Reinforcing stabilizers for large scale and/or high field superconducting magnets

K. Noto, M. Matsukawa, K. Katagiri, A. Iwabuchi, Tetsuya Sato, K. Watanabe, H. Kawabe, T. Fukutsuka, Y. Monju

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

It is desired to develop a high-strength high-conductivity material for reinforcing composite superconductors which will be employed in large-scale and/or high-field superconducting magnets in emerging large-scale projects such as fusion magnets, SMES magnets, hybrid magnets, and so on. A review of our decade long study of reinforcing stabilizers, and recent results on CuNb composite wires and high-purity Ta wires are reported. Mechanical and electrical properties are reported for CaO crucible melted and drawn CuNb composite wires and for heavily cold worked high-purity Ta wires. Tensile tests at room temperature show a yield stress of about 556 MPa even after annealing at 750°C for 1 h for CuNb composite wires and 0.2% proof stress of about 666 MPa for the Ta wires. Resistivity at 4.2 K is about 0.25 μ ω cm for CuNb wires and about 0.40 μω cm for the Ta wires, respectively at a field of 15 T. It is concluded that the CuNb composite wires, the high-purity Ta wires and the Al2O3 dispersion-strengthened copper are suitable as a reinforcing stabilizer for conductors of large-scale and/or high-field superconducting magnets.

Original languageEnglish
Pages (from-to)455-462
Number of pages8
JournalFusion Engineering and Design
Volume20
Issue numberC
DOIs
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

Superconducting magnets
Wire
Composite materials
Magnets
Crucibles
Superconducting materials
Yield stress
Copper
Electric properties
Fusion reactions
Annealing
Mechanical properties

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Nuclear Energy and Engineering
  • Civil and Structural Engineering
  • Mechanical Engineering

Cite this

Reinforcing stabilizers for large scale and/or high field superconducting magnets. / Noto, K.; Matsukawa, M.; Katagiri, K.; Iwabuchi, A.; Sato, Tetsuya; Watanabe, K.; Kawabe, H.; Fukutsuka, T.; Monju, Y.

In: Fusion Engineering and Design, Vol. 20, No. C, 1993, p. 455-462.

Research output: Contribution to journalArticle

Noto, K, Matsukawa, M, Katagiri, K, Iwabuchi, A, Sato, T, Watanabe, K, Kawabe, H, Fukutsuka, T & Monju, Y 1993, 'Reinforcing stabilizers for large scale and/or high field superconducting magnets', Fusion Engineering and Design, vol. 20, no. C, pp. 455-462. https://doi.org/10.1016/0920-3796(93)90079-W
Noto, K. ; Matsukawa, M. ; Katagiri, K. ; Iwabuchi, A. ; Sato, Tetsuya ; Watanabe, K. ; Kawabe, H. ; Fukutsuka, T. ; Monju, Y. / Reinforcing stabilizers for large scale and/or high field superconducting magnets. In: Fusion Engineering and Design. 1993 ; Vol. 20, No. C. pp. 455-462.
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