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Abstract

On many tokamaks the reconstruction of the magnetic field structure in the plasma is supported by polarimetric measurements. Recent proposed and realized methods are based on a far infrared laser beam with a rotating polarization ellipse. The same instrument usually performs as an interferometer measuring the line integrated plasma density. It has been shown that the rotating polarization ellipse disturbs the interferometric measurements. A method based on the principle of a rotating polarization in which the interferometric measurement is unaffected is proposed. Bench test results are presented which show the feasibility of this method.

Additional information

Authors: BARRY S, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas (CH);NIESWAND C, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas (CH);BÜHLMANN F, Ecole Polytechnique Fédérale de Lausanne, Centre de Recherches en Physique des Plasmas (CH);PRUNTY S L, University College Cork, Department of Electrical Engineering and Microelectronics (IE);MANSFIELD H M, University College Cork, Department of Electrical Engineering and Microelectronics (IE);BUHLMANN F, Ecole Polytechnique Federale de Lausanne, Centre de Recherches en Physique des Plasmas (CH)
Bibliographic Reference: Article: Rev. Sci. Instrum. (1996)
Record Number: 199610390 / Last updated on: 1996-04-15
Category: PUBLICATION
Original language: en
Available languages: en
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