Magnetization mechanism of a hybrid high temperature superconducting trapped field magnet

Hengpei Liao, Weijia Yuan, Zhiwei Zhang, Min Zhang

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)
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Abstract

This paper studies the magnetization mechanism of a hybrid high temperature superconducting (HTS) trapped field magnet. To address the size limitation of traditional HTS bulk materials, hybridization between HTS-stacked ring magnets and HTS bulks is proposed here. A jointless HTS-stacked ring magnet is used to increase the trapped field area for HTS bulks. A hybrid HTS magnet with 90 mm in length and 60 mm in width was tested to provide a trapped field of 7.35 T in a field cooling magnetization. The paper focuses mainly on understanding the novel magnetization mechanism of this hybrid HTS trapped field magnet. A numerical model based on homogenized H formulation was used to compare with experimental results, and a good match was found. Our experimental and numerical study of the electromagnetic interaction between the HTS-stacked ring magnet and the HTS bulks reveals that there are two magnetization stages, and the magnetization speed differs in these two stages by a sing criterion: whether the HTS-stacked ring magnet is fully penetrated or not. This study confirms that hybridization helps to build large HTS trapped field magnets.
Original languageEnglish
Article number023902
Number of pages6
JournalJournal of Applied Physics
Volume133
Issue number2
DOIs
Publication statusPublished - 9 Jan 2023

Keywords

  • hybrid high temperature
  • field magnet
  • ring magnets

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