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Performance of the ALICE Electromagnetic Calorimeter - Acharya, Shreyasi et al - arXiv:2209.04216CERN-EP-2022-184
 
Schematic view of the \gls{EMCal} (left) illustrating the module position on two approximately opposite locations in azimuth. The \gls{PHOS} calorimeter inside the \gls{DCal} is indicated in brown. The right figure shows a cross section of the \gls{ALICE} barrel detectors.
Schematic view of the \gls{EMCal} (left) illustrating the module position on two approximately opposite locations in azimuth. The \gls{PHOS} calorimeter inside the \gls{DCal} is indicated in brown. The right figure shows a cross section of the \gls{ALICE} barrel detectors.
Schematic view of the \gls{EMCal} (left) illustrating the module position on two approximately opposite locations in azimuth. The \gls{PHOS} calorimeter inside the \gls{DCal} is indicated in brown. The right figure shows a cross section of the \gls{ALICE} barrel detectors.
Schematic view of the \gls{EMCal} (left) illustrating the module position on two approximately opposite locations in azimuth. The \gls{PHOS} calorimeter inside the \gls{DCal} is indicated in brown. The right figure shows a cross section of the \gls{ALICE} barrel detectors.
Photo and drawing of \gls{EMCal} module showing all components.
Photo and drawing of \gls{EMCal} module showing all components.
Schematic view of the \gls{EMCal} full-size super modules (\glspl{SM}) illustrating the strip structure made of 24 strips.
Schematic view of the \gls{EMCal} full-size super modules (\glspl{SM}) illustrating the strip structure made of 24 strips.
(Color online) \gls{EMCal} full-size (\gls{SM}) in the $(\eta,\varphi)$ plane including visualizations of sub-components and their tower coverage.
(Color online) \gls{EMCal} full-size (\gls{SM}) in the $(\eta,\varphi)$ plane including visualizations of sub-components and their tower coverage.
Geometric overview of the \gls{EMCal} and \gls{DCal} detectors in the $\eta$-$\varphi$ plane. The drawing outlines the full \gls{LHC} Run 2 setup with all 20 \glspl{SM} as well as the \gls{PHOS} detector in the \gls{DCal} gap.
Geometric overview of the \gls{EMCal} and \gls{DCal} detectors in the $\eta$-$\varphi$ plane. The drawing outlines the full \gls{LHC} Run 2 setup with all 20 \glspl{SM} as well as the \gls{PHOS} detector in the \gls{DCal} gap.
(Color online) Schematic view of the \gls{ALICE} \gls{EMCal} mini-module at the \gls{PS} T10 beam line. The beam enters from the right. The Cherenkov detector was used for identification of the beam particle. The mini-module could be moved in the directions indicated by the red arrows in order to scan different towers.
(Color online) Schematic view of the \gls{ALICE} \gls{EMCal} mini-module at the \gls{PS} T10 beam line. The beam enters from the right. The Cherenkov detector was used for identification of the beam particle. The mini-module could be moved in the directions indicated by the red arrows in order to scan different towers.
(Color online) Schematic view of the \gls{ALICE} \gls{EMCal} mini-module at the \gls{SPS} H4 beam line. The beam enters from the right. The mini-module could be moved in the directions indicated by the red arrows in order to scan different towers.
(Color online) Schematic view of the \gls{ALICE} \gls{EMCal} mini-module at the \gls{SPS} H4 beam line. The beam enters from the right. The mini-module could be moved in the directions indicated by the red arrows in order to scan different towers.
(Color online) Left: Measured pulse amplitude~($A_{\rm out}$) as a function of input pulse amplitude obtained from laboratory measurements. The dashed gray line indicates the case of a linear shaper. Right: Comparison of laboratory measurements with the \gls{TB} data on missing energy~($E_{\rm miss}$) as a function of the measured energy.
(Color online) Left: Measured pulse amplitude~($A_{\rm out}$) as a function of input pulse amplitude obtained from laboratory measurements. The dashed gray line indicates the case of a linear shaper. Right: Comparison of laboratory measurements with the \gls{TB} data on missing energy~($E_{\rm miss}$) as a function of the measured energy.
(Color online) Left: Measured pulse amplitude~($A_{\rm out}$) as a function of input pulse amplitude obtained from laboratory measurements. The dashed gray line indicates the case of a linear shaper. Right: Comparison of laboratory measurements with the \gls{TB} data on missing energy~($E_{\rm miss}$) as a function of the measured energy.
(Color online) Left: Measured pulse amplitude~($A_{\rm out}$) as a function of input pulse amplitude obtained from laboratory measurements. The dashed gray line indicates the case of a linear shaper. Right: Comparison of laboratory measurements with the \gls{TB} data on missing energy~($E_{\rm miss}$) as a function of the measured energy.
