High resolution multiposition Thomson scattering for the TEXTOR tokamak

In this article, the recently installed high resolution multiposition Thomson scattering (TS) system of the TEXTOR tokamak is presented. Light from a pulsed ruby laser is scattered by the free electrons of the plasma and transmitted by fiber optics to a polychromator for spectral analysis. The Doppl...

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Bibliographic Details
Published in:Review of Scientific Instruments 2001-01, Vol.72 (1), p.1138-1142
Main Authors: Barth, C. J., v. d. Meiden, H. J., Oyevaar, T., Cardozo, N. J. Lopes
Format: Article
Language:English
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Summary:In this article, the recently installed high resolution multiposition Thomson scattering (TS) system of the TEXTOR tokamak is presented. Light from a pulsed ruby laser is scattered by the free electrons of the plasma and transmitted by fiber optics to a polychromator for spectral analysis. The Doppler broadened spectrum of the scattered light is analyzed with a Littrow spectrometer, detected with an image intensifier, and recorded with two intensified charge coupled device cameras. Values of the electron temperature (T e ) in the range of 50 eV up to 4 keV can be measured at 450 spatial elements of 2 mm along a chord of 900 mm, with a resolution of 8 mm. The observational error on T e was found to be
ISSN:0034-6748
1089-7623
DOI:10.1063/1.1322602