Fusion Neutronics Benchmark Experiment on Structural and Advanced Blanket Materials - Leakage Neutron Spectrum Measurement -

Abstract

Fusion neutronics benchmark experiments for copper and tungsten and advanced breeder materials of LiAlO₂, Li₂TiO₃ and Li₂ZrO₃ have been conducted at FNS of JAERI to validate five nuclear data files, i.e., JENDL-3.2, JENDL Fusion File, ENDF/B-VI, FENDL/E-1.0 and FENDL/E-2.0. From the result, all the nuclear data files were confirmed to be fairly reliable with respect to the prediction of neutron spectrum. However, some problems were pointed out. Especially for Zr, the discrepancy between the experimental and calculated spectra is remarkably large.

Keywords:

• fusion reactor
• blanket material
• structural material
• leakage neutron spectrum
• benchmark