Distinctive Features of Measuring Te and ne Spatial Distributions in the Globus-M2 Spherical Tokamak Using Method of Thomson Scattering of Laser Radiation

IF 0.9 4区物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS Plasma Physics Reports Pub Date : 2024-05-16 DOI:10.1134/s1063780x24600099

N. S. Zhiltsov, G. S. Kurskiev, V. A. Solovey, E. E. Tkachenko, S. Yu. Tolstyakov, I. M. Balachenkov, N. N. Bakharev, V. I. Varfolomeev, A. V. Voronin, V. K. Gusev, V. Yu. Goryainov, V. V. D’yachenko, N. V. Ermakov, A. A. Kavin, E. O. Kiselev, A. N. Konovalov, S. V. Krikunov, V. B. Minaev, A. B. Mineev, I. V. Miroshnikov, E. E. Mukhin, A. N. Novokhatsky, M. I. Patrov, Yu. V. Petrov, A. M. Ponomarenko, N. V. Sakharov, O. M. Skrekel’, V. V. Solokha, A. Yu. Telnova, V. A. Tokarev, E. A. Tukhmeneva, S. V. Filippov, N. A. Khromov, P. B. Shchegolev, K. D. Shulyatiev, A. Yu. Yashin

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Abstract

The results of measuring the electron temperature and density spatial distributions in plasma of the Globus-M2 tokamak using the Thomson scattering diagnostics are presented. The diagnostics provides measurements throughout the entire tokamak discharge, starting from time of gas breakdown. The Thomson scattering data were analyzed in order to determine the positions of the last closed flux surface, the plasma magnetic axis, and the radius of inversion during the saw-tooth oscillations. The results of measurements performed during the internal reconnection of magnetic field lines are presents, as well as the dynamics of spatial distributions of electron temperature, density and pressure during the plasma transition to the H-mode. The results of measuring the electron temperature distribution in the scrape-off layer using the Thomson scattering diagnostics are also presented for distances up to 4 cm outside the last closed flux surface.

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利用汤姆逊激光散射法测量 Globus-M2 球形托卡马克中 Te 和 ne 空间分布的显著特点

摘要介绍了利用汤姆逊散射诊断法测量 Globus-M2 托卡马克等离子体中电子温度和密度空间分布的结果。该诊断仪从气体击穿开始，对整个托卡马克放电过程进行测量。对汤姆逊散射数据进行了分析，以确定最后一个闭合磁通量面的位置、等离子体磁轴以及锯齿振荡期间的反转半径。报告还介绍了磁场线内部再连接期间的测量结果，以及等离子体向H模式过渡期间电子温度、密度和压力的空间分布动态。此外，还介绍了使用汤姆逊散射诊断法测量刮离层电子温度分布的结果，测量距离为最后一个封闭磁通表面外最多 4 厘米。

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来源期刊

Plasma Physics Reports 物理-物理：流体与等离子体

CiteScore

1.90

自引率

36.40%

发文量

104

审稿时长

4-8 weeks

期刊介绍： Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.