Description:

Title: The Upgraded CMS Calorimeter Trigger for LHC Run II

Speaker: Leonard Apanasevich, Fermilab
 

Abstract: The Large Hadron Collider (LHC) at CERN is preparing for the physics program for Run 2. The center-of-mass energy has risen from 8 to 13 TeV and the instantaneous luminosity is expected to approach 2e34 Hz/cm^2. To guarantee a successful and ambitious physics program in this intense environment, the CMS trigger and data acquisition system must be upgraded. In particular the L1 calorimeter trigger hardware from Run-1 is being replaced with an entirely new system which is based on high performance Xilinx Virtex-7 FPGAs and will contain hundreds of high-speed optical links operating at up to 10 Gb/s to maximize data throughput. In this talk we present an overview of the optimisation of the trigger algorithms and the specific techniques developed to cope with the high event rates expected in Run 2. The performance gains in terms of rates and efficiencies of the upgraded CMS calorimeter trigger will also be discussed.