Calibration of the CMS electromagnetic calorimeter with √s = 7 TeV LHC collisions data

Author

Matteo, Leonardo Di

Author_Institution

Univ. of Milano-Bicocca, Milan, Italy

fYear

2011

fDate

23-29 Oct. 2011

Firstpage

1135

Lastpage

1137

Abstract

The √s = 7 TeV LHC collisions recorded with the CMS detector have been used to perform a channel-by-channel calibration of the electromagnetic calorimeter (ECAL). With 2010 data, decays of π⁰ and η into two photons as well as the azimuthal symmetry of the average energy deposition at a given pseudorapidity are used to equalize the response of the individual channels. Based on 36 pb^-1 of collected luminosity, results will be shown for each method and for the combination. Finally, the energy scale of the ECAL has been investigated and comparison with the simulation predictions has been made.

Keywords

calibration; electromagnetic decays; eta mesons; particle calorimetry; pion decay; position sensitive particle detectors; CMS detector; CMS electromagnetic calorimeter calibration; ECAL; LHC collision data; average energy deposition analysis; azimuthal symmetry; channel-by-channel calibration method; eta decay into gamma+gamma; luminosity analysis; pion⁰ decay into gamma+gamma; pseudorapidity analysis; Electromagnetic compatibility; Electromagnetics; Large Hadron Collider;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2011 IEEE

Conference_Location

Valencia

ISSN

1082-3654

Print_ISBN

978-1-4673-0118-3

Type

conf

DOI

10.1109/NSSMIC.2011.6154588

Filename

6154588