RECENT PROGRESS IN ELECTRON CYCLOTRON RADIATIVE TRANSPORT MODELLING OF FUSION PLASMAS IN VIEW OF ITER AND DEMO APPLICATIONS

As it was recognised that local electron cyclotron (EC) wave power losses can be a competitive contribution to the 1D electron power balance for reactor-grade tokamak plasmas in regimes as anticipated for steady-state operation, a systematic effort is ongoing to improve the modelling capability for the radial profile of EC wave emission. This effort aims at generating a hierarchy of codes that cover the non-local behaviour of EC wave transport with good accuracy and also provide sufficient computational efficiency for being usable in 1D transport studies. An overview on this activity is given with emphasis on the code RAYTEC which explicitly addresses the geometrical effects present in toroidal plasmas with arbitrary cross-section.