加速静电透镜的传输模拟  

Transmission Simulation of Accelerate Electrostatic Lens

作　　者：李超龙[1] 石海泉[1] 吴泽九[1] 

机构地区：[1]华东交通大学基础科学学院,南昌330013

出　　处：《核电子学与探测技术》2013年第9期1107-1110,共4页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金资助项目(21063007);江西省科技支撑计划资助项目(2010BGB00602);江西省教育厅科研基金资助项目(GJJ11677);华东交通大学校立科研基金资助项目(10JC01)

摘　　要：由于强流束较强的空间电荷效应,强流束的传输一直是备受关注的问题。基于加速静电透镜的强流束传输和模拟迭代等理论,编写了加速静电透镜的束流传输模拟程序ATLENS,ATLENS适用于强流束在静电透镜中传输的模拟计算。在不同束流流强条件下,用ATLENS与TRANSPORT、PARMELA等程序进行了模拟计算,并对模拟结果进行了比较分析。结果表明:随着束流流强增大,束流包络曲线横向发散变显著,非自洽解与自洽解的偏差增大。Intense beam transmission has always been playing an important role due to strong space -charge effect of intense beam .Based on theory of intense beam transmission in accelerate electrostatic lens and simula -tive iteration , a computer simulation code ATLENS is developed to calculate intense beam transmission in accell-erate electrostatic lens .ATLENS and other codes were used to simulate different current beam transmission in accelerate electrostatic lens , and the simulation results are compared and analyzed .The simulation results indi-cate that the transverse divergence effect of space -charge effect increases with increasing the beam current , and the deviation of non -self-consistent solution and self -consistent solution becomes more notable .

关 键 词：加速静电透镜 强流束 空间电荷效应 传输模拟 

分 类 号：O463[机械工程—光学工程] O242.1[理学—电子物理学]