the TCV tokamak are discussed. Power up to 2.7 MW from six gyrotrons is delivered to the
tokamak at the second-harmonic frequency (82.7 GHz) in X-mode. The power is transmitted
to the plasma by six independent launchers, each equipped with steerable mirrors that allow
a wide variety of injection angles in both the poloidal and toroidal directions. Fully non-
inductive operation of the tokamak has been achieved in steady state, for the full 2 s gyrotron …