Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC

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The TileCal is the hadronic calorimeter covering the most central region of the ATLAS experiment at LHC. It is a sampling calorimeter with iron plates as absorber and plastic scintillating tiles as the active material. The scintillation light produced by the passage of charged particles is transmitt...

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Autor principal: Boumediene, D
Lenguaje:eng
Publicado: 2014
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1088/1742-6596/587/1/012009
http://cds.cern.ch/record/1702640
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author Boumediene, D
author_facet Boumediene, D
author_sort Boumediene, D
collection CERN
description The TileCal is the hadronic calorimeter covering the most central region of the ATLAS experiment at LHC. It is a sampling calorimeter with iron plates as absorber and plastic scintillating tiles as the active material. The scintillation light produced by the passage of charged particles is transmitted by wavelength shifting fibers to about 10000 photomultiplier tubes (PMTs). Integrated to the calorimeter, there is a composite device that allows to monitor and/or equalize the signals at various stages of their formation. This device is based on signal generation from different sources: radioactive, Laser, charge injection and minimum bias events produced in proton-proton collisions. Recent performances of these systems as well TileCal calibration stability are presented.
id cern-1702640
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
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spelling cern-17026402022-08-10T13:06:07Zdoi:10.1088/1742-6596/587/1/012009http://cds.cern.ch/record/1702640engBoumediene, DCalibration of the Tile Hadronic Calorimeter of ATLAS at LHCParticle Physics - ExperimentThe TileCal is the hadronic calorimeter covering the most central region of the ATLAS experiment at LHC. It is a sampling calorimeter with iron plates as absorber and plastic scintillating tiles as the active material. The scintillation light produced by the passage of charged particles is transmitted by wavelength shifting fibers to about 10000 photomultiplier tubes (PMTs). Integrated to the calorimeter, there is a composite device that allows to monitor and/or equalize the signals at various stages of their formation. This device is based on signal generation from different sources: radioactive, Laser, charge injection and minimum bias events produced in proton-proton collisions. Recent performances of these systems as well TileCal calibration stability are presented.The Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter of the ATLAS experiment. The TileCal provides important information for reconstruction of hadrons, jets, hadronic decays of tau leptons and missing transverse energy. This sampling calorimeter uses iron plates as absorber and scintillating tiles as active medium. The light produced by the passage of charged particles is transmitted by means of wavelength shifting fibers to photomultiplier tubes (PMTs). The TileCal readout is segmented into about 5000 cells (longitudinally and transversally), each of them being read by two PMTs. A brief description of the individual calibration systems (Cs radioactive source, laser, charge injection, minimum bias) is provided. Their combination allows to calibrate each part of the data acquisition chain (optical part, photomultiplier, readout electronics) and to monitor its stability to better than 1%. The procedure for setting and preserving the electromagnetic energy scale during Run 1 data taking is discussed. The issues of linearity and stability of the response, as well as the timing adjustment are also shown.ATL-TILECAL-PROC-2014-001oai:cds.cern.ch:17026402014-05-19
spellingShingle Particle Physics - Experiment
Boumediene, D
Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC
title Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC
title_full Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC
title_fullStr Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC
title_full_unstemmed Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC
title_short Calibration of the Tile Hadronic Calorimeter of ATLAS at LHC
title_sort calibration of the tile hadronic calorimeter of atlas at lhc
topic Particle Physics - Experiment
url https://dx.doi.org/10.1088/1742-6596/587/1/012009
http://cds.cern.ch/record/1702640
work_keys_str_mv AT boumediened calibrationofthetilehadroniccalorimeterofatlasatlhc

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