Integrated Design Method and Beam Dynamics Simulations for the FETS Radio Frequency Quadrupole
Integrated Design Method and Beam Dynamics Simulations for the FETS Radio Frequency Quadrupole
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FETS射频四极杆的集成设计方法和束流动力学仿真
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
J. Pozimski
中科院分区：
文献类型：
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作者：
S. Jolly;A. Letchford;M. Easton;J. Pozimski
一个4米长，324兆赫的四叶片涡轮机，由四个耦合部分组成，目前正在为英国RAL的前端测试台（FETS）设计。一种新的设计方法，集成计算机辅助设计和电磁设计的电子束动力学模拟，正在被用来优化设计的电子束。RFQSIM代码生成基本的参数。根据这些参数，在Autodesk Inventor中生成RFQ叶片尖端的完整CAD模型。然后将该模型导入到场映射代码中，以产生叶片尖端周围的静电场的模拟。然后，使用通用粒子跟踪器（GPT），将该场图用于模拟粒子束流动力学。以前的研究已经进行了使用字段映射在CST EM工作室。一个更先进的技术，使用Comsol Multiphysics和Matlab，更紧密地集成了CAD建模，场映射和束流动力学模拟，描述。使用这种新方法的结果，并与以前的优化过程中使用的字段地图从CST。
A 4m-long, 324MHz four-vane RFQ, consisting of four coupled sections, is currently being designed for the Front End Test Stand (FETS) at RAL in the UK. A novel design method, integrating the CAD and electromagnetic design of the RFQ with beam dynamics simulations, is being used to optimise the design of the RFQ. Basic RFQ parameters are produced with the RFQSIM code. A full CAD model of the RFQ vane tips is produced in Autodesk Inventor, based upon these parameters. This model is then imported into a field mapping code to produce a simulation of the electrostatic field around the vane tips. This field map is then used to model the beam dynamics within the RFQ using General Particle Tracer (GPT). Previous studies have been carried out using field mapping in CST EM Studio. A more advanced technique using Comsol Multiphysics and Matlab, that more tightly integrates the CAD modelling, field mapping and beam dynamics simulations, is described. Results using this new method are presented and compared to the previous optimisation process using field maps from CST.