EAST Fusion Facility Exceeds Fusion Plasma Density Limit New Plasma Regime: The Chinese fusion reactor EAST has overcome a crucial density limit for fusion plasma, achieving the so-called density-free regime for the first time. This allows the plasma to be compressed to a higher density without dangerous instabilities occurring near the reactor vessel walls. The EAST fusion facility thus paves the way for the extreme conditions necessary for nuclear fusion. The EAST (Experime