Preliminary Simulation and Experimental Studies on View Dump made of Silicon Carbide for Vertical Electron Cyclotron Emission Experiment

This paper describes the simulation and experimental studies for the design and characterization of high-temperature and high vacuum compatible view dump; required to reduce the effects of scattering and tokamak wall reflections for the Vertical Electron Cyclotron Emission (VECE) diagnostic. Based on the in-vessel requirements, the silicon carbide (SiC) material is selected and the electromagnetic (EM) behavior of the slab and pyramid geometry fabricated from it is investigated. Firstly, simulations are performed to investigate the slab geometry and then modified into a pyramidal geometry to improve its absorption capabilities. To validate the simulation results, experiments are performed in the frequency range of 60–110 GHz.