Particle Tracking with the ATLAS FastTracker

Speaker: Rob Mina

Time: 5:15PM August 23 2017

Location: Kavli, 3rd floor

Abstract

Each year, as accelerator upgrades improve the instantaneous luminosity at the LHC, the number of interactions per beam crossing (or pileup) also increases. Currently, the ATLAS experiment's high-level trigger software performs rudimentary particle tracking for small regions of the detector for its 'Level 2' trigger. The computational cost of tracking increases roughly quadratically with pileup, so a new technique is required. The FastTracKer (FTK) system will perform tracking for the Level 2 trigger using dedicated hardware. I will briefly introduce particle tracking and its uses in particle collider experiments, discuss the FTK tracking implementation, and summarize current related efforts by the Stanford group.