Avalanche photodiodes for the CMS detector

K. Deiters, A. Dorokhov, Q. Ingram, S. Nicol, I. Musienko, B. Patel, D. Renker, S. Reucroft, R. Rusack, T. Sakhelashvili, A. Singovski, J. Swain, P. Vikas

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The CERN LHC experiment CMS [1] has selected for the readout of the barrel crystal calorimeter [2] a 5×5 mm2 avalanche photodiode (APD) manufactured by Hamamatsu Photonics. In the detector we will equip each crystal with two APD's for a total of 122,400 diodes. As the calorimeter will be almost completely inaccessible during the life of the detector, the assurance that they will survive with a high probability in the intense radiation field is an essential part of the of the APD qualification process. In this paper the properties of the APD selected will be described, as well as the procedures we have developed to assure their radiation hardness and reliability.

Original languageEnglish (US)
Title of host publicationIEEE Nuclear Science Symposium and Medical Imaging Conference
EditorsD. Merelli, J. Surget, M. Ulma
StatePublished - Dec 1 2000
Event2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France
Duration: Oct 15 2000Oct 20 2000


Other2000 IEEE Nuclear Science Symposium Conference Record


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