Fig. 3: The AI-based tearing-avoidance experiments in DIII-D.
From: Avoiding fusion plasma tearing instability with deep reinforcement learning
a, The observation of the AI controller; the preprocessed profiles of electron density, electron temperature, ion rotation, safety factor and plasma pressure. b, The time traces of discharges 193266 (stable reference), 193273 (unstable reference) and 193280. Discharge 193280 is the AI-controlled one. c, The low-level coil current control by the PCS and the plasma boundary variation. Scaled currents of poloidal field (PF) coils are shown in colour. d, The low-level individual beam power control by the PCS. e, The estimated tearability for discharges 193273 and 193280.
