Article Development of Super Fine Strand Nb3Al Cable for SuperKEKB Superconducting Sextupole Magnet System

Norihito Ohuchi ORCID (High Energy Accelerator Research Organization) ; Akihiro Kikuchi SAMURAI ORCID (National Institute for Materials Science) ; Masaru Yamamoto (Meiko Futaba Co., Ltd.) ; Xudong Wang (High Energy Accelerator Research Organization) ; Kiyosumi Tsuchiya ORCID (High Energy Accelerator Research Organization) ; Kazuyuki Aoki (High Energy Accelerator Research Organization) ; Yasushi Arimoto ORCID (High Energy Accelerator Research Organization) ; Toshiyuki Oki (High Energy Accelerator Research Organization) ; Zhanguo Zong (High Energy Accelerator Research Organization)

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Norihito Ohuchi, Akihiro Kikuchi, Masaru Yamamoto, Xudong Wang, Kiyosumi Tsuchiya, Kazuyuki Aoki, Yasushi Arimoto, Toshiyuki Oki, Zhanguo Zong. Development of Super Fine Strand Nb3Al Cable for SuperKEKB Superconducting Sextupole Magnet System. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY. 2023, 33 (5), 1-5. https://doi.org/10.48505/nims.4367
SAMURAI

Description:

(abstract)

Along the beamlines of the SuperKEKB main rings, 218 conventional sextupole magnets are installed, and they are used for tuning the chromaticity of the accelerator rings. Especially, 16 sextupole magnets in the beam straight lines in the Tsukuba area are quite essential for the Crab Waist beam colliding. To make the beam-tuning process finer, we are studying the superconducting sextupole magnet system with three types of corrector magnets. From the operation temperature of the system, the A15 compound superconductor is chosen as the cable material, and the development of the react and wind coil production has been tried with the Nb3Al cable. The Nb3Al super fine strand superconducting cable for the corrector magnets was manufactured, and its superconducting characteristics are being studied. In this paper, as the first test result of the development, the critical current characteristics of the straight cable as variables of temperature and magnetic field are reported. As a result, the critical current of the Nb3Al cable was higher than the design values for the corrector magnets, and this level of cable performance also indicates the potential for the cable being used for the main sextupole magnet.

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Keyword: Nb3Al, 極細線, SuperKEKB

Date published: 2023-03-06

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

  • IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY (ISSN: 10518223) vol. 33 issue. 5 p. 1-5

Funding:

  • JSPS 22H03876 (A15系超伝導体超細線ストランドケーブルの加速器用電磁石応用への技術的基礎研究)

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4367

First published URL: https://doi.org/10.1109/TASC.2023.3253073

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Updated at: 2024-01-25 11:44:01 +0900

Published on MDR: 2024-01-25 16:30:18 +0900

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