Response Uniformity of the ATLAS Liquid Argon Electromagnetic Calorimeter
M. Aharrouche, J. Colas, L. Di Ciaccio, M. El Kacimi, O. Gaumer, M., Gouanere, D. Goujdami, R. Lafaye, S. Laplace, C. Le Maner, L. Neukermans, P., Perrodo, L. Poggioli, D. Prieur, H. Przysiezniak, G. Sauvage, I., Wingerter-Seez, R. Zitoun, F. Lanni, L. Lu, H. Ma, S. Rajago palan
TL;DR
This paper reports on the performance and uniformity of the ATLAS liquid argon electromagnetic calorimeter modules, demonstrating their calibration, energy reconstruction accuracy, and consistency with Monte Carlo simulations.
Contribution
It provides the first detailed assessment of the uniformity, resolution, and calibration quality of the completed calorimeter modules through test beam data.
Findings
Uniformity of 0.5% in modules
Global constant term of 0.6% measured
Good agreement with Monte Carlo simulation
Abstract
The construction of the ATLAS electromagnetic liquid argon calorimeter modules is completed and all the modules are assembled and inserted in the cryostats. During the production period four barrel and three endcap modules were exposed to test beams in order to assess their performance, ascertain the production quality and reproducibility, and to scrutinize the complete energy reconstruction chain from the readout and calibration electronics to the signal and energy reconstruction. It was also possible to check the full Monte Carlo simulation of the calorimeter. The analysis of the uniformity, resolution and extraction of constant term is presented. Typical non-uniformities of 0.5% and typical global constant terms of 0.6% are measured for the barrel and end-cap modules.
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