Drift Time Measurement in the ATLAS Liquid Argon Electromagnetic Calorimeter using Cosmic Muons

Aad, G.; Abbott, B.; Abdallah, J.; Abdelalim, A. A.; Abdesselam, A.; Abdinov, O.; Abi, B.; Abolins, M.; Abramowicz, H.; Abreu, H.; Acharya, B. S.; Adams, T.; Addy, T. N.; Adelman, J.; Adorisio, C.; Adragna, P.; Adye, T.; Aefsky, S.; Aguilar-Saavedra, J. A.; Aharrouche, M.; Ahlen, S. P.; Ahles, F.; Ahmad, A.; Ahmed, H.; Ahsan, M.; Aielli, G.; Akdoğan, T.; Åkesson, T. P. A.; Akimoto, G.; Akimov, A. V.; Aktas, A.; Alam, M. S.; Alam, Muhammad Aftab; Albert, J.; Albrand, S.; Aleksa, M.; Александров, И. Н.; Alessandria, F.; Alexa, C.; Alexander, G.; Alexandre, G.; Alexopoulos, T.; Alhroob, M.; Aliev, M.; Alimonti, G.; Alison, J.; Aliyev, M.; Allport, Philip Patrick; Allwood-Spiers, S. E.; Aloisio, A.; Alon, R.; Alonso, A.; Alviggi, M. G.; Amako, K.; Amelung, C.; Ammosov, V. V.; Amorim, A.; Amorós, G.; Amram, N.; Anastopoulos, C.; Andeen, T.; Anders, C. F.; Anderson, K. J.; Andreazza, A.; Andrei, V.; Anduaga, X. S.; Angerami, A.; Anghinolfi, F.; Anjos, N.; Antonaki, A.; Antonelli, M.; Antos̆, J.; Antunović, B.; Anulli, F.; Aoun, S.; Arabidze, G.; Aracena, I.; Arai, Y.; Arce, A. T. H.; Archambault, J. P.; Arfaoui, S.; Arguin, J-F.; Argyropoulos, Theodoros; Arık, E.; Arık, M.; Armbruster, A. J.; Arnaez, O.; Arnault, C.; Artamonov, A.; Arutinov, D.; Asai, M.; Asai, S.; Asfandiyarov, R.; Ask, S.; Åsman, B.; Asner, D. M.; Asquith, L.

doi:10.1007/978-3-642-22116-3_3

Cited by 4 publications

(7 citation statements)

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“…These can be particularly important in the case of high-energy muons, which can lose a significant amount of energy between the two tracking detectors. Such events have been previously exploited for pulse shape studies of the LAr calorimeter and as a source of photons used to validate the photon-identification capabilities of the ATLAS EM calorimeter [7,11].…”

Section: Cosmic-ray Events In Atlasmentioning

confidence: 99%

Studies of the performance of the ATLAS detector using cosmic-ray muons

Aad¹,

Abbott²,

Abdallah³

et al. 2011

Eur. Phys. J. C

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101

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Abstract.Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector. Cosmic-ray muons can penetrate to the cavern and deposit energy in all detector subsystems. Such events have played an important role in the commissioning of the detector since the start of the installation phase in 2005 and were particularly important for understanding the detector performance in the time prior to the arrival of the first LHC beams. Global cosmic-ray runs were undertaken in both 2008 and 2009 and these data have been used through to the early phases of collision data-taking as a tool for calibration, alignment and detector monitoring. These large datasets have also been used for detector performance studies, including investigations that rely on the combined performance of different subsystems. This paper presents the results of performance studies related to combined tracking, lepton identification and the reconstruction of jets and missing transverse energy. Results are compared to expectations based on a cosmic-ray event generator and a full simulation of the detector response.

