1199937 SzGeCERN 20180607220629.0 eng Hintz, W Zurich, ETH The CMS Electromagnetic Calorimeter detector control and monitoring system 2010 Geneva CERN 27 May 2009 The Electromagnetic Calorimeter of the CMS experiment at the LHC is made of 75848 lead tungstate scintillating crystals and photo-detectors. In order to ensure the design stability and precision, the detector's properties must be continuously monitored. The tests to determine the performance of the detector's crystals, photo detectors and readout electronics are presented in detail. In particular, the identification of different hardware problems that were found is discussed as well as on their development in time. CC-BY-4.0 Preprint Wieland Hintz CERN EDS SzGeCERN Detectors and Experimental Techniques CERN ECAL CERN DETECT-INTEG CERN ELECTRONICS CERN ARTICLE INTNOTE PUBLCMS CERN LHC CMS on behalf of the CMS ECAL group 269-271 1-3 Nucl. Instrum. Methods Phys. Res., A 617 2010 http://cds.cern.ch/record/1199937/files/CR2009_156.pdf n 200932 13 20100921 1206 CER01 20090812 1128651 269-271 labiodola20090524 PUBLIC 002841724CER INTNOTECMSPUBL ConferencePaper ARTICLE DOI 10.1016/j.nima.2009.06.090 oai:cds.cern.ch:1199937 cerncds:FULLTEXT cerncds:CERN:FULLTEXT INIS cerncds:CERN Inspire 866364 CMS-CR-2009-156 3 p