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Development of a 30m long Nb3Al superconducting conductor jacketed with a round-in-square type stainless steel conduit for the toroidal field coils in JT-60SC

2003; Elsevier BV; Volume: 70; Issue: 2 Linguagem: Inglês

10.1016/j.fusengdes.2003.10.001

1873-7196

Katsuhiko Tsuchiya, K. Kizu, Yushi Miura, Toshinari ANDO, Hideo Nakajima, M. Matsukawa, A. Sakasai, S. Ishida,

Particle accelerators and beam dynamics

Abstract The modification of JT-60 was programmed to be a superconducting tokamak (JT-60SC) that has superconducting toroidal field (TF) and poloidal field coils. The Nb 3 Al superconductor was developed in order to apply to the TF coil system in JT-60SC. The TF coil conductor was designed with a cable-in-conduit (CIC) type. This conductor was Nb 3 Al cable jacketed into stainless steel (SS) conduit. As the first step of SS conduit production, the 10 m long round-in-square type tubes were successfully fabricated within eccentricity tolerance of the tube hole ( 3 Al CIC conductor was successfully fabricated, so that a feasibility of mass-producing CIC conductor applied to the real machine was obtained.