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A Novel Pragmatic Magnetic Dam Structure for Ultra-high Field (>27 T) Superconducting Magnet

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Abstract

The magnetic dam (MD) is a promising passive protection method for high-temperature superconducting (HTS) magnets. Urgent problems remain to be resolved in order to put it into practice. This article deals with the deformation problem of the magnetic dam in the background magnet quench. A novel copper–steel composite structure was proposed, which could improve the MD’s mechanical properties. As a comparison criterion, the electromagnetic stress and deformation of the magnetic dam during the background field magnet quench are simulated and analyzed. The effect of different thicknesses of stainless steel on the strength and the protection performance of the magnetic dam is also discussed. The results revealed that the original copper magnetic dam does not possess sufficient strength to survive from the low-temperature superconducting (LTS) magnet quench in the HTS/LTS magnetic system. The composite structure is more apt to be used as a passive protection method for the insert HTS magnets.

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Acknowledgements

The authors acknowledge the support of the National Natural Science Foundation of China under Grants 51777205, 51807191, and 11545004; the Bureau of Frontier Sciences and Education, Chinese Academy of Sciences under Grants QYZDJSSWJSC012; National Key Research and Development Project under Grants 2020YFF-01014702; and China’s Synergetic Extreme Condition User Facility (SECUF) Project.

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Authors and Affiliations

  1. Institute of Electrical Engineering, Chinese Academy of Sciences, Bei**g, 100190, China

    Lang Qin, Jianhua Liu, Lei Wang, Kangshuai Wang, Benzhe Zhou, Yaohui Wang & Qiuliang Wang

  2. University of Chinese Academy of Sciences, Bei**g, 100049, China

    Lang Qin

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  1. Lang Qin
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Correspondence to Lang Qin or Qiuliang Wang.

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Qin, L., Liu, J., Wang, L. et al. A Novel Pragmatic Magnetic Dam Structure for Ultra-high Field (>27 T) Superconducting Magnet. J Supercond Nov Magn 35, 1483–1489 (2022). https://doi.org/10.1007/s10948-022-06199-4

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