欧洲XFEL中PLC子系统与定时分配系统的同步

中文摘要 AI 辅助

欧洲XFEL每100毫秒产生一次脉冲串，其中包含多达4096个超短X射线闪光，闪光之间的间隔仅为222纳秒。这些闪光由线性电子加速器中的波荡器产生，并在真空管道中传输1公里后到达科学实验装置。精确的同步以及关于单个脉冲串内所有可配置脉冲（这些脉冲在每个10赫兹周期内可能变化）的信息可用性，使得控制、监测和测量在精度和利用率方面能够充分发挥潜力。基于MicroTCA的定时系统提供了所有必要的能力。然而，管理光束线和实验的大部分控制电子设备的工业可编程逻辑控制器（PLC）仅通过UART和NTP接口实现毫秒级的同步。本文介绍了一种基于MicroTCA中FPGA SoC EtherCAT解决方案的新开发，该方案利用分布式时钟实现与PLC的接口，以达到纳秒级的同步，并以确定性方式提供束流相关信息。

英文摘要

The European XFEL generates bursts of up to 4096 ultra-short X-ray flashes with a spacing of only 222 ns every 100 ms. These flashes are produced in the linear electron acceler- ator by undulators and guided 1 kilometer in vacuum pipes until they reach the scientific experiments. Accurate synchronization and the availability of information about all configurable pulses within a single burst, which can vary every 10 Hz cycle, enable the full potential of control, monitoring, and measurement in terms of accuracy and utilization. The MicroTCA-based timing system provides all the necessary capabilities. However, the industrial programmable logic controllers (PLCs), which manage most of the control electronics of the beamlines and experiments, are only synchronized on a millisecond-level through UART and NTP interfaces. This paper presents a new development based on an FPGA SoC EtherCAT solution in MicroTCA that implements an interface to the PLC using distributed clocks to achieve synchronization on nanosecond-level and provide beam-related information in a deterministic manner.

发表机构

• European XFEL（欧洲X射线自由电子激光设施）

机构由 AI 辅助整理，请以论文原文为准。