Thomson Scattering Apparatus for Simultaneous Six-Position Measurements in the JFT-2 Tokamak

Thomson Scattering Apparatus for Simultaneous Six-Position Measurements in the JFT-2 Tokamak

A Thomson scattering apparatus for measuring the electron temperature and density profiles of the JFT-2 plasma has been constructed. Measuring positions are determined by six fibers separated from each other by a distance of approximately 2 cm. The Littrow type spectrometer provides 48 wavelength el...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics Vol. 21; no. 2R; p. 347
Main Authors: Yamauchi, Toshihiko, Sano, Kazuo, Kawashima, Hisato, Kumagai, Katsuaki, Matoba, Tohru
Format: Journal Article
Language:English
Published: 01-02-1982
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Summary:A Thomson scattering apparatus for measuring the electron temperature and density profiles of the JFT-2 plasma has been constructed. Measuring positions are determined by six fibers separated from each other by a distance of approximately 2 cm. The Littrow type spectrometer provides 48 wavelength elements with 57–250 Å. The 48-photo-multipliers are arranged on the output field of the fibers. Spatial profiles of T e and n e in the range 0.05–1.5 keV and 10 13 –10 14 cm -3 in the JFT-2 Tokamak have been obtained with only one discharge.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.21.347