Quench propagation characteristics of the liquid nitrogen cooled HTS wires by externally injected heat energy

Kyung Yong Yoon, Duck Kweon Bae, Hyoungko Kang, Min Cheol Ahn, Sang Jin Lee, Ho Min Kim, Yong Soo Yoon, Tae Kuk Ko

Research output: Contribution to journalArticle

4 Citations (Scopus)


With the successful commercialization of Bi-2223 powder-in-tube wire, many attempts to the R & D of the high-Tc superconducting (HTS) magnets for high magnetic field applications are now being implemented actively. Although operating temperature of HTS magnet must be kept in the designed level, the magnetic energy and mechanical disturbance can make the operational temperature of HTS magnet unstable. Especially, generated heat energy of inner HTS winding is apt to accumulate, so the normal region appears in HTS winding. This paper deals with the quenching characteristic of reinforced Bi-2223 wire and two bare Bi-2223 wires in adiabatic condition. The minimum quench energy (MQE) of HTS wires was affected by the material and ratio of their matrix. In the same condition, the normal zone propagation (NZP) energy of nonreinforced HTS wire was smaller than that of reinforced HTS wire.

Original languageEnglish
Article number1643020
Pages (from-to)1015-1018
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2
Publication statusPublished - 2006 Jan 1


All Science Journal Classification (ASJC) codes

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

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