A trigger track processor, called the eXtremely Fast Tracker
(XFT), has been designed for the CDF upgrade. This processor identifies
high transverse momentum (> 1.5 GeV/c) charged particles in the new central
outer tracking chamber for CDF II. The XFT design is highly parallel to
handle the input rate of 183 Gbits/s and output rate of 44 Gbits/s. The
processor is pipelined and reports the result for a new event every 132 ns.
The processor uses three stages: hit classification, segment finding, and
segment linking. The pattern recognition algorithms for the three stages
are implemented in programmable logic devices (PLDs) which allow in-situ
modification of the algorithm at any time. The PLDs reside on three
different types of modules. The complete system has been installed and
commissioned at CDF II. An overview of the track processor and performance
in CDF Run II are presented.
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Updated: Tuesday, 2002 July 09 14:03:45 CDT automatically from input from Carol Picciolo