Topology of the magnetic connections and modification of the boundary layer induced by the ergodic divertor of Tore Supra
The ergodic divertor of Tore Supra is designed to produce a dense, radiating, peripheral layer of cold plasma without impairing the central confinement. Like traditional divertors, the ergodic divertor establishes a magnetic connection between the confined plasma and objects in contact with the plasma: the internal wall, the mobile boundaries and the ergodic divertor. In the ergodic layer, the magnetic surfaces are broken down, and this brings about a diffuse connection. The code calculates the magnetic field lines and enables a magnetic image of the ergodic layer to be traced on the wall. This allows distribution of the thermal deposition on objects "wetted" by the plasma. Particular attention is devoted to the spreading of the heat flux or to its focussing in hot spots. The effective coefficient of heat transport under different conditions is derived analytically.
Bibliographic Reference: Paper presented: 2ème Congrès de la Division de Plasma, Orsay (FR), Sept. 3-4, 1990
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Record Number: 199011503 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr