Fine Filament NbTi Conductors: Design and Large Scale Production

  • M. Thöner
Part of the Ettore Majorana International Science Series book series (EMISS, volume 53)


According to the present specifications, the accelerators and storage rings of the next generations like LHC, SSC, UNK, RHIC and ELOISATRON will require beam line magnets wound from keystoned cables consisting of strands with fine filaments. The specified filament diameters are between 6 µm down to about 2.5 µm in order to reduce field distortions due to persistent currents inside the filaments. In addition, the filament spacing must be large enough to avoid coupling between the filaments. The required distance depends on the matrix material and a safe choice is of the order of 1 µm for pure Cu. It can be made much smaller for Cu-alloys like CuNi and CuMn (in case of NbTi) or CuSn (for Nb3Sn).


Critical Current Density Filament Spacing Fine Filament Filament Diameter Current Carry Capacity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    A. Asner et al., to be published in the Proc. of the 11th International Magnet Technology, Tsukuba, August 28–Sept. 1, 1989Google Scholar
  2. 2.
    H. Krauth et al., submitted to “1990 International Industrial Symposium on the Super Collider”, Miami,Fl, March 14–16, 1990Google Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • M. Thöner
    • 1
  1. 1.Vacuumschmelze GmbHHanauF. R. Germany

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