摘要: 介绍了近年在ＨＩＲＦＬ注入器ＳＦＣ上所进行的和正在进行的一些改进工作和取得的效果．主要涉及中心区的重新设计加工，研制新的聚束器系统和新的轴向注入束运线，以及对ＳＦＣ真空系统的改造. The article presents the new development at SFC, the HIRFL injector cyclotron. It concerns the new central region, the new buncher system, the new axial injection line, and the improvement of SFC vacuum system. The results and the expected results are given after these modifications are made. Especially it introduces the half frequency bunching method to increase the longitudinal matching efficiency between the injector and the main cyclotron, and the special treatment for the space...