Stability and quench protection of coated YBCO "composite" tape

Yukikazu Iwasa, Joseph Jankowski, Seung Yong Hahn, Haigun Lee, Juan Bascuñán, Jodi Reeves, Allan Knoll, Yi Yuan Xie, Venkat Selvamanickam

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


The paper presents results, experiment and simulation, of quench/recovery study of coated YBCO "composite" test samples, cooled by boiling liquid nitrogen and subjected to an over-current pulse. To operate stably and be protected from damage under adverse operating conditions of a real device, the YBCO tape must be a "composite," loaded with normal metal of a sufficient thickness that significantly increases the thickness of the original YBCO tape.

Original languageEnglish
Pages (from-to)1683-1686
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 PART II
Publication statusPublished - 2005 Jun
Externally publishedYes

Bibliographical note

Funding Information:
Manuscript received October 4, 2004. This work was supported in part by the DOE Office of Electric Transmission and Distribution. Y. Iwasa, S. Hahn, H. Lee, and J. Bascuñán are with the Francis Bitter Magnet Laboratory (FBML), MIT, Cambridge, MA 02139-4208 USA (e-mail:;;; J. Jankowski is with the FBML and the MIT Department of Mechanical Engineering, Cambridge, MA 02139-4208 USA. J. Reeves, A. Knoll, Y.-Y. Xie, and V. Selvamanickam are with the SuperPower, Inc. (SPI), Schenectady, NY 12304 USA (e-mail:;;; Digital Object Identifier 10.1109/TASC.2005.849238


  • Liquid nitrogen cooling
  • Stability and quench protection
  • YBCO-normal metal composite

ASJC Scopus subject areas

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


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