Transient Electrical Characteristics of No-Insulation REBCO Coil Impregnated With GaInSn Liquid Metal

Liu, Liyuan; Li, Pingyuan; Wang, Gang; Zheng, Liancun; Zhu, Yunpeng; Zhang, GeXiang; Yang, Xiaotao; Zhao, Yong; Chen, Wei

doi:10.1109/tasc.2022.3211836

Cited by 6 publications

(1 citation statement)

References 25 publications

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“…Although the original application is for wind turbines [13], solder impregnation provides strong mechanical support for coil windings against the substantial electromagnetic force in ultra-high magnetic fields. It has been reported that solder impregnation prolongs the already long charging delay of NI coils, because of the further reduced turn-to-turn contact resistance [13][14][15]. However, the delay time of each coil varies with coil inductances, contact resistances, and electric shunts.…”

Section: Introductionmentioning

confidence: 99%

23 Tesla high temperature superconducting pocket magnet

Gao,

Chen,

Alaniva

et al. 2024

Supercond. Sci. Technol.

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We present a compact 23 T no-insulation (NI) magnet that was wound with 60 m of 10 mm wide high temperature superconducting (HTS) tape. The magnet consists of only one pocket-sized double pancake (DP) coil with an inner diameter of ~6 mm, a height of 20 mm, and an outer diameter of 41.6 mm. Another NI coil of similar size but with a larger inner diameter of 8 mm reached a slightly lower magnetic field of 21 T. We also present a smaller coil which was wound with only 20 m of HTS tape and still achieved a magnetic field of 16 T. During the experiments in liquid helium, each coil was charged to a current between 700 A and 800 A, corresponding to a high current density of 1500-1900 A/mm2. The small bore size and high current density contributed to the high fields generated by these coils. We present the fabrication details, helium tests and repeatability analysis of these “pocket” magnets.

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