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介绍了在HIRFL注入器SFC上进行的中心区、聚束器系统和轴向注入 束运线的设计、加工和调试结果.中心区的设计采用了两种注入半径及相应的 两套螺旋式静电偏转镜,解决了高频电压在某些工作区域偏低及三次谐波加速 时轴向注入线上空间电荷效应较为严重的问题.新的锯齿波聚束器系统不仅可 以提高聚束效率,而且还提出了采用半频聚束模式以提高SFC与主加速器SSC 的纵向匹配效率.新设计的轴向注入束运线配备了两台在线 ECR离子源,提高 了电荷态分辨能力和注入相空间匹配能力,在提高注入效率的同时还改善了离 子源及束运线的工作环境和调束手段.
Describes the design, fabrication, and commissioning of the central zone, the buncher system, and the axial injection beamline on the HIRFL injector SFC. The center area is designed with two kinds of injection radii and the corresponding two sets of spiral electrostatic deflection mirrors to solve the problem that the high-frequency voltage is more serious in the axial injection line space charge effect when the working frequency is low and the third harmonic acceleration is accelerated problem. The new sawtooth beam-buncher system not only improves the beam-forming efficiency, but also proposes the use of a half-band beam-focusing mode to improve the longitudinal matching efficiency between SFC and the main accelerator SSC. The newly designed Axial Injection Bundle is equipped with two on-line ECR ion sources to improve the charge state resolution and injection phase space matching capabilities while improving the injection efficiency while improving the working environment of the ion source and the Bundle Tune tools.