Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session BO03: Stellarators and Helical Systems: W7-X, LHD, HSX, CTH, and Others
9:30 AM–12:18 PM,
Monday, October 17, 2022
Room: Ballroom 100 C
Chair: Andrew Ware, University of Montana
Abstract: BO03.00004 : Optimizing stellarators for turbulent impurity and energy transport using linear gyrokinetic simulations*
10:06 AM–10:18 AM
Presenter:
Stefan Buller
(University of Maryland, College Park)
Authors:
Stefan Buller
(University of Maryland, College Park)
Matt Landreman
(University of Maryland)
Rahul Gaur
(University of Maryland)
In this work, we investigate the possibility of using linear gyrokinetic simulations to find stellarators that simultanously satisfy these criteria. Linear simulations are fast enough to be suitable for inclusion in stellarator optimization loops, but may not be a good proxy for the full nonlinear behaviour. However, the ratio of particle and energy fluxes from linear simulations are often more reliable than the individual fluxes, which suggests that the ratio of impurity to energy transport might be a useful proxy for optimization. We investigate this proxy by comparing linear and nonlinear simulations.
*This work was supported by the U.S. Department of Energy award DE-FG02-93ER54197.
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