EVALUATION OF EROSION AND LIFETIME OF ITER DIVERTOR CANDIDATE MATERIALS AND RELEVANT DATA FROM RECENT EXPERIMENTS IN THE PISCES-B MOD FACILITY

Divertor materials erosion and lifetime is a critical issue in designi ng plasma-facing components (PFCs) for ITER. Currently, three material s are considered as candidates to be used for the divertor target plat e, namely, beryllium, carbon and tungsten. In this paper, major issues associated with the use of these candidates are reviewed and relevant data obtained from recent PISCES experiments will be discussed with t he main emphasis on the wall lifetime issue.