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Available on CMS information server CMS IN 2002/030 CMS Internal Note

Summary: Available on CMS information server CMS IN 2002/030
CMS Internal Note
The content of this note is intended for CMS internal use and distribution only
19 February 2002
Single and Double Pulse Linearity Studies
Performed on Candidate PMTs for HF
U. Akgun, A.S. Ayan, M. Miller, J. Olson, Y. Onel, I. Schmidt
University of Iowa, Iowa City, USA
E. GĻulmez
Bogazici University, Istanbul, Turkey
Linear response to light intensity over a wide range is important for the PMTs to be used in HF
calorimeter. Response of the PMTs from three different manufacturers has been studied. We have
determined the range of intensities where each tube displays a linear behavior. Linearity tests have
been done with single and double light pulses on the candidate tubes.
1 Introduction
Calorimeters extract energy information mostly through processing the pulses coming from the phototubes. Ef-
ficient and reliable operation of a calorimeter depend on phototubes that are linear over a wide range of light


Source: Akgun, Ugur - Department of Physics and Astronomy, University of Iowa


Collections: Physics