Status of PWO crystal production for the electromagnetic calorimeter of CMS and of its construction

The CMS Electromagnetic Calorimeter will be composed of nearly 80,000 lead tungstate crystals. Owing to the high-energy resolution aimed at it and to the hostile Large Hadron Collider (LHC) radiation environment, a rigorous quality control of the crystals is performed on several parameters such as l...

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Published inNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Vol. 537; no. 1-2; pp. 373 - 378
Main Authors Auffray, Etiennette, Balog, Sandor, Bouquerel, Elian, Lecoq, Paul, Schneegans, Marc, Roldan, Pablo Sempere
Format Journal Article Conference Proceeding
LanguageEnglish
Published Elsevier B.V 21.01.2005
Elsevier
Subjects
Calorimetry
Crystals
Instrumentation and Detectors
PbWO4
Physics
PWO
Quality control
Calorimetry
PWO
Quality control
Crystals
29.40.Vj
PbWO4
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Summary:The CMS Electromagnetic Calorimeter will be composed of nearly 80,000 lead tungstate crystals. Owing to the high-energy resolution aimed at it and to the hostile Large Hadron Collider (LHC) radiation environment, a rigorous quality control of the crystals is performed on several parameters such as light yield, uniformity of the light collection or radiation hardness. The results of this quality control for the first 15,000 crystals delivered and characterized at the CERN Regional Centre by Bogoroditsk Techno-Chemical Plant are presented here. In addition, an overview of the construction status is given.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.08.046