Developing an edge-plasma diagnostic tool for the Globus-M tokamak based on measuring ratios of HeI lines

A diagnostic technique that is based on measuring the ratios of neutral-helium line strengths has been developed for peripheral distributions of electron temperature and density of tokamak plasma. The main components of the technique are a four-channel filter-lens imaging polychromator (FLIP-4) and...

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Bibliographic Details
Published in:Technical physics letters 2016-08, Vol.42 (8), p.775-778
Main Authors: Timokhin, V. M., Rykachevskii, A. I., Miroshnikov, I. V., Sergeev, V. Yu, Kochergin, M. M., Koval’, A. N., Mukhin, E. E., Tolstyakov, S. Yu, Voronin, A. V.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Diagnostic software
Diagnostic systems
Electron energy
Helium
Joint European Torus
Magnetism
Physics
Physics and Astronomy
Plasma
Plasmas (physics)
Tokamak devices
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Summary:A diagnostic technique that is based on measuring the ratios of neutral-helium line strengths has been developed for peripheral distributions of electron temperature and density of tokamak plasma. The main components of the technique are a four-channel filter-lens imaging polychromator (FLIP-4) and a Phantom Miro M110 high-speed camera for recording the images. The polychromator has been assembled, adjusted, and tested on an optical test bench. The optical system was installed on the spherical Globus-M tokamak. Some preliminary experiments were carried out. Images of the plasma-gun jet were obtained at neutralhelium lines.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785016080162