Thermo-mechanical design of SiC/SiC composite first wall

Finite element analysis and calculation with respect to thermo-mechanical design have been performed for the blanket first wall made of SiC/SiC composite material in the advanced steady-state tokamak reactor A-SSTR2, which is conceptually designed by the Fusion Plasma Establishment in Naka Institute, JAERI. Through 2D calculation for various geometrical configurations and sensitive material properties, a fundamental guideline for first wall and blanket design are established with respect to maximum temperature, thermal and mechanical stress for many configurations. In order to find a better solution for lower conductivity, more elaborate work should be done in future. Nonetheless, the outline of design window for this specific structural material should be very useful for future A-SSTR2 first wall design