The CMS Tracker Readout Front End Driver

Details The CMS Tracker Readout Front End Driver The CMS Tracker Readout Front End Driver

2005-10-25

arxiv.org/abs/physics/0510229v1

IEEETrans.Nucl.Sci.52:2836-2840,2005

Physics

Instrumentation and Detectors

Scientific paper

10.1109/TNS.2005.860173

The Front End Driver, FED, is a 9U 400mm VME64x card designed for reading out the Compact Muon Solenoid, CMS, silicon tracker signals transmitted by the APV25 analogue pipeline Application Specific Integrated Circuits. The FED receives the signals via 96 optical fibers at a total input rate of 3.4 GB/sec. The signals are digitized and processed by applying algorithms for pedestal and common mode noise subtraction. Algorithms that search for clusters of hits are used to further reduce the input rate. Only the cluster data along with trigger information of the event are transmitted to the CMS data acquisition system using the S-LINK64 protocol at a maximum rate of 400 MB/sec. All data processing algorithms on the FED are executed in large on-board Field Programmable Gate Arrays. Results on the design, performance, testing and quality control of the FED are presented and discussed.

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