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Home » Technical Physics Letters » Year 2022, issue 15 » Article p. 78
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Electron temperature measurements at the Globus-M2 tokamak using multi-laser Thomson scattering
Russian version
DOI: 10.21883/TPL.2022.15.54273.19019
Kurskiev G. S.1, Zhiltsov N. S.1, Koval A. N.1, Kornev A. F. 2, Makarov A. M.3, Mukhin E. E. 1, Petrov Yu. V.1, Sakharov N. V.1, Solovey V. A.4, Tkachenko E. E.1, Tolstyakov S. Yu1, Chernakov P. V. 5
1Ioffe Institute, St. Petersburg, Russia
2«Lasers & Optical Systems» Co. Ltd., St. Petersburg, Russia
3ITMO University, St. Petersburg, Russia
4Konstantinov Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute, Gatchina, Russia
5Spectral-Tech JSC, St. Petersburg, Russia
Email: e.mukhin@mail.ioffe.ru, Gleb.Kurskiev@gmail.com
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Diagnostics of the plasma electron component by the method of Thomson scattering Te(R,t) of laser radiation makes it possible to reliably measure the spatial distributions of the electron temperature and density. One of the obstacles to the implementation of TS diagnostics in thermonuclear reactors is the distortion of the spectral characteristics of the optical system due to radiation-induced absorption and contamination of optical elements with erosion products of the first wall. As a consequence, the reliability of measurements by the TS method will decrease over time. The paper describes the method of multi-laser Thomson scattering, which will solve this problem. The results of the first experiments on the Globus-M2 tokamak are also presented. Keywords: plasma diagnostic, tokamak, thomson scattering, laser diagnostic, spectroscopy.
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