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Abstract

The Far-infrared interferometer system of the TCV has recently been extended. 14 vertical chords are now available and the measurement of the Faraday rotation induced by the poloidal magnetic field has now been implemented.

A method first developed and applied by B.W Rice on MTX uses a rotating eliptical polarization of the probing beam. The disadvantage of this method is however the loss of the time resolution on the simultaneous interferometric measurements. The rotation of the polarization causes a perturbation of the line integrated density signal, which cannot be neglected and can eventually disturb the real time density feedback of the TCV. .

Additional information

Authors: BARRY S, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);NIESWAND C, Centre de Recherche en Physique des Plasmas Ecole Polytechnique Federale, Lausanne (CH);HOFMANN F, 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: 199910919 / Last updated on: 1999-07-05
Category: PUBLICATION
Original language: en
Available languages: en