Author :
Koizumi, N. ; Ito, T. ; Ogata, H. ; Takahashi, Y. ; Sugimoto, M. ; Nakajima, H. ; Kato, T. ; Nunoya, Y. ; Ando, T. ; Tsuji, H. ; Shimamoto, S. ; Shigenaka, A. ; Tsukamoto, H. ; Asano, K. ; Suzuki, S.
Abstract :
Critical current of Nb3Al is less sensitive to strain than Nb3Sn. This characteristic makes a react-and-wind method applicable in a large dimension coil. By applying the react-and-rind method for toroidal field (TF) coil, technical difficulties in transfer of the conductor after reaction are eliminated and construction cost of magnet system can be reduced in comparison with a wind-react-insulate-transfer method. Therefore, the Nb3Al conductor has large potential as candidate for the TF conductor. The experiment of a 60 kA-12.5 T Nb3Al insert is projected to demonstrate applicability of the react-and-wind method with the Nb3 Al conductor. The react-and-wind method will be employed in the winding and 0.4% bending strain will be applied to the conductor. The major characteristics of the Nb3Al insert are reported in this paper
Keywords :
aluminium alloys; design engineering; fusion reactor materials; fusion reactor theory; niobium alloys; solenoids; superconducting coils; superconducting magnets; winding (process); 12.5 T; 60 kA; ITER central solenoid model coil; Nb3Al; Nb3Al insert; bending strain; characteristics; react-and-wind method; toroidal field superconducting coil; winding; Artificial intelligence; Capacitive sensors; Conductors; Critical current; Niobium; Niobium-tin; Solenoids; Superconducting coils; Testing; Wounds;
