4.6 T generated by a high temperature superconducting ring magnet
Ali, Muhammad Zulfiqar and Zheng, Jinxing and Huber, Felix and Zhang, Zhiwei and Yuan, Weijia and Zhang, Min (2020) 4.6 T generated by a high temperature superconducting ring magnet. Superconductor Science and Technology, 33 (4). 04LT01. ISSN 0953-2048 (https://doi.org/10.1088/1361-6668/ab794a)
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Abstract
We report here a record 4.6 T trapped field generated by high temperature superconducting (HTS) persistent current loops using a HTS ring structure. By stacking 200 HTS rings into a compact magnet 90 mm in diameter, we performed a field cooling magnetisation at 25 K. The main advantage of the new magnet compared to existing trapped field HTS magnets is that the magnetic field is in the parallel direction to the ab plane of the HTS, leading to higher critical currents in the same magnetic field. Therefore, compact HTS magnets can be developed based on this principle to achieve high magnetic fields. Experimental results show that the final trapped field distribution depends on the ring geometry. We developed a new three dimensional model to simulate the magnetic field distribution within the HTS ring magnet and good agreement between experiments and simulation have been found. The temperature dependency and ramping rate dependency have been studied numerically as potential factors to influence the magnet field. The proposed HTS ring magnet will have promising applications in medical imaging devices, e.g. MRI, as well as electrical machines.
ORCID iDs
Ali, Muhammad Zulfiqar, Zheng, Jinxing, Huber, Felix, Zhang, Zhiwei, Yuan, Weijia ORCID: https://orcid.org/0000-0002-7953-4704 and Zhang, Min ORCID: https://orcid.org/0000-0003-4296-7730;-
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Item type: Article ID code: 71999 Dates: DateEvent9 March 2020Published24 February 2020AcceptedSubjects: Science > Physics Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 07 Apr 2020 11:30 Last modified: 04 Dec 2024 10:52 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/71999