HL-1装置逃逸电子产生硬X射线锯齿振荡的频谱计算

COMPUTATION OF THE FREQUENCY SPECTRUM OF HADR-X-RAY SAWTOOTH OSCILLATIONS DUE TO RUNAWAY ELECTRONS IN THE HL-1 TOKAMAK

在HL-1装置上用硬X射线测得相应的打在孔栏处逃逸电子通量,其通量脉动呈现反锯齿振荡。为辨别这个振荡是一个真实的物理扰动,还是毫无意义的噪声涨落或背景振动,我们对获取的硬X射线通量作了频谱分析。

Spectral analysis using fast Fourier transform(FFT)is presented for data on sawtooth oscillations of hard x-ray generated by runaway electrons which impact the limiter of the HL-1 tokamak.It is shown that a sawtooth oscillation of certain frequency band exists in the plasma.