München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 18: Postersitzung

P 18.2: Poster

Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax

A Synthetic Doppler Reflectometry Diagnostic For Fusion Plasma Turbulence — •Carsten Lechte1, Garrard Conway2, Tobias Görler2, Tim Happel2, Kevin Schöbel1, and The ASDEX Upgrade Team21IGVP, Stuttgart University, 70569 Stuttgart, Germany — 2Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany

Doppler reflectometry or Doppler backscattering is a localised scattering technique for plasma density fluctuations in the millimetre wave range (40–110 GHz). It is used to measure the wavenumber spectrum of the turbulent density fluctuations in fusion plasmas. Fullwave simulations of the reflectometer with the code IPF-FD3D are used to link the fluctuation spectra of plasma turbulence simulations (using the GENE code) to the experimental data that is available for the tokamak ASDEX Upgrade.

New high resolution simulations show the non-linear scattering properties of the plasma at the edge density fluctuation levels that have been observed in ASDEX Upgrade. Experimental and simulation spectra are shown to be in good agreement.

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