多线程通信方法在高频幅度控制中的应用

高频系统幅度控制环路开环时，束流将会在腔上引入与正常工作腔压可比的场，流强升高时束流要从腔上得到更多功率，此时腔自身消耗的功率保持不变，这就要求高频幅度控制发挥作用，满足束流和腔功率的要求。作为高频系统监控程序的一个组成部分，本文采用了多线程串口通信的方法实现了对SSRF高频系统激励电平的控制。

Application of multi-threading communication in RF amplitude control

When the amplitude loop of the RF system is opening, the beam will introduce a field that can compare with the working cavity voltage. As the beam energy is higher, the beam needs more power from the cavity and the dissipated power on the cavity should keep unchanged. As a constituent of the monitor programs, a method of multi-threading serial communication to control the driver low-level of the RF system in SSRF is introduced.