The effects of superconductor-stabilizer interfacial resistance on quench of a pancake coil made out of coated conductor

Details The effects of superconductor-stabilizer interfacial resistance on quench of a pancake coil made out of coated conductor The effects of superconductor-stabilizer interfacial resistance on quench of a pancake coil made out of coated conductor

2010-07-21

arxiv.org/abs/1007.3768v2

Physics

Condensed Matter

Superconductivity

9 pages, 4 figures

Scientific paper

We present the results of numerical analysis of normal zone propagation in a stack of $YBa_2Cu_3O_{7-x}$ coated conductors which imitates a pancake coil. Our main purpose is to determine whether the quench protection quality of such coils can be substantially improved by increased contact resistance between the superconducting film and the stabilizer. We show that with increased contact resistance the speed of normal zone propagation increases, the detection of a normal zone inside the coil becomes possible earlier, when the peak temperature inside the normal zone is lower, and stability margins shrink. Thus, increasing contact resistance may become a viable option for improving the prospects of coated conductors for high $T_c$ magnets applications.

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