Numerical simulation of a hybrid trapped field magnet lens (HTFML) magnetized by pulsed fields
Authors
Shinden, M
Namba, S
Hirano, T
Fujishiro, H
Naito, T
Ainslie, MD
Publication Date
2020Journal Title
Journal of Physics: Conference Series
Conference Name
32nd International Symposium on Superconductivity
ISSN
1742-6588
Publisher
IOP Publishing
Volume
1590
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
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Shinden, M., Namba, S., Hirano, T., Fujishiro, H., Naito, T., & Ainslie, M. (2020). Numerical simulation of a hybrid trapped field magnet lens (HTFML) magnetized by pulsed fields. Journal of Physics: Conference Series, 1590 (1) https://doi.org/10.1088/1742-6596/1590/1/012048
Abstract
<jats:title>Abstract</jats:title>
<jats:p>The hybrid trapped field magnet lens (HTFML) is a promising device that is able to concentrate a magnetic field higher than an applied background field continuously, even after removing a background field, which was conceptually proposed by the authors in 2018. We have numerically investigated the HTFML performance, consisting of a REBaCuO cylindrical magnetic lens and REBaCuO trapped field magnet (TFM) cylinder, magnetized by pulsed fields. Single magnetic pulses were applied ranging from <jats:italic>B</jats:italic>
<jats:sub>app</jats:sub> = 1.5 T to 5.0 T at the operating temperature of <jats:italic>T</jats:italic>
<jats:sub>s</jats:sub> = 30, 40 and 50 K, and the performance was compared with that of the single REBaCuO TFM cylinder. The HTFML effect was clearly confirmed for the lower <jats:italic>B</jats:italic>
<jats:sub>app</jats:sub> values. However, for the higher <jats:italic>B</jats:italic>
<jats:sub>app</jats:sub> values, the trapped field in the magnetic lens bore was nearly equal to or slightly lower than that for the single TFM cylinder because of a weakened lens effect due to magnetic flux penetration into the lens. A temperature rise in the REBaCuO magnetic lens and TFM cylinder was also observed. These results strongly suggest that lowering the temperature of the REBaCuO magnetic lens could enhance the HTFML effect even for higher <jats:italic>B</jats:italic>
<jats:sub>app</jats:sub>.</jats:p>
Keywords
Paper
Sponsorship
Adaptable and Seamless Technology Transfer Program through Target-driven R&D (A-STEP), Japan Science and Technology Agency (JST), Grant No. VP30218088419
JSPS KAKENHI Grant No.19K05240
Funder references
Engineering and Physical Sciences Research Council (EP/P020313/1)
Identifiers
jpcs_1590_1_012048, j15901048
External DOI: https://doi.org/10.1088/1742-6596/1590/1/012048
This record's URL: https://www.repository.cam.ac.uk/handle/1810/333439
Rights
Licence:
http://creativecommons.org/licenses/by/3.0/
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