Normal zone initiation and propagation in Y-Ba-Cu-O coated conductors with Cu stabilizer

Xiaorong Wang, Angelo R. Caruso, Marco Breschi, Guomin Zhang, Ulf P. Trociewitz, Hubertus W. Weijers, Justin Schwartz

Research output: Contribution to journalArticle

78 Scopus citations

Abstract

In the ongoing effort to investigate the normal zone behavior of coated conductors, the effects of a localized, pulsed heat disturbance on a YBa 2Cu3Ox/Ni-alloy conductor with Cu stabilizer was investigated. The sample was conduction cooled by a GM cryocooler in a vacuum environment, establishing nearly adiabatic conditions. A NiCr wire heater mounted on the sample was used to provide the heat pulse that initiated the normal zone. Consecutive voltage taps along the length of both sides of the sample monitored the propagation of the normal zone. Several thermocouples were glued on both sides of the sample to measure the temperature profile of the conductor. The minimum quench energies and normal zone propagation velocities were measured at ambient temperatures from 58 K to 79 K and transport current ranging from 30% to 90% of Jc. The voltage and temperature profiles are presented and discussed.

Original languageEnglish (US)
Pages (from-to)2586-2589
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume15
Issue number2 PART III
DOIs
StatePublished - Jun 1 2005

All Science Journal Classification (ASJC) codes

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

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