Rutherford flat cable composed of CuNb-reinforced Nb3Sn strands

Kazuo Watanabe, Hidetoshi Oguro, Satoshi Awaji, H. Kumakura, M. Sugimoto, H. Tsubouchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

A Rutherford flat cable that is applicable for operational currents up to 1000 A at 13-14 T was developed using a bronze-processed high-strength Nb 3Sn strand with CuNb reinforcement (CuNb/Nb3Sn). The critical current for a 0.8-mm diameter CuNb/Nb3Sn strand is 98 A at 14 T and 4.2 K in the residual strain state. A test coil using the CuNb/Nb 3Sn Rutherford flat cable composed of 16 CuNb-reinforced Nb 3Sn strands was fabricated. We measured the critical current properties of the Rutherford test coil and obtained an excellent critical current of 1840 A at 14 T and 4.2 K. By using the strain gauges attached onto the stainless-steel reinforcement tape that was co-wounded with the Rutherford flat cable, it was found that a 300-MPa hoop stress at 4.2 K was applied to the CuNb/Nb3Sn strand. This implies that the critical current for a CuNb/Nb3Sn strand is enhanced to be 115 A at 14 T and 4.2 K through the stress-strain effect of the critical current at 300 MPa.

Original languageEnglish
Title of host publicationAdvances in Cryogenic Engineering - Transactions of the International Cryogenic Materials Conference, ICMC 2013
PublisherAmerican Institute of Physics Inc.
Pages186-191
Number of pages6
ISBN (Print)9780735412040
DOIs
Publication statusPublished - 2014 Jan 1
Event2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, ICMC 2013 - Anchorage, AK, United States
Duration: 2013 Jun 172013 Jun 21

Publication series

NameAIP Conference Proceedings
Volume1574 60
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, ICMC 2013
CountryUnited States
CityAnchorage, AK
Period13/6/1713/6/21

Keywords

  • Critical current
  • Rutherford flat cable
  • Stress-strain effect

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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