采用KMR方程,结合即将运转的北京自由电子激光器总体实验参数,对其光学速调管结构研究.详细分析计算输入功率、电子束能散度、色散磁场、漂移空间长度及位置、以及电子束流等参数对光学速调管增益的影响.基于北京自由电子激光器的振荡器结构,提出一组对电子束能散度要求适中的实用化光学速调管参数.并对其饱和功率、功率谱以及渐变摆动器进行分析.

Using the well-known KMR equations and combined with BFEL's overall experimental parameters, this paper presents a study of Optical Klystron (OK) configuration for the Beijing Free Electron Laser (BFEL) which will start to operate recently. The effects of the laser input power, electron beam energy distribution and its current, dispersion magnetic field, drift region distance and its position in the wiggler, upon the Free Electron Laser gain, are analyzed in detail. Based on the oscillator configuration of BFEL, a group of practial optical klystron parameters with a suitable beam energy spread has been put forward and the analyses of its saturation power, power spectrum, and tapered wiggler also have been made.