Quench Simulation Analysis of a Superconducting Coil

With the intention of identifying a quench position in a superconducting coil, the behaviour of an artificially quenched superconducting coil has been investigated. The superconducting coil is a solenoidal, bobbinless, and tightly wound impregnated coil with many voltage terminals, thermocouples, and heaters. The propagation of a normal zone is made two-dimensional by a one-turn-heater or three-dimensional by a point-heater set in the coil. The time-varying terminal voltages and temperatures in the coil have been in detail examined with respect to quench positions, i.e., locations of the heaters. Normal front velocities and effective thermal conductivities of the radial, azimuthal, and axial directions are also analyzed from those experimental results.