A new reinforced winding of Bi-2212 coils for 30 T class superconducting magnets

T. Wakuda, M. Okada, S. Awaji, K. Watanabe

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


We proposed a new reinforcing technique against a huge electromagnetic hoop stress for HTS pancake coils in a high magnetic field with improving their strain tolerance. Two react and wind type Bi-2212 test pancake coils were prepared; one was a standard coil and another was a compressively pre-strained coil. Their mechanical and transport current properties were investigated in liquid Helium (T = 4.2 K) and a magnetic field of 10 T. The mechanical properties of the two were almost the same, however, the pre-strained coil could transport current without any degradation up to a strain of 0.3% though a significant degradation occurred at >0.18% for the standard coil.

Original languageEnglish
Pages (from-to)1293-1296
Number of pages4
JournalPhysica C: Superconductivity and its applications
Publication statusPublished - 2001 Aug


  • High field HTS magnet
  • Hoop strain
  • Reinforcement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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