摘要
A new linear accelerating structure SFRFQ was proposed to transfer the RFQ inter-vane voltage to the inter-longitudinal accelerating gap voltage so as to improve the acceleration efficiency.A SFRFQ prototype is being constructed to explore its feasibilities,which will be installed behind the 1MeV ISR RFQ and accelerates the O^+ beam from 1MeV to 1.6MeV.A high power SFRFQ model cavity was designed and tested,which has proved that an accelerating voltaire higher than 70kV could be applied.A magnetic triplet matching section was designed to realize the beam matching between 1MeV ISR RFQ and SFRFQ.The upgrading of 1MeV ISR RFQ has been carried out smoothly, and its output beam current has reached 2mA.
介绍了SFRFQ加速系统的最新研究进展.为验证SFRFQ结构的抗打火性能,设计了一个高功率模型腔,进行了高功率打火实验,并最终证明了该结构的可行性.为验证SFRFQ加速器的载束性能,设计了一台长度仅为1m的600keV O^+ SFRFQ加速器,它将把从1MeV ISR RFQ引出的O^+离子加速到1.6MeV.为解决1MeV ISR RFQ引出束流与SFRFQ加速器的横向匹配问题,在其间插入了一个三单元磁四极透镜.SFRFQ加速器加工和1MeV ISR RFQ改造的进展顺利.
基金
国家自然科学基金(10455001
10605003)资助~~
