Control of test particle transport in a turbulent electrostatic model of the Scrape-Off-Layer
The E x 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.
Bibliographic Reference: An article published in: Journal of Nuclear Materials (2006), online edition
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Record Number: 200718982 / Last updated on: 2007-03-26
Original language: en
Available languages: en