Princeton AI Tames Fusion Plasma Hotter Than the Sun Princeton University's PACMAN AI system can control fusion plasma in milliseconds and predict dangerous instabilities before they occur, addressing disturbances that develop within thousandths of a second in plasma hotter than the Sun's core. Princeton’s PACMAN AI can control fusion plasma in milliseconds and predict dangerous instabilities before they start. In some fusion energy systems, particles can reach temperatures hotter than the center of the Sun. The challenge is keeping that extreme plasma under control, because disturbances can develop within just a few thousandths of a second, much faster ...