RADIATION COMPARISON: BACKGROUND RADIATION AND ARC NUCLEAR FUSION REACTOR IRRADIATED MAGNETS

ARC (Affordable Robust Compact) reactor is a tokamak design developed with a specific goal: to investigate on the best technologies industrially available nowadays to build a commercial fusion reactor in the nearest future. The design foresees the adoption of the innovative High Temperature Superconductors (HTS), that allow a significant size reduction: among the superconductors the REBCO (Rare Earth Barium Copper Oxides) tapes have been adopted in the design of the ARC Toroidal field coils. They have been object of a specific study concerning their behavior under neutron irradiated environment, to assess their radiation damage. These results have been useful to perform a comparison of REBCO superconductors activation with radiation background, in order to understand how their level of radioactivity can be harmful with respect to natural radiation.