(Color online) Left: energy distribution of single cell clusters obtained from scans with a 6 GeV muon-beam. Right: energy distribution of clusters obtained from scans with a 6~GeV electron beam. For both cases the data are shown with black markers and compared with the predictions from \gls{MC} simulations with \gls{GEANT}3 and \gls{GEANT}4 transport codes.
(Color online) Left: energy distribution of single cell clusters obtained from scans with a 6 GeV muon-beam. Right: energy distribution of clusters obtained from scans with a 6~GeV electron beam. For both cases the data are shown with black markers and compared with the predictions from \gls{MC} simulations with \gls{GEANT}3 and \gls{GEANT}4 transport codes.
(Color online) Left: energy distribution of single cell clusters obtained from scans with a 6 GeV muon-beam. Right: energy distribution of clusters obtained from scans with a 6~GeV electron beam. For both cases the data are shown with black markers and compared with the predictions from \gls{MC} simulations with \gls{GEANT}3 and \gls{GEANT}4 transport codes.
(Color online) Left: energy distribution of single cell clusters obtained from scans with a 6 GeV muon-beam. Right: energy distribution of clusters obtained from scans with a 6~GeV electron beam. For both cases the data are shown with black markers and compared with the predictions from \gls{MC} simulations with \gls{GEANT}3 and \gls{GEANT}4 transport codes.
Cluster reconstruction/finding efficiency (left) and energy nonlinearity (right) as a function of hit position obtained from \gls{MC} simulations for 1~GeV electrons. Red markers stand for single cell clusters ($n=1$), blue makers stand for the clusters made of at least two cells ($n>1$), and the black markers stand for the clusters with any number of cells ($n>0$).
Cluster reconstruction/finding efficiency (left) and energy nonlinearity (right) as a function of hit position obtained from \gls{MC} simulations for 1~GeV electrons. Red markers stand for single cell clusters ($n=1$), blue makers stand for the clusters made of at least two cells ($n>1$), and the black markers stand for the clusters with any number of cells ($n>0$).
Cluster reconstruction/finding efficiency (left) and energy nonlinearity (right) as a function of hit position obtained from \gls{MC} simulations for 1~GeV electrons. Red markers stand for single cell clusters ($n=1$), blue makers stand for the clusters made of at least two cells ($n>1$), and the black markers stand for the clusters with any number of cells ($n>0$).
Cluster reconstruction/finding efficiency (left) and energy nonlinearity (right) as a function of hit position obtained from \gls{MC} simulations for 1~GeV electrons. Red markers stand for single cell clusters ($n=1$), blue makers stand for the clusters made of at least two cells ($n>1$), and the black markers stand for the clusters with any number of cells ($n>0$).
(Color online) The reconstruction efficiency for the clusters made of at least two cells and for 1 GeV electrons as a function of hit position measured using the \glspl{MWPC} (left) and as a function of the incoming particle energy (right).
(Color online) The reconstruction efficiency for the clusters made of at least two cells and for 1 GeV electrons as a function of hit position measured using the \glspl{MWPC} (left) and as a function of the incoming particle energy (right).
(Color online) The reconstruction efficiency for the clusters made of at least two cells and for 1 GeV electrons as a function of hit position measured using the \glspl{MWPC} (left) and as a function of the incoming particle energy (right).
(Color online) The reconstruction efficiency for the clusters made of at least two cells and for 1 GeV electrons as a function of hit position measured using the \glspl{MWPC} (left) and as a function of the incoming particle energy (right).
(Color online) Energy nonlinearity correction ($E_{\rm rec}/E_{\rm beam}$) as a function of beam energy for electrons obtained from \gls{TB} data (black points), and from \gls{MC} simulations with \gls{GEANT}3 (red points) and \gls{GEANT}4 (cyan points) transport codes.
(Color online) Energy nonlinearity correction ($E_{\rm rec}/E_{\rm beam}$) as a function of reconstructed energy for electrons obtained from \gls{TB} data (black points), and from \gls{MC} simulations with \gls{GEANT}3 (red points) and \gls{GEANT}4 (cyan points) transport codes.
(Color online) Left: relative energy resolution as a function of beam energy. Right: cluster-position resolution as a function of beam energy.
(Color online) Left: relative energy resolution as a function of beam energy. Right: cluster-position resolution as a function of beam energy.
(Color online) Left: relative energy resolution as a function of beam energy. Right: cluster-position resolution as a function of beam energy.
(Color online) Left: relative energy resolution as a function of beam energy. Right: cluster-position resolution as a function of beam energy.