Compound sawtooth in EAST LHCD plasma：An experimental study

doi:10.1088/1674-1056/23/8/085201

中国物理B ›› 2014, Vol. 23 ›› Issue (8): 85201-085201.doi: 10.1088/1674-1056/23/8/085201

• PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES • 上一篇下一篇

Compound sawtooth in EAST LHCD plasma：An experimental study

徐立清, 胡立群, 陈开云, 李妙辉

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

收稿日期:2013-10-17 修回日期:2014-03-06 出版日期:2014-08-15 发布日期:2014-08-15
基金资助:
Project partially supported by the JSPS-NRF-NSFCA3 Foresight Program in the Field of Plasma Physics (NSFC) (Grant No. 11261140328) and the National Natural Science Foundation of China (Grant No. 10935004).

Compound sawtooth in EAST LHCD plasma：An experimental study

Xu Li-Qing (徐立清), Hu Li-Qun (胡立群), Chen Kai-Yun (陈开云), Li Miao-Hui (李妙辉)

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Received:2013-10-17 Revised:2014-03-06 Online:2014-08-15 Published:2014-08-15
Contact: Xu Li-Qing E-mail:lqxu@ipp.cas.cn
Supported by:
Project partially supported by the JSPS-NRF-NSFCA3 Foresight Program in the Field of Plasma Physics (NSFC) (Grant No. 11261140328) and the National Natural Science Foundation of China (Grant No. 10935004).

摘要/Abstract

摘要： A compound sawtooth with an incomplete relaxation was observed in EAST's lower hybrid current drive (LHCD) plasma. The sub-crash phase of the compound sawtooth corresponds to a longer-lasting and slower-growing 1/1 mode. Based on the two-dimensional (2D) SXR tomography, the time-dependent 2D image of a compound sawtooth crash is obtained. The island produced during a resistive internal kink mode is observed in the all crash phases of the compound sawtooth. The destabilization of 1/1 long-lasting saturated 1/1 mode is related to the current driven by the LHCD near the q=1 surface.

关键词: compound sawtooth, EAST, LHCD plasma

Abstract: A compound sawtooth with an incomplete relaxation was observed in EAST's lower hybrid current drive (LHCD) plasma. The sub-crash phase of the compound sawtooth corresponds to a longer-lasting and slower-growing 1/1 mode. Based on the two-dimensional (2D) SXR tomography, the time-dependent 2D image of a compound sawtooth crash is obtained. The island produced during a resistive internal kink mode is observed in the all crash phases of the compound sawtooth. The destabilization of 1/1 long-lasting saturated 1/1 mode is related to the current driven by the LHCD near the q=1 surface.

Key words: compound sawtooth, EAST, LHCD plasma

中图分类号: (Macroinstabilities (hydromagnetic, e.g., kink, fire-hose, mirror, ballooning, tearing, trapped-particle, flute, Rayleigh-Taylor, etc.))

52.35.Py

52.70.La (X-ray and γ-ray measurements) 52.55.Tn (Ideal and resistive MHD modes; kinetic modes) 52.55.Fa (Tokamaks, spherical tokamaks)

徐立清, 胡立群, 陈开云, 李妙辉. Compound sawtooth in EAST LHCD plasma：An experimental study[J]. 中国物理B, 2014, 23(8): 85201-085201.

Xu Li-Qing (徐立清), Hu Li-Qun (胡立群), Chen Kai-Yun (陈开云), Li Miao-Hui (李妙辉). Compound sawtooth in EAST LHCD plasma：An experimental study[J]. Chin. Phys. B, 2014, 23(8): 85201-085201.

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Compound sawtooth in EAST LHCD plasma：An experimental study

Compound sawtooth in EAST LHCD plasma：An experimental study

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