April 4-6

Abstract Details

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Author: Braden T Buck
Requested Type: Poster
Submitted: 2022-03-04 00:28:07

Co-authors: W.Dorland, N.Mandell

Contact Info:
Purdue University
9554 Walnut St
Taylorsville, IN   47280

Abstract Text:
Following optimizations to reduce neoclassical losses, turbulent transport will be the dominant mode of transport in modern stellarator designs. The geometric properties of the three-dimensional confining magnetic field that influence the behavior of turbulence are not well-understood. In an analytic model developed by Hegna, Terry, & Faber (2018), specific geometric quantities of the confining magnetic field that influence the turbulence associated with the Ion Temperature Gradient (ITG) instability have been identified. We compare predictions of this model against nonlinear gyrokinetic simulations performed with the GX gyrokinetic solver. We attempt to quantify the overall degree to which the behaviors of the model are reflected in the detailed nonlinear gyrokinetic simulations.