EAST托卡马克中央定时系统的实现

Development of the central timing system on the EAST Tokamak

中央定时系统是EAST托卡马克装置总控系统的重要组成部分,是总控系统对各子系统进行时序和触发控制的基础。本工作建立的EAST中央定时系统采用分布式的系统结构,可对32MHz的系统时钟信号进行0—65535的任意整数分频;能对系统触发进行延迟输出,最大的延迟时间为4294s、延迟的分辨率为1μs。该系统性能稳定,并已成功地投入到2006年9月EAST托卡马克装置的首轮正式物理放电实验中。

The central timing system is an important part of the central control system on the Experimental Advanced Superconducting Tokamak （EAST）, and it is the base of the central control system to control the timing and trigger of every subsystem. Based on the distributed architecture, this project established a central timing system on the EAST Tokamak. The central timing system has the ability to divide the 32 MHz system clock with any integer from 0 to 65535, and it can delay the system trigger signal with the longest delay interval of 4294 s under 1 μs resolution. This timing system is stable and was used successfully in the first physics experiment of the EAST superconducting Tokamak in September 2006.