Hannover 2020 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 10: Poster Session 2
P 10.3: Poster
Dienstag, 10. März 2020, 16:30–18:30, Empore Lichthof
Self-sustained divertor oscillations in ASDEX Upgrade — •Paul Heinrich1,2, Peter Manz2,1, Matthias Bernert2, Gregor Birkenmeier2,1, Dominik Brida2, Marco Cavedon2, Pierre David2, Michael Griener2, Tim Happel2, Ulrike Plank2, Felix Reimold3, Ulrich Stroth2,1, Marco Wischmeier2, and Wei Zhang2 — 1Physik-Department E28, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany — 2Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, Germany — 3Max-Planck-Institut für Plasmaphysik, Wendelsteinstr. 1, 17491 Greifswald, Germany
Alternating radiation phenomena between the inner and outer divertor regions in the sub kHz range are investigated in the tokamak ASDEX Upgrade. While the inner divertor oscillates between the onset and fluctuating state of detachment, the outer divertor oscillates between conditions where it can maintain high recycling conditions or not. The detachment state of the inner divertor determines the magnitude of the neutral flux through the private flux region, thus sets the recycling conditions at the outer divertor. In return these recycling conditions determine the particle content in the divertor, hence the detachment state at the inner divertor.