A Layer Correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test
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A Layer Correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test

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A Layer Correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test

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ATLAS Collaboration; Mitsou, Vasiliki; Ferrer Soria, Antonio Perfil; Valls Ferrer, Juan Antonio; Castillo Giménez, María Victoria Perfil; Cabrera Urbán, Susana Perfil; Fuster Verdú, Juan A. Perfil; Ros Martínez, Eduardo; Hernández Jiménez, Yesenia; Lacasta Llácer, Carlos; Higón Rodríguez, Emilio Perfil; García García, Carmen Perfil; Martí García, Salvador; Villaplana Pérez, Miguel
This document is a artículoDate2011

Este documento está disponible también en : http://dx.doi.org/10.1088/1748-0221/6/06/P06001

Este documento está disponible también en : http://hdl.handle.net/10550/36164
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 energy deposits in the calorimeter layers, 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 GeV and 180 GeV, the particle energy is reconstructed within 3% and the energy resolution is improved by between 11% and 25% compared to the resolution at the electromagnetic scale.

    ATLAS Collaboration Mitsou, Vasiliki Ferrer Soria, Antonio Valls Ferrer, Juan Antonio Castillo Giménez, María Victoria Cabrera Urbán, Susana Fuster Verdú, Juan A. Ros Martínez, Eduardo Hernández Jiménez, Yesenia Lacasta Llácer, Carlos Higón Rodríguez, Emilio García García, Carmen Martí García, Salvador Villaplana Pérez, Miguel 2011 A Layer Correlation technique for pion energy calibration at the 2004 ATLAS Combined Beam Test Journal Of Instrumentation 6 P06001 1 36
http://dx.doi.org/10.1088/1748-0221/6/06/P06001
distribuido bajo licencia Creative Commons de Reconocimiento-NoComercial 3.0 No adaptada

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