Hamamatsu APD for CMS ECAL: Quality insurance

D. Bailleux, I. Britvitch, K. Deiters, R. Egeland, B. Gilbert, J. Grahl, Q. Ingram, A. Kuznetsov, E. Lester, Y. Musienko, D. Renker, S. Reucroft, R. Rusack, T. Sakhelashvili, A. Singovski, J. Swain

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations


The Hamamatsu Photonics S8148 large area Avalanche Photo Diodes (APD) were designed for the crystal electromagnetic calorimeter of the CMS setup at LHC in a close collaboration of Hamamatsu Photonics and CMS APD group (PSI, Northeastern University and University of Minnesota). All essential parameters of these devices are controlled by the producer and are fairly stable during the mass production, except the radiation hardness. To insure 99.9% reliability of APDs in the radiation hard environment of LHC, the CMS APD group had to invent a dedicated screening procedure. The details of this procedure and some results of the screening are discussed.

Original languageEnglish (US)
Pages (from-to)622-625
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-2
StatePublished - Feb 1 2004
EventFrontier Detectors for Frontier Physics, Proceedings - La Biodola, Italy
Duration: May 25 2003May 31 2003

Bibliographical note

Copyright 2008 Elsevier B.V., All rights reserved.


  • Electromagnetic calorimeter
  • Photodetector
  • Silicon

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