Data Acquisition and Management in BEPC

X. Geng, J. Zhao, Y. Yan, Y. Yu, H. Luo, W. Liu, J. Xu
Institute of High Energy Physics, Chinese Academy of Sciences
Beijing, China


This paper describes a method in upgrading of the BEPC control system, that the dedicated adapter VAX-CAMAC-Channel (VCC) was replaced by a commercial adapter KSC2922/399, Qbus CAMAC interface. All low level I/O driver routines have been changed without changing whole CAMAC hardware system. The upgraded control system adopts a distribution architecture, and several hierarchical databases are installed in FEC computers, so the data flow should be controlled. Once raw data in any node have been refreshed, the changes will be transferred to other nodes to keep uniformity of the data in those databases.