Measurements of the fast electron bremsstrahlung emission during electron cyclotron resonance heating in the HL-2A tokamak.
Measurements of the fast electron bremsstrahlung emission during electron cyclotron resonance heating in the HL-2A tokamak.
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DOI：
10.1063/1.3488966
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发表时间：
2010-10
期刊：
影响因子：
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通讯作者：
Y. P. Zhang;Yi Liu;Xinying Song;G. Yuan;W. Chen;X. Ji;X. Ding;J. Yang;J. Zhou;X. Li;Q. Yang;X. Duan;C. Pan;Y. Liu
中科院分区：
文献类型：
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作者：
Y. P. Zhang;Yi Liu;Xinying Song;G. Yuan;W. Chen;X. Ji;X. Ding;J. Yang;J. Zhou;X. Li;Q. Yang;X. Duan;C. Pan;Y. Liu
最近在HL-2A装置上发展了一种基于碲化镉（CdTe）探测器的快电子韧致辐射（FEB）诊断技术，用于测量10-200 keV能量范围内FEB辐射的时间演化。在赤道面上垂直观察等离子体，测量了八个不同能道的硬X射线谱。光谱的鉴别是通过精确的光谱测定来实现的。该系统还采用了快速数字化和软件信号处理技术。中子、伽马射线和磁干扰的周围环境需要小心的屏蔽。在电子回旋共振加热过程中，发现了快电子的产生和电子鱼骨（e-fishbone）的振荡，利用FEB测量系统，实验证实了该模式与电子回旋共振加热产生的30-70 keV快电子有很强的相关性。
A fast electron bremsstrahlung (FEB) diagnostic technique based on cadmium telluride (CdTe) detector has been developed recently in the HL-2A tokamak for measurements of the temporal evolution of FEB emission in the energy range of 10-200 keV. With a perpendicular viewing into the plasma on the equatorial plane, the hard x-ray spectra with eight different energy channels are measured. The discrimination of the spectra is implemented by an accurate spectrometry. The system also makes use of fast digitization and software signal processing technology. An ambient environment of neutrons, gammas, and magnetic disturbance requires careful shielding. During electron cyclotron resonance heating, the generation of fast electrons and the oscillations of electron fishbone (e-fishbone) have been found. Using the FEB measurement system, it has been experimentally identified that the mode strongly correlates with the electron cyclotron resonance heating produced fast electrons with 30-70 keV.