Promt - a Multiposition Thomson-Scattering System for Rtp

TitlePromt - a Multiposition Thomson-Scattering System for Rtp
Publication TypeJournal Article
Year of Publication1992
AuthorsC.J Barth, M.LP Dirkx, B.JJ Grobben, G.CHM Verhaag, A.TM Wilbers, A.JH Donne
JournalReview of Scientific Instruments
Date PublishedOct
ISBN Number0034-6748

PROMT is a system for multiposition Thomson scattering in use at the Rijnhuizen Tokamak Project tokamak. Light from a ruby laser is scattered by the free electrons in the plasma and is collected along a vertical chord of 180 mm. Electron temperature and density profiles can be measured resolving up to 36 spatial elements. Scattered light is spectrally analyzed by a Littrow polychromator and subsequently detected with an intensified charge coupled device camera. At densities of 2 X 10(19) m-3 electron temperatures in the range of 50 eV-3 keV can be measured with an accuracy of approximately 5 %.



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