Application of prebending effect to triplet cables using bronze-route Nb3Sn strands

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


An application of the prebending effect to a cabling process using Nb 3Sn strands was demonstrated. The prebending effect is the enhancement effect of superconducting properties due to the repeated prebending treatment for practical bronze-route Nb3Sn wires. CuNb/Nb 3Sn and Cu/Nb3Sn strands were applied prebending treatment using 10 fixed pulleys with 0.8% prebending strain. Four kinds of triplets, i.e., prebent CuNb/Nb3Sn, no-prebent CuNb/Nb3Sn, prebent Cu/Nb3Sn and no-prebent Cu/Nb3Sn triplets were fabricated. Critical currents were measured for the four kinds of triplets in magnetic fields up to 11 T at 4.2 K. The obvious critical current enhancement due to the prebending effect was maintained for the prebent CuNb/Nb3Sn triplet. The results imply that the prebending treatment for high-strength Nb 3Sn strands is applicable to the cable conductor fabrication.

Original languageEnglish
Pages (from-to)2595-2598
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2007 Jun


  • Critical current
  • CuNb/NbSn
  • High-strength
  • Prebending effect
  • Triplet cable

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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