Story perspectives

China's EAST Surpasses Greenwald Limit, Boosts Fusion Potential

1/15/2026

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Summary

Story summary

Experimental Advanced Superconducting Tokamak (EAST) researchers in China surpassed the Greenwald limit, maintaining plasma densities at 1.3 to 1.65 times this limit.
They achieved this on January 1 by applying plasma-wall self-organization (PWSO) theory to stabilize plasma.
The result could enable more efficient fusion reactors, including ITER, which aims to begin full-scale operations in 2039.
The EAST experiment shows engineering approaches can address plasma stability challenges and advance fusion energy.

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Story summary

Experimental Advanced Superconducting Tokamak (EAST) researchers in China surpassed the Greenwald limit, maintaining plasma densities at 1.3 to 1.65 times this limit.
They achieved this on January 1 by applying plasma-wall self-organization (PWSO) theory to stabilize plasma.
The result could enable more efficient fusion reactors, including ITER, which aims to begin full-scale operations in 2039.
The EAST experiment shows engineering approaches can address plasma stability challenges and advance fusion energy.