The deteriorating effect of plasma density fluctuations on microwave beam quality
| Autor: | H. Weber, Omar Maj, Antti Snicker, Eberhard Holzhauer, C.C. Petty, Alf Köhn, Kenneth W Gentle, Michael Brookman, Emanuele Poli, Max E Austin, L. Guidi, Rob J. La Haye, Matthew B. Thomas, Jarrod Leddy, Roddy G. L. Vann |
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| Přispěvatelé: | Poli, E, Laqua, H, Oosterbeek, J, Department of Applied Physics, Aalto-yliopisto, Aalto University |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Range (particle radiation) Scattering QC1-999 WAVES FOS: Physical sciences Solver 01 natural sciences Physics - Plasma Physics 010305 fluids & plasmas Computational physics Plasma Physics (physics.plasm-ph) Quality (physics) TOKAMAK 0103 physical sciences Deposition (phase transition) Microwave beam Magnetohydrodynamics 010306 general physics Plasma density |
| Zdroj: | EPJ Web of Conferences EPJ Web of Conferences, Vol 203, p 01005 (2019) |
| ISSN: | 2100-014X |
| Popis: | Turbulent plasma edge density fluctuations can broaden a traversing microwave beam degrading its quality. This can be a problem for scenarios relying on a high spatial localization of the deposition of injected microwave power, like controlling MHD instabilities. Here we present numerical estimations of the scattering of a microwave beam by density fluctuations over a large parameter range, including extrapolations to ITER. Two codes are used, the full-wave code IPF-FDMC and the wave kinetic equation solver WKBeam. A successful comparison between beam broadening obtained from DIII-D experiments and corresponding full-wave simulations is shown. EPJ Web of Conferences, EC-20 2018 Proceedings, submitted |
| Databáze: | OpenAIRE |
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