SUBGR: A Program to Generate Subgroup Data for the Subgroup Resonance Self-Shielding Calculation
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
The Subgroup Data Generation (SUBGR) program generates subgroup data, including levels and weights from the resonance self-shielded cross section table as a function of background cross section. Depending on the nuclide and the energy range, these subgroup data can be generated by (a) narrow resonance approximation, (b) pointwise flux calculations for homogeneous media; and (c) pointwise flux calculations for heterogeneous lattice cells. The latter two options are performed by the AMPX module IRFFACTOR. These subgroup data are to be used in the Consortium for Advanced Simulation of Light Water Reactors (CASL) neutronic simulator MPACT, for which the primary resonance self-shielding method is the subgroup method.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Consortium for Advances Simulation of LWRs (CASL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1261346
- Report Number(s):
- ORNL/TM-2016/154; CASL-U-2016-1071-000; NT0304000; NEAF343; CASL-U-2016-1070-000; TRN: US1601587
- Country of Publication:
- United States
- Language:
- English
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