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We present new experimental measurements of the Lower Hybrid (LH) wave electric field vector, ELH , obtained in Alcator C-Mod and provide a direct comparison with 3D full-wave COMSOL simulations… Click to show full abstract
We present new experimental measurements of the Lower Hybrid (LH) wave electric field vector, ELH , obtained in Alcator C-Mod and provide a direct comparison with 3D full-wave COMSOL simulations using the cold plasma dielectric tensor and reflectometrymeasured density profiles. Two key results are reported: 1)The direction of ELH was found to have a substantial poloidal component and is in strong disagreement with the nearly radial full-wave simulation result. 2) Adding Scrape Off Layer (SOL) density fluctuations to the density profile implemented in the full-wave simulations can be used to explain the ELH direction discrepancy.
Journal Title: Nuclear Fusion
Year Published: 2019
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