München 2019 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 18: Postersitzung

P 18.80: Poster

Donnerstag, 21. März 2019, 16:30–18:30, Foyer Audimax

Assesment of plasma edge transport in double null configurations in the EAST tokamak — •Dieter Boeyaert1,2, Sven Wiesen1, Wouter Dekeyser2, Stefano Carli2, and Liang Wang31Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung - Plasmaphysik, 52425 Jülich, Germany — 2KU Leuven, Department of Mechanical Engineering, Celestijnenlaan 300, 3001 Leuven, Belgium — 3Institute of Plasma Physics, Hefei 230031, China

Optimal design of power and particle exhaust is key for future fusion reactors [1]. As the targets only resist a limited heat load, the high particle and power fluxes are a challenge for a single null (SN) divertor. A redistribution of these heat loads could be obtained using other magnetic configurations. Based on [2] it is expected that the fluxes decrease using a double null (DN) configuration.

In this contribution, we study a DN configuration at EAST. The distribution of power between the inner and outer divertor is influenced by the transport of the plasma particles. Therefore the difference in particle (cross-field) flows between SN and DN configuration is studied. For this study SOLPS-ITER simulations [3] are used as it includes drifts and flows self-consistently. Based on the first modeling results the transport in EAST SN and DN cases are compared. In [4] it is shown that drifts are important in the transport for SN discharges. For the EAST DN discharges this is studied in this contribution.

[1] M. Bernert, et al. Nucl. Mater. And Energy. 2017 [2] T. Eich, et al. Plasma Phys. Control. Fusion 2005 [3] S. Wiesen, et al., Nucl. Mat. 2015 [4] F.Reimold, et al., Nucl. Mater. And Energy 2017

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