DocumentCode :
855370
Title :
Effects of the 
Wire Cross Section Configuration on the Thermal Stability Performance
Author :
Breschi, Marco ; Trevisani, Luca ; Bottura, Luca ; Devred, Arnaud ; Trillaud, Frederic
Author_Institution :
Dept. of Electr. Eng., Univ. of Bologna, Bologna, Italy
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2432
Lastpage :
2436
Abstract :
The thermal and electrical conductivities of the normal matrix of LTS wires have a remarkable influence on the wire stability. In particular, in Nb3Sn wires, a bronze matrix in the region of the superconducting filaments may act as a thermal and electrical barrier between the filaments and the copper matrix. This phenomenon is analyzed here through a numerical model accounting for these thermal and electrical transverse resistances. The model is applied to a parametric analysis of the effect of the main properties of the wire matrix on the quench energy and velocity. A 2D analysis of the wire cross section is applied to investigate how a configuration change could improve the wire stability.
Keywords :
copper; electric resistance; niobium alloys; superconducting materials; thermal resistance; thermal stability; tin alloys; 2D analysis; Cu-Nb3Sn; bronze matrix; copper matrix; electrical barrier; electrical conductivity; electrical transverse resistance; low temperature superconducting wire cross section configuration; numerical model; parametric analysis; superconducting filaments; thermal barrier; thermal conductivity; thermal stability; thermal transverse resistance; ${rm Nb}_{3}{rm Sn}$ wire; normal zone propagation velocity; quench energy; thermal stability; transverse conductivity;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2017875
Filename :
4914778
Link To Document :
