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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:92 Issue:10 Help

Superconducting trapped-field magnets: Temperature and field distributions during pulsed-field activation

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4 Author(s)
Bræck, S. ; Department of Physics, University of Oslo, P.O. Box 1048 Blindern, 0316 Oslo, Norway ; Shantsev, D.V. ; Johansen, T.H. ; Galperin, Y.M.

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We calculate the temperature and magnetic field distributions in a bulk superconductor during the process of pulsed-field magnetic activation. The calculations are based on the heat diffusion equation with account of the heat produced by flux motion, and the critical state model with temperature dependent critical current density. For a given activation time, the total amount of trapped flux Φ is maximum for an optimal value Bopt of the maximal applied field. We analyze how Bopt and Φ depend on the material parameters and the field ramp rate. © 2002 American Institute of Physics.

Published in:
Journal of Applied Physics  (Volume:92 ,  Issue: 10 )

Date of Publication: Nov 2002

Page(s):
6235 - 6240
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.1515098
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Nov 2002

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