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Alternative title: Superconducting Characteristics of Nb3Sn Cables Stranded with Ultra-fine Wires

Description:

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.

Rights:

• In Copyright
  

Keyword: Nb3Sn, 極細線, 撚線, 曲げひずみ, 臨界電流

Date published: 2023-07-20

Publisher: Cryogenic Association of Japan

Journal:

• 低温工学 (ISSN: 03892441) vol. 58 issue. 4 p. 196-200

Funding:

• 日本学術振興会 科研費（基盤A）21H04477 (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)
• 高エネルギー加速器研究機構 日米科学技術協力事業（高エネルギー物理学分野）13-2023a (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)

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.2221/jcsj.58.196

Related item:

Other identifier(s):

Contact agent: 菊池 章弘 (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, 国立研究開発法人物質・材料研究機構) KIKUCHI.Akihiro@nims.go.jp

Updated at: 2024-01-05 22:13:36 +0900

Published on MDR: 2023-11-17 13:30:11 +0900