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研制了大功率宽带快速扫频射频系统,其用于中国散裂中子源(CSNS)快循环同步加速器(RCS)中,主要包括铁氧体加载谐振腔、射频功率源、偏流源和低电平控制系统。射频系统工作重复频率为25Hz,扫频范围为1.022~2.444MHz,单个腔体(双加速间隙)可提供最大30kV加速电压。两级的调谐控制能解决快速扫频过程中的系统失谐问题,采用束流前馈、直接反馈等多种技术手段可对束流负载效应进行补偿。
A high-power broadband fast-sweep RF system is developed for fast circulating synchrotron (RCS) in China spallation neutron source (CSNS), including ferrite-loaded resonant cavity, RF power source, bias current source and low power Flat control system. RF system operating repetition frequency of 25Hz, sweep range of 1.022 ~ 2.444MHz, a single cavity (double acceleration gap) can provide up to 30kV acceleration voltage. The two-level tuning control can solve the problem of system detuning in the fast sweep process. The beam loading effect can be compensated by a variety of techniques such as beam feedforward and direct feedback.