Title :
Electronics of the ATLAS Liquid Argon calorimeter and its precision calibration
Author_Institution :
Dept. of Phys., SMU, Dallas, TX, USA
Abstract :
The Liquid Argon sampling calorimeter is a key detector component in the ATLAS experiment at the LHC, designed to provide precision measurements of electrons, photons, jets and missing transverse energy. In this note we present the detector readout electronics system and its precision calibration. The system has 182,468 channels with more than 16-bit dynamic range. The contribution to the relative energy resolution constant term due to the calibration uncertainty is below 0.25%. The radiation tolerant optical link between the detector front-end and the data acquisition back-end is also discussed.
Keywords :
calibration; data acquisition; electron detection; measurement uncertainty; nuclear electronics; particle calorimetry; position sensitive particle detectors; readout electronics; ATLAS experiment; ATLAS liquid argon sampling calorimeter; LHC; calibration uncertainty; data acquisition; electron measurement; jets measurement; photons measurement; radiation tolerant optical link; readout electronics system; Argon; Calibration; Detectors; Dynamic range; Electrons; Energy measurement; Energy resolution; Large Hadron Collider; Readout electronics; Sampling methods;
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.2009.5321945
