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Plasma Physics Reports

, Volume 45, Issue 8, pp 723–731 | Cite as

Toroidal Alfvén Modes in the Plasma of the Globus-M Spherical Tokamak

  • Yu. V. PetrovEmail author
  • N. N. Bakharev
  • V. V. Bulanin
  • V. K. Gusev
  • G. S. Kurskiev
  • A. A. Martynov
  • S. Yu. Medvedev
  • V. B. Minaev
  • M. I. PatrovEmail author
  • A. V. Petrov
  • N. V. Sakharov
  • P. B. Shchegolev
  • A. Yu. Telnova
  • S. Yu. Tolstyakov
  • A. Yu. Yashin
TOKAMAKS
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Abstract

Results of experimental studies of toroidal Alfvén eigenmodes (TAEs) in the Globus-M spherical tokamak (R = 36 cm, a = 24 cm) are reported. The experiments were carried out in a wide range of plasma parameters at a magnetic field of up to 0.5 T and plasma current of up to 250 kA. Auxiliary plasma heating was performed by tangential injection of a deuterium beam with a power of Pb= 0.75 MW and particle energy of Eb = 28 keV into deuterium plasma. The experiments have shown that the TAE-induced loss of fast particles decreases with increasing plasma current and magnetic field. Using multifrequency Doppler backscattering diagnostics, it is established that the TAEs are localized at the plasma periphery. Results of simulations of the Alfvén continuum and TAE structure by means of the modified KINX and CAXE codes agree satisfactory with the experimental data on the TAE frequencies and localization.

Notes

ACKNOWLEDGMENTS

This work was performed at the Unique Scientific Facility “Globus-M Spherical Tokamak.”

FUNDING

This work was supported by the Russian Science Foundation, project no. 17-12-01177.

