Abstract
Three spare modules of the ATLAS Tile Calorimeter were exposed to test beams from the Super Proton Synchrotron accelerator at CERN in 2017. The detector’s measurements of the energy response and resolution to positive pions and kaons, and protons with energies ranging from 16 to 30 GeV are reported. The results have uncertainties of a few percent. They were compared to the predictions of the Geant4-based simulation program used in ATLAS to estimate the response of the detector to proton-proton events at the Large Hadron Collider. The determinations obtained using experimental and simulated data agree within the uncertainties.
Highlights
Three spare modules of the Tile Calorimeter (TileCal) of the ATLAS experiment [1], two long-barrels and one extendedbarrel, were exposed to muon, electron pion, kaon and proton beams with different energies and incident angles at test beams (TBs) in 2017 [2].The role of the hadron calorimeter in ATLAS is to measure the energy and the angle of isolated hadrons and jets
The energy deposited by the beam particles incident the detector, Eraw, was determined as the sum of the energy measured in the calorimeter cells
The results presented in this paper extend the energy range of the determinations of the ratio of the responses and resolutions of protons and pions down to 16 GeV; previous results obtained by ATLAS Collaboration considered beams above 50 GeV [12]
Summary
Three spare modules of the Tile Calorimeter (TileCal) of the ATLAS experiment [1], two long-barrels and one extendedbarrel, were exposed to muon, electron pion, kaon and proton beams with different energies and incident angles at test beams (TBs) in 2017 [2]. The role of the hadron calorimeter in ATLAS is to measure the energy and the angle of isolated hadrons and jets. The study of the sub-detector response to isolated hadrons is important. The measurements of the calorimeter response and resolution to positive pion and kaon, and proton beams with energies ranging from 16 to 30 GeV are presented.
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