Development of vapor-cooled HTS-copper 6-kA current lead incorporating operation in the current-sharing mode

Haigun Lee, Ho Min Kim, Yukikazu Iwasa, Keeman Kim, Paul Arakawa, Greg Laughon

Research output: Contribution to journalArticle

5 Citations (Scopus)


This paper presents the design and performance results of a pair of 6-kA high-temperature superconducting (HTS)-copper current leads, in which, over a short length at the warm end (e.g., 77 K) of each HTS section, comprised of paralleled Bi-2223/Ag-Au tapes, is operated in the current-sharing mode. Because of their reliance on vapor cooling, the leads are applicable only to liquid helium-cooled superconducting magnets such as those used in high-energy physics accelerators and fusion machines. The experimental measurements have demonstrated that key performance data of the new 6-kA HTS-copper leads agree reasonably well with those expected from design.

Original languageEnglish
Pages (from-to)7-14
Number of pages8
Issue number1
Publication statusPublished - 2004 Jan 1
Externally publishedYes



  • Bi-2223/Ag-Au tapes
  • High-temperature superconducting (HTS) current lead

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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