Accuracy of AC transport current loss in HTS tape measurements using a pick-up loop

Jun Ogawa, Satoshi Fukui, Tetsuo Oka, Takao Sato, Atsushi Maruko, Hiroshi Tanaka

Research output: Contribution to journalArticle


AC transport current loss in high temperature superconducting (HTS) tapes can be measured without a direct electrical connection by using a pick-up loop method. This method requires a correction factor, which is related to the ratio of the linkage magnetic flux determined by the distribution of the transport current in the HTS tape and pick-up loop. In this study, to determine the accuracy of the AC transport current loss measurement using a pick-up loop method, we measured the critical current and AC transport current loss distribution in the tape axis. We found the pick-up loop voltage of the deteriorated section of the HTS tape to be higher than in the normal section with the same transport current. We concluded that the pick-up loop method accuracy is sufficient to measure the AC transport current loss in HTS tapes.

Original languageEnglish
Article number5109567
Pages (from-to)2391-2394
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - 2009 Jun 1



  • AC transport current loss measurement
  • Correction factor
  • Pick-up loop method

ASJC Scopus subject areas

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

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