A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test

A new method for calibrating the hadron response of a segmented calorimeter is developed. It is based on a principal component analysis of the calorimeter layer energy deposits, exploiting longitudinal shower development information to improve the measured energy resolution. Corrections for invisibl...

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Autor principal: Grahn, Karl-Johan
Lenguaje:eng
Publicado: 2009
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1109/NSSMIC.2009.5402211
http://cds.cern.ch/record/1222464
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author Grahn, Karl-Johan
author_facet Grahn, Karl-Johan
author_sort Grahn, Karl-Johan
collection CERN
description A new method for calibrating the hadron response of a segmented calorimeter is developed. It is based on a principal component analysis of the calorimeter layer energy deposits, 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 ATLAS calorimeters 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 beams with energies between 20 and 180 GeV, the particle energy is reconstructed within 3% and the energy resolution is improved by about 20% compared to the electromagnetic scale.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2009
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spelling cern-12224642021-05-03T20:07:54Zdoi:10.1109/NSSMIC.2009.5402211http://cds.cern.ch/record/1222464engGrahn, Karl-JohanA Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam TestDetectors and Experimental TechniquesA new method for calibrating the hadron response of a segmented calorimeter is developed. It is based on a principal component analysis of the calorimeter layer energy deposits, 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 ATLAS calorimeters 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 beams with energies between 20 and 180 GeV, the particle energy is reconstructed within 3% and the energy resolution is improved by about 20% compared to the electromagnetic scale.A new method for calibrating the hadron response of a segmented calorimeter is developed. It is based on a principal component analysis of the calorimeter layer energy deposits, 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 ATLAS calorimeters 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 beams with energies between 20 and 180 GeV, the particle energy is reconstructed within 3% and the energy resolution is improved by about 20% compared to the electromagnetic scale.A new method for calibrating the hadron response of a segmented calorimeter is developed. It is based on a principal component analysis of the calorimeter layer energy deposits, 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 ATLAS calorimeters 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 beams with energies between 20 and 180 GeV, the particle energy is reconstructed within 3% and the energy resolution is improved by about 20% compared to the electromagnetic scale.arXiv:0911.2639oai:cds.cern.ch:12224642009-11-16
spellingShingle Detectors and Experimental Techniques
Grahn, Karl-Johan
A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
title A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
title_full A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
title_fullStr A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
title_full_unstemmed A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
title_short A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
title_sort layer correlation technique for pion energy calibration at the 2004 atlas combined beam test
topic Detectors and Experimental Techniques
url https://dx.doi.org/10.1109/NSSMIC.2009.5402211
http://cds.cern.ch/record/1222464
work_keys_str_mv AT grahnkarljohan alayercorrelationtechniqueforpionenergycalibrationatthe2004atlascombinedbeamtest
AT grahnkarljohan layercorrelationtechniqueforpionenergycalibrationatthe2004atlascombinedbeamtest

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