Bremen 2017 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 15: Helmholtz Graduate School II
P 15.6: Poster
Dienstag, 14. März 2017, 16:30–18:30, HS Foyer
Doppler Coherence Imaging of impurity ion flows in the ASDEX-Upgrade divertor and plasma flows in VINETA.II — •Dorothea Gradic1, Oliver Ford1, Tilmann Lunt2, Robert Wolf1, and ASDEX-Upgrade Team2 — 1Max-Planck-Institut für Plasmaphysik, D-17491 Greifswald, Germany — 2Max-Planck-Institut für Plasmaphysik, D-85748 Garching, Germany
In magnetically confining plasma experiments, measurement of ion dynamics is of great importance to study the plasma behavior in magnetic fields such as the exhaust particle flows in the divertor areas. The Doppler coherence imaging spectroscopy (CIS) is a relatively new technique for the observation of plasma bulk ion flows. It is a passive optical diagnostic which produces 2D images of line-integrated measurements of the ion flow or ion temperature.
The main physics objective of this study is the research of ion dynamics in the small, low-temperature linear plasma experiment VINETA.II and the medium-sized tokamak ASDEX- Upgrade. This work focuses on the general characteristics of impurity ion flows in the poloidal field divertor and on bulk plasma ion flow in VINETA.II. Doppler CIS measurements from both experiments will be presented. A comparison with flows simulated by the 3D edge modeling code EMC3-Eirene is included for the ASDEX-Upgrade divertor measurements.