BEPCII直线定时系统光信号收发器的研制

Application of optical transceiver in timing control of BEPCII linac

定时系统为BEPCII直线电子枪、调制器和正电子源等设备提供精确的同步触发信号。因光纤介质的传输损耗低,使用光纤收发器传输同步触发脉冲信号,不但可以实现信号的远距离传输,同时保障了信号的电气隔离,增强了系统抗噪声能力。目前,自主研发的OTB插件已经投入了BEPCII的直线定时系统的运行,结果表明系统性能达到并优于定时系统的设计指标。

Timing Control system provides the precise pulse for electrical gun, modulator and positron source with using optical transceiver. It is possible that the signal with the same pulse can be transmitted more distance via optical medium because of a little propagation attenuation. The optical transceiver also improve an antinoise ability and isolate the signal between two different devices. The OTB interface has been put into use for timing control system of BEPCII Linac. Its result makes it clear that the performance of OrB reaches and preponderates over the original design.