Reducing the Cost of S-65C Grade Beryllium for HER First Wall Applications

摘要

Beryllium is the current material of choice for plasma-facing components in ITER. The present design is for 10mm thick beryllium tiles bonded to an actively cooled copper substrate. Brush Wellman grade S65C beryllium is the preferred grade of beryllium for these tiles. S65C has the best resistance to low-cycle thermal fatigue than any other beryllium grade in the world. S65C grade beryllium has been successfully deployed in fusion reactors for more than two decades, most recently in the JET reactor. This paper will detail a supply chain to produce the most cost-effective S65C plasma facing components for ITER. This paper will also propose some future work to demonstrate the best technology for bonding beryllium to copper.