Advanced Search+
Hailin ZHAO (赵海林), Tao LAN (兰涛), Adi LIU (刘阿娣), Defeng KONG (孔德峰), Huagang SHEN (沈华刚), Jie WU (吴捷), Wandong LIU (刘万东), Changxuan YU (俞昌旋), Wei ZHANG (张炜), Guosheng XU (徐国盛), Baonian WAN (万宝年). Zonal flow energy ratio evolution during L-H and H-L transitions in EAST plasmas[J]. Plasma Science and Technology, 2017, 19(3): 35101-035101. DOI: 10.1088/2058-6272/19/3/035101
Citation: Hailin ZHAO (赵海林), Tao LAN (兰涛), Adi LIU (刘阿娣), Defeng KONG (孔德峰), Huagang SHEN (沈华刚), Jie WU (吴捷), Wandong LIU (刘万东), Changxuan YU (俞昌旋), Wei ZHANG (张炜), Guosheng XU (徐国盛), Baonian WAN (万宝年). Zonal flow energy ratio evolution during L-H and H-L transitions in EAST plasmas[J]. Plasma Science and Technology, 2017, 19(3): 35101-035101. DOI: 10.1088/2058-6272/19/3/035101

Zonal flow energy ratio evolution during L-H and H-L transitions in EAST plasmas

Funds: This work was supported by the National Natural Science Foundation of China with Grant Nos. 10990210, 10990211, 11375188, 11105144, and 11375053, the National Magnetic Confinement Fusion Science Program of China under Contracts Nos. 2013GB106002, 2013GB106003, and the Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology with Grant No. 2014FXCX003).
More Information
  • Received Date: July 28, 2016
  • The essential role of zonal flow in the L-H transition and the suppression of turbulence have been studied with a long range correlation technique using Langmuir probe arrays in EAST tokamak. Two toroidally localized probe arrays are used to measure the zonal flow during L-H transition and H-L back transition. The energy ratio of the low frequency zonal flow to the total drift wave turbulence is calculated. During ELM-free H mode, the energy ratio is higher than that in L mode, which reveals the important role of zonal flows in regulating turbulence amplitude in L-H transition.
  • [1]
    Wagner F et al 1984 Phys. Rev. Lett. 53 1453
    [2]
    Shimada M et al 2007 Nucl. Fusion 47 S1
    [3]
    Wagner F 2007 Plasma Phys. Control. Fusion 49 B1
    [4]
    Miki K et al 2012 Phys. Plasmas 19 092306
    [5]
    Groebner R J, Burrell K H and Seraydarian R P 1990 Phys. Rev. Lett. 64 3015
    [6]
    Ida K et al 1990 Phys. Rev. Lett. 65 1364
    [7]
    Diamond P H et al 2005 Plasma Phys. Control. Fusion 47 R35
    [8]
    Fujisawa A 2009 Nucl. Fusion 49 013001
    [9]
    Fujisawa A et al 2004 Phys. Rev. Lett. 93 165002
    [10]
    Moyer R A et al 2001 Phys. Rev. Lett. 87 135001
    [11]
    Jakubowski M, Fonck R J and McKee G R 2002 Phys. Rev. Lett. 89 265003
    [12]
    McKee G R et al 2003 Plasma Phys. Control. Fusion 45 A477
    [13]
    Nagashima Y et al 2005 Phys. Rev. Lett. 95 095002
    [14]
    Nagashima Y et al 2006 Plasma Phys. Control. Fusion 48 A377
    [15]
    Conway G D et al 2005 Plasma Phys. Control. Fusion 47 1165
    [16]
    Zhao K J et al 2006 Phys. Rev. Lett. 96 255004
    [17]
    Lan T et al 2008 Plasma Phys. Control. Fusion 50 045002
    [18]
    Lan T et al 2008 Phys. Plasmas 15 056105
    [19]
    Liu A D et al 2009 Phys. Rev. Lett. 103 095002
    [20]
    Hailin Z et al 2010 Plasma Sci. Technol. 12 262
    [21]
    Kramer F A et al 2006 Phys. Rev. Lett. 97 045006
    [22]
    Kong D F et al 2013 Nucl. Fusion 53 113008
    [23]
    Kong D F et al 2013 Nucl. Fusion 53 123006
    [24]
    Schmitz L et al 2008 Rev. Sci. Instrum. 79 10F113
    [25]
    Miki K et al 2013 Phys. Plasmas 20 062304
    [26]
    Kim E J and Diamond P H 2003 Phys. Rev. Lett. 90 185006
    [27]
    Diamond P H et al 2004 Physics of Zonal Flows 20th IAEA Fusion Energy Conf. (Vilamoura, Portugal, 1 November 2004) IAEA /CN-116/OV/2-1
    [28]
    Zhang W, Chang J F and Wan B N 2010 Rev. Sci. Instrum. 81 113501
    [29]
    Beall J M, Kim Y C and Powers E J 1982 J. Appl. Phys. 53 3933
    [30]
    Scott B D 2005 New J. Phys. 7 92
    [31]
    Kagan G and Catto P J 2008 Phys. Plasmas 16 056105
    [32]
    Rosenbluth M N and Hinton F L 1998 Phys. Rev. Lett. 80 724
  • Related Articles

