Development of pre-bent high-strength Nb3Sn cable with stainless-steel reinforcement strands

Gen Nishijima, Hidetoshi Oguro, Satoshi Awaji, Hirokazu Tsubouchi, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A 7-strand Nb3Sn superconducting cable, which consists of three pre-bent CuNb/Nb3Sn strands, three stainless-steel (SS) strands, and a center SS strand, was fabricated. 2.5 turns of the cable was wound on a 262-nim diameter GFRP bobbin A triplet consisting of three pre-bent CuNb/Nb 3 Sn strands was also tested for comparison. The reinforcement effect of stainless-steel strands in a cable was investigated to develop a high-strength large-current superconducting cable. The hoop stress test result indicated that the stainless-steel reinforced CuNb/Nb3 Sn cable showed better performance than the CuNb/Nb3 Sn triplet under the hoop stress, because the stainless-steel strands reduced the hoop stress on CuNb/Nb3 Sn strands. Furthermore, the solder impregnation of the cable, which made the seven strands a monolithic conductor, improved its performance.

Original languageEnglish
Article number5067277
Pages (from-to)1112-1115
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2009 Jun


  • CuNb/NbSn
  • High-strength
  • Pre-bending effect
  • Superconducting cable


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