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Report No.

Progress on manufacturing of ITER TF coil

Hemmi, Tsutomu; Kajitani, Hideki; Matsui, Kunihiro; Mizutani, Takumi; Yamane, Minoru; Sakaguchi, Kaori; Ando, Shinji; Takano, Katsutoshi; Koizumi, Norikiyo

JAEA has responsibility of procurement of 9 ITER Toroidal Field (TF) coils in ITER. Prior to TF coil fabrication, JAEA started to fabricate three dummy double pancakes (DPs) in order to confirm the commissioning of the facilities for DP fabrication and establish the manufacturing process of the DP. Fabrication of the dummy DP as full-scale trials has been started from October, 2013. In this full-scale trial, the control of conductor length with $$pm$$0.01%, flatness of radial plate (RP) with $$pm$$2 mm and flatness of DP after CP welding with $$pm$$2 mm were achieved and conductor elongation due to heat treatment was evaluated. Based on these results, TF coil winding has been started. The conductor winding has been already completed for 11 DPs of the TF coil and 10 DPs were heat treated. The conductor elongation is within expected value of $$pm$$0.02%.



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