Title :
A Passive Quench Protection Design for the 9.4 T MRI Superconducting Magnet
Author :
Yi Li ; Shunzhong Chen ; Yinming Dai ; Yuanzhong Lei ; Shousen Song ; Zhipeng Ni ; Xinning Hu ; Luguang Yan
Author_Institution :
Inst. of Electr. Eng., Beijing, China
Abstract :
A passive quench protection design of the 9.4 T whole-body magnetic resonance imaging superconducting magnet is proposed. The design of the coil subdivision with shunt resistors is introduced. The selection of the configuration of the heater network is detailed. The optimization of the geometric parameter of the heater strips and the thickness of the insulation binding outside the heater strips are discussed. A winding sequence that could accelerate the quench propagation in the compensating coil is proposed. The calculation results show that the optimized quench protection design can guarantee the safety of the magnet in the case of any coil as the quench initiation coil.
Keywords :
coils; design; magnetic resonance imaging; optimisation; resistors; superconducting magnets; MRI superconducting magnet; heater strips; magnetic resonance imaging superconducting magnet; optimization; passive quench protection design; quench initiation coil; quench propagation; shunt resistors; Coils; Heating; Magnetic resonance imaging; Magnetomechanical effects; Resistors; Strips; Superconducting magnets; Magnetic resonance imaging (MRI) superconducting magnet; quench protection; quench simulation;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2283812
