10 T generation by an epoxy impregnated GdBCO insert coil for the 25 T-cryogen-free superconducting magnet

Satoshi Awaji, Hidetoshi Oguro, Kazuo Watanabe, Satoshi Hanai, Hiroshi Miyazaki, Taizo Tosaka, Shigeru Ioka, Shinji Fujita, Masanori Daibo, Yasuhiro Iijima

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

A GdBa2Cu3Oy (Gd123) insert coil for the 25 T cryogen-free superconducting magnet was constructed, installed and tested. We succeeded in the generation of 10 T using a Gd123 insert coil without a background field. The temperature of the Gd123 coil increased from 4.5 K gradually and reached about 5.5 K, when the magnet was energized with 0.036 A/s, which corresponds to a 1 hour energizing mode. The calculated and measured central magnetic fields are 10.61 T and 10.15 T, respectively, because of the magnetization current effect in RE123 tape. The maximum heat load by the AC-losses estimated from the temperature rise is about 3 W, which is consistent with the slab model combined with tape stacking effect.

Original languageEnglish
Article number055010
JournalSuperconductor Science and Technology
Volume29
Issue number5
DOIs
Publication statusPublished - 2016 Apr 5

Keywords

  • AC-loss
  • REBCO
  • cryogen-free
  • shielding current
  • superconducting magnet

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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