Multi-scale Interaction Mechanism for Edge-Localized-Mode Suppression in the Tokamak Edge.

ABSTRACT: A central challenge in fusion energy is reconciling the high-confinement mode required for reactor performance with the intense intermittent relaxation events it produces, known as edge-localized modes. These instabilities arise in the steep pressure pedestal at the plasma edge when magnetohydrodynamic thresholds are crossed, inflicting damaging heat loads on reactor components. Here, we show that multiscale interactions between microscopic turbulence and macroscopic magnetohydrodynamic modes provide encouraging prospects for self-organized edge-localized modes regulation. Using direct quantitative measurements of multiscale modes, eddy dynamics, and turbulent flux, we show that small-scale electron drift wave turbulence actively scatters the large-scale peeling-ballooning modes. This scat

SUBMITTER: Li Z 

PROVIDER: S-EPMC12748781 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature