CERN Accelerating science

CMS Note
Report number	CMS-NOTE-1999-022
Title	Initial Tests on First Full-size Endcap Crystals
Author(s)	Davies, Gavin (CERN) ; Auffray, Etiennette (CERN) ; Lecoq, Paul (CERN) ; Marcos, Roger (CERN) ; Schneegans, Marc (LAPP, Annecy, France) ; Sempere-Roldan, P (CERN)
Submitted by	24 Mar 1999
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Free keywords	ECAL
Abstract	At the end of last year the first full size ECAL endcap crystals were delivered to CERN.Thirty in number, they were produced to the final geometrical specifications; 220mm long with a rear square face of 30mm and a front square face of 28.6mm. All were de livered polished. The visual inspection, dimension, transmission, light yield and light yield uniformity tests carried out since are discussed, with particular emphasis on the light yield uniformity. The results are very encouraging.
Copyright/License	Preprint: (License: CC-BY-4.0)

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