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Updated: Apr 25, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Magnetic topology changes induced by lower hybrid waves and their profound effect on edge-localized modes in the EAST
1Forschungszentrum Jülich GmbH, Association EURATOM-FZ Jülich, Institut für Energie und Klimaforschung Plasmaphysik, Trilateral Euregio Cluster, D-52425 Jülich, Germany.
Abstract:
Strong mitigation of edge-localized modes has been observed on Experimental Advanced Superconducting Tokamak, when lower hybrid waves (LHWs) are applied to H-mode plasmas with ion cyclotron resonant heating. This has been demonstrated to be due to the formation of helical current filaments flowing along field lines in the scrape-off layer induced by LHW. This leads to the splitting of the outer divertor strike points during LHWs similar to previous observations with resonant magnetic perturbations. The change in the magnetic topology has been qualitatively modeled by considering helical current filaments in a field-line-tracing code.
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