Abstract
We present new information on the development of Alfvén modes on the Globus-M2 spherical tokamak. Data have been obtained using a V-band Doppler reflectometer with probing radiation frequencies from 50 to 75 GHz. Аs a multifrequency source of probing radiation, a microwave harmonic synthesizer has been used. As a result of using the new reflectometer, the toroidal Alfvén mode localization in a magnetic field of 0.5 T has been obtained. The spectral components of the Alfvén mode with Doppler frequency shifts caused by toroidal plasma rotation have been registered. In the central regions of the discharge, so-called “Alfvén cascades” have been investigated.
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REFERENCES
V. V. Bulanin, V. K. Gusev, G. S. Kurskiev, V. B. Minaev, M. I. Patrov, A. V. Petrov, M. A. Petrov, Yu. V. Petrov, A. Yu. Tel’nova, and A. Yu. Yashin, Tech. Phys. Lett. 43, 1067 (2017). https://doi.org/10.1134/S1063785017120033
V. V. Bulanin, V. K. Gusev, G. S. Kurskiev, V. B. Minaev, M. I. Patrov, A. V. Petrov, Yu. V. Petrov, and A. Yu. Yashin, Tech. Phys. Lett. 45, 1107 (2019). https://doi.org/10.1134/S1063785019110051
V. V. Bulanin, N. N. Bakharev, V. K. Gusev, G. S. Kurskiev, V. B. Minaev, M. I. Patrov, A. V. Petrov, Yu. V. Petrov, N. V. Sakharov, P. B. Shchegolev, A. Yu. Tel’nova, S. Yu. Tolstyakov, and A. Yu. Yashin, Vopr. At. Nauki Tekh., Ser.: Termoyad. Sintez 42 (4), 52 (2019). https://doi.org/10.21517/0202-3822-2019-42-4-52-60
N. N. Bakharev, I. M. Balachenkov, F. V. Chernyshev, I. N. Chugunov, V. V. Dyachenko, V. K. Gusev, M. V. Iliasova, E. M. Khilkevitch, N. A. Khromov, E. O. Kiselev, A. N. Konovalov, G. S. Kurskiev, V. B. Minaev, A. D. Melnik, I. V. Miroshnikov, et al., Plasma Phys. Rep. 46, 675 (2020). https://doi.org/10.1134/S1063780X20070016
W. A. Peebles, T. L. Rhodes, J. C. Hillesheim, L. Zeng, and C. Wannberg, Rev. Sci. Instrum. 81, 10D902 (2010). https://doi.org/10.1063/1.3464266
S. Yu. Medvedev, A. A. Martynov, V. K. Gusev, Yu. V. Petrov, M. I. Patrov, A. Yu. Tel’nova, A. A. Ivanov, and Yu. Yu. Poshekhonov, Vopr. At. Nauki Tekh., Ser.: Termoyad. Sintez 41 (2), 95 (2018). https://doi.org/10.21517/0202-3822-2018-41-2-95-104
E. J. Strait, W. W. Heidbrink, and A. D. Turnbull, Plasma Phys. Control. Fusion 36, 1211 (1994). 10.1088/0741-3335/36/7/00
S. E. Sharapov, Trans. Fusion Sci. Technol. 61, 104 (2012). https://doi.org/10.13182/FST12-A13497
T. Markovic, J. Stockel, J. Seidl, A. Melnikov, and S. Medvedev, in Proceedings of the 23rd Annual Conference of Doctoral Students WDS 2014 (Prague, 2014), p. 199.
M. Podestá, R. E. Bell, A. Bortolon, N. A. Crocker, D. S. Darrow, A. Diallo, E. D. Fredrickson, G.-Y. Fu, N. N. Gorelenkov, W. W. Heidbrink, G. J. Kramer, S. Kubota, B. P. LeBlanc, S. S. Medley, and H. Yuh, Nucl. Fusion 52, 094001 (2012). https://doi.org/10.1088/0029-5515/52/9/094001
I. M. Balachenkov, Yu. V. Petrov, V. K. Gusev, N. N. Bakharev, V. V. Bulanin, V. I. Varfolomeev, N. S. Zhil’tsov, E. O. Kiselev, G. S. Kurskiev, V. B. Minaev, M. I. Patrov, A. V. Petrov, A. M. Ponomarenko, N. V. Sakharov, A. Yu. Tel’nova, et al., Tech. Phys. Lett. 46 (12) (2020, in press). https://doi.org/10.21883/PJTF.2020.23.50338.18450
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This work was supported by the Russian Science Foundation, project no. 17-12-01177-P.
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Translated by G. Dedkov
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Bulanin, V.V., Balachenkov, I.M., Varfolomeev, V.I. et al. Investigations of Alfvén Modes at the Globus-M2 Tokamak Using a V-Band Multifrequency Doppler Reflectometer. Tech. Phys. Lett. 47, 197–200 (2021). https://doi.org/10.1134/S1063785021020206
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DOI: https://doi.org/10.1134/S1063785021020206