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Public Liquid Argon Calorimeter Plots for 7 TeV Collision Data (2010, 2011 and 2012)

Introduction

Approved plots that can be shown by ATLAS speakers at conferences and similar events.
Please do not add figures on your own. Contact the responsible project leader in case of questions and/or suggestions.

Plots from the Paper "Monitoring and data quality assessment of the ATLAS liquid argon calorimeter" (May 2014)

All plots from this paper can be downloaded here. For detailed explanations please refer to the paper.

Timing Alignment from 8 TeV Data (May 2012)

Details on the data analysis to obtain the four plots on the timing are available in this document.
Results from this study have been used to update each FEB timing offset in May 2012 from Run .

Contact Houry Keoshkerian for further details

Average time per Front End Board in EM Barrel (EMB) with 8 TeV collision data on May 2012

With the increased statistic available in each run of 2012, the 896 EMB Front End Boards (FEB) have been aligned.

The average time for one FEB is computed as the result of a Gaussian fit including all the entries for all channels from this FEB.

(see for more details)

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/t_FEB_EMB.png

eps - pdf

Average time per Front End Board in EM Endcap (EMEC) with 8 TeV collision data on May 2012

With the increased statistic available in each run of 2012, the 552 EMEC Front End Boards (FEB) have been aligned.

The average time for one FEB is computed as the result of a Gaussian fit including all the entries for all channels from this FEB.

(see for more details)

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/t_FEB_EMEC.png

eps - pdf

Average time per Front End Board in Hadronic Endcap (HEC) with 8 TeV collision data on May 2012

With the increased statistic available in each run of 2012, the 48 HEC Front End Boards (FEB) have been aligned.

The average time for one FEB is computed as the result of a Gaussian fit including all the entries for all channels from this FEB.

(see for more details)

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/t_FEB_HEC.png

eps - pdf

Average time per Front End Board in the LAr Forward calorimeter (FCal) with 8 TeV collision data on May 2012

With the increased statistic available in each run of 2012, the 28 FCal Front End Boards (FEB) have been aligned.

The average time for one FEB is computed as the result of a Gaussian fit including all the entries for all channels from this FEB.

(see for more details)

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/t_FEB_FCAL.png

eps - pdf

Timing Resolution measured from 7 TeV 2011 Data

Timing Resolution from Middle Layers Cells from the LAr EM Barrel Calorimeter (2011 data)
Details on the data analysis to obtain the plot on the timing resolution is available in this document.

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults201/SingleCellTimeResEMBHi.png eps

Timing Alignment from 7 TeV Data (May 2011) - valid for 2011 data

Details on the data analysis to obtain the four plots on the timing are available in this document.
Results from this study have been used to update each FEB timing offset in April 2011.

Contact Ludovica Aperio Bella for further details

Average time per Front End Board in EM Barrel (EMB) with 7 TeV collision data on May 2011

Most of the FEB are aligned and centered to zero. The out-layers are due to the FEBs in the third layer (7.1% of the whole number of FEBs in the EMB) for which it was not possible to compute the average time because of lack of statistic. The sigma value given on the plot is the RMS of the distribution in a window of [-0.5 ; 0.5] ns.

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults201/EMB_median_approuval_scale_may_sigma.png eps

Average time per Front End Board in EM Endcap (EMEC) with 7 TeV collision data on May 2011.

FEBs are aligned and centered to zero. The sigma value given on the plot is the RMS of the distribution in a window of [-0.5 ; 0.5] ns.

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/EMEC_median_approuval_scale_may_sigma.png eps

Average time per Front End Board in Hadronic Endcap (HEC) with 7 TeV collision data on May 2011.

FEBs are aligned and centered to zero. The sigma value given on the plot is the RMS of the distribution in a window of [-0.5 ; 0.5] ns.

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults201/HEC_median_approuval_scale_may_sigma.png eps

Average time per Front End Board in Liquid Argon Forward Calorimeter (FCal) with 7 TeV collision data on May 2011.
FEBs are aligned and centered to zero. The sigma value given on the plot is the RMS of the distribution in a window of [-0.5 ; 0.5] ns.

[[https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/FCAL_median_approuval_scale_may_sigma.png] [https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/FCAL_median_approuval_scale_may_sigma.png]] eps

L1 trigger Timing Alignment for Strip Layer from 7 TeV Data (June 2011)

Details on the data analysis to obtain the trigger timing alignment plot are available in this document.
Results from this study have been used for data taking since May/Junel 2011.

Contact olivier Simard and Léa Gauthier for further details.

Timing Alignement of the strip layer wrt to L1 global timing for EMB & EMEC

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/lar_tbbdelay_layer1_30062011.gif pdf eps

Energy Flow in EM Calorimeter with 7 TeV Data (2010)

Details on the data analysis are available in this document:
The study of the cell occupancy has allowed to reveal a cable inversion
and a wrong HV settings which have been now corrected.
The occupancy before and after the correction are presented on page 5.
Cell Occupancy Map in the Electromagnetic Calorimeter
7 TeV collision data from April 2010 (see above document).

https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/S2_Ecut_map_data.gif eps
Zoom of cell Occupancy Map in the Electromagnetic Calorimeter in the region where the High Voltage was not set.
7 TeV collision data from April 2010 (see above document).


Before Hardware intervention
(HV not set on one side of the electrode)
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/S2HV3_7TeV.gif eps

After Hardware intervention
(HV set on both sides of the electrode)
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/S2HV3Corr_900GeV.gif eps
Zoom of cell Occupancy Map in the Electromagnetic Calorimeter in the region where two cables are swapped.
7 TeV collision data from April 2010 (see above document). A software correction has been applied.


Before Software Correction
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/S1Inv_900GeV.gif eps

After Software Correction
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/S1Inv_7TeV.gif eps

FCal Energy Flow

Details on the data analysis to obtain this plot is available
in this document.
Energy density in FCal1
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/FCal1C_EFlow.png eps

Timing Alignment from 7 TeV Data (2010) - Obsolete - Kept as reference

Details on the data analysis to obtain the four plots on the timing are available
in this document.
Results from this study have been used to update each FEB timing offset on the 29.04.2010.
Average time per Front End Board in EM Barrel (EMB)
7 TeV collision data from April 2010 (see above document).
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/TimingEMB.gif eps
Average time per Front End Board in EM Endcap (EMEC)
7 TeV collision data from April 2010 (see above document).
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/TimingEMEC.gif eps
Average time per Front End Board in Hadronic Endcap (HEC)
7 TeV collision data from April 2010 (see above document).
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/TimingHEC.gif eps
Average time per Front End Board in Forward Calorimeter (FCal)
7 TeV collision data from April 2010 (see above document).
https://twiki.cern.ch/twiki/pub/AtlasPublic/LArCaloPublicResults2010/TimingFCal.gif eps

Links


Responsible: Project leaders
Last reviewed by: Never reviewed


Major updates:
-- MartinAleksa - 19-Mar-2013

Responsible: MartinAleksa
Last reviewed by: Never reviewed

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Topic revision: r16 - 2014-07-08 - MartinAleksa
 
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