Abstract
The Fast Tracker (FTK) is an integral part of the trigger upgrade program of the ATLAS detector at the Large Hadron Collider (LHC). As the LHC luminosity approaches its design level of 1034 cm−2s−1, the combinatorial problem posed by charged particle tracking becomes increasingly difficult due to the swelling of multiple interactions per bunch crossing. The FTK is a highly-parallel hardware system intended to provide high-quality tracks with transverse momentum above 1 GeV in real time for online trigger system. The FTK system's design, based on a mixture of advanced technologies, and the expected physics performance will be presented.
Highlights
Pixel and SCT Detector Fast Tracker (FTK) : on-line hardware tracking system for ATLAS upgrade.Calo Muon Pixel/SCT LVL1 TriggerNo Tracking info. in LVL1 decision! ROD ROD ROD FTK ROB ROB ROB LVL2 CPU Farm
FTK reconstructs all track with PT>1 GeV/c for Level 1 accepted events and provide track information at the beginning of level 2 trigger processing
Pattern matching at limited resolution to reduce the number of required patterns
Summary
FTK reconstructs all track with PT>1 GeV/c for Level 1 accepted events and provide track information at the beginning of level 2 trigger processing. Difficult task 25 ns inter-bunch space and ~70 pile-up in highest luminosity run
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