Progress in fabrication of ITER superconducting conductor

Isono, Takaaki; Takahashi, Yoshikazu; Nunoya, Yoshihiko; Hamada, Kazuya; Matsui, Kunihiro; Nabara, Yoshihiro; Hemmi, Tsutomu; Koizumi, Norikiyo; Nakajima, Hideo; Okuno, Kiyoshi

Japan Atomic Energy Agency has been procuring superconducting conductors for ITER since 2008. TF conductors for process verification were successfully fabricated and fabrication of conductors for TF coils are in progress. Each cable is composed of 900 NbSn superconducting strands and 522 cupper strands, and the cable is inserted into a stainless steel jacket of about 760m length and compacted to be a TF conductor. In the presentation, fabrication process of TF conductor and superconducting performance of strands will be presented.