Particle transport in ion and electron scale turbulence
Paper in proceedings, 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

Author

Andreas Skyman

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

Hans Nordman

Chalmers, Earth and Space Sciences, Transport Theory

Daniel Tegnered

Chalmers, Earth and Space Sciences, Transport Theory

Raghvendra Singh

Pär Strand

Chalmers, Earth and Space Sciences, Transport Theory

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

Driving Forces

Sustainable development

Areas of Advance

Transport

Energy

Roots

Basic sciences

Subject Categories

Fusion, Plasma and Space Physics

More information

Created

10/8/2017