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Neutral Injection Complex for Globus-M2 Spherical Tokamak

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Abstract

The injection complex that heats plasma of Globus-M2 spherical tokamak consists of two injectors which supply high-energy beams of hydrogen (deuterium) atoms into the device’s plasma. Injectors are autonomous and allow for preparing and setting up the device and measuring the parameters of the atomic beam independently of the other injector and of the tokamak. The authors provide detailed analysis of each injector’s configuration, substantiate their selection of the experiment layout for introducing beams into the tokamak plasma, set forth characteristics of both injectors’ atomic beams injected into the tokamak plasma, and discuss the results of experiments on additional heating of Globus-M2 tokamak plasma obtained by injecting two atomic beams.

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ACKNOWLEDGMENTS

The study was carried out at the Unique Scientific Facility “Spherical Globus-M tokamak,” which is a part of the Federal Center for Collective Use “Materials Science and Diagnostics in Advanced Technologies” of the Ioffe Institute.

Funding

Research in the “Second Atomic Injector Commissioning and Achieving Design Parameters” Section are supported by the State Assignment (0040-2019-0023). The development of a new IPM-3 three-electrode IOS ion source was supported in part by the Ministry of Science and Higher Education of the Russian Federation under the State Assignment (research project code FWGM-2022-0016). Experiments with the injection of two atomic beams into the Globus-M2 tokamak plasma were supported by the State Assignment (0034-2021-0001).

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Shchegolev, P.B., Minaev, V.B., Telnova, A.Y. et al. Neutral Injection Complex for Globus-M2 Spherical Tokamak. Plasma Phys. Rep. 49, 1501–1514 (2023). https://doi.org/10.1134/S1063780X23601098

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