Cryogenfree high field superconducting magnets

K. Watanabe, M. Motokawa

Research output: Contribution to journalConference articlepeer-review

7 Citations (Scopus)


A cryogenfree superconducting magnet (CSM) has been realized using Bi-system high temperature superconducting current leads. Although conventional low temperature superconducting magnets wound with NbTi and Nb3Sn wires are utilized, liquid helium is no longer required for a magnet operation. Up to now, various kinds of cryogenfree superconducting magnets such as a high field 15 T-CSM, a large bore 5 T-CSM with a 300 mm room temperature bore, and a unique high field X-ray diffraction apparatus combined with a split-pair 5 T-CSM have been successfully developed. Moreover, a split-pair CSM for neutron scattering and a high temperature operation CSM at 20 K employing Ag-sheathed Bi2223 tape have been demonstrated. It is expected that the further rapid progress in a cryogenfree superconducting magnet will be made and high field applications will be enlarged in the near future.

Original languageEnglish
Pages (from-to)489-494
Number of pages6
JournalIEEE Transactions on Applied Superconductivity
Issue number1
Publication statusPublished - 2000
Externally publishedYes
EventThe 16th International Conference on Magnet Tehnolopgy - Tallahassee, FL, USA
Duration: 1999 Sep 261999 Oct 2

ASJC Scopus subject areas

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


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