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拉曼型自由电子激光器作为一种兆瓦级高功率毫米波、太赫兹波辐射源,其电子的运动稳定性对整体器件的性能至关重要.本文采用科尔莫戈罗夫熵方法,以典型的麻省理工学院公布的实验数据为例,比较研究拉曼型正向导引磁场和反向导引磁场两类自由电子激光器中相对论电子的运动稳定性.结果表明:摇摆器绝热压缩磁场对电子运动的稳定性无实质性影响,但对电子运动影响大;电子束自身场在拉曼型正向导引磁场自由电子激光器中使电子运动稳定性变差,而在拉曼型反向导引磁场自由电子激光器中则可改善电子运动稳定性.
As a megawatt high-power millimeter-wave and terahertz radiation source, Raman-type free electron laser (LDLT) is one of the most important devices in the field of motion stabilization.In this paper, Kolmogorov entropy method A typical example of the experimental data published by Massachusetts Institute of Technology (MIT) is used to compare the motion stability of relativistic electrons in two kinds of free-electron lasers, including forward-guided magnetic field and reverse-oriented magnetic field. The results show that the rocker adiabatic compression field Which has no substantial effect on the stability of electron motion but has a great influence on electron motion. The electron beam itself has poor electron motion stability in a Raman-type forward-guided free-electron laser and in Raman-type reverse direction Guided magnetic field free electron laser can improve the stability of the electron movement.