Particle transport in ion and electron scale turbulence
Paper i proceeding, 2012

Micro turbulent modes have important and non-trivial effects on transport in tokamaks. This paper deals with transport of main ions and impurities in ion and electron scale turbulence, driven by ion and electron temperature gradients, and trapped electrons. Using the gyrokinetic Vlasov code GENE, results are obtained from both nonlinear and quasi-linear simulations. The transport properties are quantified by calculating the gradient of zero particle flux for steady state in source free regions of the plasma. The results are compared and contrasted with results obtained using a computationally efficient fluid model. Of particular interest are conditions of steep gradients, relevant to e.g. transport barrier conditions. Further, results from a simple s–α geometry are compared with results obtained using a JET-like magnetic equilibrium, and the effects on transport investigated.

transport

fusion

plasma physics

Författare

Andreas Skyman

Chalmers, Rymd- och geovetenskap, Transportteori

Johan Anderson

Chalmers, Rymd- och geovetenskap, Transportteori

Luis Fazendeiro

Chalmers, Rymd- och geovetenskap, Transportteori

Hans Nordman

Chalmers, Rymd- och geovetenskap, Transportteori

Daniel Tegnered

Chalmers, Rymd- och geovetenskap, Transportteori

Raghvendra Singh

Pär Strand

Chalmers, Rymd- och geovetenskap, Transportteori

Proceedings of 24th Fusion Energy Conference -- IAEA CN-197

Drivkrafter

Hållbar utveckling

Styrkeområden

Transport

Energi

Fundament

Grundläggande vetenskaper

Ämneskategorier

Fusion, plasma och rymdfysik