Beam background with beam–beam effect at BEPCII collider  

作　　者：Bin Wang Zhiyuan Li Yuan Zhang Huiping Geng 

机构地区：[1]Key Laboratory of Particle Acceleration Physics and Technology,Institute of High Energy Physics,Chinese Academy of Sciences,19(B)Yuquan Road,Beijing,100049,China [2]University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Radiation Detection Technology and Methods》2024年第4期1505-1510,共6页辐射探测技术与方法(英文)

基　　金：supported by the Innovation Study of IHEP.

摘　　要：Purpose The beam-beam interaction can change the beam distribution,especially at the interaction point,which is a critical factor influencing the cross section of Touschek scattering.Studying the beam background with beam-beam effect will enhance our understanding of the beam background during collisions.Method A new beam dynamics code which could support strong-strong beam-beam interaction in realistic lattice tracking is used in the background simulation study.The impact of the beam-beam interaction on the beam background simulation and experiment at BEPCII is quantified both with and without beam-beam effect.Results The simulation result shows that the inclusion of beam-beam effect leads to a decrease in the beam background by approximately 20%,which is consistent with the trend of experimental observation.Since the beam dynamics tracking is more accurate with self-consistent lattice tracking and collision simulation,new tools and methodologies are expected to increase the accuracy and prediction capability of the background simulation,which would contribute to the related study in future e^(+)e^(-)colliders.

关 键 词：BACKGROUND BEPCII Beam-beam 

分 类 号：O57[理学—粒子物理与原子核物理]