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Fabrication of superconductor for the DPC-TJ coil.

Author(s) : AOKI N., OGAKI T., NOGUCHI K., MUKAI H., SHIMADA M., HAMAJIMA T., NAKAYAMA S., FUJIOKA T., TAKAHASHI Y., ANDO T., NISHI M., TSUJI H.

Type of article: Article

Summary

The authors describe the fabrication of the conductor for a forced-cooled superconducting coil (DPC-TJ) with the first conduit, which plays a role in sealing the supercritical helium from the vacuum. Because the DPC-TJ coil has a high average current density in the winding area, a (niobium-titanium)3-tin strand formed by the niobium tube method was selected. As a result of development work, a strand could be fabricated which met the following requirements: critical current density higher than 600 amperes/mm2 at 12 T and residual resistivity ratio value higher than 50. A fabrication line for the cable-in-conduit conductors using the roll-forming method was developed. It was demonstrated that large and long conductors could be fabricated for future fusion reactors.

Details

  • Original title: Fabrication of superconductor for the DPC-TJ coil.
  • Record ID : 1994-1399
  • Languages: Japanese
  • Source: Cryog. Eng./Cryogenics - vol. 27 - n. 3
  • Publication date: 1992

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