Neutron irradiation experiments for fusion reactor materials through JUPITER program

Abstract A Japan–USA Program of irradiation experiments for fusion research, “JUPITER”, has been established as a 6 year program from 1995 to 2000. The goal is to study “the dynamic behavior of fusion reactor materials and their response to variable and complex irradiation environment”. This is phase-three of the collaborative program, which follows RTNS-II Program (Phase-1: 1982–1986) and FFTF/MOTA Program (Phase-2: 1987–1994). This program is to provide a scientific basis for application of materials performance data, generated by fission reactor experiments, to anticipated fusion environments. Following the systematic study on cumulative irradiation effects, done through FFTF/MOTA Program, JUPITER is emphasizing the importance of dynamic irradiation effects on materials performance in fusion systems. The irradiation experiments in this program include low activation structural materials, functional ceramics and other innovative materials. The experimental data are analyzed by theoretical modeling and computer simulation to integrate the above effects.

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