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P: Fachverband Plasmaphysik
P 14: Magnetic Confinement V
P 14.2: Vortrag
Donnerstag, 19. März 2026, 11:25–11:50, KH 02.016
Multi-Color Gas Puff Imaging in the ASDEX Upgrade Divertor — •Manuel Herschel1,2, Michael Griener1, Felix Albrecht1,2, Alessandro Mancini1, Ou Pan1, Christoph Pitzal1, Tim Happel1, Ulrich Stroth1,2, and The ASDEX Upgrade Team3 — 1Max Planck Institute for Plasma Physics, Garching, Germany — 2Technical University of Munich, Physics Department, Chair for Plasma Edge and DIvertor Physics, Garching, Germany — 3H. Zohm et al. 2024 Nucl. Fusion 64 112001
The divertor will play a critical role in a future magnetic confinement fusion power plant. It distributes heat and particle loads onto the plasma-facing materials and controls impurity influx into the main plasma volume.
To study the newly constructed upper divertor at the ASDEX Upgrade fusion experiment, it has been equipped with a variety of novel plasma diagnostics. One of these diagnostics is a Multi-Color Gas Puff Imaging (GPI) system to study fast (tens of µs) events in the divertor volume. The GPI system uses a small injection of helium gas to emit line radiation depending on local plasma parameters, which is detected by a fast camera.
The design of the diagnostic, operational challenges and results from the first experiments are presented. Various comparisons with other diagnostics and numerical turbulence simulations are shown.
Keywords: Nuclear Fusion; Gas Puff Imaging; ASDEX Upgrade