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A four array ECEI instrument for imagin and visualization of MHD and microturbulence phenomena on the KSTAR tokamak

An innovative, four array electron cyclotron emission (ECE) imaging (ECEI) system is under development for use on the KSTAR tokamak. ECEI is a passive radiometric imaging diagnostic technique in which broadband ECE radiation is collected by a 1-D imaging array to generate 2-D localized, time-resolved electron temperature Te images.1 Translatable optics allow each array to independently focus on different portions of the KSTAR plasma, forming 20 (v) × 8 (h) = 128 channel images of Te profiles and fluctuations.