0000000000649025

AUTHOR

E. Moyse

showing 2 related works from this author

Use of an FPGA to identify electromagnetic clusters and isolated hadrons in the ATLAS level-1 calorimeter trigger

2003

Abstract At the full LHC design luminosity of 10 34 cm −2 s −1 , there will be approximately 109 proton–proton interactions per second. The ATLAS level-1 trigger is required to have an acceptance factor of ∼10−3. The calorimeter trigger covers the region |η|⩽5.0, and φ=0 to 2π. The distribution of transverse energy over the trigger phase space is analysed to identify candidates for electrons/photons, isolated hadrons, QCD jets and non-interacting particles. The Cluster Processor of the level-1 calorimeter trigger is designed to identify transverse energy clusters associated with the first two of these. The algorithms based on the trigger tower energies which have been designed to identify s…

PhysicsNuclear and High Energy PhysicsParticle physicsPhotonLarge Hadron ColliderLuminosity (scattering theory)Calorimeter (particle physics)Particle detectorParticle identificationNuclear physicsmedicine.anatomical_structureAtlas (anatomy)Cluster (physics)medicineDetectors and Experimental TechniquesInstrumentationNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
researchProduct

The ATLAS Level-1 Calorimeter Trigger

2008

The ATLAS Level-1 Calorimeter Trigger uses reduced-granularity information from all the ATLAS calorimeters to search for high transverse-energy electrons, photons, tau leptons and jets, as well as high missing and total transverse energy. The calorimeter trigger electronics has a fixed latency of about 1 microsecond, using programmable custom-built digital electronics. This paper describes the Calorimeter Trigger hardware, as installed in the ATLAS electronics cavern.

Digital electronicsPhysicsLarge Hadron ColliderPhysics::Instrumentation and Detectorsbusiness.industryElectrical engineeringIntegrated circuitlaw.inventionCalorimetermedicine.anatomical_structureData acquisitionAtlas (anatomy)lawControl systemmedicineHigh Energy Physics::ExperimentElectronicsDetectors and Experimental TechniquesbusinessInstrumentationMathematical PhysicsJournal of Instrumentation
researchProduct