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Effects of the {\rm Nb}_{3}{\rm Sn} Wire Cross Section Configuration on the Thermal Stability Performance

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5 Author(s)
Breschi, M. ; Dept. of Electr. Eng., Univ. of Bologna, Bologna, Italy ; Trevisani, L. ; Bottura, L. ; Devred, A.
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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.

Published in:

Applied Superconductivity, IEEE Transactions on  (Volume:19 ,  Issue: 3 )

Date of Publication:

June 2009

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