Title :
The ATLAS Trigger System
Author :
Padilla, Cristóbal
Author_Institution :
Inst. de Fis. d´´Altes Energies (IFAE), UAB, Barcelona, Spain
fDate :
4/1/2010 12:00:00 AM
Abstract :
The ATLAS detector at CERN´s Large Hadron Collider (LHC) 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; nuclear electronics; position sensitive particle detectors; ATLAS detector; ATLAS trigger system; CERN Large Hadron Collider; custom-built electronics; data acquisition; proton-proton collisions; trigger level; Collaboration; Computer architecture; Detectors; Elementary particles; Helium; Large Hadron Collider; Mesons; Particle scattering; Physics; Signal design; Data acquisition; detectors; elementary particles; trigger;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2009.2037623
