Active control of internal transport barrier formation due to off-axis electron-cyclotron heating in GAMMA 10 experiments

Cho, T.; Pastukhov, V. P.; Horton, W.; Numakura, T.; Hirata, M.; Kohagura, J.; Chudin, N. V.; Pratt, J.
May 2008
Physics of Plasmas;May2008, Vol. 15 Issue 5, p056120
Academic Journal
The controlled formation of an internal transport barrier (ITB) is observed in GAMMA 10 [T. Cho et al., Nucl. Fusion 45, 1650 (2005)]. The barrier is localized within a layer of a strongly sheared Er×B plasma rotation (5.5


Related Articles

  • On the scaling of avaloids and turbulence with the average density approaching the density limit. Antar, G. Y.; Counsell, G.; Ahn, J.-W. // Physics of Plasmas;Aug2005, Vol. 12 Issue 8, p082503 

    This article is dedicated to the characterization of turbulent transport in the scrape-off layer of the Mega Ampère Spherical Tokamak [A. Sykes et al., Phys. Plasmas 8, 2101 (2001)] as a function of the average density (nL). The aim is to answer a renewed interest in this subject since the...

  • Dynamical alignment in three species tokamak edge turbulence. Scott, Bruce D. // Physics of Plasmas;Aug2005, Vol. 12 Issue 8, p082305 

    Three-dimensional computations of self-consistent three species gyrofluid turbulence are carried out for tokamak edge conditions. Profiles as well as disturbances in dependent variables are followed, running the dynamical system to transport equilibrium. The third species density shows a...

  • Plasma density behavior with new graphite limiters in the Hefei Tokamak-7. Asif, M.; Gao, X.; Li, J.; Kuang, G. L.; Wan, B. N.; Jie, Y. X.; Zhao, J. Y.; Zhang, X. D.; Liu, H. Q.; Tong, X. D.; Liu, J.; Xu, Q.; Hu, J. S.; Yang, Y.; Shen, B.; Mao, J. S.; Hu, L. Q.; Wu, Z. W.; Ling, B. L. // Physics of Plasmas;Aug2005, Vol. 12 Issue 8, p082502 

    A new set of actively cooled toroidal double-ring graphite limiters has been developed in the Hefei Tokamak-7 (HT-7) [X. Gao et al., Phys. Plasmas 7, 2933 (2000)] for long pulse operation. The extension of operational region and density behavior with graphite (C) limiters have been studied in...

  • Curvature particle pinch in tokamak and stellarator geometry. Mishchenko, Alexey; Helander, Per; Turkin, Yuriy // Physics of Plasmas;Oct2007, Vol. 14 Issue 10, p102308 

    A study of the curvature pinch effect in various fusion devices (both tokamaks and stellarators) is presented. Canonical density profiles are calculated employing the theory developed by M. B. Isichenko, A. V. Gruzinov, P. H. Diamond, and P. N. Yushmanov [Phys. Plasmas 3, 1916 (1995)]. In...

  • Role of trapped electron mode turbulence in internal transport barrier control in the Alcator C-Mod Tokamak. Ernst, D. R.; Bonoli, P. T.; Catto, P. J.; Doriand, W.; Fiore, C. L.; Granetz, R. S.; Greenwald, M.; Hubbard, A. E.; Porkolab, M.; Redi, M. H.; Rice, J. E.; Zhurovich, K. // Physics of Plasmas;May2004, Vol. 11 Issue 5, p2637 

    Nonlinear gyrokinetic simulations of trapped electron mode (TEM) turbulence, within an internal particle transport barrier, are performed and compared with experimental data. The results provide a mechanism for transport barrier control with on-axis radio frequency heating, as demonstrated in...

  • Edge and scrape-off layer tokamak plasma turbulence simulation using two-field fluid model. Bisai, Nirmal; Das, Amita; Deshpande, Shishir; Jha, Ratneshwar; Kaw, Predhiman; Sen, Abhijit; Singh, Raghvendra // Physics of Plasmas;Jul2005, Vol. 12 Issue 7, p072520 

    A novel two-dimensional (2D) fluid model is proposed for investigating flux-driven plasma turbulence in the tokamak edge and scrape-off layer (SOL). Unlike most previous turbulence simulations of this region, the 2D model treats the two regions in a consolidated manner with a smooth transition...

  • Turbulence Induced Transport in Tokamaks. Caldas, I. L.; Marcus, F. A.; Batista, A. M.; Viana, R. L.; Lopes, S. R.; Heller, M. V. A. P.; Guimarães-Filho, Z. O.; Morrison, P. J.; Horton, W. // AIP Conference Proceedings;2006, Vol. 875 Issue 1, p341 

    This report is concerned with plasma edge turbulence and its relation to anomalous particle transport in tokamaks. First, experimental evidence of turbulence driven particle transport and measurements of the gradients of the equilibrium profiles in the Brazilian tokamaks TBR and TCABR are...

  • Repetitive transport bursts in simulations of edge-localized modes in tokamaks. Kleva, Robert G.; Guzdar, Parvez N. // Physics of Plasmas;Jul2006, Vol. 13 Issue 7, p072509 

    The character of particle and energy transport in simulations of tokamak edge turbulence is determined by the magnitude of the density gradient. Edge turbulence becomes increasingly intermittent as the edge density gradient increases. Beyond a critical limit in the edge density gradient, the...

  • Parameters of turbulent structures at the periphery of the FT-2 tokamak. Shatalin, S.; Vekshina, E.; Vicente, J.; Vazhnov, P.; Esipov, L.; Lashkul, S.; Sidorov, A. // Plasma Physics Reports;May2011, Vol. 37 Issue 5, p371 

    Results are presented from probe measurements carried out in the scrape-off layer of the FT-2 tokamak in the course of additional lower hybrid heating, during which an L-H transition was observed. The objective of this study was to obtain information on the parameters of blobs-turbulent...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics