CONTROL SYSTEM OF VEPP-2000 COLLIDER (SOFTWARE, HARDWARE)

Electron-positron collider VEPP-2000 is under commissioning at Budker Institute of Nuclear Physics. The paper presents architecture, implementation and functionality of the software of the collider control system. The software according to hardware system consists of interacting subsystems responding on different acceleration facility parts. Control system software is based on several TCP/IP connected PC platforms working under operating system Linux and uses client-server techniques. The paper describes implementation, operating possibilities and perspectives of VEPP-2000 software. The paper also presents structure, architecture and implementation of the hardware of the collider control system. The system consists of pulse-elements, steering coils power supplies, high-current main field power supply, RF subsystems and some other special subsystems (such as vacuum, temperature, etc.). The system is based on modern industrial protocol CAN-bus and specialized electronic BINP manufactured devices according the standard. The paper describes implementation of different subsystems based on CANbus devices, and operating characteristics and possibilities. VEPP-2000 PROJECT Since the end of 1974 the e+e- collider VEPP-2M in Novosibirsk has been successfully running in the c.m. energy range from threshold of hadron production up to 1.4 GeV. The integrated luminosity of about 74pb -1 was collected with two modern detectors SND and CMD-2 allowing precise measurements of most of the hadronic channels of e+e- annihilation. VEPP-2000 project is a further development of the facility dedicated to improve the luminosity and in the same time increase the maximum attainable energy up to 2GeV, that will significantly broaden the potential of experiments performed at the collider. Moreover this ring will allow to check the concept of round colliding beams [1]. VEPP-2000 HARDWARE From the point of view of automation accelerator complex VEPP-2000 is a complicated system. Over than 500 control channels and 1000 monitoring channels and their joint usage apply rigid restriction on control system. Acceleration complex VEPP-2000 consists of 5 subsystems: ILU and channel to B-3M, B-3M and channel to BEP, BEP ring, electron and positron channels from BEP to VEPP-2000, VEPP-2000 ring. Each of subsystems includes several sub subsystems: pulse elements, steady elements, RF-systems, and some additional systems like vacuum and temperature monitoring. Control system of VEPP-2000 complex is based on several PC platforms under Linux operating system, connected into VEPP-2000 private net. Layout of automation system of VEPP-2000 collider is presented on Figure 2.