Suppression of flux creep in HTS coil by applying low AC magnetic field

Kazuhiro Kajikawa, Tomokazu Honda, Kenta Tadakuma

Research output: Contribution to journalArticle

Abstract

The suppression of flux creep in the central magnetic field of an higherature superconducting (HTS) coil is experimentally validated by applying a low ac magnetic field using additional coils. The HTS coil is fabricated using a Gd-based coated conductor, and a pair of the additional coils wound using copper wires, which are connected in series in the opposite direction, are located coaxially inside and outside the HTS coil. These coils are immersed in liquid nitrogen, and the temporal evolutions of the central fields in the axial direction by applying ac fields for short periods of time using the additional coils after the ramping processes of the HTS coil are observed using a Hall probe. The influences of the amplitude and frequency of ac field on the flux creep in the HTS coil are investigated experimentally.

Original languageEnglish
Article number8246546
JournalIEEE Transactions on Applied Superconductivity
Volume28
Issue number3
DOIs
Publication statusPublished - Apr 1 2018

Fingerprint

alternating current
Creep
coils
retarding
Magnetic fields
Fluxes
magnetic fields
Liquid nitrogen
Copper
Superconducting coils
Wire
liquid nitrogen
conductors
wire
copper
probes
Direction compound

All Science Journal Classification (ASJC) codes

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

Cite this

Suppression of flux creep in HTS coil by applying low AC magnetic field. / Kajikawa, Kazuhiro; Honda, Tomokazu; Tadakuma, Kenta.

In: IEEE Transactions on Applied Superconductivity, Vol. 28, No. 3, 8246546, 01.04.2018.

Research output: Contribution to journalArticle

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