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A new method for calibrating the hadron response of a segmented calorimeter is developed and successfully applied to beam test data. It is based on a principal component analysis of energy deposits in the calorimeter layers, exploiting longitudinal shower development information to improve the measured energy resolution. Corrections for invisible hadronic energy and energy lost in dead material in front of and between the calorimeters of the ATLAS experiment were calculated with simulated Geant4 Monte Carlo events and used to reconstruct the energy of pions impinging on the calorimeters during the 2004 Barrel Combined Beam Test at the CERN H8 area. For pion beam...
free text keywords: Pattern recognition, cluster finding, calibration and fitting methods, calorimeter methods ; pattern recognition ; cluster finding ; calibration and fitting methods ; calorimeters ; detector modelling and simulations, Physics - Instrumentation and Detectors, Partícules (Física nuclear), Science & Technology, Settore FIS/01 - Fisica Sperimentale, Settore FIS/04 - Fisica Nucleare e Subnucleare, High Energy Physics - Experiment, Física nuclear, Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc), Calorimeter methods, Calorimeters
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Article . 2016
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