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

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - Oct 1 2007

Fingerprint

alternating current
Nitrogen
coils
nitrogen
Tapes
heaters
tapes
vessels
Temperature
Superconducting coils

All Science Journal Classification (ASJC) codes

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

Cite this

Okamoto, H., Hayashi, H., Sumiyoshi, F., Iwakuma, M., Izumi, T., Yamada, Y., & Shiohara, Y. (2007). Nitrogen boil-off method of measuring AC losses in YBCO coils. Physica C: Superconductivity and its applications, 463-465(SUPPL.), 795-797. https://doi.org/10.1016/j.physc.2007.02.029

Nitrogen boil-off method of measuring AC losses in YBCO coils. / Okamoto, H.; Hayashi, H.; Sumiyoshi, F.; Iwakuma, Masataka; Izumi, T.; Yamada, Y.; Shiohara, Y.

In: Physica C: Superconductivity and its applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 795-797.

Research output: Contribution to journalArticle

Okamoto, H, Hayashi, H, Sumiyoshi, F, Iwakuma, M, Izumi, T, Yamada, Y & Shiohara, Y 2007, 'Nitrogen boil-off method of measuring AC losses in YBCO coils', Physica C: Superconductivity and its applications, vol. 463-465, no. SUPPL., pp. 795-797. https://doi.org/10.1016/j.physc.2007.02.029
Okamoto, H. ; Hayashi, H. ; Sumiyoshi, F. ; Iwakuma, Masataka ; Izumi, T. ; Yamada, Y. ; Shiohara, Y. / Nitrogen boil-off method of measuring AC losses in YBCO coils. In: Physica C: Superconductivity and its applications. 2007 ; Vol. 463-465, No. SUPPL. pp. 795-797.
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