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Development of a 20 kA current feedthrough using YBCO bulk conductors.

[In Japanese. / En japonais.]

Author(s) : MAEHATA K., ISHIBASHI K., SHINTOMI T., et al.

Type of article: Article

Summary

In the phase II experiment of the large helical device, it is planned to operate the helical coils at 1.8 K by employing pressurized superfluid cooling to raise the magnetic field to 4 T with 17.3 kA. It is important to develop a 20 kA-class current feedthrough into the 1.8 K region. Rectangle-shaped YBCO bulk conductors measuring 20 mm wide, 140 mm long and 10 mm thick were manufactured from square-pillar-shaped YBCO bulk materials for a 20 kA current. Experiments of current feeding into the 1.8 K region were carried out by operating the 20 kA current feedthrough. In the experiments, the transport current was kept at 20 kA for longer than 1,200 s.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2005-1105
  • Languages: Japanese
  • Source: Journal of the Cryogenic Society of Japan - vol. 39 - n. 3
  • Publication date: 2004

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