Title :
Testbeam results on particle identification with aerogel used as RICH radiator
Author :
Alemi, M. ; Bellunato, T. ; Braem, A. ; Calvi, M. ; Chesi, E. ; Joram, C. ; Liko, D. ; Matteuzzi, C. ; Negri, P. ; Neufeld, N. ; Paganoni, M. ; Seguinot, J. ; Voillat, D. ; Weilhammer, P. ; Ypsilantis, T.
Author_Institution :
Dipartimento di Fisica, Univ. di Milano Bicocca, Italy
fDate :
8/1/2001 12:00:00 AM
Abstract :
We present the results obtained by exposing samples of silica aerogel of different thickness and optical properties to pion and proton beams with momenta between 6 and 10 GeV/c in the PS testbeam facility at CERN. Two large diameter pad hybrid photodiodes with 2048 channels, produced at CERN, have been used as photon detectors. Separate Cherenkov rings produced by the different particles were reconstructed obtaining pion/proton separation over the whole momentum range. The number of photoelectrons was measured as a function of aerogel thickness and was found to be in agreement with Monte Carlo expectations
Keywords :
Cherenkov counters; meson detection; photodiodes; proton detection; Monte Carlo; RICH; SiO2; aerogel; aerogel thickness; pad hybrid photodiodes; photoelectrons; pion beam; pion/proton separation; proton beam; ring imaging Cherenkov detector; silica aerogel; Detectors; Large Hadron Collider; Mesons; Optical refraction; Optical variables control; Particle beams; Photodiodes; Silicon compounds; Tagging; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
