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CMS Note
Report number CMS-CR-2012-302
Title Calibration of the CMS Electromagnetic Calorimeter at the LHC
Author(s) Leslie, Dawn Elizabeth (Brunel U.)
Publication 2012
Collaboration for the CMS Collaboration
Imprint 12 Nov 2012
Number of pages 4
Presented at 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference, Anaheim, California, USA, 29 Oct - 3 Nov 2012
Subject category Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
Keywords ECAL
Abstract The CMS electromagnetic calorimeter comprises 75848 lead tungstate scintillating crystals. The calibration of each channel is crucial to ensure excellent energy resolution. During data-taking in 2010 and 2011 a number of physics channels were used to compute the inter-calibration and absolute energy scale of the calorimeter. These included low mass di-photon resonances, electrons from Z and W decays and the azimuthal symmetry of low energy deposits from minimum bias events. The acquisition of the required data samples is described and results are presented for the precision of each method, together with the combined precision of the inter-calibration and absolute energy scale.
Copyright/License Preprint: (License: CC-BY-4.0)

 


 Record created 2012-11-16, last modified 2018-06-07


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