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

Nuclear Fushion

article

Zhuo Huang¹  Yunfeng Liang¹  Qiming Hu⁴  Nengchao Wang¹  Da Li¹  Xiaoyi Zhang¹  Bo Rao¹  Zhipeng Chen¹  Song Zhou¹  Qi Zhang¹  Chengshuo Shen¹  Ying He¹  Yonghua Ding¹ 

[1] International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology;Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung—Plasmaphysik;Institute of Plasma Physics, Chinese Academy of Sciences;Princeton Plasma Physics Laboratory, Princeton University

关键词: magnetohydrodynamics;    magnetic reconnection;    tearing instability;    tokamaks;   

DOI  :  10.1088/1741-4326/ab8859

来源: Institute of Physics Publishing Ltd.

【 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.

【 授权许可】

Unknown