Nuclear and electromagnetic analysis of ITER equatorial EC launcher toward final design

Takahashi, Koji; Abe, Ganji; Isozaki, Masami; Komatsuzaki, Manabu*; Abe, Teruo*; Iida, Hiromasa*; Kobayashi, Noriyuki*; Kajiwara, Ken; Sakamoto, Keishi

no journal, , 

Design change from toroidal to poloidal beam steering of equatorial launcher has been proposed by ITER Organization. This design change has large design impact on blanket shield modules (BSM), millimeter wave path and components. In addition, heat resistance, structural integrity, nuclear shielding capability and etc. for the modified design are needed to be re-evaluated. At first, BSM design modification was implemented since it had the extraordinary impact. Then, the structural integrity against electromagnetic force and nuclear shielding capability was evaluated. The analysis shows that moment of almost all modules and the entire launcher structure become less than the design limit. Regarding to nuclear shielding capability, it was obtained that residual dose rate at the launcher backend was reduced by 20%. However, the residual dose from the surroundings was also revealed.