Nitrogen boil-off method of measuring AC losses in YBCO coils

H. Okamoto, H. Hayashi, F. Sumiyoshi, M. Iwakuma, T. Izumi, Y. Yamada, Y. Shiohara

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The nitrogen boil-off method, which is categorized as one of the calorimetric methods, has been developed as a practical method for measuring AC losses in high temperature superconducting (HTS) coils. The boil-off method offers direct and convenient measurement compared to the electric method. The measurement sensitivity of about 0.5 W was confirmed by the improvement of sample vessel structure and the control of the heater power. This paper reports the results of a comparison of the AC losses in superconducting coils using YBCO tapes measured with the boil-off method and those obtained by the electric method and by analysis.

Original languageEnglish
Pages (from-to)795-797
Number of pages3
JournalPhysica C: Superconductivity and its applications
Issue numberSUPPL.
Publication statusPublished - Oct 1 2007

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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