Disentanglement of density and rotation dependences of the field penetration threshold on the J-TEXT tokamak

被引：13

作者：

Huang, Zhuo ^{[1
,2
]}

Liang, Yunfeng ^{[1
,2
,3
]}

Hu, Qiming ^{[4
]}

Wang, Nengchao ^{[1
]}

Li, Da ^{[1
]}

Zhang, Xiaoyi ^{[1
]}

Rao, Bo ^{[1
]}

Chen, Zhipeng ^{[1
]}

Zhou, Song ^{[1
]}

Zhang, Qi ^{[1
]}

Shen, Chengshuo ^{[1
]}

He, Ying ^{[1
]}

Ding, Yonghua ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Int Joint Res Lab Magnet Confinement Fus & Plasma, Wuhan 430074, Peoples R China

[2] Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, Partner Trilateral Euregio Cluster TEC, D-52425 Julich, Germany

[3] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China

[4] Princeton Univ, Princeton Plasma Phys Lab, POB 451, Princeton, NJ 08543 USA

来源：

NUCLEAR FUSION | 2020年 / 60卷 / 06期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

magnetohydrodynamics; magnetic reconnection; tearing instability; tokamaks; RESONANT MAGNETIC PERTURBATIONS; MHD STABILITY; LOCKED MODES; DIII-D;

D O I：

10.1088/1741-4326/ab8859

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The field penetration threshold of magnetic perturbations has been observed to vary non-monotonically with an increase of density in ohmic plasmas on the J-TEXT tokamak. This observation appears contradicting the previous empirical density scaling law. Disentanglement of plasma density and rotation dependences of the field penetration threshold has been carried out. It shows that the field penetration threshold depends only weakly on the density but linearly on the plasma rotation. This result is not only important for the prediction of error field tolerance in fusion devices, but also opens a question on the role of density in the forced magnetic reconnection process in magnetized plasmas.

引用

页数：7

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