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

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 design 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.
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https://hal-lirmm.ccsd.cnrs.fr/lirmm-01973463
Contributor : Aida Todri-Sanial <>
Submitted on : Tuesday, January 8, 2019 - 12:22:58 PM
Last modification on : Wednesday, December 11, 2019 - 1:32:02 AM

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A. Andreani, A. Andreazza, A. Annovi, M. Beretta, V. Bevacqua, et al.. Enhancement of the ATLAS trigger system with a hardware tracker finder FTK. Journal of Instrumentation, IOP Publishing, 2010, 5, ⟨10.1088/1748-0221/5/12/C12037⟩. ⟨lirmm-01973463⟩

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