CAJ | 학술논문

针对上海光源机器故障分析的需求，对原有储存环束流轨道联锁系统进行升级，实现对储存环束流位置测量系统中140台束流位置监测器(Beam Position Monitor, BPM)电子学输出的联锁信号进行标记，同时锁存丟束过程中所有BPM电子学中的逐圈轨道数据。联锁信号的处理与锁存触发信号的输出在FPGA (Field Programmable Gate Array)内完成。该系统集成至储存环的物理实验与工业控制系统(Experimental Physics and Industrial Control System, EPICS)控制系统之中。束流检测实验表明，该系统能够准确区分不同BPM电子学输出的联锁信号，同时锁存丟束时逐圈轨道数据，并通过该系统观测到了储存环束流丢失过程中的逐圈轨道变化。
침대상해광원궤기고장분석적수구，대원유저존배속류궤도련쇄계통진행승급，실현대저존배속류위치측량계통중140태속류위치감측기(Beam Position Monitor, BPM)전자학수출적련쇄신호진행표기，동시쇄존주속과정중소유BPM전자학중적축권궤도수거。련쇄신호적처리여쇄존촉발신호적수출재FPGA (Field Programmable Gate Array)내완성。해계통집성지저존배적물리실험여공업공제계통(Experimental Physics and Industrial Control System, EPICS)공제계통지중。속류검측실험표명，해계통능구준학구분불동BPM전자학수출적련쇄신호，동시쇄존주속시축권궤도수거，병통과해계통관측도료저존배속류주실과정중적축권궤도변화。
Background: Required by machine malfunction analysis, the beam orbit interlock system for the storage ring needs to be upgraded at the Shanghai Synchrotron Radiation Facility (SSRF). Purpose: This study aims to implement an upgraded new interlock system that can label 140 interlock signals coming from different Beam Position Monitor (BPM) electronics and record all data in the new system. And the turn-by-turn data in the BPM electronics Post Mortem buffer will be latched whenever the interlock occurs. Methods: The interlock signals and the latch signals were transmitted through the optical fiber and processed in an NI PXI 7813R Field Programmable Gate Array (FPGA) board. NI PXI-8106 controller is configured to run Linux operation system for Input/Output Controller (IOC) of Experimental Physics and Industrial Control System (EPICS) and communicate with PXI 7813R board which processes all interlock signals. Results: All interlock signal processing and latched trigger signal output were achieved in the FPGA board. The new system was fully integrated to the main EPICS for the storage ring. And the system runs as expected. Conclusions: The online test data show that the new system can detect the first interlock signal caused by the machine abnormality while the turn-by-turn data are latched. The analysis of turn-by-turn data shows the first BPM electronics which sends the interlock signal. The result is consistent with the FPGA board. Meanwhile, beam orbit changes were observed during beam abortions.