Optimisation of stacked, bulk high temperature superconductors for trapped-field magnet applications

Autor: Shi, Yunhua, Ainslie, Mark D, Dennis, Anthony R, Durrell, John H, Cardwell, David A

Publikováno v: Shi, Y H, Ainslie, M, Dennis, A R, Durrell, J H & Cardwell, D A 2023, ' Optimisation of stacked, bulk high temperature superconductors for trapped-field magnet applications ', Superconductor Science and Technology, vol. 36, no. 8, 085018 . https://doi.org/10.1088/1361-6668/ace2ef

It is necessary to fabricate (RE)BCO bulk high temperature superconductors in the form of individual single grains in order to maximise the length scale over which current flows, and hence the trapped magnetic field. However, inherent difficulties in

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https://kclpure.kcl.ac.uk/en/publications/6dd86008-a269-4b07-ab19-4616e7eef054

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Magnetic Shielding of Open and Semi-closed Bulk Superconductor Tubes: The Role of a Cap

Autor: Kevin Hogan, Laurent Wera, Philippe Vanderbemden, Yunhua Shi, David A. Cardwell, Benoît Vanderheyden, Jean-François Fagnard, Devendra Kumar Namburi

Publikováno v: IEEE Transactions on Applied Superconductivity. 29:1-9

In this paper we investigate the magnetic shielding of hollow and semi-closed bulk superconducting tubes at 77 K. We first consider the properties of a commercial Bi-2223 tube closed by a disk-shaped cap placed against its extremity. The results are

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55efc0d2255cfaa8225f52e40d3d11ff
https://doi.org/10.1109/tasc.2019.2891897

An Explanation for Observed Flux Creep in Opposite Direction to Lorentz Force in Partially-Magnetized Bulk Superconductors

Autor: Ainslie, Mark Douglas, Weinstein, Roy, Sawh, Ravi-Persad

Sawh et al. recently reported experimental results that showed, in the case of a partially-magnetized bulk superconductor, magnetized using zero-field-cooling, that flux creep resulted in a reduced field measured at the center of the top surface of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ad930645653e6bf0a818403b9c3555e
https://www.repository.cam.ac.uk/handle/1810/289994

Influence of inner diameter and height of ring-shaped REBaCuO bulks on trapped field and mechanical stress during field-cooled magnetization

Autor: Keita Takahashi, Takashi Nakamura, Hiroyuki Fujishiro, Yousuke Yanagi, Tomoyuki Naito, Mark D. Ainslie, Yoshitaka Itoh

In this paper, the trapped field B z , thermal hoop stress σ θ cool by cooling from 300 to 50 K, and electromagnetic hoop stress σ θ FCM during field-cooled magnetization (FCM) from B app = 6.3 and 9.4 T are investigated numerically for ring-shap

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79b7ef3b908a5086615b59ffcce6abb5