Analyses of shielding benchmark experiments using FENDL-3 cross-section data starter library for ITER and IFMIF applications

Abstract

Recently IAEA has been conducting a coordinated research project to update the FENDL-2.1 nuclear data library to FENDL-3. In the present study, FENDL-3, Starter Library, Release 4 (FENDL-3/SLIB4) has been extensively tested through analysis of many fusion relevant benchmark problems. FENDL-3/SLIB4 gives better results for the FNG ITER shielding benchmark and the tungsten benchmark experiments than the previous FENDL-2.1. As for the shielding benchmark in the neutron energy range above 20 MeV, the TIARA transmission experiments through iron and concrete using p-Li quasi-monoenergetic neutron source have been analyzed. FENDL-3/SLIB4 provides satisfactory results for the TIARA shielding benchmark through iron. For concrete, however, some discrepancy was found. The present analysis suggests importance of 16 O data in the neutron energy range above 20 MeV for shielding calculations through concrete.

Analyses of iron and concrete shielding experiments at JAEA/TIARA with JENDL/HE-2007, ENDF/B-VII.1 and FENDL-3.0

“…It is also considered that the underestimation in the calculation result with JENDL/HE-2007 for the 65 MeV neutron source is due to the slightly larger 56 Fe non-elastic scattering cross section data around 65 MeV. Dr. Kondo [7] pointed out that the 16 …”

“…In 2012, Dr. Kondo analyzed the iron and concrete shielding experiments with the 40 MeV neutron source at TIARA in JAEA [4] by using FENDL-3.0 starter library (release 4) [5], LA150 [6], JENDL/HE-2007 (unofficial ACE file), etc., in order to validate FENDL-3.0 starter library (release 4) [7]. He pointed out the followings.…”