AMPX MG library of JENDL-4.0

Abstract

SCALE6.2.1 was released in 2016 and has been used worldwide. It includes new AMPX multigroup format files (AMPX MG libraries) of ENDF/B-VII.0 and ENDF/B-VII.1 and a new nuclear data processing code AMPX-6, which produces AMPX MG libraries. Thus we have produced an AMPX MG library (neutron 200 groups and gamma 47 groups) of JENDL-4.0 in order to disseminate JENDL-4.0. Neutron and gamma spectra inside a sphere of 1 m in radius with a 20 MeV neutron source at the center were calculated with ANISN and the iron experiment at JAEA/FNS was analyzed with DORT, in order to validate the AMPX MG library of JENDL-4.0. As a result, it was verified that the AMPX MG library of JENDL-4.0 had no problems except for the self-shielding correction which is a common problem in AMPX MG libraries.