Insights into Tokamak Turbulence Control through Fusion Simulations.

Supercomputer simulations have revealed that multi-scale turbulence, which is caused by the interaction between the slow, large-scale motion of hydrogen fuel ions and the fast, small-scale motion of electrons, is mostly responsible for heat losses in the edge region of tokamak experiments required for optimized fusion reactors. The simulations accurately predict the heat losses measured in experiments in the DIII-D tokamak, and the findings will aid researchers in designing next-generation fusion reactors with optimal fusion performance.