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極細素線を用いたNb3Snケーブルの超伝導特性

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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 cylinder (GFRP) 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.

Alternative title
  • Superconducting Characteristics of Nb3Sn Cables Stranded with Ultra-fine Wires
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  • Name
    菊池 章弘
    Email
    KIKUCHI.Akihiro@nims.go.jp
    Organization
    国立研究開発法人物質・材料研究機構
    Department
    エネルギー・環境材料研究センター　先進超伝導線材グループ
Keyword
Resource type
Publisher
Date published
  • 19/07/2023
Rights statement
Journal
  • Title
    低温工学
    ISSN
    03892441
    Volume
    58
    Issue
    4
    Start page
    196
    End page
    200
Manuscript type
  • Version of record (Published version)
Language
Funding reference
  • Funder identifier
    日米科学技術協力事業（高エネルギー物理学分野）13-2023a
    Funder name
    高エネルギー加速器研究機構
    Award title
    先進超極細 Nb3Sn 超伝導線材及び新奇ラザフォードケーブルの作製と評価
    Funder identifier
    科研費（基盤A）21H04477
    Funder name
    日本学術振興会
    Award title
    高磁場加速器マグネット用ケーブルのためのA15極細超伝導線

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【別刷り】極細素線を用いたNb3Sn撚線ケーブルの超伝導特性.pdf 2.05 MB MDR Open