Detailed design and fabrication of superconducting magnet system and for the JT-60SA

Yoshida, Kiyoshi; Tsuchiya, Katsuhiko; Kizu, Kaname; Murakami, Haruyuki; Kamiya, Koji

The upgrade of JT-60U magnet system to superconducting coils (JT-60SA) is carried out by both parties of Japan and EU in the framework of the Broader Approach agreement. In Japan, trail fabrication of superconducting conductors for the central solenoid (CS) and equilibrium field (EF) coils are progressed in short length (30m). The side of jackets is fixed by short length conductor sample. Detailed design of CS and EF coils are competed. the contract for CS and EF coil fabrication are started to design the manufacturing tools and to select an insulation material. The detailed design for thermal shield and helium distribution is progressed in Japan. In EU, the detailed design of the TF coils is competed. The assembly process to the tokamak is under studied to define geometric interface. The detailed design of the helium refrigerator and the high temperature current leads are progressed in EU.