Experiment study of edge localized mode with plasma vertical jogging in HL-2A tokamak

Experiment study of edge localized mode with plasma vertical jogging in HL-2A tokamak
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HL-2A托卡马克等离子体垂直微动边缘局域模式实验研究

DOI:
10.1063/1.4998471
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发表时间:
2017-08
期刊:
影响因子:
2.2
通讯作者:
Jiang M.
Jiang M.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wu N.;Chen S. Y.;Song X. M.;Mou M. L.;Huang J.;Wang Z. T.;Tang C. J.;Song X.;Xia F.;Jiang M.

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在HL-2A装置上研究了等离子体垂直抖动对边缘局域模的影响。在实验过程中,进行了周期约为75 ms的等离子体微动,结果表明,等离子体向上移动时,ELM幅度和周期均减小,并用考虑了电阻率效应的剥离-气球模式理论对此进行了定性的模拟。等离子体的向上运动引起基座参数的变化,然后在电阻率和抗磁的影响下,主环向模向相对较高的n模移动,从而导致ELM幅度较小。
The effect of plasma vertical jogging on edge localized modes (ELMs) is investigated in HL-2A tokamak. During the experiment, plasma jogging with a period of about 75 ms is performed, and the results show that both the ELM amplitude and period decrease when the plasma moves upward, which are qualitatively explained by the simulation based on the theory of peeling-ballooning mode including the resistivity effect. The upward movement of plasma causes a change in pedestal parameters, and then the dominant toroidal mode shifts to a relatively high-n mode with the effects of resistivity and diamagnetic, which lead to smaller ELM amplitudes.
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