Title :
Thermal design and verification tests of the Nb-Ti demo poloidal coils (DPC-U1, U2)
Author :
Tsuji, H. ; Nishi, M. ; Yoshida, K. ; Tada, E. ; Kawano, K. ; Koizumi, K. ; Yamamura, H. ; Oshikiri, M. ; Takahashi, Y. ; Ando, T. ; Shimamoto, S.
Author_Institution :
JAERI, Ibaraki, Japan
fDate :
3/1/1988 12:00:00 AM
Abstract :
For the development of a 30-MJ, 7-T/s pulsed coil, a 30-kA cable-in-conduit conductor with low pulsed loss was designed and fabricated. The Japan Atomic Energy Research Institute performed verification tests to measure the temperature increase when a high-energy disturbance of 300 mJ/cc-strand is put into the superconducting strands and also to measure the stability margin of the conductor, which is increased by a factor of 1.65 when the He flow rate is increased from 0 to 1.0 g/s at the nominal current under 7 T. A possible mechanism to explain this improvement is discussed.
Keywords :
fusion reactor materials; fusion reactor theory and design; niobium alloys; superconducting magnets; titanium alloys; 30 MJ; 30 kA; He flow rate; Japan Atomic Energy Research Institute; Nb-Ti; cable-in-conduit conductor; poloidal coils; stability margin; superconducting strands; temperature increase; thermal design; verification tests; Atomic measurements; Conductors; Current measurement; Energy measurement; Fluid flow measurement; Performance evaluation; Superconducting cables; Superconducting coils; Temperature measurement; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
