Recent Development of SSC Cable in Furukawa

  • M. Ikeda
  • H. Ii
  • S. Meguro
  • K. Matsumoto

Abstract

After the First International Industrial Symposium on the Super Collider, the following developmental work on NbTi superconducting Rutherford cable for the Superconducting Super Collider (SSC) was done at Furukawa Electric. (1) Improvement in the critical current density of the SSC wire, based on volume production: The manufacturing process enabling us to achieve the critical current density of more than 3,000 A/mm2 at 5 T is being established. (2) Development of large keystone angled cable to be used for modified SSC dipole magnets: Critical current degradation due to cabling is nearly proportional to cross-sectional area reduction of strands. A 5-cm bore, 1-m long dipole magnet having no wedge inside the coils was fabricated by using the large keystone angled cable and successfully tested by KEK. (3) Magnetization measurements on the SSC wire samples: The long term magnetization decay imposing a serious problem in the accelerator design is possibly associated with flux creep phenomenon occurring in a proximity-coupled matrix between NbTi filaments.

Keywords

Total Heat Boulder Isobe Keystone 

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References

  1. 1.
    M. Ikeda, “Development of SSC cable in Furukawa,” Supercollider 1, 243 (Plenum Publishing Corporation, 1989 )Google Scholar
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    H. Ii, Y. Nagasu, M. Ikeda, T. Shintomi and H. Hirabayashi, “Trial-fabrication of superconducting Rutherford type cable having large keystone angle,” 11th International Conference on Magnet Technology, MA-01 (Tsukuba, 1989 )Google Scholar
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    T. Shintomi, A. Terashima, H. Hirabyashi, M. Ikeda and H. Ii, “Development of large keystone angle cable for dipole magnet with ideal arch structure,” International Cryogenic Materials Conference, HX-08 (Los Angeles, 1989 )Google Scholar
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • M. Ikeda
    • 1
  • H. Ii
    • 1
  • S. Meguro
    • 1
  • K. Matsumoto
    • 2
  1. 1.Superconducting Products DepartmentThe Furukawa Electric Co., LtdNishi-ku,YokohamaJapan
  2. 2.Yokohama R&D LaboratoriesThe Furukawa Electric Co., LtdNishi-ku, YokohamaJapan

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