    [1]Weijie HUO, Weiguo HE, Luofeng HAN, Kangwu ZHU, Feng WANG. A study of pulsed high voltage driven hollow-cathode electron beam sources through synchronous optical trigger[J]. Plasma Science and Technology, 2024, 26(5): 055501. DOI: 10.1088/2058-6272/ad113e
    [2]Chunxia LIANG (梁春霞), Ning WANG (王宁), Zhengchao DUAN (段正超), Feng HE (何锋), Jiting OUYANG (欧阳吉庭). Experimental investigations of enhanced glow based on a pulsed hollow-cathode discharge[J]. Plasma Science and Technology, 2019, 21(2): 25401-025401. DOI: 10.1088/2058-6272/aaef49
    [3]He GUO (郭贺), Xiaomei YAO (姚晓妹), Jie LI (李杰), Nan JIANG (姜楠), Yan WU (吴彦). Exploration of a MgO cathode for improving the intensity of pulsed discharge plasma at atmosphere[J]. Plasma Science and Technology, 2018, 20(10): 105404. DOI: 10.1088/2058-6272/aace9e
    [4]Shoujie HE (何寿杰), Peng WANG (王鹏), Jing HA (哈静), Baoming ZHANG (张宝铭), Zhao ZHANG (张钊), Qing LI (李庆). Effects of discharge parameters on the micro-hollow cathode sustained glow discharge[J]. Plasma Science and Technology, 2018, 20(5): 54006-054006. DOI: 10.1088/2058-6272/aab54b
    [5]Mingming SUN (孙明明), Tianping ZHANG (张天平), Xiaodong WEN (温晓东), Weilong GUO (郭伟龙), Jiayao SONG (宋嘉尧). Plasma characteristics in the discharge region of a 20A emission current hollow cathode[J]. Plasma Science and Technology, 2018, 20(2): 25503-025503. DOI: 10.1088/2058-6272/aa8edb
    [6]CHEN Yuqian (陈俞钱), HU Chundong (胡纯栋), XIE Yahong (谢亚红). Analysis of Effects of the Arc Voltage on Arc Discharges in a Cathode Ion Source of Neutral Beam Injector[J]. Plasma Science and Technology, 2016, 18(4): 453-456. DOI: 10.1088/1009-0630/18/4/21
    [7]S. CORNISH, J. KHACHAN. The Use of an Electron Microchannel as a Self-Extracting and Focusing Plasma Cathode Electron Gun[J]. Plasma Science and Technology, 2016, 18(2): 138-142. DOI: 10.1088/1009-0630/18/2/07
    [8]HAN Qing (韩卿), WANG Jing (王敬), ZHANG Lianzhu (张连珠). PIC/MCC Simulation of Radio Frequency Hollow Cathode Discharge in Nitrogen[J]. Plasma Science and Technology, 2016, 18(1): 72-78. DOI: 10.1088/1009-0630/18/1/13
    [9]LI Shichao(李世超), HE Feng(何锋), GUO Qi(郭琦), OUYANG Jiting(欧阳吉庭). Deposition of Diamond-Like Carbon on Inner Surface by Hollow Cathode Discharge[J]. Plasma Science and Technology, 2014, 16(1): 63-67. DOI: 10.1088/1009-0630/16/1/14
    [10]D. FUKUHARA, S. NAMBA, K. KOZUE, T. YAMASAKI, K. TAKIYAMA. Characterization of a Microhollow Cathode Discharge Plasma in Helium or Air with Water Vapor[J]. Plasma Science and Technology, 2013, 15(2): 129-132. DOI: 10.1088/1009-0630/15/2/10

Catalog

    Article views (346) PDF downloads (764) Cited by()

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return