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Abstract

Studies of the dynamical response of the plasma to modulated Alfv'en Wave Heating (AWH) power and to modulated gas puffing in ohmic conditions have been performed on TCA. In both cases, the radial profile of the phase of the electron temperature response exhibits a low value inside the q=1 radius, indicating the presence of a central thermal energy source. Absolute comparison of the gain and the phase in the two cases leads to the conclusion that the electron temperature perturbation during AWH is dominated by the influence of the density variation, with a peaked kinetic energy modulation profile. This at least partly explains the previously reported high performances of the AWH results.

Additional information

Authors: JOYE B, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);LISTER J B, CENTRE DE RECHERCHES EN PHYSIQUE DES PLASMAS, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND);MORET J M 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)
Bibliographic Reference: 15TH EUROPEAN CONFERENCE ON CONTROLLED FUSION AND PLASMA HEATING, DUBROVNIK (YUGOSLAVIA), MAY, 16-20, 1988, AVAILABILITY: CEC-LUXEMBOURG, DG-XIII-C-3, POB 1907, MENTIONING PAPER EN 34074 ORA
Availability: Can be ordered online
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