Status of ITER ICH Matching System Design

Work on the design of the ITER ICH matching system is progressing. The design has been significantly improved. The system will deliver a total power of 20 MW for long-pulse (> 3000 s) operation. The present matching system has hybrid comb iner-spl itter circuits for ELM resilience, active matching during a shot using a double-stub-tuner circuits decouplers between the eight inputs to each antenna, water-cooled transmission lines and matching components in the unmatched section, and air-cooled transmission lines using turbulent cooling.