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Abstract

The problem of extracting large power fluxes at the edge of tokamak plasmas with tolerable production of impurities, as well as of improving the plasma pumping efficiency, may be alleviated if the plasma interacts with the wall with a large density, small temperature. Such a configuration should be obtained by magnetic connection between the hot plasma and along the wall, if the parallel energy flux induces a temperature decrease along the flux lines, while the pressure nT tends to remain constant. This is achieved with axisymmetric divertors. On Tore Supra, this possibility is tested with the ergodic divertor, where the magnetic connection is due to a resonant magnetic perturbation which creates a stochastic layer between the hot plasma and the wall. The expected transport performance of the implemented device in the framework of the quasilinear theory is presented.

Additional information

Authors: SAMAIN A, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);GHENDRIH P, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);GROSMAN A, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);CAPES H, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);EVANS T, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR);MORERA J P, CEA, Département de Recherches sur la Fusion Contrôlée, Saint-Paul-lez-Durance (FR)
Bibliographic Reference: Paper presented: 16th European Conference on Controlled Fusion and Plasma Physics, Venezia (IT), March 13-17, 1989
Availability: Available from (1) as Paper EN 34456 ORA
Record Number: 198910808 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en