Evolutions of limit cycle oscillation in L-I-H transitions on HL-2A

被引：1
|
作者：
Cheng, J. [1 ]
Dong, J. Q. [1 ,2 ]
Yan, L. W. [1 ]
Xu, Y. [1 ]
Huang, Z. H. [1 ]
Zhao, K. J. [1 ,3 ]
Ji, X. Q. [1 ]
Zhong, W. L. [1 ]
Yu, D. L. [1 ]
Nie, L. [4 ]
Song, X. M. [1 ]
Yang, Q. W. [1 ]
Ding, X. T. [1 ]
机构：
[1] Southwestern Inst Phys, Chengdu 610041, Sichuan, Peoples R China
[2] Zhejiang Univ, Inst Fus Theory & Simulat, Hangzhou 310027, Zhejiang, Peoples R China
[3] Natl Fus Res Inst, WCI Ctr Fus Theory, Taejon 305333, South Korea
[4] USTC, Dept Modern Phys, Hefei 230026, Peoples R China
来源：
JOURNAL OF NUCLEAR MATERIALS | 2015年 / 463卷
基金：
美国国家科学基金会;
关键词：
TOKAMAK; MODE; PLASMAS;
D O I：
10.1016/j.jnucmat.2014.12.068
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Poloidal symmetric low frequency oscillations at the plasma edge were observed during the low-intermediate-high transitions on the HL-2A tokamak. The limit cycle oscillation (LCO) frequency gradually reduces from 3.0 kHz to 1.5 kHz approaching the H mode. Meanwhile a transition of phase shift between the turbulence and the radial electric field was identified. In the initial phase, the turbulence grows first, followed by the localized electric field. In the later phase, the electric field leads turbulence, and the magnitude of the Reynolds stress gradient is out of phase with the LCO flow. The increasing magnitudes of the magnetic fluctuation may be correlated with the I-H transition. In addition, the divertor heat flux is also significantly modulated by the LCOs. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：455 / 458
页数：4
相关论文
共 50 条
  • [1] The effect of beta-induced Alfven eigenmode on L-I-H transitions in the HL-2A tokamak
    Yan, L. W.
    Cheng, J.
    Dong, J. Q.
    Itoh, K.
    Zhao, K. J.
    Huang, Z. H.
    Ji, X. Q.
    Yu, D. L.
    Nie, L.
    Jiang, M.
    Liu, C. H.
    Song, X. M.
    Yuan, B. S.
    Liu, Yi
    Yang, Q. W.
    Ding, X. T.
    Itoh, S. -I.
    Duan, X. R.
    Liu, Y.
    NUCLEAR FUSION, 2015, 55 (07)
  • [2] Fluctuation-induced inward particle flux during L-I-H transition on HL-2A tokamak
    Wu, J.
    Lan, T.
    Ding, W. X.
    Zhuang, G.
    Yu, C. X.
    Xu, M.
    Nie, L.
    Wu, J. R.
    Sheng, H. G.
    Chen, W.
    Yu, L. M.
    Cheng, J.
    Yan, L. W.
    Deng, T. J.
    Xu, H. Q.
    Zhu, J. F.
    Zhang, S.
    Mao, W. Z.
    Yu, Y.
    Sun, X.
    Liu, A. D.
    Xie, J. L.
    Li, H.
    Duan, X. R.
    Liu, W. D.
    NUCLEAR FUSION, 2021, 61 (06)
  • [3] Sawtooth-triggered limit-cycle oscillations and I-phase in the HL-2A tokamak
    Zhao, K. J.
    Cheng, J.
    Diamond, P. H.
    Dong, J. Q.
    Yan, L. W.
    Hong, W. Y.
    Xu, M.
    Tynan, G.
    Miki, K.
    Huang, Z. H.
    Itoh, K.
    Itoh, S-I
    Fujisawa, A.
    Nagashima, Y.
    Inagaki, S.
    Wang, Z. X.
    Wei, L.
    Song, X. M.
    Lei, G. J.
    Li, Q.
    Ji, X. Q.
    Liu, Yi
    Yang, Q. W.
    Ding, X. T.
    Duan, X. R.
    NUCLEAR FUSION, 2013, 53 (12)
  • [4] Limit cycle oscillations at the L-I-H transition in TJ-II plasmas: triggering, temporal ordering and radial propagation
    Estrada, T.
    Ascasibar, E.
    Blanco, E.
    Cappa, A.
    Castejon, F.
    Hidalgo, C.
    van Milligen, B. Ph.
    Sanchez, E.
    NUCLEAR FUSION, 2015, 55 (06)
  • [5] Direct observations of L-I-H and H-I-L transitions with the X-point reciprocating probe in ASDEX Upgrade
    Mueller, S. H.
    Conway, G. D.
    Birkenmeier, G.
    Carralero, D.
    Happel, T.
    Herrmann, A.
    Manz, P.
    de Marne, P.
    Mlynek, A.
    Mueller, H. W.
    Potzel, S.
    Rohde, V.
    Stroth, U.
    Tsalas, M.
    Tynan, G. R.
    Wolfrum, E.
    PHYSICS OF PLASMAS, 2014, 21 (04)
  • [6] Identifying L-H transition in HL-2A through deep learning
    He, Meihuizi
    Yang, Zongyu
    Liu, Songfen
    Xia, Fan
    Zhong, Wulyu
    PLASMA PHYSICS AND CONTROLLED FUSION, 2024, 66 (10)
  • [7] Study of Ideal Magnetohydrodynamic Operational β Limit of the HL-2A Tokamak
    Shen, Yong
    Dong, Jiaqi
    He, Hongda
    Li, Jia
    Wu, Na
    Zhao, Kaijun
    Deng, Wei
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2024, 93 (10)
  • [8] L-I-H transition dynamics in magnetically confined plasma
    Aungcharoen, T.
    Ruffolo, D.
    Klaywittaphat, P.
    Chatthong, B.
    19TH SIAM PHYSICS CONGRESS, 2025, 2934
  • [9] Zeff Measurement in Ohmic, L- and H-Mode Plasmas on HL-2A Tokamak
    Liu, L.
    Yu, D. L.
    Chen, W. J.
    Zhang, K.
    Li, D.
    He, X. F.
    He, X. X.
    Wei, Y. L.
    Zhang, N.
    Yang, Z. C.
    Yan, L. W.
    Shi, Z. B.
    Liu, Yi
    Yang, Q. W.
    IEEE TRANSACTIONS ON PLASMA SCIENCE, 2020, 48 (08) : 2790 - 2798
  • [10] Dynamics of low-intermediate-high-confinement transitions in the HL-2A tokamak
    Xu, Y.
    Cheng, J.
    Dong, J. Q.
    Dong, Y. B.
    Jiang, M.
    Zhong, W. L.
    Yan, L. W.
    Shi, Z. B.
    Huang, Z. H.
    Li, Y. G.
    Nie, L.
    Xu, M.
    Zhao, K. J.
    Ji, X. Q.
    Yu, D. L.
    Liu, Y.
    Cui, Z. Y.
    Chen, W.
    Yang, Q. W.
    Ding, X. T.
    Duan, X. R.
    Liu, Yong
    PLASMA PHYSICS AND CONTROLLED FUSION, 2015, 57 (01)
12345