Evaluation of Various Nb-Rod-Method Cu-Nb/Nb3Sn Wires Designed for Practical React-and-Wind Coils

Masahiro Sugimoto; Hirokazu Tsubouchi; Hideki Ii; Kota Katayama; Daisuke Asami; Satoshi Awaji; Hidetoshi Oguro

doi:10.1109/TASC.2020.2977027

Evaluation of Various Nb-Rod-Method Cu-Nb/Nb₃Sn Wires Designed for Practical React-and-Wind Coils

Masahiro Sugimoto, Hirokazu Tsubouchi, Hideki Ii, Kota Katayama, Daisuke Asami, Satoshi Awaji, Hidetoshi Oguro

High Field Laboratory for Superconducting Materials

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Bronze-processed Cu-Nb/Nb₃Sn wires, composed of the Nb-rod-method Cu-Nb reinforcing stabilizer around the Nb₃Sn filament bundle, have superior mechanical strength after Nb₃Sn reaction heat-treatment at both low temperature and room temperature. The Cu-Nb/Nb₃Sn wires are able to be applied to the react-and-wind (R&W) process. Moreover, the non-Cu-J_c values of Cu-Nb/Nb₃Sn wires are remarkably increased by using both the high-tin-bronze and appropriate pre-bending treatments. In this study, we developed Cu-Nb/Nb₃Sn wires with various cross-sectional structures which were improved the I_c values under tensile stress and transvers compression stress. Also, we confirmed I_c improvements by pre-bending treatments of a Cu-Nb/Nb₃Sn triplet cable and small size Rutherford cables. Cu-Nb/Nb₃Sn wires and cables can be designed on requirements of Nb₃Sn coils.

Original language	English
Article number	9018221
Journal	IEEE Transactions on Applied Superconductivity
Volume	30
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2020.2977027
Publication status	Published - 2020 Jun 1

Keywords

Cu-Nb/NbSn wire
Nb-rod-method Cu-Nb
Prebending effect
React-and-wind

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TASC.2020.2977027

Cite this

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title = "Evaluation of Various Nb-Rod-Method Cu-Nb/Nb3Sn Wires Designed for Practical React-and-Wind Coils",

abstract = "Bronze-processed Cu-Nb/Nb3Sn wires, composed of the Nb-rod-method Cu-Nb reinforcing stabilizer around the Nb3Sn filament bundle, have superior mechanical strength after Nb3Sn reaction heat-treatment at both low temperature and room temperature. The Cu-Nb/Nb3Sn wires are able to be applied to the react-and-wind (R&W) process. Moreover, the non-Cu-Jc values of Cu-Nb/Nb3Sn wires are remarkably increased by using both the high-tin-bronze and appropriate pre-bending treatments. In this study, we developed Cu-Nb/Nb3Sn wires with various cross-sectional structures which were improved the Ic values under tensile stress and transvers compression stress. Also, we confirmed Ic improvements by pre-bending treatments of a Cu-Nb/Nb3Sn triplet cable and small size Rutherford cables. Cu-Nb/Nb3Sn wires and cables can be designed on requirements of Nb3Sn coils.",

keywords = "Cu-Nb/NbSn wire, Nb-rod-method Cu-Nb, Prebending effect, React-and-wind",

author = "Masahiro Sugimoto and Hirokazu Tsubouchi and Hideki Ii and Kota Katayama and Daisuke Asami and Satoshi Awaji and Hidetoshi Oguro",

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AU - Sugimoto, Masahiro

AU - Tsubouchi, Hirokazu

AU - Ii, Hideki

AU - Katayama, Kota

AU - Asami, Daisuke

AU - Awaji, Satoshi

AU - Oguro, Hidetoshi

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Y1 - 2020/6/1

N2 - Bronze-processed Cu-Nb/Nb3Sn wires, composed of the Nb-rod-method Cu-Nb reinforcing stabilizer around the Nb3Sn filament bundle, have superior mechanical strength after Nb3Sn reaction heat-treatment at both low temperature and room temperature. The Cu-Nb/Nb3Sn wires are able to be applied to the react-and-wind (R&W) process. Moreover, the non-Cu-Jc values of Cu-Nb/Nb3Sn wires are remarkably increased by using both the high-tin-bronze and appropriate pre-bending treatments. In this study, we developed Cu-Nb/Nb3Sn wires with various cross-sectional structures which were improved the Ic values under tensile stress and transvers compression stress. Also, we confirmed Ic improvements by pre-bending treatments of a Cu-Nb/Nb3Sn triplet cable and small size Rutherford cables. Cu-Nb/Nb3Sn wires and cables can be designed on requirements of Nb3Sn coils.

AB - Bronze-processed Cu-Nb/Nb3Sn wires, composed of the Nb-rod-method Cu-Nb reinforcing stabilizer around the Nb3Sn filament bundle, have superior mechanical strength after Nb3Sn reaction heat-treatment at both low temperature and room temperature. The Cu-Nb/Nb3Sn wires are able to be applied to the react-and-wind (R&W) process. Moreover, the non-Cu-Jc values of Cu-Nb/Nb3Sn wires are remarkably increased by using both the high-tin-bronze and appropriate pre-bending treatments. In this study, we developed Cu-Nb/Nb3Sn wires with various cross-sectional structures which were improved the Ic values under tensile stress and transvers compression stress. Also, we confirmed Ic improvements by pre-bending treatments of a Cu-Nb/Nb3Sn triplet cable and small size Rutherford cables. Cu-Nb/Nb3Sn wires and cables can be designed on requirements of Nb3Sn coils.

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KW - Prebending effect

KW - React-and-wind

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