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Development of 12 T-10 Al-stabilized Nb3Sn conductor for TMC-II

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18 Author(s)
Takahashi, Y. ; Atomic Energy Research Institute, Tokai-mura, Naka-machi, Ibaraki-ken, Japan ; Ando, T. ; Hiyama, T. ; Tsuji, H.
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The Al-stabilized Nb3Sn strand has been successfully fabricated and Jcvalue of 400 A/mm2at 12 T is obtained on condition that Nb3Sn is reacted at 625°C for 200 hr. Overall residual resistivity of this strand is lowered to 77 % of that of the Cu-stabilized Nb3Sn strand (TMC-I)1,2at 12 T by Al-stabilizer. The 12 T-10 kA cable-in-conduit conductor, fabricated by this strands, is charged up to 20 kA at 8.7 T without appearance of normal zone. From these experimental results, this conductor satisfies almost the specification of the present target conductor (TMC-II)3.

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Magnetics, IEEE Transactions on  (Volume:21 ,  Issue: 2 )