Bochum 2015 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 16: Poster Session - Helmholtz Graduate School for Plasma Physics

P 16.16: Poster

Dienstag, 3. März 2015, 16:30–18:30, Foyer Audimax

Study of Turbulence Structures using Poloidal Correlation Reflectometry at AUG — •Dmitrii Prisiazhniuk1,2, Andreas Krämer-Flecken3, Garrard Conway1, Ulrich Stroth1,2, and The ASDEX Upgrade Team11Max-Planck-Institut für Plasmaphysik, Boltzmannstrasse 2, 85748 Garching, Germany — 2Physik-Department E28, Technische Universität München, 85748 Garching,Germany — 3Institut für Energieforschung - Plasmaphysik, Forschungszentrum Jülich, Association EURATOM-FZJ, 52425 Jülich, Germany

A poloidal correlation reflectometer (PCR) system has been installed on AUG, which is able to measure key properties of turbulence such as correlation length, decorrelation time, inclination of eddies and propagation velocity. Additionally, these measurements provide information on global plasma properties such as the velocity of plasma rotation and the shear of the magnetic field (q-profile). After a first campaing of operation of the PCR at AUG, preliminary results for pitch angle and velocity measurements have been obtained. Initial cross-comparison of the measured velocity with the Doppler reflectometry system are presented. The measured pitch angles are compared with magnetic equilibrium reconstruction from the Cliste code. This comparison showed similar trends and values of measured angle for L-mode confinement, but some deviations from Cliste results have been found.

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