Impurity transport in ITG and TE mode dominated turbulence
Conference poster, 2010

The transport properties of impurities is of high relevance for the performance and optimisation of magnetic fusion devices. For instance, impurities from plasma-facing surfaces accumulating in the core dilute the plasma and lead to unacceptable energy loss in the form of radiation. In the present study, turbulent impurity transport in tokamak plasmas, driven by Ion Temperature Gradient (ITG) and Trapped Electron (TE) modes, is investigated using fluid and gyrokinetic models. Quasilinear (QL) results obtained from the GENE code are compared with fluid results for ITG and TE mode dominated turbulence. Scalings of the peaking factor with impurity charge (Z) and various parameters are studied. Of particular interest are conditions favouring an outward convective impurity flux.

transport

plasma physics

fusion

Author

Andreas Skyman

Chalmers, Department of Radio and Space Science, Transport Theory

Hans Nordman

Chalmers, Department of Radio and Space Science, Transport Theory

Pär Strand

Chalmers, Department of Radio and Space Science, Transport Theory

Frank Jenko

Florian Merz

EPS 2010

Driving Forces

Sustainable development

Areas of Advance

Energy

Roots

Basic sciences

Subject Categories

Other Physics Topics

Fusion, Plasma and Space Physics

More information

Created

10/7/2017