Exploring zonal flow mediated saturation on stellarators
Plasma Physics
2020-10-01 v1
Abstract
In stellarators, zonal flow activity depends sensitively on geometry of the three dimensional magnetic field, via an interplay of mechanisms that is not fully understood. In this work, we investigate this by studying three magnetic configurations of the Wendelstein 7-X stellarator. We find that variation in linear zonal flow damping is accompanied by variation in nonlinear drive, and identify key geometric features that control these effects. Understanding the resulting balance is important for the development of reduced models of turbulent transport.
Cite
@article{arxiv.2009.14750,
title = {Exploring zonal flow mediated saturation on stellarators},
author = {C. D. Mora Moreno and J. H. E. Proll and G. G. Plunk and P. Xanthopoulos},
journal= {arXiv preprint arXiv:2009.14750},
year = {2020}
}
Comments
11 pages, 9 figures