CAJ | 학술논문

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.
개소료기우AT적FMA방법재BEPCⅡ상수차교계통적응용.장AT분석결과여MAD화SAD정서비교,문합교호.고필고빈강화복사조니효응,이용FMA분별대BEPCⅡ대당모식화주입모식진행분석,게시료상응적단입자동역학,위진일보우화제공지도화의거.결과현시종향횡향우합공진가능회대입자동역학산생교대영향.
The frequency map analysis (FMA) method is systematically applied to the lattice of the BEPCⅡ storage 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 BEPCⅡ collision 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.