Energy calibration and resolution of the CMS electromagnetic calorimeter in pp collisions at √s = 7 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of Instrumentation (Q1) | ||
| Dergi ISSN | 1748-0221 Dergi Bilgileri (2013) | ||
| Makale Dili | İngilizce | Basım Tarihi | 09-2013 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 19-09-2013 |
| Cilt / Sayı / Sayfa | 8 / 9 / – | DOI | 10.1088/1748-0221/8/09/P09009 |
| Makale Linki | https://iopscience.iop.org/article/10.1088/1748-0221/8/09/P09009/pdf | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The energy calibration and resolution of the electromagnetic calorimeter (ECAL) of the CMS detector have been determined using proton-proton collision data from LHC operation in 2010 and 2011 at a centre-of-mass energy of sqrt(s)=7 TeV with integrated luminosities of about 5 inverse femtobarns. Crucial aspects of detector operation, such as the environmental stability, alignment, and synchronization, are presented. The in-situ calibration procedures are discussed in detail and include the maintenance of the calibration in the challenging radiation environment inside the CMS detector. The energy resolution for electrons from Z-boson decays is better than 2% in the central region of the ECAL barrel (for pseudorapidity abs(eta)<0.8) and is 2-5% elsewhere. The derived energy resolution for photons from 125 GeV Higgs boson decays varies across the barrel from 1.1% to 2.6% and from 2.2% to 5% in the endcaps. The calibration of the absolute energy is determined from Z to e+e- decays to a precision of 0.4% in the barrel and 0.8% in the endcaps. |
| Anahtar Kelimeler |
| Calorimeters | Gamma detectors (scintillators, CZT, HPG, HgI etc) | Large detector systems for particle and astroparticle physics |
