Cryogen-free 23 T superconducting magnet with a 7.5 T YBa 2Cu3O7 insert coil

Kazuo Watanabe, Satoshi Awaji, Gen Nishijima, Satoshi Hanai, Michitaka Ono

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


In order to develop a cryogen-free high-field superconducting magnet generating over 20 T a YBa2Cu3O7 (Y123)-coated conductor insert coil is used to enhance a cryogen-free 18T superconducting magnet. The Y123 tape does not require stainless steel reinforcement. The Y123 insert coil which is almost the same size as the current Bi2Sr 2Ca2Cu3O10 (Bi2223) insert coil is designed to generate 7.5 T at 187 A. It is able to achieve this since without stainless steel reinforcement the number of turns can be greatly increased. A cryogen-free superconducting magnet can achieve a static magnetic field of 23 T which is higher than that generated by practical superconducting magnets using liquid helium.

Original languageEnglish
Article number113001
JournalApplied Physics Express
Issue number11
Publication statusPublished - 2009 Nov


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