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由于回旋加速器在注入过程多种误差的存在,势必会导致注入的束流参数不可能与注入的轨道参数完全匹配。对于主体结构为紧凑型的回旋加速器CYCIAE-100,其磁极间隙受到了一定的限制。因此,研究注入失配的情况对加速过程的影响,特别是对轴向束流包络在加速过程的影响,对于紧凑型强流回旋加速器来说是非常重要的。利用改进后的多粒子模拟程序COMA,对CYCIAE-100轴向初始失配条件下的加速过程进行了模拟。通过模拟,分别比较了束流在轴向匹配和失配下条件的加速过程中的束流发射度、束流包络以及剥离引出后的相图的变化。
Due to the existence of many errors in the cyclotron injection process, it is inevitable that the injected beam parameters can not exactly match the injected orbit parameters. CYCIAE-100 compact cyclotron main structure for its pole gap has been subject to certain restrictions. Therefore, studying the impact of injection mismatch on the acceleration process, especially the influence of axial beam envelope on the acceleration process, is very important for compact high-intensity cyclotron. The accelerated multi-particle simulation program COMA was used to simulate the acceleration process of CYCIAE-100 under axial initial mismatch condition. By simulation, the beam emittance, the beam envelope and the change of the phase diagram after exfoliation were compared respectively under the conditions of axial matching and mismatch.