Successive identification of surface heat flux and thermophysical properties of plasma facing components inside the JET tokamak: Numerical feasibility

Abstract

We present here the numerical feasibility of using two thermal diagnostics (IR surface and embedded thermocouple temperature measurements), that outfit the same carbon tile inside the JET Fusion reactor and whose combination enables to identify, on one hand, a surface heat flux history and, on the other hand, the spatial and time variation of the thermal resistance of an unknown deposited surface carbon layer (SCL). The Conjugate Gradient Method (CGM) and the adjoint state were applied to perform these two identifications. © Published under licence by IOP Publishing Ltd.