Propagation velocity of normal zones in a SC braid

K. Ishibashi, M. Wake, M. Kobayashi, A. Katase

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14 Citations (Scopus)

Abstract

Propagation velocities of normal zones are obtained experimentally in a superconducting (SC) braid which is wound into a coil to simulate the SC pulsed dipole magnet for a synchrotron from the viewpoint of cooling. A numerical calculation to determine this velocity is carried out by using a modified thermal conduction equation. The equation eliminates a troublesome problem on the boundary condition reported previously by defining a new variable of the square of the heat flux along the conductor. A velocity dependent correction factor is used for cooling to take account of the transient effect. The values calculated are a representation of the experimental dependence of the velocity on both current and magnetic field and this indicates that the correction factor is applicable to the winding of the braid if modified properly. Discussion is also made on the transient cooling in the coil.

Original languageEnglish
Pages (from-to)467-471
Number of pages5
JournalCryogenics
Volume19
Issue number8
DOIs
Publication statusPublished - Aug 1979

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Physics and Astronomy(all)

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