Thermal stability of reinforced Nb3Sn composite superconductor under cryocooled conditions

Tsuyoshi Yamamoto, Kenji Watanabe, Satoru Murase, Gen Nishijima, Kazuo Watanabe, Akio Kimura

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Several types of reinforced Nb3Sn wires have been developed to prevent reduction of superconducting properties by applying a strong electromagnetic force. To fabricate a cryocooled magnet using those reinforced wires, we experimentally measured the minimum quench energy (MQE) under cryocooled conditions of some reinforced Nb3Sn wires. As a result, it became clear that thermal stability expressed as MQE was controlled by the temperature margin between the temperature of the operating condition and the transition temperature from superconductivity to normal. Using the FEM analysis, it was realized that the cause of the decline in thermal stability for the reinforced wires was the low thermal conductivity of the reinforced materials.

Original languageEnglish
Pages (from-to)687-693
Number of pages7
Issue number10
Publication statusPublished - 2004 Oct


  • Cryocooling
  • MQE
  • Reinforced NbSn wire

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)


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