ETG Modeling of a TCV Multi-Phase H-Mode Shot

TCV is well suited for electron transport studies due to its well developed ECRH system. Ion heating is achieved by thermal equilibration at high density in combination with strong third harmonic X-mode (X3) ECRH heating. In TCV shot 29892, X3 heating was applied to an ohmic ELMy H-mode, either at full or modulated power. This shot covers four stationary H-mode phases, one ohmic followed by three ELMy or ELM-free X3 heated. The final two are akin to improved H-modes. Previous analysis with the GLF model implied the discharge to be ITG dominated, in accordance with a preliminary Weiland stability analysis. As the applied heating only affects the electrons it is important to analyze this discharge regarding ETG and/or TEM modes. The ETG turbulence calculated with the IFS-ETG model will be presented. This model has already successfully calculated electron transport in dominantly electron-heated NSTX and Tore Supra.