Hybrid加速结构的理论及预制研究

项目名称： Hybrid加速结构的理论及预制研究

项目编号： No.11475201

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 裴士伦

作者单位： 中国科学院高能物理研究所

项目金额： 100万元

中文摘要： 电子直线加速器中的常规聚束系统一般由驻波预聚束器、行波聚束器（β<1）及标准加速节（β=1）组成。在尽可能保证束流性能的情况下，为降低常规聚束系统的建造成本，本项目对一种新型的Hybrid类型加速结构进行研究。将Hybrid加速结构应用到工业辐照行波电子直线加速器中，可在不增加建造成本的情况下使其效率提升10%-20%，从而提高资源的利用率并增加经济效益。通过将驻波和行波场集成到单根加速结构中，Hybrid加速结构的聚束和加速性能相对较好。Hybrid加速结构中同时存在驻波和行波两种场，因此在动力学设计、结构设计与调配、场分布测量等方面都需采用与以往不同的创新性方法，这些都是急需解决的关键技术。在已有相关工作积累的基础上，本项目将对Hybrid加速结构中的动力学机制进行深入研究，掌握Hybrid加速结构的研制方法，最终研制出一套满足实际工业应用要求的样机，对其高功率性能进行测试。

中文关键词： 束流动力学；加速结构；高功率微波；电子直线加速器

英文摘要： In the travelling wave electron linear accelerator, the standard bunching system is usually composed by a standing wave pre-buncher , a travelling wave buncher （β<1） and a standard accelerating section（β=1）. To obtain similar beam performance as the standard bunching system and lower the construction cost at the same time, a new type of hybrid accelerating structure is proposed. The hybrid accelerating structure can be applied in the industrial travelling wave electron linear accelerators, then the acceleator efficiency can be enhanced by 10%-20%, while the construction cost is not increased. By integrating the standing wave and travelling wave fields into one single structure, the hybrid structure has relatively better bunching and accelerating capabilities. Due to the existing of both the standing wave and the travelling wave fields, innovative methods need to be developed in the beam dynamics design, the structure design and tuning, the field distribution mesurement and so on. Based on the previous theoretical studies on the hybrid buncher conducted by the group members, the beam dynamics mechanism in the hybrid accelerating structure will be deeply studied, and the structure R&D methods will be investigated. Finally, a hybrid structure prototype will be developed, and the high power test will be carried out. The developed hybrid structure by this project should be able to meet the industrial requirements.

英文关键词： Beam dynamics;Accelerating structure;High power microwave;Electron linear accelerator