Author :
Adelman, J. ; Annovi, A. ; Aoki, M. ; Bardi, A. ; Bedeschi, F. ; Beiforte, S. ; Bellinger, J. ; Berry, E. ; Bitossi, M. ; Bogdan, M. ; Carlsmith, M. ; Carosi, R. ; Catastini, P. ; Cerri, A. ; Chappa, S. ; Chung, W. ; Ciocci, M.A. ; Crescioli, F. ; Orso, M
Abstract :
The silicon vertex trigger (SVT) in the CDF experiment at Fermilab performs fast and precise track finding and fitting at the second trigger level and has been a crucial element in data acquisition for Run II physics. However as luminosity rises, multiple interactions increase the complexity of events and thus the SVT processing time, reducing the amount of data CDF can record. The SVT upgrade aims to increase the SVT processing power to restore at high luminosity the original CDF DAQ capability. We describe the first steps in the SVT upgrade, consisting of a new associative memory with 4 times the number of patterns, and a new track fitter to take advantage of these patterns. We describe the system, its tests and its performance
Keywords :
data acquisition; memory expansion boards; position sensitive particle detectors; silicon radiation detectors; CDF experiment; Run II physics; associative memory; data acquisition; multiple interactions; second trigger level; silicon vertex trigger; track finding; track fitter; track fitting; Nuclear and plasma sciences; Silicon;
