Stability and Normal Zone Propagation Speed in YBCO Coated Conductors With Increased Interfacial Resistance

Author

Levin, George A. ; Barnes, Paul N. ; Rodriguez, Jose P. ; Connors, Jake A. ; Bulmer, John S.

Author_Institution

Air Force Res. Lab., Wright-Patterson AFB, OH, USA

Volume

19

Issue

3

fYear

2009

fDate

6/1/2009 12:00:00 AM

Firstpage

2504

Lastpage

2507

Abstract

We will discuss how stability and speed of normal zone propagation in YBCO-coated conductors is affected by interfacial resistance between the superconducting film and the stabilizer. Our numerical simulation has shown that the increased interfacial resistance substantially increases speed of normal zone propagation and decreases the stability margins. Optimization of the value of the resistance may lead to a better compromise between stability and quench protection requirements than what is found in currently manufactured coated conductors.

Keywords

barium compounds; copper; electrical resistivity; high-temperature superconductors; metal-insulator boundaries; numerical analysis; superconducting thin films; yttrium compounds; YBCO coated conductors; YBa₂Cu₃O_7-x-Cu; high-temperature superconductors; interfacial resistance; normal zone propagation speed; numerical simulation; stability margins; superconducting film; superconducting wires; Coated conductors; normal zone; stability;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2019604

Filename

5109616