Community Research and Development Information Service - CORDIS

Abstract

Changes to the limiter material and to the rf antenna construction reduced the metallic impurity content to a low level with P-rad(0)/P-oh(0) less than 5 %. Following these improvements, the maximum possible rf power, 400 kW, has been accepted by the plasma. The clean conditions have shown up the importance of the resonant mode structure, the role played by toroidal coupling in low-n excitation and the relationship between the impurity line intensities and the rf wavefield. All these results were obtained with completely unshielded antennae. Lateral antenna screens were added which further reduced the metallic impurity concentration during the rf pulse and consequently allowed both sustained electron and ion heating as well as a reduction in the loop voltage during the rf pulse. The edge plasma conditions during the rf pulse are also different with side screens.

Additional information

Authors: DE CHAMBRIER A, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);COLLINS G A, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);DUPERREX P A, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);HEYM A, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);HOFMANN F, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);HOLLENSTEIN C, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);JOYE B, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);KELLER R, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);NOWAK S CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND), CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND), CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);UNIVERSITY OF FRIBOURG (SWITZERLAND)
Bibliographic Reference: 10TH INTERNATIONAL CONFERENCE ON PLASMA PHYSICS AND CONTROLLED NUCLEAR FUSION RESEARCH, LONDON (UK), SEPT. 12- 19, 1984 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 31702 ORA
Availability: Can be ordered online
Record Number: 1989123011600 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en