CERN Accelerating science

CMS Note
Report number	CMS-CR-2008-040
Title	The CMS Barrel Calorimeter Response to Particle Beams from 2 to 350 GeV/c
Author(s)	Yazgan, Elfe (Texas Tech.)
Collaboration	for the CMS ECAL/HCAL Collaborations
Publication	2009
Imprint	28 Jun 2008
Number of pages	11
In:	J. Phys.: Conf. Ser. 160 (2009) 012056
In:	13th International Conference on Calorimetry in High Energy Physics, Pavia, Italy, 26 May - 30 May 2008, pp.012056
DOI	10.1088/1742-6596/160/1/012056
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Free keywords	CALORIMETRY ; ECAL ; HCAL ; TESTBEAMS
Abstract	The response of the combined CMS barrel calorimeters to hadrons, electrons and muons over a range from 2 to 350 GeV/$c$ has been measured. The analysis of the differences in calorimeter response to charged pions, kaons, protons and antiprotons and a discussion of the underlying phenomena are presented. Techniques to correct the signals from the considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in reconstructing the energies of hadrons are also presented. Above 5 GeV/$c$, these corrections improve the energy resolution of the combined system where the stochastic term equals $84.7$\% and the constant term is $7.4$\%. The corrected mean response remains constant within 1.3\% {\it rms}.
Copyright/License	Preprint: (License: CC-BY-4.0)

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