Toroidal rotation induced by 4.6 GHz lower hybrid current drive on EAST tokamak

doi:10.1088/1674-1056/26/11/115203

Abstract

Using a tangentially viewing x-ray imaging crystal spectrometer, substantial co-current rotation driven by lower hybrid current drive (LHCD) at 4.6 GHz is observed on EAST tokamak. This study presents plasma rotation behaviors with 4.6 GHz LHCD injection. Typically, the 10-20 km/s co-current rotation change and the transport of rotation velocity from edge to core are observed. The relationship between plasma parameters and rotation is also investigated, indicating that rotation decreases with increasing internal inductance (l_i) and increases with increasing safety factor (q₀). Hysteresis between rotation and T_e plasma stored energy is observed, suggesting different response times between the electron heating and rotation acceleration by LHCD. A comparison between the rotations driven by 4.6 G LHCD and 2.45 G LHCD on EAST is also presented, in which higher frequency LHCD could induce more rotation changes.

Keywords: intrinsic rotation lower hybrid current drive (LHCD)

Received: 09 February 2017
Revised: 10 July 2017
Accepted manuscript online:

PACS:	52.30.-q	(Plasma dynamics and flow)
	52.35.Hr	(Electromagnetic waves (e.g., electron-cyclotron, Whistler, Bernstein, upper hybrid, lower hybrid))

Fund:

Project supported by the National Magnetic Confinement Fusion Science Program of China (Grant Nos. 2013GB112004 and 2015GB103002), the National Natural Science Foundation of China (Grant Nos. 11405212 and 11261140328), and the Major Program of Development Foundation of Hefei Center for Physical Science and Technology China (Grant No. 2016FXZY008).

Corresponding Authors: Bo Lyu
E-mail: blu@ipp.ac.cn

Cite this article:

Xiang-Hui Yin(尹相辉), Jun Chen(陈俊), Rui-Ji Hu(胡睿佶), Ying-Ying Li(李颖颖), Fu-Di Wang(王福地), Jia Fu(符佳), Bo-Jiang Ding(丁伯江), Mao Wang(王茂), Fu-Kun Liu(刘甫坤), Qing Zang(臧庆), Yue-Jiang Shi(石跃江), Bo Lyu(吕波), Bao-Nian Wan(万宝年), EAST team Toroidal rotation induced by 4.6 GHz lower hybrid current drive on EAST tokamak 2017 Chin. Phys. B 26 115203

[1]	Bondeson A and Ward D J 1994 Phys. Rev. Lett. 72 2709
[2]	Betti R and Freidberg J P 1995 Phys. Rev. Lett. 74 2949
[3]	Craddock G G and Diamond P H 1991 Phys. Rev. Lett. 67 1535
[4]	Terry P W 2000 Rev. Mod. Phys. 72 109
[5]	Doyle E J, Houlberg W A, Kamada Y, et al. 2007 Nucl. Fusion 47 S18-S127
[6]	Rice J E, Podpaly Y A, Reinke M L, et al. 2013 Nucl. Fusion 53 093015
[7]	Rice J E, Ince-Cushman A C, Bonoli P T, et al. 2009 Nucl. Fusion 49 025004
[8]	Ince-Cushman A, Rice J, Reinkeet M, et al. 2009 Phys. Rev. Lett. 102 035002
[9]	Koide Y, Tuda T, Ushigusa K, et al. 1992 Plasma Phys. Control. Nucl. Fusion Res. 1 777
[10]	Chouli B, Fenzi C, Garbet X, et al. 2014 Plasma Phys. Control. F 56 095018
[11]	Chouli B, Fenzi C, Garbet X, et al. 2015 Plasma Phys. Control. F 57 125007
[12]	Shi Y, Xu G, Wang F, et al. 2011 Phys. Rev. Lett. 106 235001
[13]	Gao Z, Fisch N J and Qin H 2011 Phys. Plasmas 18 082507
[14]	Wang S 2011 Phys. Plasmas 18 102502
[15]	Zuo Y, Wang S and Pan C 2012 Phys. Plasmas 19 102505
[16]	Wan B N, Li J G, Guo H Y, et al. 2013 Nucl. Fusion 53 104006
[17]	Wan B N, Li J G, Guo H Y, et al. 2015 Nucl. Fusion 55 104015
[18]	Li M H, Ding B J, Liu F K, et al. 2016 Phys. Plasmas 23 102512
[19]	Wang F D, Shi Y J, Zhang W, et al. 2011 J. Korean Phys. Soc. 59 2734
[20]	Lu B, Shi Y J, Wang F D, et al. 2013 Plasma Sci. Technol. 15 97
[21]	Lyu B, Wang F D, Pan X Y, et al. 2014 Rev. Sci. Instrum. 85 11E406
[22]	Shao C Q, Zhao J Y, Zang Q, et al. 2014 Plasma Sci. Technol. 16 721
[23]	Zang Q, Zhao J Y, Yang L, et al. 2010 Plasma Sci. Technol. 12 144
[24]	Zang Q, Zhao J Y, Yang L, et al. 2011 Rev. Sci. Instrum. 82 063502
[25]	Zhang R R, Xiao B J and Luo Z P 2014 Plasma Sci. Technol. 16 396

[1]	Optimized calculation of the synergy conditions between electron cyclotron current drive and lower hybrid current drive on EAST Wei Wei(韦维), Bo-Jiang Ding(丁伯江), Y Peysson, J Decker, Miao-Hui Li(李妙辉),Xin-Jun Zhang(张新军), Xiao-Jie Wang(王晓洁), Lei Zhang(张磊). Chin. Phys. B, 2016, 25(1): 015201.

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Toroidal rotation induced by 4.6 GHz lower hybrid current drive on EAST tokamak

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