Quasi-optical system for 8 mm microwave imaging reflectometry

Microwave imaging reflectometry (MIR) is a kind of important means in plasma turbulence diagnosis, which is used to obtain the 2-D/3-D image of the turbulences and instabilities with high space and time resolutions, so that visualized real-time observation of plasma turbulence field can be achieved and more accurate information can be gained. This paper presents the theoretical calculation and optical simulation of an 8 mm MIR with quasi-optical system according to the parameters of the HL-2A Tokamak. And the quasi-optical system in the MIR is then designed.