Study of the beam loading effect in the CSNS/RCS  

作　　者：苑尧硕 李开玮 王娜 入江吉郎 王生 

机构地区：[1]Dongguan Campus, Institute of High Energy Physics, Chinese Academy of Sciences [2]Dongguan Institute of Neutron Sciences [3]Institute of High Energy Physics, Chinese Academy of Sciences [4]High Energy Accelerator Research Organization

出　　处：《Chinese Physics C》2015年第4期78-83,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11175193)

摘　　要：The China Spallation Neutron Source/Rapid Cycling Synchrotron （CSNS/RCS） accelerates a high-intensity proton beam from 80 MeV to 1.6 GeV. Since the beam current and beam power is high, the beam loading is a severe problem for the stability of the circulating beam in the RCS. To study the beam loading effect in the CSNS/RCS theoretically, the RLC circuit model of the rf cavity, the method of Fast Fourier Transform and the method of Laplace transform have been employed to obtain the impedance of the rf system, the beam spectrum and the beam-induced voltage, respectively. Based on these physical models, the beam dynamics equations have been revised and a beam loading model has been constructed in the simulation code ORIENT. By using the code, the beam loading effect on the rf system of the CSNS/RCS has been investigated. Some simulation results have been obtained and conclusions have been drawn.The China Spallation Neutron Source/Rapid Cycling Synchrotron （CSNS/RCS） accelerates a high-intensity proton beam from 80 MeV to 1.6 GeV. Since the beam current and beam power is high, the beam loading is a severe problem for the stability of the circulating beam in the RCS. To study the beam loading effect in the CSNS/RCS theoretically, the RLC circuit model of the rf cavity, the method of Fast Fourier Transform and the method of Laplace transform have been employed to obtain the impedance of the rf system, the beam spectrum and the beam-induced voltage, respectively. Based on these physical models, the beam dynamics equations have been revised and a beam loading model has been constructed in the simulation code ORIENT. By using the code, the beam loading effect on the rf system of the CSNS/RCS has been investigated. Some simulation results have been obtained and conclusions have been drawn.

关 键 词：beam loading effect beam-induced voltage beam simulation CSNS/RCS 

分 类 号：O571.53[理学—粒子物理与原子核物理]