The Simulation of the ATLAS Liquid Argon Calorimetry
- CPPM-IN2P3/CNRS - U. Mediterranee, 163, av. de Luminy - case 902 - 13288 Marseille cedex 09 (France)
The liquid argon calorimeter of the ATLAS detector is aimed at measuring electromagnetic energy deposit from pp collision produced at the Large Hadron Collider. It was designed to allow rare electromagnetic final states detection and jet spectroscopy in a high-background environment. The simulation of the calorimeter has a long history and is now a component of an integrated GEANT 4 based simulation of ATLAS. Its sophistication has increased during its development. At present it models many effects which significantly affect shower development and response. Step by step, the accuracy of the simulation is tested and tuned to beam test data accumulated in dedicated runs from 2001 to present. The framework in which it runs allows users to switch simulation configuration between pp collisions, cosmic rays and single particle data taking, with the full ATLAS detector or with the various beam test setups. For the purpose of hadronic and electromagnetic calibration, a detailed accounting scheme of energy flow, allowing energy deposits tracking in upstream dead material for example, is implemented. Fast parameterization of electromagnetic shower development has also recently become available. The software is developed by many experts around the world and works at a very high level of reliability because of the constant scrutiny it receives from a large community of developers and users, as well as a dedicated validation team.
- OSTI ID:
- 20891896
- Journal Information:
- AIP Conference Proceedings, Vol. 867, Issue 1; Conference: 12. international conference on calorimetry in high energy physics, Chicago, IL (United States), 5-9 Jun 2006; Other Information: DOI: 10.1063/1.2396983; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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