Development of HTS magnets

Kichiji Hatanaka, Mitsuhiro Fukuda, Keita Kamakura, Hiroshi Ueda, Tetsuhiko Yorita, Takane Saito, Yuusuke Yasuda, Takeo Kawaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


We have been developing magnets utilizing hightemperature superconducting (HTS) wires for this decade. We built three model magnets, a mirror coil for an ECR ion source, a set of coils for a scanning magnet and a super-ferric dipole magnet to generate magnetic field of 3 T. They were excited with AC/pulse currents as well as DC currents. Recently we fabricated a cylindrical magnet for a practical use which polarizes ultracold neutrons (UCN). The field strength at the center is higher than 3.5 T which is required to fully polarize 210 neV neutrons. The magnet was used to polarized UCN generated by the RCNP-KEK superthermal UCN source. One dipole magnet is under fabrication, which is used as a switching magnet after the RCNP ring cyclotron and is planned to be excited by pulse currents. It becomes possible to deliver beams to two experimental halls by time sharing.

Original languageEnglish
Title of host publication6th International Particle Accelerator Conference, IPAC 2015
PublisherJoint Accelerator Conferences Website (JACoW)
Number of pages3
ISBN (Electronic)9783954501687
Publication statusPublished - 2015
Externally publishedYes
Event6th International Particle Accelerator Conference, IPAC 2015 - Richmond, United States
Duration: May 3 2015May 8 2015


Other6th International Particle Accelerator Conference, IPAC 2015
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics


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