SMuK 2023 – wissenschaftliches Programm
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P: Fachverband Plasmaphysik
P 11: Poster I
P 11.30: Poster
Mittwoch, 22. März 2023, 14:00–15:30, HSZ EG
First Measurements of the Imaging Heavy Ion Beam Probe at ASDEX Upgrade — •Hannah Lindl1,2, Gregor Birkenmeier1,2, Pablo Oyola3, Jose Rueda Rueda3, Balazs Tal1, Joey Kalis1,2, and The ASDEX Upgrade Team1 — 1Max Planck Institute for Plasma Physics, Garching, Germany — 2Physics Department E28, Technical University Munich, Garching, Germany — 3Department of Atomic, Molecular and Nuclear Physics, Universidad de Sevilla, Sevilla, Spain
The imaging Heavy Ion Beam Probe (i-HIBP) is a new diagnostic developed at the tokamak ASDEX Upgrade in order to measure perturbations of the magnetic field, density and electrostatic potential at the plasma edge. The i-HIBP is based on launching neutrals into the plasma, where they are ionized and deflected by the Lorentz force due to the tokamak magnetic field onto a scintillator detector placed in the limiter shadow inside the vacuum vessel. The light pattern created by the scintillator contains information about the above mentioned quantities. First measurements have been obtained recently and are now evaluated. In order to obtain a quantitative understanding of the results, the simulation code iHIBPsim is used. The code solves the equation of motion for 3D fields including ionization and attenuation models for a beam with finite width and divergence.
Results will be shown demonstrating the agreement of simulation and experiment as well as the ability to observe perturbations in the edge plasma quantities. The ability of the i-HIBP to measure filaments, edge current densities and zonal flows is discussed in this contribution.