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Abstract
The goal of the INFN-RETINA R&D project is to develop and implement a computational methodology that allows to reconstruct events with a large number (> 100) of charged-particle tracks in pixel and silicon strip detectors at 40 MHz, thus matching the requirements for processing LHC events at the full bunch-crossing frequency. Our approach relies on a parallel pattern-recognition algorithm, dubbed artificial retina, inspired by the early stages of image processing by the brain. In order to demonstrate that a track-processing system based on this algorithm is feasible, we built a sizable prototype of a tracking processor tuned to 3 000 patterns, based on already existing readout boards equipped with Altera Stratix III FPGAs. The detailed geometry and charged-particle activity of a large tracking detector currently in operation are used to assess its performances. We report on the test results with such a prototype.
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Details
1 Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa, Italy
2 Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa, Italy; Scuola Normale Superiore, I-56127 Pisa, Italy
3 Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56127 Pisa, Italy; Università di Pisa, I-56127 Pisa, Italy
4 Fermi National Accelerator Laboratory, Batavia, IL 60510-5011, USA
5 Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34149 Trieste, Italy