Observation and characterization of the effect of electron cyclotron waves on toroidal rotation in EAST L-mode discharges

Jun CHEN (陈俊); Ruiji HU (胡睿佶); Bo LYU (吕波); Fudi WANG (王福地); Xiaojie WANG (王晓洁); Handong XU (徐旵东); Yingying LI (李颖颖); Jia FU (符佳); Xianghui YIN (尹相辉); Dajun WU (吴大俊); Fukun LIU (刘甫坤); Qing ZANG (臧庆); Haiqing LIU (刘海庆); Yuejiang SHI (石跃江); Shifeng MAO (毛世峰); Yi YU (余羿); Baonian WAN (万宝年); Minyou YE (叶民友); Yongcai SHEN (沈永才); EAST team

doi:10.1088/2058-6272/aa7cec

Plasma Science and Technology > 2017 > 19(10): 105101. > DOI: 10.1088/2058-6272/aa7cec

Jun CHEN (陈俊), Ruiji HU (胡睿佶), Bo LYU (吕波), Fudi WANG (王福地), Xiaojie WANG (王晓洁), Handong XU (徐旵东), Yingying LI (李颖颖), Jia FU (符佳), Xianghui YIN (尹相辉), Dajun WU (吴大俊), Fukun LIU (刘甫坤), Qing ZANG (臧庆), Haiqing LIU (刘海庆), Yuejiang SHI (石跃江), Shifeng MAO (毛世峰), Yi YU (余羿), Baonian WAN (万宝年), Minyou YE (叶民友), Yongcai SHEN (沈永才), EAST team. Observation and characterization of the effect of electron cyclotron waves on toroidal rotation in EAST L-mode discharges[J]. Plasma Science and Technology, 2017, 19(10): 105101. DOI: 10.1088/2058-6272/aa7cec

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Observation and characterization of the effect of electron cyclotron waves on toroidal rotation in EAST L-mode discharges

1 School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, People’s Republic of China 2 Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 3 Department of Nuclear Engineering, Seoul National University, Seoul 151-742, Korea 4 School of Physics and Electrical Engineering of Anqing Normal University, Anqing 246011, People’s Republic of China

Funds: This work is supported by the National Magnetic Confinement Fusion Science Program of China (2013GB112004, 2015GB103002), National Natural Science Foundation of China (11305212, 11405212), the Major Program of Development Foundation of Hefei Center for Physical Science and Technology (2016FXZY008) and the Natural Science Research Key Project of the Education Department of Anhui Province under grant No. KJ2016A434.

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Received Date: May 24, 2017

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Abstract

Abstract

The change in the toroidal rotation of plasma caused by electron cyclotron wave (ECW) injection has been observed in EAST. It is found that the response of the rotation is similar for all possible ECW toroidal injection angles. The core toroidal rotation velocity increases in the co-current direction along with a rise in the plasma temperature and stored energy. The profile of the electron temperature, ion temperature and toroidal rotation velocity gradually become peaked. The change in toroidal rotation in the core increases with the ECW injection power. Different behavior is observed when the ECWs are injected into low hybrid current drive (LHCD) target plasmas, where the electron temperature and rotation profile become peaked, while the ion temperature profile flattens after ECW injection, suggesting different transport characteristics in energy and momentum.
- ECW,
- plasma toroidal rotation,
- LHCD,
- x-ray crystal spectrometer

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References (24)

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