First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak

G.S. Xu; H. Q. Wang; B. N. Wan; H. Y. Guo; Volker Naulin; P. H. Diamond; G. R. Tynan; M. Xu; Ning Yan; W. Zhang; J. F. Chang; L. Wang; R. Chen; S. C. Liu; S. Y. Ding; L. M. Shao; H. Xiong; H. L. Zhao

doi:10.1063/1.4769852

First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak

G.S. Xu
, H. Q. Wang
, B. N. Wan
, H. Y. Guo
, Volker Naulin
, P. H. Diamond
, G. R. Tynan
, M. Xu
, Ning Yan
, W. Zhang
, J. F. Chang
, L. Wang
, R. Chen
, S. C. Liu
, S. Y. Ding
, L. M. Shao
, H. Xiong
, H. L. Zhao

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

A new turbulence-flow cycle state has been discovered after the formation of a transport barrier in the H-mode plasma edge during a quiescent phase on the EAST superconducting tokamak. Zonal-flow modulation of high-frequency-broadband (0.05-1MHz) turbulence was observed in the steep-gradient region leading to intermittent transport events across the edge transport barrier. Good confinement (H-98y,H-2 similar to 1) has been achieved in this state, even with input heating power near the L-H transition threshold. A novel model based on predator-prey interaction between turbulence and zonal flows reproduced this state well. © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769852]

Original language	English
Journal	Physics of Plasmas
Volume	19
Issue number	12
Pages (from-to)	122502
Number of pages	5
ISSN	1070-664X
DOIs	https://doi.org/10.1063/1.4769852
Publication status	Published - 2012

Keywords

PHYSICS,
TURBULENCE
PLASMA

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10.1063/1.4769852

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Xu, G. S., Wang, H. Q., Wan, B. N., Guo, H. Y., Naulin, V., Diamond, P. H., Tynan, G. R., Xu, M., Yan, N., Zhang, W., Chang, J. F., Wang, L., Chen, R., Liu, S. C., Ding, S. Y., Shao, L. M., Xiong, H., & Zhao, H. L. (2012). First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak. Physics of Plasmas, 19(12), 122502. https://doi.org/10.1063/1.4769852

@article{ad942dcb0836448ca004f986917ce71d,

title = "First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak",

abstract = "A new turbulence-flow cycle state has been discovered after the formation of a transport barrier in the H-mode plasma edge during a quiescent phase on the EAST superconducting tokamak. Zonal-flow modulation of high-frequency-broadband (0.05-1MHz) turbulence was observed in the steep-gradient region leading to intermittent transport events across the edge transport barrier. Good confinement (H-98y,H-2 similar to 1) has been achieved in this state, even with input heating power near the L-H transition threshold. A novel model based on predator-prey interaction between turbulence and zonal flows reproduced this state well. {\textcopyright} 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769852]",

keywords = "PHYSICS,, TURBULENCE, PLASMA",

author = "G.S. Xu and Wang, \{H. Q.\} and Wan, \{B. N.\} and Guo, \{H. Y.\} and Volker Naulin and Diamond, \{P. H.\} and Tynan, \{G. R.\} and M. Xu and Ning Yan and W. Zhang and Chang, \{J. F.\} and L. Wang and R. Chen and Liu, \{S. C.\} and Ding, \{S. Y.\} and Shao, \{L. M.\} and H. Xiong and Zhao, \{H. L.\}",

year = "2012",

doi = "10.1063/1.4769852",

language = "English",

volume = "19",

pages = "122502",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "12",

}

Xu, GS, Wang, HQ, Wan, BN, Guo, HY, Naulin, V, Diamond, PH, Tynan, GR, Xu, M, Yan, N, Zhang, W, Chang, JF, Wang, L, Chen, R, Liu, SC, Ding, SY, Shao, LM, Xiong, H & Zhao, HL 2012, 'First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak', Physics of Plasmas, vol. 19, no. 12, pp. 122502. https://doi.org/10.1063/1.4769852

TY - JOUR

T1 - First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak

AU - Xu, G.S.

AU - Wang, H. Q.

AU - Wan, B. N.

AU - Guo, H. Y.

AU - Naulin, Volker

AU - Diamond, P. H.

AU - Tynan, G. R.

AU - Xu, M.

AU - Yan, Ning

AU - Zhang, W.

AU - Chang, J. F.

AU - Wang, L.

AU - Chen, R.

AU - Liu, S. C.

AU - Ding, S. Y.

AU - Shao, L. M.

AU - Xiong, H.

AU - Zhao, H. L.

PY - 2012

Y1 - 2012

N2 - A new turbulence-flow cycle state has been discovered after the formation of a transport barrier in the H-mode plasma edge during a quiescent phase on the EAST superconducting tokamak. Zonal-flow modulation of high-frequency-broadband (0.05-1MHz) turbulence was observed in the steep-gradient region leading to intermittent transport events across the edge transport barrier. Good confinement (H-98y,H-2 similar to 1) has been achieved in this state, even with input heating power near the L-H transition threshold. A novel model based on predator-prey interaction between turbulence and zonal flows reproduced this state well. © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769852]

AB - A new turbulence-flow cycle state has been discovered after the formation of a transport barrier in the H-mode plasma edge during a quiescent phase on the EAST superconducting tokamak. Zonal-flow modulation of high-frequency-broadband (0.05-1MHz) turbulence was observed in the steep-gradient region leading to intermittent transport events across the edge transport barrier. Good confinement (H-98y,H-2 similar to 1) has been achieved in this state, even with input heating power near the L-H transition threshold. A novel model based on predator-prey interaction between turbulence and zonal flows reproduced this state well. © 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4769852]

KW - PHYSICS,

KW - TURBULENCE

KW - PLASMA

U2 - 10.1063/1.4769852

DO - 10.1063/1.4769852

M3 - Journal article

SN - 1070-664X

VL - 19

SP - 122502

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 12

ER -

First observation of a new zonal-flow cycle state in the H-mode transport barrier of the experimental advanced superconducting Tokamak

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