Impurity transport in ITG and TE mode dominated turbulence
Poster (konferens), 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

Författare

Andreas Skyman

Chalmers, Institutionen för radio- och rymdvetenskap, Transportteori

Hans Nordman

Chalmers, Institutionen för radio- och rymdvetenskap, Transportteori

Pär Strand

Chalmers, Institutionen för radio- och rymdvetenskap, Transportteori

Frank Jenko

Florian Merz

EPS 2010

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Annan fysik

Fusion, plasma och rymdfysik