自由电子激光装置小型化相关物理与技术研究

自由电子激光具有其它普通激光光源所无法替代的优点，在科学研究，及国防、医学、工业和国民经济各方面都具有非常广阔的重要应用。但自由电子激光，特别是X射线自由电子激光装置复杂，规模巨大，投资高，为自由电子激光的普及与发展造成巨大障碍。因此自由电子激光装置小型化是自由电子激光领域的一个重要发展方向和研究热点，对于自由电子激光的普及及应用有着重要的意义。我们将在国外已有相关工作以及我们自己工作基础上，针对FEL装置小型化相关的物理机制和技术途径开展研究。重点对高增益谐波FEL的物理机制进行概念研究，探索研究在较低能量电子束下高增益谐波FEL的新方案；对高场强、短周期波荡器的优化设计与技术方案进行深入研究；对横向梯度磁场波荡器进行研究设计，研究其用于激光加速电子束来产生FEL的可行性。

Free electron laser(FEL) has incomparable advantages over other common laser source, has wide and important applications in scientific research, national defense, medical, industrial and all sectors of the national economy. But FEL facilities, especially X-ray FEL facilities are complex, large scale, and high investment, caused great obstacles for its development and popularization. Compact free-electron laser facility is an important direction of development and research focus in the field of FEL. On the bases of the related works abroad and our own, we will research on physical mechanism and technical approaches for compact FEL devices. We will put the stress on the physical mechanism of harmonic FEL in high gain mode, and explore the new scheme of the high gain harmonic FEL with lower energy electron beam; make a thorough study for the technology scheme and the optimization design of short period undulator; research and design transverse gradient undulator, study the feasibility of FEL with it for the laser acceleration electron beam.