摘要
120 MeV电子直线加速器对于束流发射度有较高的要求,传统的光学准直难以满足需求。本文研究采用基于在线束流准直方法(Beam Based Alignment,BBA)以实现精度更高的准直,获得更好的束流性能。根据加速器结构配置情况,使用消色散校正法(Dispersion-free Steering Algorithm,DFS),对加速器束流匹配传输段在不同束流抖动情况下进行模拟计算。计算结果表明,DFS算法对于120 MeV电子直线加速器装置的束流准直应用效果良好。
[Background] 120 MeV electron linear accelerator has high requirement for beam emittance, and the traditional optical collimation cannot meet the requirement. [Purpose] This study aims to use beam-based alignment(BBA) method to achieve higher precision collimation and obtain better beam quality. [Methods] According to the configuration of 120 MeV electron linear accelerator, all of beam position monitor(BPM) measurement data of the corresponding position under different energy were collected, then, the dispersion-free steering(DFS) algorithm was used to simulate the correction of accelerator matching transmission section in different beam jitter conditions.[Results] The simulation results indicate that the algorithm can minimize the transverse offset of quadrupole to50 μm. [Conclusions] The DFS algorithm can reduce the trajectory distortion in the low beam jitter accelerator.
作者
孙彬
王煜
黑东炜
李斌康
谭新建
翁秀峰
刘军
张小东
付竹明
SUN Bin;WANG Yu;HEI Dongwei;LI Binkang;TAN Xinjian;WENG Xiufeng;LIU Jun;ZHANG Xiaodong;FU Zhuming(State Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Northwest Institute of Nuclear Technology,Xi'an 710024,China)
出处
《核技术》
CAS
CSCD
北大核心
2020年第6期69-74,共6页
Nuclear Techniques
基金
国家自然科学基金(No.11375145)资助。
关键词
束流准直
直线加速器
消色散校正法
束流抖动
轨道校正
Beam-base alignment
Linear accelerator
Dispersion-free steering algorithm
Beam jitter
Orbit correction
