A Layer Correlation Technique for Pion Energy Calibration at the 2004 ATLAS Combined Beam Test
2009 (English)In: 2009 IEEE NUCLEAR SCIENCE SYMPOSIUM CONFERENCE RECORD, VOLS 1-5 / [ed] Yu B, 2009, 751-757 p.Conference paper (Refereed)
A new method for calibrating the hadron response of a segmented calorimeter is developed. 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 ATLAS calorimeters 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 about 20% compared to the electromagnetic scale.
Place, publisher, year, edition, pages
2009. 751-757 p.
, IEEE Nuclear Science Symposium Conference Record, ISSN 1082-3654
Radiology, Nuclear Medicine and Medical Imaging
IdentifiersURN: urn:nbn:se:kth:diva-32066ISI: 000280505100161ScopusID: 2-s2.0-77951167811ISBN: 978-1-4244-3961-4OAI: oai:DiVA.org:kth-32066DiVA: diva2:408503
IEEE Nuclear Science Symposium Conference 2009
QC 201104052011-04-052011-04-05Bibliographically approved