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Transient analysis and burnout of high-temperature superconducting current leads.

Author(s) : SEOL S. Y., HULL J. R.

Type of article: Article

Summary

Leads composed of high-temperature superconductor only and of high-temperature superconductor sheathed by pure silver or silver alloy are investigated numerically for temperature-dependent properties and analytically for temperature-independent properties. With high-current densities, the leads heat adiabatically. For a fixed shape factor, low-current densities are desired to achieve long burnout times. To achieve a low helium boil-off rate in the superconducting state without danger of burnout, there is a preferred temperature dependence for thermal conductivity, and silver alloy sheaths are preferred to pure silver sheaths. However, for a given current density, pure silver sheaths take longer to burn out.

Details

  • Original title: Transient analysis and burnout of high-temperature superconducting current leads.
  • Record ID : 1994-2093
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 10
  • Publication date: 1993/10

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