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Abstract

A large variety of plasma conditions has been created in TCV. They include elongation's in the range 1 to 2.58, triangularities between -0.7 and 1 as well as 'square' shapes and plasma currents in the range 0.1-1MA. Over the entire range of sawtoothing stationary ohmic conditions investigated we observe a remarkable correlation between electron pressure profiles and conductivity profiles as determined by multi-channel Thomsen scattering measurements, suggesting that this refers to a cross sectional area average. The broadness of the pressure profile is also seen to be strongly correlated with the location of the sawtooth inversion radius measured using a 10 camera, 200 channel, x-ray tomography diagnostic. The profiles become broader and the sawtooth inversion radius increases as the average current density is increased.

Additional information

Authors: WEISEN H, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);BEHN R, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);FURNO I, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);MORET J M, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);SAUTER O, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);TCV TEAM, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH)
Bibliographic Reference: Article: Proceedings Vol II of 1998 International Congress on Plasma Physics 25th EPS Conference on Controlled Fusion and Plasma Physics, (1998)
Record Number: 199910918 / Last updated on: 1999-07-05
Category: PUBLICATION
Original language: en
Available languages: en