Improvement of Geant4 Neutron-HP package: From methodology to evaluated nuclear data library

نویسندگان

چکیده

An accurate description of interactions between thermal neutrons (below 4 eV) and materials is key to simulate the transport in a wide range applications such as criticality-safety, reactor physics, compact accelerator-driven neutron sources, radiological shielding or nuclear instrumentation, just name few. While Monte Carlo code Geant4 was initially developed particle physics experiments, %-with large emphasis given on modeled cross-sections for all known particles at conceivable energies-, its use has spread neutronics applications, requiring evaluated gammas $0$ $20$ MeV (the so-called High Precision -HP- package), well proper offline on-the-flight treatment these cross-sections. In this paper we will point out limitations affecting (version 10.07.p01) associated data libraries, by using comparisons with reference \tripoli, version 11, present results various modifications neutron-HP package, required overcome limitations. Also, order broaden support libraries compatible Geant4, processing tool been validated allowing together ENDF-BVIII.0 JEFF-3.3 example. These changes should be taken into account an upcoming release.

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ژورنال

عنوان ژورنال: Nuclear Instruments and Methods in Physics Research

سال: 2022

ISSN: ['1872-9576', '0168-9002']

DOI: https://doi.org/10.1016/j.nima.2021.166187