【摘要】 介绍了基于AT的FMA方法在BEPCⅡ上首次较系统的应用．将AT分析结果与MAD和SAD程序比较,吻合较好．考虑高频腔和辐射阻尼效应,利用FMA分别对BEPCⅡ对撞模式和注入模式进行分析,揭示了相应的单粒子动力学,为进一步优化提供指导和依据．结果显示纵向横向耦合共振可能会对粒子动力学产生较大影响．更多还原

【Abstract】 The frequency map analysis(FMA)method is systematically applied to the lattice of the BEPCⅡstorage ring for the first time in this paper.We compute characteristic parameters of the lattice with the Accelerator Toolbox(AT)code,in which the FMA method is imbedded,and compare the results with those of MAD and SAD codes.The lattices of the BEPCⅡcollision and injection modes are analyzed and optimized using FMA with the RF cavity and radiation on.Both on-and off-momentum frequency maps are studied to have a complete picture Of dynamics.The synchro-betatron resonance is found to have large effect on the beam dynamics.更多还原