BEPCII基于数字采样的鉴相器设计

Development of BEPCII timing system phase detector

在北京正负电子对撞机重大改造项目(BEPCII)中,定时系统承担的任务是对储存环以及直线的各部分设备提供同步信号,从而协调整个对撞机系统的正常运行。描述了BEPCII定时系统鉴相器的设计原理和误差分析。该鉴相器用于对BEPCII不同途径传输的两路499.8MHz信号的相位进行鉴别。采用纯数字电路,不受温度以及湿度影响。且鉴相精度在1o以内。

BEPC II Timing System provides synchronous signals to the storage ring and Linac,so to correspond all the components to make sure the whole system can run normally.This article describes the design principle and development of the BPECII phase detector.The phase detector is used to detect the phases of the two way 499.8MHz signals.