Qualitative Comparisons of Fusion Reactor Materials for Waste Handling and Disposal

Abstract

The activation of five structural materials and seven coolant/breeder/multiplier materials in a common reference neutron environment was calculated with the FORIG activation code. The reference environment was the neutron flux and spectrum at the first wall of the mirror advanced reactor study (MARS) reactor. Qualitative comparison of these activated materials were made with respect to worker protection requirements for gamma radiation in handling the materials and with respect to their classifications for near-surface disposal of radioactive waste.

Material options for a commercial fusion reactor first wall

“…The radioactive waste disposal of these materials has been studied. 1 The results indicate that PCA and the copper alloys would not qualify for near-surface burial. On the other hand, Mod HT-9 and the vanadium alloy will qualify for Class C near-surface burial.…”