Design consideration and optimization procedure for a no-insulation multi-width REBCO magnet

Y. G. Kim, S. Hahn, K. L. Kim, D. G. Yang, H. G. Lee

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17 Citations (Scopus)


This paper reports the optimization procedure for a no-insulation (NI) multi-width (MW) REBCO magnet, which enables the fabrication of a highly compact and competitively priced superconducting magnet. In order to identify the design considerations for the NI-MW magnet, the electromagnetic performances of 3 different magnets were investigated using the finite element method (FEM). Based on the comparison results, it was verified that the critical current distribution-factor (CCD-factor), which is the ratio of the highest pancake critical current (Ic) to the lowest pancake Ic within the magnet, should be close to 1.00 for the MW configuration to be most effective. In the optimized MW magnet, the center Bz (7.54 T) remarkably exhibited an ∼ 51% increase compared to the 4-mm single width magnet (5.00 T). Furthermore, the CCD-factor of the optimized MW magnet was 1.04, which is quite close to 1.00, sufficiently demonstrating the validity of the optimization process and result.

Original languageEnglish
Pages (from-to)1134-1138
Number of pages5
JournalCurrent Applied Physics
Issue number10
Publication statusPublished - 2015 Oct 4

Bibliographical note

Funding Information:
This work was supported by the Materials and Components Technology Development Program of KEIT [10053590, Development of MgB2 wire and coil with high critical current and long length for superconducting medical electric power equipment].

Publisher Copyright:
© 2015 Elsevier B.V.All rights reserved.


  • CCD-factor
  • HTS magnet
  • Multi-width
  • No-insulation
  • Optimization

ASJC Scopus subject areas

  • General Materials Science
  • General Physics and Astronomy


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