Critical current of mechanically loaded Nb 3Sn superconducting multi-strand cable

K. Seo, A. Nishimura, Y. Hishinuma, K. Nakamura, T. Takao, G. Nishijima, K. Watanabe, K. Katagiri

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We developed a novel critical current and stability experimental setup utilizing a closed electric circuit with a multi-stand superconducting cable. The feature of this setup is transverse mechanical loading implied to the multi-strand cable in the transverse direction. It was reported that Lorentz force caused degradation of critical current in the ITER-TFMC conductor. Furthermore, these phenomena were only observed in the ITER full size conductors with large Lorentz forces under high magnetic field. The advantage of our setup is a critical current measurement with comparable mechanical stress under high magnetic field. Employing an inductive critical current measurement technique, we conducted the experiment with transport current of around 10 kA without any power supply nor current lead. As experimental results, we observed significant degradation due to compressive stress of around 30 MPa. This degradation was found irreversible, when it was unloaded.

Original languageEnglish
Pages (from-to)1390-1393
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2007 Jun
Externally publishedYes


  • CICC
  • Critical current
  • Nb Sn
  • Superconductor
  • Transverse load

ASJC Scopus subject areas

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


Dive into the research topics of 'Critical current of mechanically loaded Nb 3Sn superconducting multi-strand cable'. Together they form a unique fingerprint.

Cite this