Time Resolved Surface Temperature Measurements of the Dite Mkii Bundle Divertor Target Plate Using a Scanning Infrared Camera

Abstract

The DITE tokamak has a bundle divertor capable of operating in the maximum toroidal field of 2.7 T. A scanning infrared camera with a framing rate of 50 f.p.s. has been used to determine the power and power density at the divertor target. For discharges with 1.4 MW of neutral injection, peak diverted powers of nearly 400 kW were observed during the neutral injection period, representing 24% of the total input power. Power densities on the ion drift side of the target of up to 30 MW m⁻² were measured for these discharges. Discharges without neutral injection show a maximum power diversion when the gas puffing is switched off.