Thermal, electrical and mechanical response in Nb sub(3)Sn superconducting coils

During a quench, significant temperatures can arise as a magnet's stored energy is dissipated in the normal zone. Temperature gradients during this process give rise to localized strains within the coil. Reactive forces in the magnet structure balance the electromagnetic and thermal forces and...

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Bibliographic Details
Published inIEEE transactions on applied superconductivity Vol. 14; no. 2
Main Authors Ferracin, P, Caspi, S, Chiesa, L, Gourlay, SA, Hafalia, R R, Imbasciati, L, Lietzke, A F, Sabbi, G, Scanlan, R M
Format Journal Article
LanguageEnglish
Published 01.01.2004
Subjects
Coils
Electric potential
Internal energy
Mathematical analysis
Simulation
Superconductivity
Three dimensional
Voltage
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Summary:During a quench, significant temperatures can arise as a magnet's stored energy is dissipated in the normal zone. Temperature gradients during this process give rise to localized strains within the coil. Reactive forces in the magnet structure balance the electromagnetic and thermal forces and maintain on equilibrium. In this paper we present a complete 3D finite element analysis of a racetrack coil. Specifically, the analysis focuses on thermal, electrical and mechanical conditions in a 10 T Nb sub(3)Sn coil built and tested as part of LBNL's Subscale Magnet Program. The study attempts to simulate time history of the temperature and voltage rise during quench propagation. The transient thermal stress after the quench is then evaluated and discussed.
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ISSN:1051-8223
DOI:10.1109/TASC.2004.829130