The existing three-level ATLAS trigger system is deployed to reduce the event rate from the bunch crossing rate of 40 MHz to ∼200 Hz for permanent storage at the LHC luminosity of 1034 cm^−2 s^−1 . When the LHC exceeds the design luminosity, the load on the Level-2 trigger system will significantly increase due both to the need for more sophisticated algorithms to suppress background and the larger event sizes. The Fast Tracker is a proposed upgrade to the current ATLAS trigger system that will operate at the full Level-1 accepted rate of 100 kHz and provide high quality tracks at the beginning of processing in the Level-2 trigger, by performing track reconstruction in hardware with massive parallelism of associative memories. The concept design is being advanced and justified with the performance in important physics areas, b-tagging, τ-tagging and lepton isolation. The prototyping with current technology is underway and R&D with new technologies has been started.

Enhancement of the ATLAS trigger system with a hardware tracker finder FTK / A. Andreani, A. Andreazza, A. Annovi, M. Beretta, V. Bevacqua, M. Bogdan, E. Bossini, A. Boveia, F. Canelli, Y. Cheng, M. Citterio, F. Crescioli, M. Dell'Orso, G. Drake, M. Dunford, J.F. Genat, P. Giannetti, F. Giorgi, J. Hoff, A. Kapliy, M. Kasten, Y.K. Kim, N. Kimura, A. Lanza, V. Liberali, T. Liu, A. Mccarn, C. Melachrinos, C. Meroni, A. Negri, M. Neubauer, M. Piendibene, J. Proudfoot, G. Punzi, M. Riva, F. Sabatini, I. Sacco, L. Sartori, M. Shochet, A. Stabile, F. Tang, A. Todri, R. Tripiccione, J. Tuggle, V. Vercesi, M. Villa, R.A. Vitullo, G. Volpi, J. Wu, K. Yorita, J. Zhang. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 5:12(2010 Dec), pp. C12037.C12037.1-C12037.C12037.5. ((Intervento presentato al convegno Topical workshop on electronics for particle physics : TWEPP tenutosi a Aachen nel 2010 [10.1088/1748-0221/5/12/C12037].

Enhancement of the ATLAS trigger system with a hardware tracker finder FTK

A. Andreani
Primo
;
A. Andreazza
Secondo
;
V. Liberali;M. Riva;A. Stabile;
2010

Abstract

The existing three-level ATLAS trigger system is deployed to reduce the event rate from the bunch crossing rate of 40 MHz to ∼200 Hz for permanent storage at the LHC luminosity of 1034 cm^−2 s^−1 . When the LHC exceeds the design luminosity, the load on the Level-2 trigger system will significantly increase due both to the need for more sophisticated algorithms to suppress background and the larger event sizes. The Fast Tracker is a proposed upgrade to the current ATLAS trigger system that will operate at the full Level-1 accepted rate of 100 kHz and provide high quality tracks at the beginning of processing in the Level-2 trigger, by performing track reconstruction in hardware with massive parallelism of associative memories. The concept design is being advanced and justified with the performance in important physics areas, b-tagging, τ-tagging and lepton isolation. The prototyping with current technology is underway and R&D with new technologies has been started.
Trigger concepts and systems (hardware and software); Digital electronic circuits
Settore FIS/01 - Fisica Sperimentale
Settore ING-INF/01 - Elettronica
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/152161
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