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Two-dimensional normal zone propagation in BSCCO-2223 pancake coils.

Author(s) : LIM H., IWASA Y.

Type of article: Article

Summary

The authors present the results of an experimental and analytical study of two-dimensional normal zone propagation in pancake test coils, wound with silver-sheathed BSCCO-2223 tapes. Two test coils were studied in detail, one having three and the other eight layers. Each test coil was housed in an adiabatic environment whose temperature (20-70 K) was controlled and maintained by a two-stage Gifford-McMahon cryocooler and placed in a background field (0-6 T) generated by a Bitter magnet. A normal zone propagation code was developed to accurately simulate the voltage and temperature responses of each coil for both quenching and recovering events. The code solves the nonlinear transient heat diffusion equation in two-dimensional cylindrical coordinates with a finite difference method.

Details

  • Original title: Two-dimensional normal zone propagation in BSCCO-2223 pancake coils.
  • Record ID : 1998-2684
  • Languages: English
  • Source: Cryogenics - vol. 37 - n. 12
  • Publication date: 1997/12

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