Correlation Between Light Yield and Longitudinal Transmission in PWO crystals and Impact on the Precision of the Crystal Intercalibration

At the start-up of the CMS experiment the only available intercalibration for the majority of crystals of the electromagnetic calorimeter will come from the light yield measurement performed routinely in Rome and CERN Regional Centers during the crystal qualification procedure. In the analysis of th...

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Detalles Bibliográficos
Autores principales: Barone, L, Cavallari, F, Costantini, S, Dafinei, I, Diemoz, M, Longo, E, Meridiani, P, Organtini, G, Paramatti, R, Obertino, M M
Lenguaje:eng
Publicado: 2004
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/787489
Descripción
Sumario:At the start-up of the CMS experiment the only available intercalibration for the majority of crystals of the electromagnetic calorimeter will come from the light yield measurement performed routinely in Rome and CERN Regional Centers during the crystal qualification procedure. In the analysis of the data obtained in the Rome Regional Center a strong correlation between the crystal light yield and their longitudinal transmission in the range 350-370 nm has been noticed. As a consequence, the transmission measurement can be combined with the direct light yield determination to improve the intercalibration of the crystals. In the following the outcome of this analysis and the results that can be achieved will be discussed.

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