Performance Test of Cryogen-Free Bi-2223 HTS Dipole Magnet for Beam Line Switching

Jun Yoshida, Atsushi Hashimoto, Hitoshi Mitsubori, Yukio Mikami, Keiichi Watazawa, Kichiji Hatanaka, Hiroshi Ueda, Mitsuhiro Fukuda, Tetsuhiko Yorita, Eisaku Ueno, Takeshi Kato

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We have developed a Bi-2223 high-temperature superconducting dipole magnet for beam line switching at the cyclotron facility of the Research Center for Nuclear Physics, Osaka University. Exit beam lines are periodically switched by increasing and decreasing the magnetic field between 0 and 1.6 T with a switching time of 10 s. The magnet is equipped with two sets of Bi-2223 coil assemblies, which are conduction cooled by two 10-K Gifford-McMahon cryocoolers. We evaluated the superconducting property of the Bi-2223 coil assemblies in liquid nitrogen before installation in the cryostat. There were no degradation in wire performance during the assembly process. Magnetic field, strains, and temperatures of the coil assembly were investigated for performance verification after the magnet fabrication. The magnetic field and the temperatures meet specifications, and the deformation of the coil assembly is considered to be successfully suppressed by reinforcing structure. Furthermore, from a viewpoint of temperature, it is indicated that the magnet can make switching time and cycle time faster than that of the specified operation.

Original languageEnglish
Article number7404252
JournalIEEE Transactions on Applied Superconductivity
Volume26
Issue number3
DOIs
Publication statusPublished - Apr 1 2016
Externally publishedYes

Fingerprint

performance tests
Magnets
magnets
coils
dipoles
assembly
assemblies
Magnetic fields
magnetic fields
cryostats
nuclear physics
Nuclear physics
Temperature
liquid nitrogen
Cryostats
installing
cyclotrons
temperature
Cyclotrons
specifications

Keywords

  • Accelerator magnets
  • high-temperature superconductors
  • superconducting coils
  • superconducting magnets

ASJC Scopus subject areas

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

Cite this

Yoshida, J., Hashimoto, A., Mitsubori, H., Mikami, Y., Watazawa, K., Hatanaka, K., ... Kato, T. (2016). Performance Test of Cryogen-Free Bi-2223 HTS Dipole Magnet for Beam Line Switching. IEEE Transactions on Applied Superconductivity, 26(3), [7404252]. https://doi.org/10.1109/TASC.2016.2528543

Performance Test of Cryogen-Free Bi-2223 HTS Dipole Magnet for Beam Line Switching. / Yoshida, Jun; Hashimoto, Atsushi; Mitsubori, Hitoshi; Mikami, Yukio; Watazawa, Keiichi; Hatanaka, Kichiji; Ueda, Hiroshi; Fukuda, Mitsuhiro; Yorita, Tetsuhiko; Ueno, Eisaku; Kato, Takeshi.

In: IEEE Transactions on Applied Superconductivity, Vol. 26, No. 3, 7404252, 01.04.2016.

Research output: Contribution to journalArticle

Yoshida, J, Hashimoto, A, Mitsubori, H, Mikami, Y, Watazawa, K, Hatanaka, K, Ueda, H, Fukuda, M, Yorita, T, Ueno, E & Kato, T 2016, 'Performance Test of Cryogen-Free Bi-2223 HTS Dipole Magnet for Beam Line Switching', IEEE Transactions on Applied Superconductivity, vol. 26, no. 3, 7404252. https://doi.org/10.1109/TASC.2016.2528543
Yoshida, Jun ; Hashimoto, Atsushi ; Mitsubori, Hitoshi ; Mikami, Yukio ; Watazawa, Keiichi ; Hatanaka, Kichiji ; Ueda, Hiroshi ; Fukuda, Mitsuhiro ; Yorita, Tetsuhiko ; Ueno, Eisaku ; Kato, Takeshi. / Performance Test of Cryogen-Free Bi-2223 HTS Dipole Magnet for Beam Line Switching. In: IEEE Transactions on Applied Superconductivity. 2016 ; Vol. 26, No. 3.
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