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Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions

The Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter of ATLAS experiment and has about 10,000 eletronic channels. An Optimal Filter (OF) has been used to estimate the energy sampled by the calorimeter and applies a Quality Factor (QF) for signal acceptance. An approach u...

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Autores principales: Seixas, Jose, Balabram Filho, Luiz Eduardo, Manhaes de Andrade Filho, Luciano, Sotto-Maior-Peralva, Bernardo
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:https://dx.doi.org/10.1088/1742-6596/608/1/012044
http://cds.cern.ch/record/1977453
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author Seixas, Jose
Balabram Filho, Luiz Eduardo
Manhaes de Andrade Filho, Luciano
Sotto-Maior-Peralva, Bernardo
author_facet Seixas, Jose
Balabram Filho, Luiz Eduardo
Manhaes de Andrade Filho, Luciano
Sotto-Maior-Peralva, Bernardo
author_sort Seixas, Jose
collection CERN
description The Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter of ATLAS experiment and has about 10,000 eletronic channels. An Optimal Filter (OF) has been used to estimate the energy sampled by the calorimeter and applies a Quality Factor (QF) for signal acceptance. An approach using Matched Filter (MF) has also been pursued. In order to cope with the luminosity rising foreseen for LHC operation upgrade, different algorithms have been developed. Currently, the OF measure for signal acceptance is implemented through a chi-square test. At a low luminosity scenario, such QF measure has been used as a way to describe how the acquired signal is compatible to the pulse shape pattern. However, at high-luminosity conditions, due to pile up, this QF acceptance is no longer possible when OF is employed, and the QF becomes a measure to indicate whether the reconstructed signal suffers or not from pile up. Methods are being developed in order to recover the superposed information, and the QF may be used again as signal acceptance measure. In this work, a new QF measure is introduced. It is based on divergence statistics, which measures the similarity of probability density functions. The QF measures are compared for high-luminosity Monte Carlo data.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
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spelling cern-19774532019-09-30T06:29:59Zdoi:10.1088/1742-6596/608/1/012044http://cds.cern.ch/record/1977453engSeixas, JoseBalabram Filho, Luiz EduardoManhaes de Andrade Filho, LucianoSotto-Maior-Peralva, BernardoQuality Factor for the Hadronic Calorimeter in High Luminosity ConditionsParticle Physics - ExperimentThe Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter of ATLAS experiment and has about 10,000 eletronic channels. An Optimal Filter (OF) has been used to estimate the energy sampled by the calorimeter and applies a Quality Factor (QF) for signal acceptance. An approach using Matched Filter (MF) has also been pursued. In order to cope with the luminosity rising foreseen for LHC operation upgrade, different algorithms have been developed. Currently, the OF measure for signal acceptance is implemented through a chi-square test. At a low luminosity scenario, such QF measure has been used as a way to describe how the acquired signal is compatible to the pulse shape pattern. However, at high-luminosity conditions, due to pile up, this QF acceptance is no longer possible when OF is employed, and the QF becomes a measure to indicate whether the reconstructed signal suffers or not from pile up. Methods are being developed in order to recover the superposed information, and the QF may be used again as signal acceptance measure. In this work, a new QF measure is introduced. It is based on divergence statistics, which measures the similarity of probability density functions. The QF measures are compared for high-luminosity Monte Carlo data.ATL-TILECAL-PROC-2014-024oai:cds.cern.ch:19774532014-12-17
spellingShingle Particle Physics - Experiment
Seixas, Jose
Balabram Filho, Luiz Eduardo
Manhaes de Andrade Filho, Luciano
Sotto-Maior-Peralva, Bernardo
Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions
title Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions
title_full Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions
title_fullStr Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions
title_full_unstemmed Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions
title_short Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions
title_sort quality factor for the hadronic calorimeter in high luminosity conditions
topic Particle Physics - Experiment
url https://dx.doi.org/10.1088/1742-6596/608/1/012044
http://cds.cern.ch/record/1977453
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