在粒子加速器中，粒子束与真空室内壁相互作用产生的二次电子是影响束流品质的重要因素，特别在正电子、质子和重离子加速器中，真空室在粒子轰击下产生大量二次电子，聚集形成电子云，对储存束流的稳定性、能量、发射度、寿命等均造成不利影响。因此，对粒子储存环材料二次电子发射过程以及电子云的形成、抑制进行研究是十分必要的。本课题拟通过对粒子加速器真空室材料二次电子发射机理研究，采用CST 粒子工作室方法模拟二次电子发射过程，定量分析二次电子发射的影响因素。建立有效的二次电子测试实验系统，精确测定几种常用材料的二次电子产额。此项研究结果不仅为新一代粒子加速器设计建造提供依据。还可以应用于电子显微成像、电真空器件、航空航天器件设计建造等领域中。

In particle accelerators, the secondary electrons resulting from the interaction bwtween the particles and the vacuum chamber have important influence on beam quality. Especially for the positron, proton and heavy ion accelerators, massive electrons lead to electron cloud, which affect the stability, energy, emittance and beam life adversely. Therefore it's neccesary to study the secondary electron emission (SEE) and electron cloud. In our research, CST PARTICLE STUDIO method will be adopted to simulate the process of SEE and analyse the influencing factors quantitatively. An experimental facility will be designed and constructed to measure the seondary electron yields of accelerator materials accurately.This research will provide the basis for the design and construction of the new generation of particle accelerator, and can also be applied in the fields of electron microscope, electro vacuum and aerospace components.