Skip to main content
Log in

Formation of internal transport barriers in Globus-M tokamak in regime with early neutral heating beam switch-on

  • Published:
Technical Physics Letters Aims and scope Submit manuscript


A series of experiments have been performed on the Globus-M spherical tokamak under conditions with additional plasma heating by a beam of neutral atoms at the stage of plasma current buildup. This regime allowed a region with negative magnetic shear to be formed in the inner plasma region adjacent to the magnetic axis. Under these conditions, the stability margin coefficient at the axis was greater than unity. This scenario of plasma heating leads to the transition to a regime of improved confinement with the formation of a broad temperature profile and peaked electron density profile due to the formation on internal barriers. Results of experiments and numerical simulations of transport processes using the ASTRA code are presented.

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


  1. V. K. Gusev et al., Nucl. Fusion 49(10), 104021 (2009).

    Article  ADS  Google Scholar 

  2. B. B. Ayushin et al., Fiz. Plazmy 34(2), 99 (2008) [Plasma Phys. Rep. 34, No. 2 (2008)].

    Google Scholar 

  3. G. V. Pereverzev and P. N. Yushmanov, Max-Plank IPP Report (2002), pp. 5–98.

  4. W. A. Houlberg et al., Phys. Plasmas 4, 3230 (1997).

    Article  ADS  Google Scholar 

  5. L. L. Lao et al., Nucl. Fusion 25, 1611 (1985).

    Article  Google Scholar 

  6. V. K. Gusev et al., Zh. Tekh. Fiz. 76(8), 25 (2006).

    Google Scholar 

  7. Progress in the ITGER Physics Basis, Nucl. Fusion 47 (2007).

  8. V. V. Bulanin, V. I. Varfolomeev, V. K. Gusev, et al., Pis’ma Zh. Tekh. Fiz. 37(7), 103 (2011) [Tech. Phys. Lett. 37, 340 (2011)].

    Google Scholar 

  9. V. V. Bulanin, L. G. Askinazi, S. V. Lebedev, et al., Plasma Phys. Control. Fusion 48, A101 (2006).

    Article  ADS  Google Scholar 

  10. G. Tresset, X. Litaudon, D. Moreau, et al., Nucl. Fusion 42, 520 (2002).

    Article  ADS  Google Scholar 

  11. R. J. Akers et al., Plasma Phys. Control. Fusion 45, A175 (2003).

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations


Corresponding author

Correspondence to G. S. Kurskiev.

Additional information

Original Russian Text © G.S. Kurskiev, V.K. Gusev, S.Yu. Tolstyakov, A.A. Berezutskii, V.V. Bulanin, V.I. Varfolomeev, M.M. Kochergin, V.B. Minaev, E.E. Mukhin, M.I. Patrov, A.V. Petrov, Yu.V. Petrov, N.V. Sakharov, V.V. Semenov, A.Yu. Yashin, N.A. Khromov, 2011, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2011, Vol. 37, No. 23, pp. 82–90.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kurskiev, G.S., Gusev, V.K., Tolstyakov, S.Y. et al. Formation of internal transport barriers in Globus-M tokamak in regime with early neutral heating beam switch-on. Tech. Phys. Lett. 37, 1127–1131 (2011).

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: