Plasma and Fusion Research

Volume 17, 2405006 (2022)

Regular Articles

Test of 10 kA-Class HTS WISE Conductor in High Magnetic Field Facility
Yoshiro NARUSHIMA1,2), Yoshiro TERAZAKI1), Yuta ONODERA1), Nagato YANAGI1,2), Naoki HIRANO1), Shinji HAMAGUCHI1), Hirotaka CHIKARAISHI1), Tomosumi BABA1) and Junichi MIYAZAWA1,2)
1)
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
2)
The Graduate University for Advanced Studies, SOKENDAI, 322-6 Oroshi-cho, Toki, Gifu 509-5292, Japan
(Received 16 December 2021 / Accepted 1 February 2022 / Published 18 March 2022)

Abstract

High-temperature superconducting (HTS) conductor is a feasible candidate to make magnets for the next generation fusion devices because of its higher temperature margins and higher critical current in a high magnetic field in comparison to low-temperature superconducting (LTS) conductors. The recently proposed concept of the HTS-WISE (Wound and Impregnated Stacked Elastic tapes) conductor was studied to clarify its characteristics under certain magnetic fields. The WISE conductor, including 30-stacked REBCO (Rare-Earth Barium Copper Oxide) tapes, was fabricated and energized in a 9-T test facility which produced the condition of magnetic field B = 5 - 8 T and a temperature T = 30 - 50 K. Obtained critical currents (5.4 - 10.8 kA) increased with a decreasing magnetic field and/or temperature under the condition of T > 40 K. The maximum current of 16.9 kA was obtained at T = 30 K, which corresponded to the engineering current density jE = 60 A/mm2. Experimental results showed qualitative agreement with numerical calculations of the critical current. We confirmed the operation of the WISE conductor under a high magnetic field and low temperature.

Keywords

HTS, REBCO, helical fusion reactor, WISE

DOI: 10.1585/pfr.17.2405006

Full Text

PDF format (1.7Mbytes) PDF Download

References

  • [1] D.C. Larbalestier et al., Nat. Mater. 13, 375 (2014).
  • [2] M. Leghissa et al., Physica C 372-376, 1688 (2002).
  • [3] J.D. Weiss et al., Supercond. Sci. Technol. 30, 014002 (2017).
  • [4] N. Yanagi et al., Nucl. Fusion 55, 053021 (2015).
  • [5] T. Mito et al., IEEE Trans. Appl. Supercond. 31, 4202505 (2021).
  • [6] S. Matsunaga et al., IEEE Trans. Appl. Supercond. 30, 4601405 (2020).
  • [7] J. Miyazawa et al., Nucl. Fusion 61, 126062 (2021).
  • [8] S. Ito et al., Fusion Eng. Des. 146, 590 (2019).
  • [9] H. Tamura et al., Fusion Eng. Des. 89, 2336 (2014).
  • [10] Y. Terazaki et al., IEEE Trans. Appl. Supercond. 24, 4801305 (2014).
  • [11] Y. Terazaki et al., IEEE Trans. Appl. Supercond. 25, 4602905 (2015).