BEPC II control system

The BEPCII project is for upgrading the Beijing Electron Positron Collider to reach a higher luminosity. BEPCII is designed as micro-P plus multi-bunches with double rings and has adopted cryogenic superconducting technology. The BEPCII control system is a distributed system based on EPICS. In the past few years, we went through the design stage, R&D stage, development stage and the system will be installated. The BEPCII machine commissioning with beam will start in October 2006. This paper describes the BEPCII control system and the progress of its development.