Numerical Simulation of High-Temperature Superconducting Stacked-Tape Magnetic Lens via H-ϕ Model
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Publication Date
2022Journal Title
IEEE Transactions on Applied Superconductivity
ISSN
1051-8223
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Li, W., Zhang, Q., Ainslie, M., Zhou, D., He, J., Zhang, Y., & Cai, C. (2022). Numerical Simulation of High-Temperature Superconducting Stacked-Tape Magnetic Lens via H-ϕ Model. IEEE Transactions on Applied Superconductivity https://doi.org/10.1109/TASC.2022.3156538
Abstract
Magnetic lens, exploiting the induced screening current, may concentrate the spatial magnetic flux. This concept has been realized by several research groups using GdBCO and/or MgB₂ bulk superconductors. The limitation of the magnitude of concentrated flux density lies on the mechanical brittleness of the materials and the flux instability. High-temperature superconducting (HTS) tape possesses excellent mechanical and flux pinning properties and hence is a good candidate for magnetic lens. In this study, we implemented numerical simulations on the design of magnetic lenses using HTS stacked tapes. The models were constructed based on H-ϕ formulations. We investigated and compared the concentration effect of various magnetic lenses with different topologies. The results show that a central field of 22.69 T and 25.62 T can be achieved respectively with rectangular-shaped stacks and X-shaped stacks in an applied magnetic field of 20 T. An optimized design of the magnetic lens has been proposed and correspondingly the mechanism for a better concentration-effect has been explained which provides a good reference for future experiments and applications.
Sponsorship
National Key Research and Development Program (2016YFF0101701);
Strategic Priority Research Program of Chinese Academy of Sciences (XDB25000000);
Project (6140923050202);
EPSRC Early Career Fellowship, EP/P020313/1
Funder references
Engineering and Physical Sciences Research Council (EP/P020313/1)
Identifiers
External DOI: https://doi.org/10.1109/TASC.2022.3156538
This record's URL: https://www.repository.cam.ac.uk/handle/1810/334609
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