Skip to main content
Log in

Study of fast-ion losses in experiments on neutral beam injection on the Globus-M spherical tokamak

  • Tokamaks
  • Published:
Plasma Physics Reports Aims and scope Submit manuscript

Abstract

The paper presents a review of the main results on the heating of plasma ions and behavior of fast ions in experiments on neutral beam injection (NBI) carried out in 2003–2010 on the Globus-M spherical tokamak. It is noticed that, along with significant success achieved in NBI plasma heating, there is experimental evidence indicating significant losses of the power injected into the plasma. Most probably, the power is lost due to so-called first-orbit losses, i.e., losses of fast ions that are produced in plasma after ionization of beam atoms and occur in unconfined trajectories. Until recently, the absence of appropriate diagnostic equipment did not allow one to verify this hypothesis. The use of the ACORD-M charge-exchange analyzer directed tangentially to the plasma column made it possible to measure the spectra of fast ions slowed down in plasma and confirm the assumption on the presence of substantial orbit losses of fast particles (∼25–50% of the beam power). In addition to the review of the experimental results, the paper presents analysis of orbit losses on the basis of 3D simulations of fast-ion trajectories in plasma. The results of experiments on studying the influence of the magnitude of the tokamak magnetic field on the confinement of fast ions are also presented. Along with computer simulations, these experiments made it possible to formulate recommendations on the reduction of orbit losses in the Globus-M tokamak.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. F. W. Perkins, D. E. Post, N. A. Uckan, et al., Nucl. Fusion 39, 2137 (1999).

    Article  Google Scholar 

  2. M. P. Gryaznevich, R. Akers, P. G. Carolan, et al., Phys. Rev. Lett. 80, 3972 (1998).

    Article  ADS  Google Scholar 

  3. E. J. Strait, Phys. Plasmas 1, 1415 (1994).

    Article  ADS  Google Scholar 

  4. V. K. Gusev, V. E. Golant, E. Z. Gusakov, et al., Zh. Tekh. Fiz. 69(9), 58 (1999) [Tech. Phys. 44, 1054 (1999)].

    Google Scholar 

  5. V. K. Gusev, A. V. Dech, L. A. Esipov, et al., Zh. Tekh. Fiz. 77(9), 28 (2007) [Tech. Phys. 52, 1127 (2007)].

    Google Scholar 

  6. A. B. Izvozchikov, M. P. Petrov, S. Ya. Petrov, et al., Zh. Tekh. Fiz. 62(2), 157 (1992) [Tech. Phys. 37, 201 (1992)].

    Google Scholar 

  7. B. B. Ayushin, A. G. Barsukov, V. K. Gusev, et al., Fiz. Plazmy 34, 99 (2008) [Plasma Phys. Rep. 34, 81 (2008)].

    Google Scholar 

  8. V. K. Gusev, S. E. Aleksandrov, V. Kh. Alimov, et al., Nucl. Fusion 49, 104021 (2009).

    Article  ADS  Google Scholar 

  9. F. V. Chernyshev, B. B. Ayushin, V. V. Dyachenko, et al., in Proceedings of the 34th EPS Conference on Plasma Physics, Warsaw, 2007, ECA 31F, P–5.107 (2007).

    Google Scholar 

  10. V. I. Afanasyev, A. Gondhalekar, and A. I. Kislyakov, Preprint No. JET-R-(00\)04 (ECS/EEC/EURATOM, Lyxemburg, 1999).

  11. D. J. Sigmar and G. Jouce, Nucl. Fusion 14, 447 (1971).

    Article  Google Scholar 

  12. M. Wakatani, V. S. Mukhovatov, K. H. Burrell, et al., Nucl. Fusion 39, 2175 (1999).

    Article  Google Scholar 

  13. E. J. Doyle, W. A. Houlberg, Y. Kamada, et al., Nucl. Fusion 47, 18 (2007).

    Article  ADS  Google Scholar 

  14. S. Yu. Tolstyakov, G. S. Kurskiev, V. K. Gusev, et al., in Proceedings of the 37th EPS Conference on Plasma Physics, Dublin, 2010, ECA 34A, P–5.137 (2010).

    Google Scholar 

  15. V. B. Minaev, B. B. Ayushin, A. G. Barsukov, et al., in Proceedings of the 35th EPS Conference on Plasma Physics, Hersonissos, 2008, ECA 32D, P–1.110 (2008).

    Google Scholar 

  16. F. V. Chernyshev, V. I. Afanasyev, B. B. Ayushin, et al., in Proceedings of the 35th EPS Conference on Plasma Physics, Hersonissos, 2008, ECA 32D, P–2.097 (2008).

    Google Scholar 

  17. J. G. Cordey, E. P. Gorbunov, J. Hugill, et al., Nucl. Fusion 15, 441 (1975).

    Article  ADS  Google Scholar 

  18. W. W. Heidbrink and G. J. Sadler, Nucl. Fusion 34, 535 (1994).

    Article  ADS  Google Scholar 

  19. S. Yu. Tolstyakov, V. K. Gusev, M. M. Kochergin, et al., Zh. Tekh. Fiz. 76(7), 27 (2006) [Tech. Phys. 51, 846 (2006)].

    Google Scholar 

  20. L. L. Lao, H. E. St. John, R. D. Stambaugh, et al., Nucl. Fusion 25, 1611 (1985).

    Article  Google Scholar 

  21. V. K. Gusev, S. E. Bender, A. V. Dech, et al., Zh. Tekh. Fiz. 76(8), 25 (2006) [Tech. Phys. 51, 987 (2006)].

    Google Scholar 

  22. M. I. Patrov, B. B. Ayushin, V. K. Gusev, et al., in Proceedings of the 36th EPS Conference on Plasma Physics, Sofia, 2009, ECA 33E, P–5.153 (2009).

    Google Scholar 

  23. V. B. Minaev, F. V. Chernyshev, V. K. Gusev, et al., in Proceedings of the 37th EPS Conference on Plasma Physics, Dublin, 2010, ECA 34A, P–5.169 (2010).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Original Russian Text © F.V. Chernyshev, V.I. Afanasyev, V.K. Gusev, A.E. Ivanov, G.S. Kurskiev, A.D. Melnik, V.B. Minaev, M.I. Mironov, V.G. Nesenevich, M.I. Patrov, M.P. Petrov, S.Ya. Petrov, Yu.V. Petrov, N.V. Sakharov, S.Yu. Tolstyakov, 2011, published in Fizika Plazmy, 2011, Vol. 37, No. 7, pp. 595–615.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Chernyshev, F.V., Afanasyev, V.I., Gusev, V.K. et al. Study of fast-ion losses in experiments on neutral beam injection on the Globus-M spherical tokamak. Plasma Phys. Rep. 37, 553–571 (2011). https://doi.org/10.1134/S1063780X11060201

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1063780X11060201

Keywords

Navigation