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Calibration of the CMS Electromagnetic Calorimeter with first LHC data

The first 7 TeV LHC collisions recorded with the CMS detector have been used to perform a channel-by-channel calibration of the electromagnetic calorimeter (ECAL). Decays of $\pi^0$ and $\eta$ into two photons as well as the azimuthal symmetry of the average energy deposition at a given pseudorap...

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Autor principal: Sola, Valentina
Lenguaje:eng
Publicado: 2010
Materias:
Acceso en línea:http://cds.cern.ch/record/1316941
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author Sola, Valentina
author_facet Sola, Valentina
author_sort Sola, Valentina
collection CERN
description The first 7 TeV LHC collisions recorded with the CMS detector have been used to perform a channel-by-channel calibration of the electromagnetic calorimeter (ECAL). Decays of $\pi^0$ and $\eta$ into two photons as well as the azimuthal symmetry of the average energy deposition at a given pseudorapidity are utilized to equalize the response of the individual channels. The ECAL comprises a central {\it barrel} section and two {\it endcaps}. Based on an integrated luminosity of up to 250~nb$^{-1}$, a channel-by-channel {\it in-situ} calibration precision of 0.6\% has been achieved in the barrel ECAL in the pseudorapidity region $\textpipe \eta \textpipe < 0.8$. The energy scale of the ECAL has been investigated and found to agree with the simulation to within 1\% in the barrel and 3\% in the endcaps.
id cern-1316941
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2010
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spelling cern-13169412019-09-30T06:29:59Zhttp://cds.cern.ch/record/1316941engSola, ValentinaCalibration of the CMS Electromagnetic Calorimeter with first LHC dataDetectors and Experimental TechniquesThe first 7 TeV LHC collisions recorded with the CMS detector have been used to perform a channel-by-channel calibration of the electromagnetic calorimeter (ECAL). Decays of $\pi^0$ and $\eta$ into two photons as well as the azimuthal symmetry of the average energy deposition at a given pseudorapidity are utilized to equalize the response of the individual channels. The ECAL comprises a central {\it barrel} section and two {\it endcaps}. Based on an integrated luminosity of up to 250~nb$^{-1}$, a channel-by-channel {\it in-situ} calibration precision of 0.6\% has been achieved in the barrel ECAL in the pseudorapidity region $\textpipe \eta \textpipe < 0.8$. The energy scale of the ECAL has been investigated and found to agree with the simulation to within 1\% in the barrel and 3\% in the endcaps.CMS-CR-2010-165oai:cds.cern.ch:13169412010-10-04
spellingShingle Detectors and Experimental Techniques
Sola, Valentina
Calibration of the CMS Electromagnetic Calorimeter with first LHC data
title Calibration of the CMS Electromagnetic Calorimeter with first LHC data
title_full Calibration of the CMS Electromagnetic Calorimeter with first LHC data
title_fullStr Calibration of the CMS Electromagnetic Calorimeter with first LHC data
title_full_unstemmed Calibration of the CMS Electromagnetic Calorimeter with first LHC data
title_short Calibration of the CMS Electromagnetic Calorimeter with first LHC data
title_sort calibration of the cms electromagnetic calorimeter with first lhc data
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1316941
work_keys_str_mv AT solavalentina calibrationofthecmselectromagneticcalorimeterwithfirstlhcdata