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Experimental Advanced Superconducting Tokamak (EAST)

Experimental Advanced Superconducting Tokamak (EAST)

Chinese National Fusion Research Facility

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The race to repeatable fusion ignition

New Capabilities

Broke Greenwald density limit barrier in January 2026, sustained 1066-second plasma

Los Alamos physicists achieved fusion ignition using a target that shouldn't have worked. On June 22, 2025, their THOR design—deliberately adding windows that leak crucial energy—generated 2.4 megajoules of fusion power at the National Ignition Facility. The shot created burning plasma, a self-sustaining reaction where fusion itself drives more fusion. It was ignition with a scientific instrument built in.

Updated Feb 2