Compound sawtooth in EAST LHCD plasma: An experimental study

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 o...

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Published inChinese physics B Vol. 23; no. 8; pp. 396 - 401
Main Authors Xu, Li-Qing, Hu, Li-Qun, Chen, Kai-Yun, Li, Miao-Hui
Format Journal Article
LanguageEnglish
Published 01.08.2014
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/23/8/085201

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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/I long-lasting saturated 1/1 mode is related to the current driven by the LHCD near the q = 1 surface.
AbstractList 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.
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/I long-lasting saturated 1/1 mode is related to the current driven by the LHCD near the q = 1 surface.
Author Xu Li-Qing Hu Li-Qun Chen Kai-Yun Li Miao-Hui
AuthorAffiliation Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
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Notes 11-5639/O4
compound sawtooth, EAST, LHCD plasma
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/I long-lasting saturated 1/1 mode is related to the current driven by the LHCD near the q = 1 surface.
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Snippet 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...
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...
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SubjectTerms Crashes
Destabilization
Islands
Plasma (physics)
Tomography
Two dimensional
二维图像
低杂波电流驱动
低杂波驱动
化合物
复合锯齿
实验
等离子体
锯齿崩溃
Title Compound sawtooth in EAST LHCD plasma: An experimental study
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