An Analysis of the RD27 Level-1 Prototype Calorimeter Trigger Processor Test Beam Data

An analysis of data from a beam test of RD27's prototype, first-level calorimeter trigger processor is presented. The data were taken in collaboration with the RD3 liquid Argon ''Accordion'' electromagnetic calorimeter group at CERN from 20 April to 08 May 1993. The fluctuations in the pedestals are investigated, from run to run, from event to event within a selected run, and within single events in that run. The major features can often be explained by the hardware configuration, especially changes to it. A significant cross-talk is found in the run which is analysed event-by-event. It affects all trigger channels connected to the calorimeter. Additionally, the trigger output is briefly studied. The present analysis was done as part of the CERN Summer Student Programme 1993. It was supervised by Nick Ellis.