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A layer correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test
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SYSNO ASEP 0367959 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A layer correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test Author(s) Abat, E. (TR)
Abdallah, J.M. (ES)
Addy, T.N. (US)
Lokajíček, Miloš (FZU-D) RID, ORCID
Němeček, Stanislav (FZU-D) RID, ORCIDSource Title Journal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221
Roč. 6, č. 6 (2010), P06001/1-P06001/28Number of pages 28 s. Language eng - English Country GB - United Kingdom Keywords ATLAS ; calorimeter methods ; calorimeters ; detector modelling and simulations ; pattern recognition ; cluster finding ; calibration and fitting methods Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z10100502 - FZU-D (2005-2011) UT WOS 000294492600001 DOI 10.1088/1748-0221/6/06/P06001 Annotation A new method for calibrating the hadron response of a segmented calorimeter is developed and successfully applied to beam test data. It is based on a principal component analysis of the calorimeter layer energy deposits, exploiting longitudinal shower development information to improve the measured energy resolution. Corrections for invisible hadronic energy and energy lost in dead material in front of and between the calorimeters of the ATLAS experiment were calculated with simulated Geant4 Monte Carlo events and used to reconstruct the energy of pions impinging on the calorimeters during the 2004 Barrel Combined Beam Test at the CERN H8 area. For pion beams with energies between 20 and 180 GeV, the particle energy is reconstructed within 3% and the energy resolution is improved by 11% to 25% compared to the response at the electromagnetic scale. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
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