Bremen 2017 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 6: Helmholtz Graduate School I

P 6.13: Poster

Montag, 13. März 2017, 16:30–18:30, HS Foyer

Analysis and Modelling of JET Neon Seeded Discharges With High Radiative Power Fraction — •Stephan Glöggler2,3, Marco Wischmeier2, Matthias Bernert2, Giuseppe Calabrò4, Alexander Huber5, Christopher Lowry6, Matthew Reinke7, Sven Wiesen5, and JET Contributors11EUROfusion Consortium, JET, Culham Science Centre, Abingdon, UK — 2IPP, Garching, Germany — 3Physik-Department E28, TUM, Garching, Germany — 4ENEA for EUROfusion, Frascati, Italy — 5FZ Jülich GmbH, Jülich, Germany — 6European Commision, Brussels, Belgium — 7ORNL, Oak Ridge, USA

In future fusion devices as ITER and DEMO the power flux onto the divertor target plates will have to be reduced by deliberate seeding of impurities. In DEMO a major fraction of the induced radiative power losses must originate inside the last closed flux surface. As radiative power losses within the confined plasma might reduce the plasma confinement and impact the discharge stability it is crucial to determine and understand the underlying physical processes in high radiative discharges.

At JET neon seeded discharges were carried out and the influence of the seeding at high heating powers on the pedestal and the divertor profiles is examined. An inter-relation of these profiles with the radial radiation distribution is analyzed. Numerical simulations with the code package SOLPS-ITER (plasma fluid code B2.5 coupled with the Monte Carlo neutral code EIRENE) of these discharges are performed to complement the experimental findings.

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