Abstract
Taking into consideration the unresolved resonance self-shielding effect, probability table is one of the most important and natural methods used to simulate the neutron transport in unresolved resonance range in reactor physics. A module named PURC for probabilistic unresolved resonance calculation which is embedded in the RXSP Beta2.0 code, has been developed by REAL team in Department of Engineering Physics in Tsinghua University. It is the optimization in sort algorithm that make PURC module more efficient. After applying the OpenMP parallel algorithm into this module, it has improved computational efficiency by more than one order of magnitude comparing with the corresponding functional module named PURR in NJOY code. Meanwhile the computational accuracy of PURC module is validated and verified by series of microscopic cross section comparisons and macroscopic criticality benchmarks.
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