Activity of Indian High Heat Flux Test Facility

Full text: Plasma facing components (PFCs) of ITER-like tokamak are expected to subject high heat loads up to 10 MW/m² during the tokamak operation in steady state condition. Selection of plasma facing materials/components required extensive qualification and testing for tokamak application. The High Heat Flux Test Facility (HHFTF) plays an important role for the qualification and estimation of the life of the component under defined heat load condition. HHFTF with heat flux generated by an electron beam system having 200 kW power and 45 kV maximum acceleration voltage is in full-fledged operation since 2016. HHFTF is dedicated for high heat flux testing of numerous materials and plasma facing components (small and medium sized) for several thousand thermal cycles at different heat loads. The facility is equipped with high vacuum pumping systems with pressure regulation, high pressure high temperature water circulation loop and several diagnostics devices such as pyrometers, IR-cameras, video cameras, flow, pressure and temperature sensors. This paper describes the main capabilities of the HHFTF and gives a glimpse of various tests performed on plasma facing materials and components. (author)