Euroball III Data Acquisition

Event Collector

The Event Collectors act as a bridge between the data readout bus and the event builder processors. They each collect event fragments for a given number of events (at high rates this would be typically 10K events) to generate a "Super-Event" fragment buffer. The "Super-Event" fragment buffer in all Event Collectors must contain only data from the same Master Trigger events. These buffers will be generated at a rate of not more than 10 per second which will allow all subsequent buffer handling to be performed at non real-time rates and thus allow the use of standard UNIX operating systems.

The Event Collector contains a DSP (Texas TMS 32000) which is mainly used for control of the data readout and counting of events to determine when a "Super-Event" fragment buffer is complete. It can also be used for some data integrity testing.