CSNS 直线加速器空间电荷效应的模拟研究  

Simulation Study of Space Charge Effect for CSNS LINAC

作　　者：袁月[1,2] 王生[2] 彭军[2] 苑尧硕 姚泽恩[1] 

机构地区：[1]兰州大学核科学与技术学院,甘肃兰州730000 [2]中国科学院高能物理研究所,北京100049

出　　处：《原子能科学技术》2014年第5期773-780,共8页Atomic Energy Science and Technology

基　　金：国家自然科学基金资助项目(11175193)

摘　　要：本文利用三维空间电荷效应程序IMPACT-Z对直线加速器中的空间电荷效应进行了模拟研究,从单粒子动力学和多粒子动力学角度分析了束流在不同峰值流强下的发射度变化。在15mA流强下,比较了束流初始失配对束流发射度的影响,结果显示横向失配对发射度束流品质影响更大,实际调束过程中应保证束流失配因子不超过1.4。In the paper ,the simulation study on the space charge effect was performed at the LINAC by using three-dimension code IMPACT-Z .The emittance evolution was studied in the point of view of the singe-particle dynamics and multi-particle dynamics with different peak beam currents .The effect of mismatch was studied by simulation , and the emittance grow th and beam loss with different mismatch factors were given .

关 键 词：空间电荷效应 失配因子 误差效应 直线加速器 

分 类 号：O572[理学—粒子物理与原子核物理]