CONTROL-SYSTEM FOR SCALABLE EXPERIMENTS AT COSY

The Data Acquisition for experiments at the KFA Juelich COoler SYnchro tron COSY is based on VME, FASTBUS, CAMAC, VICbus, Ethernet and UNIX w orkstations. Controller and master, equipped with CPUs, VME CPUs and w orkstations are formed to a distributed processor system, in software arranged by the object oriented Experiment Message Specification (EMS) protocol according to the server client connectivity. To perform the control of various experiment arrangements, composed of different numb er of crates with many embedded modules, a Control System, running on workstations was developed. Configurable setup of the frontend, run co ntrol, and distribution and decoding of event data are involved in the system. Experiment customizing is performed by ASCII files in an easy manner. The software is structured by dedicated clients with OSF/Moti f user interface and access to the configurable experiment database. T he design and state of the control system will be presented.