Fabrication of 1 kA class oxide superconducting transformer cooled by cryocooler for AC transport measurement

E. S. Otabe, T. Yasuda, T. Matsushita, M. Iwakuma, T. Bohno

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An AC current source of 1000 A class for AC transport measurements was designed and fabricated with using an oxide superconducting current transformer. Two cryocoolers were installed for cooling the transformer and a sample holder separately. A parallel conductor composed of six tapes was wound for a secondary winding and a transposition was performed to make the current distribution uniform in the parallel conductor. Temperatures of the transformer and the sample holder were controlled in the range of 35-50 and 25-77 K, respectively. The peak current in the secondary winding was over 1000 A in the frequency range of 1-75 Hz, when the primary peak current was 14 A.

Original languageEnglish
Pages (from-to)1711-1714
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume372-376
Issue numberPART 3
DOIs
Publication statusPublished - Aug 1 2002

All Science Journal Classification (ASJC) codes

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

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