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Conference Paper

Overview of magnetic structure induced by the TEXTOR-DED and the related transport


Runov,  A. M.
Max Planck Society;

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Abdullaev, S. S., Finken, K. H., Jakubowski, M. W., Kobayashi, M., Reiser, D., Runov, A. M., et al. (2003). Overview of magnetic structure induced by the TEXTOR-DED and the related transport. In Fusion Energy 2002. Vienna: International Atomic Energy Agency.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-3CF9-0
The Dynamic Ergodic Divertor (DED), a new concept of the ergodic divertor, has been presently installing for the TEXTOR tokamak. Beside the conventional ergodic divertor operation the DED also permits the operation with a rotating magnetic field which allows, in particular, to broaden the heat deposition pattern on the divertor plates. Since its first proposal of the DED in 1996 the structure of magnetic field, especially, the onset of ergodic zone of field lines and related transport in the DED-operation has been extensively studied using different theoretical and numerical methods. New methods to study the magnetic field, in particular, the field line mapping have been developed. The presentation gives the overview of the studies on the structure of magnetic field in the DED, the formation of the ergodic and laminar zones of field lines at the plasma edge. It also includes studies on the modelling efforts of the transport of heat and particles in the ergodic and laminar zones.