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Approaching to the ideal condition of plasma confinement by applying external resonant fields in IR-T1 tokamak

Published online by Cambridge University Press:  05 February 2015

Sakineh Meshkani ,
Mahmood Ghoranneviss  and
Mansoureh Lafouti
Sakineh Meshkani*
Affiliation:
Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
Mahmood Ghoranneviss
Affiliation:
Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
Mansoureh Lafouti
Affiliation:
Department of Physics, Damavand Branch, Islamic Azad University, Damavand, Iran
*
†Email address for correspondence: [email protected]
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Abstract

For understanding the effect of resonant helical magnetic field (RHF) and bias on the edge plasma turbulent transport, the radial and poloidal electric field (Er, EP), poloidal and toroidal magnetic field (BP, Br) were detected by the Langmuir probe, magnetic probe and diamagnetic loop. The poloidal, toroidal and radial velocity (VP, Vr, Vt) can be determined from the electric and magnetic field. In the present work, we have investigated the effect of the magnitude of bias (Vbias = 200v, Vbias = 320v) on Er, EP, BP, Bt, VP, Vr, Vt. Moreover, we applied RHF with L = 2, L = 3 and L = 2 and 3 and investigate the effect of the helical windings radius on above parameters. Also, the experiment was repeated by applying the positive biasing potentials and RHF's simultaneously. The results show that by applying bias to the plasma at t = 15 msec at r/a = 0.9, Er, BP and Bt increase while EP decreases. The best modification occurs at Vbias = 200v. By applying RHF to the plasma, both the electric and magnetic field vary. Er reaches the highest in the presence of RHF with L = 3. The same results are obtained for BP, Bt, VP and Vt. While the inverse results are obtained for EP and Vr. Finally, RHF and bias are applied simultaneously to the plasma. With applied bias with Vbias = 200v and RHF with L = 2 and 3, we reach to the ideal circumstance. The same results obtain in the situation with Vbias = 320v and RHF with L = 2 and 3.

Type
Research Article
Information
Journal of Plasma Physics , Volume 81 , Issue 3 , June 2015 , 905810313
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Copyright
Copyright © Cambridge University Press 2015 

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References

REFERENCES

Burrel, K. H. 1997 Phys. Plasmas 4, 1499.CrossRefGoogle Scholar
Freidberg, J. P. 1987 Ideal MHD, Oxford: Clarendon.Google Scholar
Ghorannevis, M., Shariatzadeh, S. R., TalebiTaher, A. Taher, A., Salem, M. K., Arvin, R., Mohammadi, S., Ghasemloo, M. and Tarkeshian, R. 2007 Sci. I. A. U (JSIAU) 17, 63.Google Scholar
Hutchinson, I. H. 1987 Principles of Plasma Diagnostics, Cambridge: Cambridge University Press.Google Scholar
Lafouti, M., Ghoranneviss, M., Meshkani, S. and Salar Elahi, A. 2013a J. Plasma Physics, 79 (5), pp. 765–770.CrossRefGoogle Scholar
Lafouti, M., Ghoranneviss, M., Meshkani, S. and Salar Elahi, A. 2013b J. Rev. Sci. Instrum. 84, 053504; doi: 10.1063/1.4805066.CrossRefGoogle Scholar
Meshkani, S., Ghoranneviss, M., Lafouti, M. and Salar Elahi, A. 2013a J. Plasma Physics, 79 (5), pp. 647–655.CrossRefGoogle Scholar
Meshkani, S., Ghoranneviss, M., Lafouti, M. and Salar Elahi, A. 2013b J. Fusion Energ. 32, pp. 496–502.CrossRefGoogle Scholar
Salar Elahi, A. and Ghoranneviss, M. 2010 J. Fusion Energ, 29 (1), pp. 1–4.CrossRefGoogle Scholar
Salar Elahi, A. and Ghoranneviss, M. 2011 J. Nuclear and Particle Physics 1 (1), 10–15. doi: 10.5923/j.jnpp.20110101.03.CrossRefGoogle Scholar
Salar Elahi, A., Ghoranneviss Emami, M. and Rahimi Rad, A. 2009 J. Fusion Energy 28 (4), 346–349. DOI:10.1007/s10894-009-9198-x.CrossRefGoogle Scholar
Strait, E. J.et al. 2006 Magnetic diagnostics. Fusion Sci. Technol. 53, 304–334.CrossRefGoogle Scholar
Taylor, R. J., Brown, M. L., Fried, B. D., Grote, H., Liberati, J. R., Morales, G. J., Pribyl, P., Darrow, D. and Ono, M. 1989 Phys. Rev. Lett. 63, 2365.CrossRefGoogle Scholar
Van Oost, G., Adamek, J. and Antoni, V. 2003 Plasma Phys. Controlled Fusion, 45 (5), pp. 621–643.CrossRefGoogle Scholar
Wesson, J. 1997 Tokamaks, Oxford: Clarendon.Google Scholar
Weynants, R. R. and Van Oost, G. 1993 Plasma Phys. Control. Fusion B 35, 177.CrossRefGoogle Scholar