Bulletin of the American Physical Society
76th Annual Gaseous Electronics Conference
Volume 68, Number 9
Monday–Friday, October 9–13, 2023; Michigan League, Ann Arbor, Michigan
Session EW1: Modeling & Simulation II: Particle in Cell
8:00 AM–9:15 AM,
Wednesday, October 11, 2023
Room: Michigan League, Vandenberg
Chair: Mate Vass, Ruhr University Bochum, Germany
Abstract: EW1.00005 : Accuracy of the Explicit Energy-Conserving Particle-in-Cell Method for Under-resolved Simulations of Capacitively Coupled Discharges*
9:00 AM–9:15 AM
Presenter:
Andrew Tasman T Powis
(Princeton Plasma Physics Laboratory)
Authors:
Andrew Tasman T Powis
(Princeton Plasma Physics Laboratory)
Igor D Kaganovich
(Princeton Plasma Physics Laboratory)
We perform one-dimensional simulations of a large (30cm) Helium CCP discharge using both the momentum and energy-conserving PIC methods and consider the fully resolved case and progressively underresolved cases. The energy-conserving method proves to be far more accurate than the traditional method in underresolved cases and only begins to reduce in accuracy when the cell sizes become comparable to the sheath size. When considering the gains available in higher dimensions we see this algorithm as a viable technique to significantly reduce the cost of plasma simulations relevant to industry.
[1] H. R. Lewis, J. of Comp. Phys., 6(1), 136-141 (1970)
[2] D. C. Barnes & L. Chacón, Comp. Phys. Comm., 258, 107560 (2021)
*This research was funded by the US Department of Energy, Fusion Energy Science.
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