直线感应加速器模拟软件多功能发射模块开发

在模拟直线感应加速器电子束输运过程中，为了正确设置注入器电子束参数，以注发射模型为基础，研发了可设置发射度、能散和电子束倾斜的多功能发射模型。理论研究了发射度、能散以及电子束倾斜角度，并将这些理论实现到发射模块上。建模对多功能发射模块进行测试，比较设定的电子束参数与模拟测定的电子束参数。通过比较，观测到设定电子束参数与模拟测定值一致，验证了多功能模块开发的正确性。

Development of multi-function emission module in LIAPIC3D code

To set emittance, velocity spread and beam tilt correctly, a multi-function emission module is developed in LIAPIC3D code. This module development is based on beam emission module, which could set beam energy, beam length correctly. During experiment, researchers could get value and angle of emittance. When setting emittance, researchers must input these two parameters. To set velocity spread, a Gauss random function is created. This function could create Gauss distribution random values, and which are related to particle energy. Beam tilt direction is determined by two angle parameters. After development of multi-function emission module, a proof principle simulation is designed. Emittance in different direction, velocity spread in z direction, and beam tilt are tested in simulation. The simulation results are coincident with input values, verifying the development of the multi-function module.