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Numerical analysis of stability and quench characteristics of superconductors for the LHD coils

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7 Author(s)
T. Fujiwara ; Fac. of Eng., Iwate Univ., Morioka, Japan ; T. Ohnishi ; T. Mito ; M. Matsukawa
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A numerical analysis has been performed on the stability and quench characteristics of superconductors for helical coils of the Large Helical Device. Two types of conductors are dealt with, both of which consist of a NbTi/Cu superconducting cable stabilized by pure aluminium. The analysis is based on a two-dimensional model and the heat conduction equation was solved numerically. The distributions of temperature and current density are clarified for the cases of recovery and quench. The minimum input energies required to initiate a quench are calculated and compared with the experimental values.<>

Published in:

IEEE Transactions on Applied Superconductivity  (Volume:3 ,  Issue: 1 )