摘要
A high-frequency magnetic probe is designed and developed on the XuanL ong-50(EXL-50)spherical torus to measure high-frequency magnetic field fluctuation.The magnetic loop,radio filters,radio-frequency limiter,and data acquisition system of the probe are comprehensively examined.The fluctuation data from the EXL-50 plasma are analyzed in the time–frequency domain using fast Fourier transforms.Moreover,distinct high-frequency instabilities are detected using this diagnostic system.In particular,significant frequency chirping is observed,which is consistent with the bumpon-tail drive instability predicted using the Berk–Breizman model.
作者
王明远
伦秀春
薄晓坤
刘兵
刘阿娣
石跃江
Mingyuan WANG;Xiuchun LUN;Xiaokun BO;Bing LIU;Adi LIU;Yuejiang SHI(Hebei Key Laboratory of Compact Fusion,Langfang 065001,People’s Republic of China;ENN Science and Technology Development Co.Ltd.,Langfang 065001,People’s Republic of China;Institute of Fusion Science,School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 610031,People’s Republic of China;Department of Plasma Physics and Fusion Engineering,University of Science and Technology of China,Hefei 230026,People’s Republic of China)
基金
supported by National Natural Science Foundation of China(No.11706151)。
