低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
58 巻, 4 号
選択された号の論文の7件中1~7を表示しています
巻頭言
2023年度(令和5年度)低温工学・超電導学会褒賞
特集: A15 超伝導線材の研究開発(2)
テーマ解説
  • 王 旭東, 土屋 清澄, 寺島 昭男, 飯嶋 安男, 菊池 章弘
    2023 年 58 巻 4 号 p. 196-200
    発行日: 2023/07/20
    公開日: 2023/07/20
    ジャーナル フリー

    We are developing A15 cables made of ultra-fine wires for react-and-wind (R&W) magnet technology. Recently, we fabricated a bronze processed multifilament Nb3Sn wire with a diameter of 50 µm. We also made a prototype Nb3Sn cable by stranding 19 wires for testing. In this study, the transport critical current(Ic) of the cable was measured at 4.2 K and under an external field up to 18 T. The Non-Cu critical current density(Jc) was also calculated from the Ic results. For the Ic measurements, the cable was wound on glass fiber reinforced plastic(GFRP) cylinder bobbins after the heat treatment in straight geometry to replicate the R&W process. Four GFRP bobbins with different diameters were prepared to investigate the bending limit of the cable. The critical temperature(Tc) and magnetization properties of the cable were also measured by a magnetic property measurement system of Quantum Design.

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