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Section: Cosmic-ray Events In Atlasmentioning

confidence: 99%

Studies of the performance of the ATLAS detector using cosmic-ray muons

Aad¹,

Abbott²,

Abdallah³

et al. 2011

Eur. Phys. J. C

Self Cite

101

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“…Single circulating beams were established and beam-splash events, in which a single proton bunch was directed onto a collimator upstream of the detector, were used to illuminate the detector. These cosmicray and beam-splash data have been used for a number of important commissioning studies, particularly those related to understanding of the pulse shapes [3], [5]. A well-publicized accident on Sept. 19, 2008 resulted in the shutdown of the LHC prior to first collisions.…”

Section: Detector Operationmentioning

confidence: 99%

The ATLAS liquid argon calorimeter: One year of LHC operation and future upgrade plans for HL-LHC

Krieger

2011

2011 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and Their Applications

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Section: Page 4 Of 36mentioning

confidence: 99%

Section: Cosmic-ray Events In Atlasmentioning

confidence: 99%

“…J. C ( ) 71: 1593 events have been previously exploited for pulse shape studies of the LAr calorimeter and as a source of photons used to validate the photon-identification capabilities of the ATLAS EM calorimeter [7,11].The reconstruction of cosmic-ray events is also complicated by the fact that they occur at random times with respect to the 40 MHz readout clock, which is synchronized to the LHC clock during normal operation. For each subsystem, reconstruction of these events therefore first requires some measure of the event time with respect to the readout clock.…”

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Studies of the performance of the ATLAS detector using cosmic-ray muons

Aad¹,

Gray²,

Mateos³

et al. 2011

The Performance of the ATLAS Detector

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Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the AT-LAS detector. Cosmic-ray muons can penetrate to the cavern and deposit energy in all detector subsystems. Such events have played an important role in the commissioning of the detector since the start of the installation phase in 2005 and were particularly important for understanding the detector performance in the time prior to the arrival of the first LHC beams. Global cosmic-ray runs were undertaken in both 2008 and 2009 and these data have been used through to the early phases of collision data-taking as a tool for calibration, alignment and detector monitoring. These large datasets have also been used for detector performance studies, including investigations that rely on the combined performance of different subsystems. This paper presents the results of performance studies related to combined tracking, lepton identification and the reconstruction of jets and missing transverse energy. Results are compared to expectations based on a cosmic-ray event generator and a full simulation of the detector response. IntroductionThe ATLAS detector [1] was constructed to provide excellent physics performance in the difficult environment of the Large Hadron Collider (LHC) at CERN [2], which will collide protons at center-of-mass energies up to 14 TeV, with unprecedented luminosity. It is designed to be sensitive to any experimental signature that might be associated with physics at this new high-energy frontier. This includes precision measurements of high p T leptons and jets, as well as large transverse-energy imbalances attributable to the production of massive weakly interacting particles. Such particles are predicted in numerous theories of physics beyond e-mail: atlas.secretariat@cern.ch the Standard Model, for example those invoking weak-scale supersymmetry or the existence of large extra dimensions.Prior to the start of data-taking, understanding of the expected performance of individual subsystems relied on beam test results and on detailed GEANT4 [3,4] simulations [5], including the modeling of inactive material both in the detector components and in the detector services and support structure. While extensive beam testing provided a great deal of information about the performance of the individual detector subsystems, a detailed understanding of the full detector could only be achieved after the system was in place and physics signals could be used for performance studies and for validation or tuning of the simulation.In both 2008 and 2009 the ATLAS detector collected large samples of cosmic-ray events. These extended periods of operation allowed for the training of shift crews, the exercising of the trigger and data acquisition systems as well as of other infrastructure such as the data-handling system, reconstruction software, and tools for hardware and data-quality monitoring. The large data samples accumulated have also been used f...

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Drift Time Measurement in the ATLAS Liquid Argon Electromagnetic Calorimeter using Cosmic Muons

Cited by 4 publications

References 15 publications

Studies of the performance of the ATLAS detector using cosmic-ray muons

Studies of the performance of the ATLAS detector using cosmic-ray muons

The ATLAS liquid argon calorimeter: One year of LHC operation and future upgrade plans for HL-LHC

Studies of the performance of the ATLAS detector using cosmic-ray muons

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