TENDL-2017 benchmark test with iron shielding experiment at QST/TIARA

摘要

We performed a TENDL-2017 benchmark test with iron shielding experiments by using 40 and 65 MeV neutrons, in order to verify a nuclear data library above 20 MeV for neutronics analyses of A-FNS. We found out that the calculated neutron spectra with TENDL-2017 unphysically increased near 30 MeV. It was determined that incorrect secondary neutron spectrum data in Fe-54, Fe-56 and Fe-58 at 30 MeV caused the increase of the neutron flux. Similar problems occurred in many nuclei of TENDL-2017, TENDL-2015 and FENDL-3.1d from TENDL-2010 and TENDL-2011.