Turbulent particle transport driven by ion and electron modes
Conference poster, 2012

The topic of this work is turbulent transport of main ions and impurities driven by ion (ITG) and electron modes (TE and electron scale ETG) in tokamaks. Regions relevant to the pedestal of H-mode plasmas (i.e. steep density gradients) are of particular interest. Using the code GENE, quasilinear (QL) and nonlinear (NL) gyrokinetic simulations are performed. Results are compared with a computation ally efficient fluid model. Transport is quantified by the density gradient of zero particle flux, related to the balance of convection and diffusion. This measure of the impurity peaking is calculated for ITG and TE mode turbulence, and conditions for zero main ion flux is investigated for ETG. Further, the quality of He ash removal is studied.

transport

plasma physics

fusion

Author

Andreas Skyman

Chalmers, Earth and Space Sciences, Transport Theory

Hans Nordman

Chalmers, Earth and Space Sciences, Transport Theory

Johan Anderson

Chalmers, Earth and Space Sciences, Transport Theory

Luis Fazendeiro

Chalmers, Earth and Space Sciences, Transport Theory

Pär Strand

Chalmers, Earth and Space Sciences, Transport Theory

Daniel Tegnered

Chalmers, Earth and Space Sciences, Transport Theory

Raghvendra Singh

EPS 2012

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Roots

Basic sciences

Subject Categories

Other Physics Topics

Fusion, Plasma and Space Physics

More information

Created

10/7/2017