (TRISO)–fueled reactor systems and guided based on performance analysis in FY 2021. For the pebble performance model developed in previous studies, the runtime improved by ~ 91× compared to the original model and ~ 2× compared to the user-optimized model. Compared to Serpent, Shift is ~ 3× slower if Serpent delta-tracking is enabled but ~ 2× faster when delta-tracking is disabled. The multigroup cross section generation was improved through simplifying tally input definitions, porting several post-processing tally operations from Python scripts into the Shift code base, and accounting for production reactions in the scattering multiplicity. Progress was also made on two emerging capabilities: (1) the development of Titan (a Shift reactor physics user interface) and (2) initial investigation into path-length tallies for computing multigroup scattering matrices.
KW - 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
KW - 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
KW - 97 MATHEMATICS AND COMPUTING
U2 - 10.2172/1905392
DO - 10.2172/1905392
M3 - Commissioned report
BT - Modeling, Performance Assessment, and Nodal Data Analysis of TRISO-Fueled Systems with Shift
CY - United States
ER -