Title :
The ATLAS trigger system
Author_Institution :
Inst. de Fis. d´´Altes Energies (IFAE), UAB, Barcelona, Spain
Abstract :
The ATLAS detector at CERN´s Large Hadron Collider will be exposed to proton-proton collisions at a rate of 40 MHz. A three-level trigger system has been designed to select potentially interesting events and reduce the incoming rate to about 200 Hz of storage rate. The first trigger level is implemented in custom-built electronics; the second and third levels are realized in software. In this paper, the trigger system, its design parameters and results from the LHC run in 2008 are described.
Keywords :
data acquisition; drift chambers; high energy physics instrumentation computing; nuclear electronics; position sensitive particle detectors; trigger circuits; ATLAS detector; ATLAS trigger system; CERN´s Large Hadron Collider; LHC; custom-built electronics; data acquisition; design parameters; proton-proton collisions; three-level trigger system; Detectors; Large Hadron Collider; Data Acquisition; Detectors; Elementary Particles; Trigger;
Conference_Titel :
Real Time Conference, 2009. RT '09. 16th IEEE-NPSS
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4454-0
DOI :
10.1109/RTC.2009.5321724
