Rearrangement of Superconducting Wires in Solenoidal Magnets

  • H. Moriyama
  • F. Sawa
  • H. Mitsui
  • M. Arata
  • S. Nishijima
  • T. Okada
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)

Abstract

The strain behavior of the superconducting solenoidal coil form has a close relationship with the training behavior of the quench current. This relationship can not be explained by means of models of wire motion, friction and resin cracking, which are known as mechanical disturbances, as the cause of quench. Therefore, a wire rearrangement model was proposed, where the accumulation of the microscopic displacements of the multiple turns of superconducting wire manifests itself in the strain behavior of the form. Based on this model, the strain energy of superconducting wire released by rearranging the turns was investigated theoretically and experimentally. As a result it was confirmed that the released energy exceeds the minimum quench energy, MQE, resulting in the instability of a sample coil. From this result, it is expected that the wire rearrangement model is useful for estimating the stability.

Keywords

Residual Strain Strain Behavior Strain Energy Release Innermost Layer Wire Tension 
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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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • H. Moriyama
    • 1
  • F. Sawa
    • 1
  • H. Mitsui
    • 1
  • M. Arata
    • 1
  • S. Nishijima
    • 2
  • T. Okada
    • 2
  1. 1.Toshiba CorporationYokohama, 230Japan
  2. 2.ISIR Osaka UniversityIbaraki, Osaka, 567Japan

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