REFERENCES

  1. 1.
    B. V. Kuteev, E. A. Azizov, A. S. Bykov, A. Yu. Dnestrovsky, V. N. Dokuka, G. G. Gladush, A. A. Golikov, P. R. Goncharov, M. Gryaznevich, M. I. Gurevich, A. A. Ivanov, R. R. Khairutdinov, V. I. Khripunov, D. Kingham, A. V. Klishchenko, et al., Nucl. Fusion 51, 073013 (2011).ADSCrossRefGoogle Scholar
  2. 2.
    J. E. Menard, T. Brown, L. El-Guebaly, M. Boyer, J. Canik, B. Colling, R. Raman, Z. Wang, Y. Zhai, P. Buxton, B. Covele, C. D’Angelo, A. Davis, S. Gerhardt, M. Gryaznevich, et al., Nucl. Fusion 56, 106023 (2016).ADSCrossRefGoogle Scholar
  3. 3.
    G. M. Voss, S. Davis, A. Dnestrovskij, A. Kirk, P. J. Knight, M. Loughlin, M. H. O’Brien, D. Sychugov, A. Tabasso, and H. R. Wilson, Fusion Eng. Des 83, 1648 (2008).CrossRefGoogle Scholar
  4. 4.
    Y.-K. Peng, P. J. Fogarty, T. W. Burgess, D. J. Strickler, B. E. Nelson, J. Tsai, C. A. Neumeyer, R. Bell, C. Kessel, J. Menard, D. Gates, B. LeBlanc, D. Mikkelsen, E. Fredrickson, L. Grisham, et al., Plasma Phys. Controlled Fusion 47, B263 (2005).CrossRefGoogle Scholar
  5. 5.
    M. P. Gryaznevich and S. E. Sharapov, Nucl. Fusion 40, 907 (2000).ADSCrossRefGoogle Scholar
  6. 6.
    M. P. Gryaznevich and S. E. Sharapov, Plasma Phys. Controlled. Fusion 46, 15 (2004).ADSCrossRefGoogle Scholar
  7. 7.
    E. D. Fredrickson, C. Z. Cheng, D. Darrow, G. Fu, N. N. Gorelenkov, G. Kramer, S. S. Medley, J. Menard, L. Roquemore, D. Stutman, and R. B. White, Phys. Plasmas 16, 2852 (2003).ADSCrossRefGoogle Scholar
  8. 8.
    C. Z. Cheng and M. S. Chance, Phys. Fluids 11, 3695 (1986).ADSCrossRefGoogle Scholar
  9. 9.
    E. D. Fredrickson, N. A. Crocker, R. E. Bell, D. S. Darrow, N. N. Gorelenkov, G. J. Kramer, S. Kubota, F. M. Levinton, D. Liu, S. S. Medley, M. Podestá, K. Tritz, R. B. White, and H. Yuh, Phys. Plasmas 16, 122505 (2009).ADSCrossRefGoogle Scholar
  10. 10.
    V. K. Gusev, V. E. Golant, E. Z. Gusakov, V. V. D’yachenko, M. A. Irzak, V. B. Minaev, E. E. Mukhin, A. N. Novokhatskii, K. A. Podushnikova, G. T. Razdobarin, N. V. Sakharov, E. N. Tregubova, V. S. Uzlov, O. N. Shcherbinin, V. A. Belyakov, et al., Tech. Phys. 44, 1054 (1999).CrossRefGoogle Scholar
  11. 11.
    Yu. V. Petrov, M. I. Patrov, V. K. Gusev, A. E. Ivanov, V. B. Minaev, N. V. Sakharov, S. Yu. Tolstyakov, and G. S. Kurskiev, Plasma Phys. Rep. 37, 1001 (2011).ADSCrossRefGoogle Scholar
  12. 12.
    Yu. V. Petrov, N. N. Bakharev, V. K. Gusev, V. B. Minaev, V. A. Kornev, A. D. Mel’nik, M. I. Patrov, N. V. Sakharov, S. Yu. Tolstyakov, G. S. Kurskiev, F. V. Chernyshev, and P. B. Shchegolev, Tech. Phys. Lett. 40, 1136 (2014).ADSCrossRefGoogle Scholar
  13. 13.
    Yu. V. Petrov, N. N. Bakharev, V. K. Gusev, V. B. Minaev, V. A. Kornev, G. S. Kurskiev, M. I. Patrov, N. V. Sakharov, S. Yu. Tolstyakov, and P. B. Shchegolev, J. Plasma Phys. 81, 515810601 (2015).CrossRefGoogle Scholar
  14. 14.
    Yu. V. Petrov, N. N. Bakharev, V. V. Bulanin, V. K. Gusev, G. S. Kurskiev, A. A. Martynov, S. Yu. Medvedev, V. B. Minaev, M. I. Patrov, A. V. Petrov, M. A. Petrov, V. V. Solokha, N. V. Sakharov, P. B. Shchegolev, A. Yu. Telnova, et al., in Proceedings of the 45th EPS Conference on Plasma Physics, Prague, 2018, p. 697.Google Scholar
  15. 15.
    V. V. Bulanin, V. K. Gusev, G. S. Kurskiev, V. B. Minaev, M. I. Patrov, A. V. Petrov, M. A. Petrov, Yu. V. Petrov, N. V. Sakharov, P. B. Shchegolev, V. V. Solokha, A. Yu. Telnova, S. Yu. Tolstyakov, and A. Yu. Yashin, in Proceedings of the 45th EPS Conference on Plasma Physics, Prague, 2018, p. 1416.Google Scholar
