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arXiv · 0710.5626

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

Guido Ciraolo·Philippe Ghendrih·Yanick Sarazin·Cristel Chandre·Ricardo Lima·Michel Vittot·Marco Pettini
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Abstract

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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Guido Ciraolo, Philippe Ghendrih, Yanick Sarazin, Cristel Chandre, Ricardo Lima, Michel Vittot, Marco Pettini. 2007-10-30. Control of test particle transport in a turbulent electrostatic model of the Scrape Off Layer. https://doi.org/10.1016/j.jnucmat.2006.12.030

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