与控制系统的接口通过EPICS Shared Memory IOC core技术实现。实验室测试及仿真结果表明该系统直流流强测量分辨率可达2微安
束流寿命相对测量精度可望达到0.5%。
Abstract
A precise DC current transformer (DCCT) system is a must for commissioning and operation of the storage ring of Shanghai Synchrotron Radiation Facility (SSRF). Hardware of the system to be completed consists of a Bergoz NPCT sensor
a NI PXI digital voltage meter and a PXI controller. The software was developed on LabVIEW platform to communicate with accelerator control system via EPICS Shared Memory IOCcore interface. Bench test and simulation results of the DCCT showed that 2μA resolution for DC current measurement and 0.5% relative accuracy for beam lifetime measurement could be achieved.