电子束注入器是自由电子激光太赫兹源的关键部件，决定整个装置的性能。独立调谐式注入器利用速度压缩和RF聚焦特性缩短束线长度并提升性能，具有高品质、低成本、结构紧凑的优点，在加速器领域具有良好应用前景。但目前对该类注入器的共性缺乏深入研究，可变参数过多以致设计与实现方法亦不确定，从而阻碍其发展和普及。本项目针对高功率太赫兹源小型化的需求，深入研究独立调谐注入器的束流与微波特性并明确性能优化机制；开发智能算法实现最佳设计，建立可调配耦合系统的电路模型用于指导工程实现；依托现有的直线加速器试验台架，开展束流与功率实验以修正理论结果与工程模型，并在此基础上探索以ITC微波腔为核心的小型注入器设计思路。本项目将从基础理论、单元技术及工程实现三方面解决该类注入器设计与实验中的关键问题，为其发展提供系统的理论分析方法与技术基础，促进高品质电子束注入器及高功率太赫兹源的小型化。

As the key component in Free Electron Laser-Terahertz source(FEL-THz), the injector determines the entire facility performance. Independently Tunable Cavity(ITC) injector uses velocity bunching and RF focusing to shorten beamline length and improve beam performance, it has good application prospects in accelerator areas due to its high performance, low cost and compact layout. However, commonality of this type of injectors is yet to study deeply, design and implementation methods are uncertain due to many tunable variables, either. Thus hindering its development and popularization. This project will be based on application requirements of compact high-power Terahertz sources, develop further study of beam and microwave characteristics, and clarify working mechanism for the ITC injector; develop intelligent algorithm to seek for optimal designing, construct an electrical model for the tunable coupling system to guide engineering implementation; conduct beam and power experiments to modify theoretical results and the engineering model, and explore design schemes for compact injectors based on ITC. This project will solve key problems of designing and experiments for the ITC injectors in aspects of basic theories, unit techniques and engineering implementations, provide systematic analyzing methods and technologies, and promote the miniaturization for high-performance injectors and high power THz sources.