Bremen 2017 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 13: Magnetic Confinement

P 13.13: Poster

Dienstag, 14. März 2017, 16:30–18:30, HS Foyer

Non-local turbulent plasma transport in fusion plasmas — •Klara Höfler1,2, Pascale Hennequin3, Tim Happel1, and Ulrich Stroth1,21Max Planck Institute for Plasma Physics, Garching, Germany — 2Physik Department E28, TUM, Garching, Germany — 3Laboratoire de Physique des Plasmas, Ecole Polytechnique, Palaiseau, France

The understanding of particle and energy transport in magnetically confined plasmas is one of the key topics in fusion research. In general both collisional and turbulent transport are described in terms of Fick's law through a diffusion coefficient and a local temperature or density gradient. There exist observations, however, where transport at one location depends on the gradients at a different position. Such a non-local description would dramatically change our physical understanding of transport in fusion plasmas. In this master thesis, turbulence measurements from different microwave diagnostics on the ASDEX Upgrade tokamak will be used and changes in the fluctuation characteristics will be correlated with profile changes. Previous observations of non-local transport will be summarized and the plans for experiments on ASDEX Upgrade as well as the relevant diagnostics will be presented.

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