关键词: 等离子体, MHD不稳定性, 实时预测破裂, 激光吹气

Abstract: A effective method has been proposed to predict the major disruptions caused by MHD instabilities and a real-time disruption prediction system on the HL-2A tokamak has been developed successfully, in which the amplitude or frequency of the MHD signal detected by a Mirnov coil is checked to predict the major disruption and the injecting-impurity method is used to mitigate the major disruption by means of the laser blow-off system. The response time of this system is 1ms and, therefore, it satisfies the experimental requirements.

Key words: Plasma, MHD instability, Real-time disruption prediction, Laser blow-off