Two-dimensional measurement of plasma dynamics with a 4-channel fast speed camera based on HeI line intensity ratio method

摘要

The investigation of dynamic behavior of edge plasmas in fusion devices has received considerable attention associated with disruption. In the International Thermonuclear Experimental Reactor (ITER), it is considered that the intermittent plasma heat load due to disruption determines the lifetime of the plasma-facing components. In order to understand the dynamics of disruption in the edge plasma regions, it is necessary to measure electron temperature and density spatially and time-resolvedly.