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作者:X.T. Ding , W.L. Zhong ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (8)IOP
摘要:A class of evident MHD activities prior to major disruption has been observed during recent radiation induced disruptions of the HL-2A tokamak discharges. It can be named SOD, synchronous oscillations prior to disruption, characterized by synchronous oscillation of electron cyclo...
作者:X.T. Ding , J.Q. Dong ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:The oscillations of poloidal plasma flows induced by radially sheared zonal flows are investigated by newly developed correlation Doppler reflectometers in the HL-2A tokamak. The non-disturbing diagnostic allows one to routinely measure the rotation velocity of turbulence, and he...
作者:X.T. Ding , L.W. Yan ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:Self-organized criticality (SOC) dynamics have been investigated in non-local transport regimes induced by the supersonic molecular beam injection in the HL-2A tokamak. Experimental evidence shows that the SOC or avalanche behaviors, such as the Hurst parameter, self-similarity a...
作者:X.T. Ding , G.L. Yuan ...
来源:[J].Nuclear Fusion(IF 2.734), 2015, Vol.55 (11)IOP
摘要:Characteristics of fast-ion losses induced by various magnetohydrodynamic (MHD) instabilities, such as tearing mode (TM), long-lived mode (LLM), and sawtooth crash, have been observed and experimentally investigated in the HL-2A tokamak. To study fast-ion losses, a new scintillat...
作者:X.T. Ding , H.S. Xie ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (3)IOP
摘要:Recent experimental results that are associated with the core-localized (i.e. normalized radius ) Alfvénic modes in HL-2A neutral beam injection (NBI) plasmas with weak magnetic shears are reported. In the different plasma parameter regions, the energetic ions produced by th...
作者:X.T. Ding , Z.B. Shi ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (4)IOP
摘要:Understanding of nonlocal electron heat transport is of key importance for current magnetic confinement fusion research. Global nonlocal response presents a fundamental challenge to the standard anomalous transport model based on local microinstabilities and turbulence. Here, we ...
作者:X.T. Ding , J.Q. Dong ...
来源:[J].Nuclear Fusion(IF 2.734), 2016, Vol.56 (12)IOP
摘要:Edge localized mode (ELM) is successfully mitigated by helium and deuterium supersonic molecular beam injections (SMBIs) on HL-2A. During the ELM mitigation by SMBIs, gradients of ion temperature ( T i) and electron density are softened in the pedestal. It has bee...
作者:X.T. Ding , Y.G. Li ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (3)IOP
摘要:Strong resonant and non-resonant internal kink modes (abbreviated as RKs and NRKs, respectively), which are also called resonant and non-resonant fishbones, are observed on HL-2A tokamak with high-power ECRH + ECCD (or ECRH) and ECRH + ECCD+, respectiv...
作者:X.T. Ding , X.R. Duan
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (7)IOP
摘要:New mesoscale electric fluctuations (MSEFs) are identified in the edge plasmas of the HL-2A tokamak using multiple Langmuir probe arrays. The MSEFs, resulting from the synchronization and having components of dominant geodesic acoustic mode (GAM) and m / n = 6/2 potential fluctua...
作者:X.T. Ding , Z.B. Shi ...
来源:[J].Nuclear Fusion(IF 2.734), 2017, Vol.57 (11)IOP
摘要:Multi-scale interactions have been observed recently in the HL-2A core NBI plasmas, including the synchronous coupling between kink mode and tearing mode, nonlinear couplings of TAE/BAE and TM near surface, AITG/KBM/BAE and kink mode near surface, and between kink mode and...

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