6533b7d7fe1ef96bd1268ce6

RESEARCH PRODUCT

L0 trigger for the EMCal detector of the ALICE experiment

Jiri KralTerry C AwesJan RakHans MullerJ. Schambach

subject

PhysicsNuclear and High Energy PhysicsLarge Hadron ColliderPhotonPhysics::Instrumentation and DetectorsDetectorParticle acceleratorlaw.inventionCalorimeterNuclear physicsElectromagnetic calorimeterlawSliding window protocolHigh Energy Physics::ExperimentALICE (propellant)Nuclear ExperimentInstrumentation

description

Abstract The ALICE experiment at the CERN Large Hadron Collider (LHC) accelerator was designed to study ultra-relativistic heavy-ion collisions. The ALICE Electromagnetic Calorimeter (EMCal) was built to provide measurement of photons, electrons, and jets, and trigger selection of hard-QCD events containing them. The EMCal single-shower L0 trigger, which triggers on large energy deposit within a 4×4 tower sliding window, became operational in 2010. The implementation of the real-time FPGA based algorithm optimized to provide a fast L0 decision is presented.

https://doi.org/10.1016/j.nima.2012.06.065