- Duan, XR
- Ding, XT
- Dong, JQ
- Yan, LW
- Liu, Y
- Huang, Y
- Song, XM
- Zou, XL
- Xu, M
- Yang, QW
- Liu, DQ
- Rao, J
- Xuan, WM
- Chen, LY
- Mao, WC
- Wang, QM
- Cao, Z
- Li, B
- Cao, JY
- Lei, GJ
- Zhang, JH
- Li, XD
- Chen, W
- Zhao, KJ
- Xiao, WW
- Chen, CY
- Kong, DF
- Isobe, M
- Morita, S
- Cheng, J
- Chen, SY
- Cui, CH
- Cui, ZY
- Deng, W
- Dong, YB
- Feng, BB
- Hong, WY
- Huang, M
- Ji, XQ
- Li, GS
- Li, HJ
- Li, Q
- Liu, CH
- Peng, JF
- Shi, BZ
- Wang, YQ
- Yao, LH
- Yao, LY
- Yu, DL
- Yu, LM
- Yuan, BS
- Zhou, J
- Zhou, Y
- Zhong, WL
- Tynan, G
- Diamond, P
- Yu, CX
- Liu, Y
- et al.
For the first time supersonic molecular beam injection (SMBI) and cluster jet injection (CJI) were applied to mitigate edge-localized modes (ELMs) in HL-2A successfully. The ELM frequency increased by a factor of 2-3 and the heat flux on the divertor target plates decreased by 50% on average after SMBI or CJI. Energetic particle induced modes were observed in different frequency ranges with high-power electron cyclotron resonance heating (ECRH). The high frequency (200-350 kHz) of the modes with a relatively small amplitude was close to the gap frequency of the toroidicity-induced Alfvén eigenmode. The coexistent multi-mode magnetic structures in the high-temperature and low-collision plasma could affect the plasma transport dramatically. Long-lived saturated ideal magnetohydrodynamic instabilities during strong neutral beam injection heating could be suppressed by high-power ECRH. The absolute rate of nonlinear energy transfer between turbulence and zonal flows was measured and the secondary mode competition between low-frequency (LF) zonal flows (ZFs) and geodesic acoustic modes (GAMs) was identified, which demonstrated that ZFs played an important role in the L-H transition. The spontaneously generated E × B shear flow was identified to be responsible for the generation of a large-scale coherent structure (LSCS), which provided unambiguous experimental evidence for the LSCS generation mechanism. New meso-scale electric potential fluctuations (MSEFs) at frequency f ∼ 10.5 kHz with two components of n = 0 and m/n = 6/2 were also identified in the edge plasmas for the first time. The MSEFs coexisted and interacted with magnetic islands of m/n = 6/2, turbulence and LF ZFs. © 2013 IAEA, Vienna.