  16. 16.
    N. N. Bakharev, F. V. Chernyshev, P. R. Goncharov, V. K. Gusev, A. D. Iblyaminova, V. A. Kornev, G. S. Kurskiev, A. D. Melnik, V. B. Minaev, M. I. Mironov, M. I. Patrov, Yu. V. Petrov, N. V. Sakharov, P. B. Shchegolev, S. Yu. Tolstyakov, et al., Nucl. Fusion 55, 043023 (2015).ADSCrossRefGoogle Scholar
  17. 17.
    N. N. Bakharev, V. V. Bulanin, F. V. Chernyshev, V. K. Gusev, N. A. Khromov, E. O. Kiselev, G. S. Kurskiev, A. D. Melnik, V. B. Minaev, M. I. Mironov, I. V. Miroshnikov, M. I. Patrov, A. V. Petrov, Yu. V. Petrov, N. V. Sakharov, et al., Nucl. Fusion 58, 126029 (2018).ADSCrossRefGoogle Scholar
  18. 18.
    V. B. Minaev, V. K. Gusev, N. V. Sakharov, Y. V. Petrov, V. I. Varfolomeev, N. N. Bakharev, E. N. Bondarchuk, F. V. Chernyshev, A. A. Kavin, N. A. Khromov, G. S. Kurskiev, A. B. Mineev, A. N. Novokhatsky, K. Y. Oshuev, M. I. Patrov, et al., in Proceedings of the 45th EPS Conference on Plasma Physics, Prague, 2018, p. 1164.Google Scholar
  19. 19.
    A. Y. Yashin, V. V. Bulanin, A. V. Petrov, M. A. Petrov, V. K. Gusev, N. A. Khromov, G. S. Kurskiev, M. I. Patrov, Y. V. Petrov, S. Y. Tolstyakov, and D. V. Prisyazhnyuk, J. Instrum. 10, 10023 (2015).CrossRefGoogle Scholar
  20. 20.
    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).ADSCrossRefGoogle Scholar
  21. 21.
    N. N. Bakharev, V. K. Gusev, A. D. Iblyaminova, V. A. Kornev, G. S. Kurskiev, A. D. Mel’nik, V. B. Minaev, M. I. Patrov, Yu. V. Petrov, N. V. Sakharov, S. Yu. Tolstyakov, N. A. Khromov, F. V. Chernyshev, P. B. Shchegolev, and F. Vagner, Tech. Phys. Lett. 39, 1085 (2013).ADSCrossRefGoogle Scholar
  22. 22.
    M. S. Chu, J. M. Greene, L. L. Lao, A. D. Turnbull, and M. S. Chance, Phys. Fluids B 4, 3713 (1992).ADSCrossRefGoogle Scholar
  23. 23.
    L. Degtyarev, S. Medvedev, F. Troyon, L. Villard, and R. Gruber, Comput. Phys. Commun. 103, 10 (1997).ADSCrossRefGoogle Scholar
  24. 24.
    S. Yu. Medvedev, L. Villard, L. M. Degtyarev, A. A. Martynov, R. Gruber, and F. Troyon, in Proceedings of the 20th EPS Conference on Controlled Fusion and Plasma Physics, Lisbon, 1993, ECA 17C, 1279 (1993).Google Scholar
  25. 25.
    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).Google Scholar
  26. 26.
    L. L. Lao, H. St. John, R. D. Stambaugh, A. G. Kellman, and W. Pfeiffer, Nucl. Fusion 25, 1611 (1985).CrossRefGoogle Scholar

Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • Yu. V. Petrov
    • 1
    Email author
  • N. N. Bakharev
    • 1
  • V. V. Bulanin
    • 1
    • 2
  • V. K. Gusev
    • 1
  • G. S. Kurskiev
    • 1
  • A. A. Martynov
    • 3
    • 4
  • S. Yu. Medvedev
    • 3
    • 4
  • V. B. Minaev
    • 1
  • M. I. Patrov
    • 1
    Email author
  • A. V. Petrov
    • 2
  • N. V. Sakharov
    • 1
  • P. B. Shchegolev
    • 1
  • A. Yu. Telnova
    • 1
  • S. Yu. Tolstyakov
    • 1
  • A. Yu. Yashin
    • 1
    • 2
  1. 1.Ioffe Institute, Russian Academy of SciencesSt. PetersburgRussia
  2. 2.St. Petersburg Polytechnic UniversitySt. PetersburgRussia
  3. 3.Keldysh Institute of Applied Mathematics, Russian Academy of SciencesMoscowRussia
  4. 4.National Research Center “Kurchatov Institute”MoscowRussia

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