Quench Simulation of the Hybrid Magnet Superconducting Outsert Being Built in China

Abstract

Quench simulation of the hybrid magnet superconducting outsert being built at the High Magnetic Field Laboratory, Chinese Academy of Sciences was performed. The hybrid magnet is composed of a superconducting outsert magnet and a resistive insert magnet. The superconducting outsert will produce a central magnetic field of 11.0 T at 13,410 A. An induced current of 1270 A in the superconducting outsert is generated during resistive insert magnet trip. In case of a quench occurs from an overcurrent condition, the superconducting outsert magnet will produce a high hot spot temperature. The positive temperature coefficient dump resistor was used for accelerating the current decay during a quench. In this paper, the quench propagation analysis of the superconducting outsert under an over-current condition was presented.

Thermal–hydraulic analysis of the coil test facility for CFETR

“…To reduce the quench voltage of the coil terminals and to accelerate the current decay during a quench, the ST-08 stainless steel with positive temperature coefficient will be adopted as the material of dump resistor (Ren et al 2015b). The 1-D GANDALF code was used to analyze the temperature margin and quench propagation behavior (Bottura 1996).…”