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Ultra-thin A15 composite wires with a diameter of 0.03 –0.05 mm are being developed by NIMS. Since the bending strain is approximately proportional to the wire diameter, a cable composed of thin wires can be bent to a smaller bending diameter without the degradation of Ic. Thus, react-and-wind cables with ultra-thin Nb3Sn wires are expected to be realized. A tensile test was conducted for a twisted cable with 19 0.05-mm-thick wires at room temperature to confirm whether the mechanical strength of the twisted cable can be predicted from that of the single wire. The stress tolerance of the single wire and twisted cable was assessed by measuring Ic at 4.2 K after applying various uniaxial tensile loads at room temperature. The tensile stress limit of Ic was compared between the single wire and twisted cable.

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• In Copyright
  © 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

キーワード: Nb3Sn, 極細線, 引張試験, 臨界電流

刊行年月日: 2024-01-18

出版者: Institute of Electrical and Electronics Engineers (IEEE)

掲載誌:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 34 issue. 5 p. 1-5

研究助成金:

• Grants-in-Aid for Scientific Research A 21H04477

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5296

公開URL: https://doi.org/10.1109/tasc.2024.3355355

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更新時刻: 2025-01-27 09:21:04 +0900

MDRでの公開時刻: 2026-01-18 08:20:40 +0900