Open AccessThe response of the ATLAS Tile calorimeter to pions and protons in test beam and in GEANT4 Monte Carlo simulation
Author(s) -
M. Simonyan
Publication year - 2009
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/160/1/012074
Subject(s) - monte carlo method , atlas (anatomy) , nuclear physics , tile , physics , pion , calorimeter (particle physics) , beam (structure) , large hadron collider , statistical physics , materials science , optics , geology , mathematics , paleontology , statistics , detector , composite material
International audienceThe response of the ATLAS Tile Calorimeter to pions and protons in the energy range of 20 to 180 GeV produced at CERN's Super Proton Synchrotron (SPS) H8 test beam line has been measured. The experimental setup allowed to measure the longitudinal development for pion and proton induced showers up to 20 nuclear interaction lengths. It is found that pion showers penetrate deeper in the calorimeter than the proton induced ones. However, protons induce showers that are wider laterally to the direction of the impinging particle. Including the measured total energy response and the resolution, all observations are consistent with a higher electromagnetic energy fraction in pion induced showers. The data are compared with GEANT4 simulations using several hadronic interaction models