Development and characteristics of persistent mode in HTS magnet

Jung Ho Kim, Jun Hyung Lim, Jinho Joo, Seyong Choi, Se Hee Lee, Wansoo Nah, Hyoungku Kang, Tae Kuk Ko

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We fabricated a high-temperature superconducting (HTS) magnet with a persistent current switch (PCS) and evaluated the decay characteristics of persistent mode and joint resistance at 77 K. To make the HTS magnet, BSCCO(2223) tapes were wound into a double-pancake coil and connected to the PCS by soldering. Field decay behavior was remarkably dependent on operating current. At an operating current of 50% of the critical current (Ic), decay behavior showed two distinct regimes: initial fast decay and subsequent linear decay. By contrast, there was a linear decay regime of only 13% of I c. Total circuit resistance was approximately 2.0×10 -8 Ω at an operating current of 6 A. Measured decay behavior was closely consistent with the calculated decay behavior obtained from both the index resistance and joint resistance components.

Original languageEnglish
Pages (from-to)1026-1029
Number of pages4
JournalPhysica C: Superconductivity and its applications
Issue numberSPEC. ISS.
Publication statusPublished - 2004 Oct

Bibliographical note

Funding Information:
This research was supported by a grant from the Center for Applied Superconductivity Technology of the 21st Century Frontier R&D Program Funded by the Ministry of Science and Technology, South Korea.

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Development and characteristics of persistent mode in HTS magnet'. Together they form a unique fingerprint.

Cite this