論文

査読有り
2014年11月

Experimental and numerical investigation of screening currents induced in a Bi-2223/Ag double pancake coil for space applications

SUPERCONDUCTOR SCIENCE & TECHNOLOGY
  • Y. Nagasaki
  • ,
  • T. Nakamura
  • ,
  • I. Funaki
  • ,
  • Y. Ashida
  • ,
  • H. Yamakawa

27
11
開始ページ
115005
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/0953-2048/27/11/115005
出版者・発行元
IOP PUBLISHING LTD

We modelled the screening currents (I-s) induced in high-temperature superconducting (HTS) coils to develop a method for the characterization and design of HTS magnets for space applications. The analysis made use of so-called percolation depinning and flux creep models to describe the current density versus the electric field in HTS tapes. We compared the model results with the experimental data obtained from a Bi-2223/Ag double pancake coil. The experimental residual magnetization due to the I-s in the Bi-2223/Ag coil can be effectively modelled, assuming an equivalent loop length of approximately 9 mm for the I-s in the coil. The values calculated from the method quantitatively agreed with the results for various experimental conditions. We also successfully modelled the hysteresis of the magnetization due to the I-s. These results demonstrate the validity of our model for the I-s, which considers the effects of flux creep and smaller I-s loops in the multi-filamentary Bi-2223/Ag tape.


リンク情報
DOI
https://doi.org/10.1088/0953-2048/27/11/115005
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000346196100006&DestApp=WOS_CPL
ID情報
  • DOI : 10.1088/0953-2048/27/11/115005
  • ISSN : 0953-2048
  • eISSN : 1361-6668
  • Web of Science ID : WOS:000346196100006

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