Performance test of a CuNb reinforced (Nb, Ti)3Sn coil fabricated by the react and wind method

Satoshi Awaji, Kazuo Watanabe, Gen Nishijima, Kohki Takahashi, Mitsuhiro Motokawa, Kazunori Jikihara, Hiroyuki Sugizaki, Junji Sakuraba

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)


In order to investigate the stress-strain and superconducting properties for a react and wind method under large electromagnetic stress states, a test coil with a large bore was fabricated using the highly strengthened CuNb/(Nb, Ti)3Sn wire. We found that the analysis on the basis of the bending and tensile strains successfully explains the obtained mechanical properties. The operation currents could be applied, until the electromagnetic stress and strain became about 340 MPa and 0.34%, respectively. This is mainly due to not only the strong mechanical property of CuNb/(Nb, Ti)3Sn wire but also the compression stress induced by the thermal contraction. As a result of the bending and tensile strain analysis for the critical current, the ratio of the quench current to the critical current was about 86% at 11 T and then decreased with decreasing magnetic fields.

Original languageEnglish
Pages (from-to)1697-1700
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number1
Publication statusPublished - 2002 Mar
Event17th Annual Conference on Magnet Technology - Geneva, Switzerland
Duration: 2001 Sept 242001 Sept 28


  • Critical current
  • High strength NbSn wire
  • React and wind method
  • Strain effect

ASJC Scopus subject areas

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


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