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Design consideration of the ITER-TF coil with a react-and-wind technique using Nb3Al conductor

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8 Author(s)
Ando, T. ; Naka Fusion Res. Establ., JAERI, Ibaraki, Japan ; Sugimoto, M. ; Koizumi, N. ; Nunoya, Y.
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The ITER-TF coil requires a generation of 12.5 T in a size of 12 m×18 m. For such a high field-large coil, the applicability of Nb 3Al conductors was considered with a react-and-wind technique which realizes high reliability and low cost for the coil fabrication. The maximum bending strain on the Nb3Al conductor in use of this technique is 0.39%. Ic degradation due to the strain is expected to be below 5%. The limiting current is estimated as 65 kA for 60 kA operation current. AC loss in the TF coil with Nb3Al conductor is almost the same as with Nb3Sn conductor

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 4 )