Control of test particle transport in a turbulent electrostatic model of the Scrape Off Layer

Details Control of test particle transport in a turbulent electrostatic model of the Scrape Off Layer Control of test particle transport in a turbulent electrostatic model of the Scrape Off Layer

2007-10-30

arxiv.org/abs/0710.5626v1

Journal of Nuclear Materials 363-365 (2007) 550-554

Physics

Plasma Physics

Scientific paper

10.1016/j.jnucmat.2006.12.030

The ${\bm E}\times{\bm B}$ drift motion of charged test particle dynamics in the Scrape Off Layer (SOL)is analyzed to investigate a transport control strategy based on Hamiltonian dynamics. We model SOL turbulence using a 2D non-linear fluid code based on interchange instability which was found to exhibit intermittent dynamics of the particle flux. The effect of a small and appropriate modification of the turbulent electric potential is studied with respect to the chaotic diffusion of test particle dynamics. Over a significant range in the magnitude of the turbulent electrostatic field, a three-fold reduction of the test particle diffusion coefficient is achieved.

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