Bulletin of the American Physical Society
63rd Annual Meeting of the APS Division of Plasma Physics
Volume 66, Number 13
Monday–Friday, November 8–12, 2021; Pittsburgh, PA
Session PP11: Poster Session VI:
BEAMS- Computational, Analytical, Measurement, and Diagnostic Techniques for Lasers and Beams, Laser-Plasma Wakefield, Beam-Plasma Wakefield, and Direct Laser Accelerators
Low Temperature Plasma
MFE- Edge and Pedestal Stellarators
Mini-Conference on Machine Learning
2:00 PM - 5:00 PM
Wednesday, November 10, 2021
Room: Hall A
Abstract: PP11.00041 : Scrape-off layer transport from a gyrokinetic perspective*
Presenter:
Michael Churchill
(Princeton Plasma Physics Laboratory)
Authors:
Michael Churchill
(Princeton Plasma Physics Laboratory)
Choongseok Chang
(Princeton Plasma Physics Laboratory)
Seung Hoe Ku
(Princeton Plasma Physics Laboratory)
Robert Hager
(Princeton Plasma Physics Laboratory)
In this work, we seek to further understand the turbulence and transport from the gyrokinetic perspective, including these XGC1 simulations of ITER. For current devices, by comparing XGC distribution functions to a reduced gyrofluid equation, it was shown that the drifts play an important role in parallel momentum balance [2]. This work will be extended to a gyrofluid-like energy conservation equation, to interpret from the XGC results how terms like the radial heat flux vary across the scrape-off layer, past the X-point and down into the divertor. These results will combine to give a better picture and basis for the mechanisms driving the increases divertor heat-flux width in the XGC1 simulations of the full-current ITER simulations.
[1] C.S. Chang, S. Ku, A. Loarte, V. Parail, F. Köchl, M. Romanelli, R. Maingi, J.-W. Ahn, T. Gray, J. Hughes, B. LaBombard, T. Leonard, M. Makowski, J. Terry, Nucl. Fusion 57 (2017) 116023.
[2] R.M. Churchill, C.S. Chang, S. Ku, R. Hager, R. Maingi, D.P. Stotler, H. Qin, Nucl. Fusion 59 (2019) 096002.
*This work is funded through the SciDAC program by the U.S. Department of Energy, Office of Fusion Energy Science and Office of Advanced Scientific Computing Research under contract No. DE-AC02-09CH11466 with Princeton University for Princeton Plasma Physics Laboratory
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