Monte Carlo investigation of the transition effect

Peso, J. Del; Ros, E.

doi:10.1016/0168-9002(90)90709-f

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Wigmans [68], using the EGS4 code [45], has systematically simulated electromagnetic shower cascades in sampling calorimeters with liquid argon and scintillator readout detectors as a function of the Z-value of the passive samplers. His results are in agreement with experimental data and other simulations [85,86], and have confirmed [68] that the e/mip ratio depends mainly on the difference in the low-energy photon absorption. The e/mip ratios are <1 for Z absorber > Z readout , ≈1 for Z absorber = Z readout , and >1 for Z absorber < Z readout .…”

Section: E/mip Dependence On Readout and Passive Absorber Z Valuessupporting

confidence: 88%

Physics of cascading shower generation and propagation in matter: principles of high-energy, ultrahigh-energy and compensating calorimetry

Leroy

Rancoita

2000

Rep. Prog. Phys.

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Calorimetry plays a crucial role in modern experimental physics. Calorimeters are essential tools to extract physics in accelerator and non-accelerator experiments. The physics phenomena at the base of cascading processes in matter and the basic principles of calorimeters operation are reviewed at the light of data obtained from running experiments or from sets of dedicated measurements and the constraints from physics requirements. From this understanding comes the possibility of building powerful calorimetric systems with the optimal performances required by future experiments at high-energy and ultrahigh-energy regimes.

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Section: E/mip Dependence On Readout and Passive Absorber Z Valuessupporting

confidence: 88%

Physics of cascading shower generation and propagation in matter: principles of high-energy, ultrahigh-energy and compensating calorimetry

Leroy

Rancoita

2000

Rep. Prog. Phys.

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Energy linearity and resolution of the ATLAS electromagnetic barrel calorimeter in an electron test-beam

Aharrouche

Colás

Ciaccio

et al. 2006

Nuclear Instruments and Methods in Physics Research Section A:

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ATLAS Electromagnetic Barrel Calorimeter CollaborationA module of the ATLAS electromagnetic barrel liquid argon calorimeter was exposed to the CERN electron test-beam at the H8 beam line upgraded for precision momentum measurement. The available energies of the electron beam ranged from 10 to 245 GeV. The electron beam impinged at one point corresponding to a pseudo-rapidity of eta=0.687 and an azimuthal angle of phi=0.28 in the ATLAS coordinate system. A detailed study of several effects biasing the electron energy measurement allowed an energy reconstruction procedure to be developed that ensures a good linearity and a good resolution. Use is made of detailed Monte Carlo simulations based on Geant which describe the longitudinal and transverse shower profiles as well as the energy distributions. For electron energies between 15 GeV and 180 GeV the deviation of the measured incident electron energy over the beam energy is within 0.1%. The systematic uncertainty of the measurement is about 0.1% at low energies and negligible at high energies. The energy resolution is found to be about 10% sqrt(E) for the sampling term and about 0.2% for the local constant term

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Testbeam studies of production modules of the ATLAS Tile Calorimeter

Adragna

Alexa²,

Anderson

et al. 2009

Nuclear Instruments and Methods in Physics Research Section A:

105

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We report test beam studies of 11% of the production ATLAS Tile Calorimeter modules. The modules were equipped with production front-end electronics and all the calibration systems planned for the final detector. The studies used muon, electron and hadron beams ranging in energy from 3 to 350 GeV. Two independent studies showed that the light yield of the calorimeter was similar to 70 pe/GeV, exceeding the design goal by 40%. Electron beams provided a calibration of the modules at the electromagnetic energy scale. Over 200 calorimeter cells the variation of the response was 2.4%. The linearity with energy was also measured. Muon beams provided an intercalibration of the response of all calorimeter cells. The response to muons entering in the ATLAS projective geometry showed an RMS variation of 2.5% for 91 measurements over a range of rapidities and modules. The mean response to hadrons of fixed energy had an RMS variation of 1.4% for the modules and projective angles studied. The response to hadrons normalized to incident beam energy showed an 8% increase between 10 and 350 GeV, fully consistent with expectations for a noncompensating calorimeter. The measured energy resolution for hadrons of sigma/E = 52.9%/root E circle plus 5.7% was also consistent with expectations. Other auxiliary studies were made of saturation recovery of the readout system, the time resolution of the calorimeter and the performance of the trigger signals from the calorimeter. (C) 2009 Elsevier B.V. All rights reserved

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Monte Carlo investigation of the transition effect

Cited by 3 publications

References 22 publications

Physics of cascading shower generation and propagation in matter: principles of high-energy, ultrahigh-energy and compensating calorimetry

Physics of cascading shower generation and propagation in matter: principles of high-energy, ultrahigh-energy and compensating calorimetry

Energy linearity and resolution of the ATLAS electromagnetic barrel calorimeter in an electron test-beam

Testbeam studies of production modules of the ATLAS Tile Calorimeter

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