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Performance tests of bismuth-2223 pancake magnet.

Author(s) : KUMAKURA H., KITAGUCHI H., TOGANO K., WADA H., OHKURA R., UEYAMA M., HAYASHI K., SATO K.

Type of article: Article

Summary

A bismuth-2223 pancake magnet was tested at various temperatures using a Gifford-McMahon type cryocooler in order to investigate the applicability of the bismuth-2223 magnet to the magnetic separation system. The magnet consisted of 17 double pancake coils made by a powder-in-tube method. The dimension of the magnet was 79 millimeters bore, 130 millimeters outer diameter and 130 millimeters height. At 30 K, the maximum operating engineering current density was 8600 A/cm2 which generated a field of 1.0 T at the center of the magnet. At 20 K, the authors repeated the excitation of the magnet up to 1.1 T at several excitation speeds. At a speed of 2 T/minute, the temperature of the magnet slighty increased with increasing the number of cycles, but the temperature satured at cycles of about 8. These results indicate that a bismuth-2223 pancake magnet is the promising candidate for the magnetic separation system.

Details

  • Original title: Performance tests of bismuth-2223 pancake magnet.
  • Record ID : 1999-3349
  • Languages: English
  • Source: Cryogenics - vol. 38 - n. 6
  • Publication date: 1998/06

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