Developments of high-Tc superconducting current feeders for a large-scale superconducting coil system

T. Mito, Keisuke Maehata, M. Mizokami, Kenji Ishibashi, M. Takeo, A. Iwamoto, N. Hirano, T. Shintomi, K. Kimura, M. Sawamura, S. Yamada, S. Satoh, O. Motojima

Research output: Contribution to journalArticle

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Abstract

A large-scale superconducting coil system, which is an essential technology for a fusion reactor, requires large capacity and high performance current feeders from the power supplies at the room temperature to the superconducting coils at the operating temperature, which is usually liquid helium temperature at present. The superconducting current feeders are being considered as a promising application of a high temperature superconductor (HTS), which can satisfy the requirements of a large current capacity and a low heat in-leak, simultaneously. To study the feasibility of the HTS current feeders, a melt-textured YBCO bulk superconductor was selected as a candidate material because of its high current transport characteristics. The YBCO disk fabricated by quench and melt growth process was cut into a short sample with the cross section of 7 mm × 7 mm and the length of 40 mm and was mounted on the copper bars to perform the actual large current transport tests. The sample could be successfully excited up to 20 kA at 4.2 K and 10 kA at 77 K. These performance test results and the further R&D items for the HTS current feeders are discussed.

Original languageEnglish
Pages (from-to)1940-1945
Number of pages6
JournalJournal of Nuclear Materials
Volume258-263
Issue numberPART 2 B
DOIs
Publication statusPublished - Jan 1 1998

Fingerprint

feeders
High temperature superconductors
coils
high temperature superconductors
Helium
Fusion reactors
Temperature
Superconducting materials
Copper
fusion reactors
performance tests
Liquids
operating temperature
liquid helium
power supplies
high current
Superconducting coils
copper
heat
requirements

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

Developments of high-Tc superconducting current feeders for a large-scale superconducting coil system. / Mito, T.; Maehata, Keisuke; Mizokami, M.; Ishibashi, Kenji; Takeo, M.; Iwamoto, A.; Hirano, N.; Shintomi, T.; Kimura, K.; Sawamura, M.; Yamada, S.; Satoh, S.; Motojima, O.

In: Journal of Nuclear Materials, Vol. 258-263, No. PART 2 B, 01.01.1998, p. 1940-1945.

Research output: Contribution to journalArticle

Mito, T, Maehata, K, Mizokami, M, Ishibashi, K, Takeo, M, Iwamoto, A, Hirano, N, Shintomi, T, Kimura, K, Sawamura, M, Yamada, S, Satoh, S & Motojima, O 1998, 'Developments of high-Tc superconducting current feeders for a large-scale superconducting coil system', Journal of Nuclear Materials, vol. 258-263, no. PART 2 B, pp. 1940-1945. https://doi.org/10.1016/S0022-3115(98)00341-9
Mito, T. ; Maehata, Keisuke ; Mizokami, M. ; Ishibashi, Kenji ; Takeo, M. ; Iwamoto, A. ; Hirano, N. ; Shintomi, T. ; Kimura, K. ; Sawamura, M. ; Yamada, S. ; Satoh, S. ; Motojima, O. / Developments of high-Tc superconducting current feeders for a large-scale superconducting coil system. In: Journal of Nuclear Materials. 1998 ; Vol. 258-263, No. PART 2 B. pp. 1940-1945.
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