Fusion structural material development in view of DEMO design requirement

Tanigawa, Hiroyasu

The fusion structural materials, especially those in blanket system, will be subjected to high heat loads and high flux 14 MeV fusion neutrons, and will experience thermal stresses, substantial magnetic forces in case of plasma disruptions, and high pressure loads in the case of a coolant leak. For this use, the structural material must have an adequate database including irradiation database to assure the mechanical properties, and to define the limits for its usage, along with sound technical bases on full scale manufacturing and joining technologies. In this talk, the strategy to develop fusion structural material in view of design requirement is discussed in case of structural material development for fusion blanket system.