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Title: Calibration and performance of the ATLAS Tile Calorimeter during the LHC Run 2

Abstract

The Tile Calorimeter (TileCal) is the hadronic sampling calorimeter of the ATLAS experiment at the Large Hadron Collider (LHC). TileCal uses iron absorbers and scintillators as active material and it covers the central region | η| < 1.7. Jointly with the other sub-detectors it is designed for measurements of hadrons, jets, tau-particles and missing transverse energy. It also assists in muon identification. TileCal is regularly monitored and calibrated by several different calibration systems: a Cs radioactive source, a laser light system to check the PMT response, and a charge injection system (CIS) to check the front-end electronics. These calibration systems, in conjunction with data collected during proton-proton collisions, Minimum Bias (MB) events, provide extensive monitoring of the instrument and a means for equalizing the calorimeter response at each stage of the signal propagation. The performance of the calorimeter has been established with cosmic ray muons and the large sample of the proton-proton collisions and compared to Monte Carlo (MC) simulations. The response of high momentum isolated muons is also used to study the energy response at the electromagnetic scale, isolated hadrons are used as a probe of the hadronic response. The calorimeter time resolution is studied with multijet events. Amore » description of the different TileCal calibration systems and the results on the calorimeter performance during the LHC Run 2 are introduced. The findings on the pile-up noise and response uniformity studies are also reported on.« less

Authors:
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
ATLAS Collaboration
OSTI Identifier:
1544325
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
Journal Volume: 13; Journal Issue: 02; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Alberich, L. Cerda. Calibration and performance of the ATLAS Tile Calorimeter during the LHC Run 2. United States: N. p., 2018. Web. doi:10.1088/1748-0221/13/02/C02031.
Alberich, L. Cerda. Calibration and performance of the ATLAS Tile Calorimeter during the LHC Run 2. United States. doi:10.1088/1748-0221/13/02/C02031.
Alberich, L. Cerda. Wed . "Calibration and performance of the ATLAS Tile Calorimeter during the LHC Run 2". United States. doi:10.1088/1748-0221/13/02/C02031. https://www.osti.gov/servlets/purl/1544325.
@article{osti_1544325,
title = {Calibration and performance of the ATLAS Tile Calorimeter during the LHC Run 2},
author = {Alberich, L. Cerda},
abstractNote = {The Tile Calorimeter (TileCal) is the hadronic sampling calorimeter of the ATLAS experiment at the Large Hadron Collider (LHC). TileCal uses iron absorbers and scintillators as active material and it covers the central region | η| < 1.7. Jointly with the other sub-detectors it is designed for measurements of hadrons, jets, tau-particles and missing transverse energy. It also assists in muon identification. TileCal is regularly monitored and calibrated by several different calibration systems: a Cs radioactive source, a laser light system to check the PMT response, and a charge injection system (CIS) to check the front-end electronics. These calibration systems, in conjunction with data collected during proton-proton collisions, Minimum Bias (MB) events, provide extensive monitoring of the instrument and a means for equalizing the calorimeter response at each stage of the signal propagation. The performance of the calorimeter has been established with cosmic ray muons and the large sample of the proton-proton collisions and compared to Monte Carlo (MC) simulations. The response of high momentum isolated muons is also used to study the energy response at the electromagnetic scale, isolated hadrons are used as a probe of the hadronic response. The calorimeter time resolution is studied with multijet events. A description of the different TileCal calibration systems and the results on the calorimeter performance during the LHC Run 2 are introduced. The findings on the pile-up noise and response uniformity studies are also reported on.},
doi = {10.1088/1748-0221/13/02/C02031},
journal = {Journal of Instrumentation},
number = 02,
volume = 13,
place = {United States},
year = {2018},
month = {2}
}

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Works referenced in this record:

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journal, July 2009

  • Adragna, P.; Alexa, C.; Anderson, K.
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