The VEPP-4 Control System

A. Aleshaev, A. Batrakov, S. Belov, A. Dubrovin, Y. Ejdelman,
A. Kalinin, S. Karnaev, M. Kollegov, V. Kozak, E. Kuper,
A. Ledenev, B. Levichev, Sv. Mishnev, A. Naumenkov, G. Pioskunov,
I. Protopopov, D. Shatilov, E. Simonov, V. Smaljuk,
A. Smirnov, S. Tararishkin, Io. Zaroudnev
INP Novosibirsk


VEPP-4 accelerator facility consists of a 350 MeV electron/positron injector, a 2 GeV storage ring VEPP-3 and a 6 GeV collider VEPP-4M. The VEPP-4 control system includes twelve CAMAC embedded 24-bit in-house developed computers ODRENOK, interconnected in a star network. The central node supports inter-task communications and file server functions. Real time interactions between some computers are based on point-to-point interfaces. Equipment control electronics is implemented mostly in CAMAC (nearly 60 crates). Multitasking real time in-house developed OS allows to run up to 10 tasks with fast dynamic change of core image. The control of VEPP-4 is provided by simultaneously processing more than 50 tasks. PC's are used as operator consoles, for data processing, as printer servers, and back-up system as well.