Geodesic acoustic mode investigation in the spherical Globus-M tokamak using multi-diagnostic approach

被引：28
作者：
Bulanin, V. V. [1 ]
Gusev, V. K. [2 ]
Iblyaminova, A. D. [2 ]
Khromov, N. A. [2 ]
Kurskiev, G. S. [2 ]
Minaev, V. B. [2 ]
Patrov, M. I. [2 ]
Petrov, A. V. [1 ]
Petrov, Yu. V. [2 ]
Sakharov, N. V. [2 ]
Shchegolev, P. B. [2 ]
Tolstyakov, S. Yu. [2 ]
Varfolomeev, V. I. [2 ]
Wagner, F. [3 ]
Yashin, Yu. [1 ]
机构：
[1] Peter Great St Petersburg Polytech Univ, St Petersburg, Russia
[2] RAS, Ioffe Inst, St Petersburg, Russia
[3] Max Planck Inst Plasma Phys, Greifswald, Germany
来源：
NUCLEAR FUSION | 2016年 / 56卷 / 01期
关键词：
geodesic acoustic mode; multi-diagnostic approach; spherical tokamak; zonal flow; doppler reflectometry; limit cycle oscillations; ZONAL FLOWS; DOPPLER REFLECTOMETRY; BISPECTRAL ANALYSIS; PLASMA; OSCILLATIONS; FLUCTUATION; TRANSITIONS; RANGE;
D O I：
10.1088/0029-5515/56/1/016017
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The results of a multi-diagnostic approach for geodesic acoustic mode (GAM) studies in the spherical torus Globus-M are presented. The GAM oscillations of radial electric field, plasma density and magnetic field were simultaneously observed. The spatial structures of crucial plasma parameters are exhibited and discussed. The intermittent character of the GAM manifests itself as a modulation at two time-scales: equilibrium time scale and the characteristic time for limit-cycle oscillations. The mutual influence of GAM oscillations and turbulence is demonstrated by bicoherence analysis.
引用
收藏
页数：8
相关论文
共 47 条
  • [1] Observation of geodesic acoustic modes in the Globus-M spherical Tokamak
    Bulanin, V. V.
    Wagner, F.
    Varfolomeev, V. I.
    Gusev, V. K.
    Kurskiev, G. S.
    Minaev, V. B.
    Patrov, M. I.
    Petrov, A. V.
    Petrov, Yu V.
    Prisyazhnyuk, D. V.
    Sakharov, N. V.
    Tolstyakov, S. Yu
    Khromov, N. A.
    Shchegolev, P. B.
    Yashin, A. Yu
    [J]. TECHNICAL PHYSICS LETTERS, 2014, 40 (05) : 375 - 377
  • [2] Observation of filaments on the globus-M tokamak by Doppler reflectometry
    Bulanin, V. V.
    Varfolomeev, V. I.
    Gusev, V. K.
    Ivanov, A. E.
    Krikunov, S. V.
    Kurskiev, G. S.
    Larionov, M. M.
    Minaev, V. B.
    Patrov, M. I.
    Petrov, A. V.
    Petrov, Yu. V.
    Sakharov, N. V.
    Tolstyakov, S. Yu.
    Khromov, N. A.
    Yashin, A. Yu.
    [J]. TECHNICAL PHYSICS LETTERS, 2011, 37 (04) : 340 - 343
  • [3] Dynamics of Low-Intermediate-High-Confinement Transitions in Toroidal Plasmas
    Cheng, J.
    Dong, J. Q.
    Itoh, K.
    Yan, L. W.
    Xu, M.
    Zhao, K. J.
    Hong, W. Y.
    Huang, Z. H.
    Ji, X. Q.
    Zhong, W. L.
    Yu, D. L.
    Itoh, S. -I.
    Nie, L.
    Kong, D. F.
    Lan, T.
    Liu, A. D.
    Zou, X. L.
    Yang, Q. W.
    Ding, X. T.
    Duan, X. R.
    Liu, Yong
    [J]. PHYSICAL REVIEW LETTERS, 2013, 110 (26)
  • [4] Mean and Oscillating Plasma Flows and Turbulence Interactions across the L-H Confinement Transition
    Conway, G. D.
    Angioni, C.
    Ryter, F.
    Sauter, P.
    Vicente, J.
    [J]. PHYSICAL REVIEW LETTERS, 2011, 106 (06)
  • [5] Frequency scaling and localization of geodesic acoustic modes in ASDEX Upgrade
    Conway, G. D.
    Troester, C.
    Scott, B.
    Hallatschek, K.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2008, 50 (05)
  • [6] Direct measurement of zonal flows and geodesic acoustic mode oscillations in ASDEX Upgrade using Doppler reflectometry
    Conway, GD
    Scott, B
    Schirmer, J
    Reich, M
    Kendl, A
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 (08) : 1165 - 1185
  • [7] Plasma rotation profile measurements using Doppler reflectometry
    Conway, GD
    Schirmer, J
    Klenge, S
    Suttrop, W
    Hozhauer, E
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2004, 46 (06) : 951 - 970
  • [8] Complete multi-field characterization of the geodesic acoustic mode in the TCV tokamak
    de Meijere, C. A.
    Coda, S.
    Huang, Z.
    Vermare, L.
    Vernay, T.
    Vuille, V.
    Brunner, S.
    Dominski, J.
    Hennequin, P.
    Kraemer-Flecken, A.
    Merlo, G.
    Porte, L.
    Villard, L.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2014, 56 (07)
  • [9] Zonal flows in plasma - a review
    Diamond, PH
    Itoh, SI
    Itoh, K
    Hahm, TS
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2005, 47 (05) : R35 - R161
  • [10] Experimental observation of coupling between turbulence and sheared flows during L-H transitions in a toroidal plasma
    Estrada, T.
    Happel, T.
    Hidalgo, C.
    Ascasibar, E.
    Blanco, E.
    [J]. EPL, 2010, 92 (03)
12345