Research and development for upgrading a cryogen-free 18 T superconducting magnet

Kotaro Marukawa, Satoshi Hanai, Hiroshi Miyazaki, Kazuo Watanabe, Satoshi Awaji, Hidetoshi Oguro

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We have studied for upgrading an 18 T super-conducting magnet conductively cooled by a GM/JT cryocooler at Tohoku University in Japan to a 23 T superconducting magnet. In order to upgrade the cryogen-free high field superconducting magnet up to 23 T, YBa 2}Cu 3O 7(Y123)coated conductor insert is intended for replacing the insert using Bi 2Sr 2Ca 2}Cu 3}O 10}({Bi2223) tape with stainless steel reinforcement tape. We have produced double pancake coils with almost the same size as a double pancake coil for the Bi2223 insert, and have investigated the performance of the coils. And the design of the double pancake coil was reviewed from the result of the R&D coils.

Original languageEnglish
Article number6101599
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2012 Jun 25


  • Degradation
  • YBCO coated conductor
  • high magnetic field
  • radial tensile stress

ASJC Scopus subject areas

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


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