Microwave Preionization System of the MEPHIST-0 Tokamak
https://doi.org/10.56304/S2079562922030022
Abstract
Microwave preionization is a common technique used for electron-cyclotron resonance assisted plasma start-up in spherical tokamaks. The aim of the study is to test features of the developed MEPhIST tokamak preionization system. The study explores the preliminary preionization plasma. The gas discharge parameters were measured using Rogowski coils, optical spectroscopy, and Langmuir probes. Additionally, CCD – camera captured the emission evolution during discharge. The results obtained demonstrate that the plasma discharge was localized in the discharge vessel. The calculated plasma density and electron temperature were 5.5 × 1016 m–3 and 8 eV, respectively. The study enables a better understanding of the preionization process in the MEPhIST-0.
About the Authors
A. I. Alieva
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
A. S. Prishvitsyn
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
N. E. Efimov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
S. A. Krat
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
A. S. Isakova
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
A. V. Kaziev
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
G. M. Vorobyov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
V. A. Kurnaev
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 115409
References
1. Regan S.P., et al. // Nucl. Fusion. 2005. V. 45 (10). P. S245.
2. Gryaznevich M., Shevchenko V., Sykes A. // Nucl. Fusion. 2006. V. 46 (8). P. S573.
3. Bae Y.S., et al. // Nucl. Fusion. 2008. V. 49 (2). P. 022001.
4. Kobayashi T., et al. // EPJ Web Conf. 2015. V. 87. P. 04008.
5. Lohr J., et al. // Fusion Sci. Technol. 2005. V. 48 (2). P. 1226.
6. Choe W., et al. // Rev. Sci. Instrum. 2000. V. 71 (7). P. 2728.
7. Khan R., et al. // Fusion Eng. Des. 2018. V. 126. P. 10.
8. Yexi H., et al. // Plasma Sci. Technol. 2006. V. 8 (1). P. 84.
9. Jo J.G., et al. // Phys. Plasmas. 2017. V. 24 (1). P. 012103.
10. Chektybayev B. // Fusion Eng. Des. 2021. V. 163. P. 112167.
11. Kurnaev V.A., et al. // Phys. At. Nucl. 2019. V. 82. P. 1329.
12. Yu Y., et al. // AIP Adv. 2018. V. 8 (9). P. 095015.
Review
For citations:
Alieva A.I., Prishvitsyn A.S., Efimov N.E., Krat S.A., Isakova A.S., Kaziev A.V., Vorobyov G.M., Kurnaev V.A. Microwave Preionization System of the MEPHIST-0 Tokamak. Nuclear Physics and Engineering. 2023;14(1):87-93. (In Russ.) https://doi.org/10.56304/S2079562922030022
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