加速器驱动次临界系统注入器Ⅱ低温恒温器控制系统

Cryomodule Control System of Injector Ⅱ for Accelerator Driven Sub-critical System

摘要: 根据加速器驱动次临界系统（ADS）注入器Ⅱ对低温设备的要求设计了一套EPICS架构的控制系统，实现了低温恒温器系统的远程监控功能。该系统的主要控制设备为PLC和串口服务器，相应的控制程序在LabVIEW中开发完成，并使用DSC模块将被控设备的状态和参数等信息以过程变量的形式发布到控制网络中，实现了EPICS接入。使用PID算法将低温恒温器的氦槽压力控制在目标值的±100 Pa内变化，保证了超导腔的正常工作要求。设计的控制系统运行稳定，在5 MeV的束流实验中发挥了作用。

Abstract: The cryomodule is an important subsystem of the injector Ⅱ for accelerator driven sub-critical system (ADS), whose performance will determine the quality of the superconducting section. A remote control system based on EPICS was introduced to serve the cryomodule and validate its performance. PLC and serial port servers were chosen to implement the control functions. The supervisory control procedure was programmed with LabVIEW, and the communication with EPICS was implemented by using DSC module. The pressure fluctuation can be controlled within ±100 Pa through the PID algorithm. The control system can fulfill the design requirement, and contribute to the 5 MeV beam commission.