The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth of information, especially at low energies. The analysis of the differences in calorimeter response to charged pions, kaons, protons and antiprotons and a detailed discussion of the underlying phenomena are presented. We also show techniques that apply corrections to the signals from the considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in reconstructing the energies of hadrons. Above 5 GeV/c, these corrections improve the energy resolution of the combined system where the stochastic term equals 84.7 ± 1.6% and the constant term is 7.4 ± 0.8%. The corrected mean response remains constant within 1.3% rms. © Springer-Verlag / Società Italiana di Fisica 2009.

Abdullin, S., Abramov, V., Acharya, B., Adam, N., Adams, M., Adzic, P., et al. (2009). The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 60(3), 359-373 [10.1140/epjc/s10052-009-0959-5].

The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c

GHEZZI, ALESSIO;GOVONI, PIETRO;MALBERTI, MARTINA;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;
2009

Abstract

The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been measured. To our knowledge, this is the widest range of momenta in which any calorimeter system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth of information, especially at low energies. The analysis of the differences in calorimeter response to charged pions, kaons, protons and antiprotons and a detailed discussion of the underlying phenomena are presented. We also show techniques that apply corrections to the signals from the considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in reconstructing the energies of hadrons. Above 5 GeV/c, these corrections improve the energy resolution of the combined system where the stochastic term equals 84.7 ± 1.6% and the constant term is 7.4 ± 0.8%. The corrected mean response remains constant within 1.3% rms. © Springer-Verlag / Società Italiana di Fisica 2009.
Articolo in rivista - Articolo scientifico
Engineering (miscellaneous); Physics and Astronomy (miscellaneous)
English
359
373
15
Abdullin, S., Abramov, V., Acharya, B., Adam, N., Adams, M., Adzic, P., et al. (2009). The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 60(3), 359-373 [10.1140/epjc/s10052-009-0959-5].
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