Plasma Science and Fusion Center (PSFC): Recent submissions
Now showing items 163-165 of 2054
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Towards Fast and Accurate Predictions of Radio Frequency Power Deposition and Current Profile via Data-driven Modeling
(Cambridge University Press, 2022-04)Three machine learning techniques (multilayer perceptron, random forest, and Gaussian process) provide fast surrogate models for lower hybrid current drive (LHCD) simulations. A single GENRAY/CQL3D simulation without radial ... -
Interaction of radio frequency waves with cylindrical density filaments -- scattering and radiation pressure
(Cambridge University Press, 2021-08)The propagation of radio frequency (RF) waves in tokamaks can be affected by filamentary structures, or blobs, that are present in the edge plasma and the scrape-off layer. The difference in the permittivity between the ... -
Lower hybrid current drive in a tokamak for correlated passes through resonance
(Cambridge University Press, 2021-02)Standard quasilinear descriptions are based on the constant magnetic field form of the quasilinear operator so improperly treat the trapped electron modifications associated with tokamak geometry. Moreover, successive ...
