THE TRIGGER SYSTEM OF THE FIRST CMS TRACKER BEAM TESTS

The trigger for the first compact muon solenoid (CMS) tracking beam te sts is a dedicated system for analog multiplexed front-end electronics . With this first generation of electronics dedicated to CMS tracker d etectors, some new specific development was necessary to read it with a multicrate distributed Data AcQuisition (DAQ) system. The goal of th is development was to reach a high scalability of experiment subsystem s and a good robustness for test beams. Each subsystem had to be indep endent from the others, both from the hardware and software point of v iew. Remote control software for this system as well as further monito ring facilities were the required functions of the trigger system.