Actively cooled high-intensity heat shield (form-locked) design analysis

A feasibility study is performed with 2D-mathematical models for heat shield designs using carbon fibre composites and tungsten monoblocks, which are form-locked to the coolant tube instead of metallurgically bonded. The geometrical boundary conditions and the overall shape correspond to the design for the ITER divertor vertical target. Steady state thermo-mechanical analyses have been carried out for a limited number of cases to investigate the effects of the particular features of the proposed connection. The results demonstrate the principal feasibility of this approach and open prospects for further improvements.