Development and Manufacturing of Bronze-Processed Ta-Added Nb3Sn Wires for the ITER

Kenichi KIKUCHI; Masahiro SEIDOU; Genzou IWAKI; Syuuji SAKAI; Hidezumi MORIAI; Masataka NISHI; Kiyoshi YOSHIDA; Takaaki ISONO; Hiroshi TSUJI

doi:10.2221/jcsj.32.167

Development and Manufacturing of Bronze-Processed Ta-Added Nb₃Sn Wires for the ITER

Kenichi KIKUCHI, Masahiro SEIDOU, Genzou IWAKI, Syuuji SAKAI, Hidezumi MORIAI, Masataka NISHI, Kiyoshi YOSHIDA, Takaaki ISONO, Hiroshi TSUJI

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Keywords: ITER, bronze-processed Nb₃Sn wire, Ta-added Nb₃Sn, high-Sn-concentration bronze, hysteresis loss

JOURNAL FREE ACCESS

1997 Volume 32 Issue 4 Pages 167-172

DOI https://doi.org/10.2221/jcsj.32.167

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Abstract

Development work to produce a high-performance Nb₃Sn superconducting wire for the center solenoid coil of the ITER was carried out. The effects of concurrently adding Ti and Ta to bronze-processed Nb₃Sn wires were examined. In addition, a high-Sn-concentration bronze matrix was applied. Then, the relation between hysteresis loss and filament diameter was examined. Moreover, the cause of wire breakage during processing was elucidated. As a result, a reliable manufacturing process for high-performance Nb₃Sn superconducting wire was established.

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