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Multifunctional Probe for Studying Plasma–First Wall Interactions at the TRT Tokamak

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Abstract

The diagnostic methods and devices used to study the interaction of plasma with materials in modern fusion facilities are considered. Based on the analysis of methods and devices, it is concluded that the measurements performed by them, separated in space and time, do not provide a sufficiently complete amount of information necessary to identify the mechanisms, regularities, and parameters of the development of processes on the surface of the first wall under plasma exposure. A multifunctional diagnostic probe is proposed, which includes materials science and spectrometric parts, as well as single and double Langmuir and Mach probes. The multifunctional probe is designed to carry out a set of mass spectrometric and materials science measurements necessary to identify the mechanisms and regularities of phenomena on the surface of the first wall of a thermonuclear facility under intense plasma irradiation, as well as to measure the parameters of impurity flows into the plasma.

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Authors and Affiliations

  1. National Research Nuclear University “MEPhI”, 115409, Moscow, Russia

    L. B. Begrambekov & A. V. Grunin

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  1. L. B. Begrambekov
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  2. A. V. Grunin
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Correspondence to L. B. Begrambekov or A. V. Grunin.

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Translated by L. Mosina

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Begrambekov, L.B., Grunin, A.V. Multifunctional Probe for Studying Plasma–First Wall Interactions at the TRT Tokamak. Plasma Phys. Rep. 48, 1414–1421 (2022). https://doi.org/10.1134/S1063780X2260116X

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  • DOI: https://doi.org/10.1134/S1063780X2260116X

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