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Description:

A low circuit resistance is required for a superconducting magnet operated in persistent mode using superconducting joints. We performed current decay measurements on a high-temperature superconducting (HTS) closed loop with a superconducting joint to evaluate the time dependence of current and resistance. The results were quantitatively explained considering current sharing and flux creep. After the elapse of 10^5 s, current sharing was suppressed and a circuit resistance of less than 10^−13 Ω was observed. The main finding is that joint resistance for an HTS closed loop is inversely proportional to time, contributing to the low circuit resistance.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: Superconducting joint

Date published: 2023-09-01

Publisher: IOP Publishing

Journal:

• Applied Physics Express (ISSN: 18820786) vol. 16 issue. 9 093002

Funding:

• JST-Mirai Program JPMJMI17A2
• Japan Society for the Promotion of Science JP22H01522
• Japan Society for the Promotion of Science JP22K14482

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

MDR DOI:

First published URL: https://doi.org/10.35848/1882-0786/acf7a9

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Updated at: 2024-04-05 12:30:32 +0900

Published on MDR: 2024-04-05 12:30:32 +0900