Title :
Comparison of PMTs from three different manufacturers for the CMS-HF forward calorimeter
Author :
Akgun, U. ; Anderson, E.W. ; Ayan, A.S. ; Gülmez, E. ; Miller, M. ; Onel, Y. ; Schmidt, I. ; Winn, D.
Author_Institution :
Univ. of Iowa, Iowa City, IA, USA
Abstract :
The builders of the CMS forward hadron calorimeter established a set of specifications for readout PMTs that reflected the physics goals and mechanical needs of the CMS experiment. Three manufacturers, Hamamatsu, Photonis (Philips), and Electron Tubes (EMI), provided candidate PMTs based on these initial requirements. Timing, gain, dark current properties, and single photoelectron spectra of these candidate PMTs were measured. Results show that Hamamatsu PMTs (R7525HA) conform best to the specifications of the Hadron-Forward (HF) Calorimeter.
Keywords :
Cherenkov radiation; calorimeters; particle calorimetry; photoelectron spectra; photomultipliers; position sensitive particle detectors; CMS-HF forward hadron calorimeter; Cherenkov light; Electron Tubes PMT; Hamamatsu R7525HA PMT; Philips PMT; Photonis PMT; dark current properties; gain; high-energy physics experiment; photomultiplier tube; single photoelectron spectra; timing; Collision mitigation; Current measurement; Dark current; Electromagnetic interference; Electron tubes; Gain measurement; Hafnium; Manufacturing; Physics; Timing; CMS; CMS Hadron-Forward; Calorimetry; Cherenkov light; HF; PMT; SPES; calorimeter; high-energy physics experiment; photomultiplier tube; single photoelectron spectrum;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2004.832681
