Light Detection System and Time Resolution of the NA62 RICH
G. Anzivino, M. Barbanera, A. Bizzeti, F. Brizioli, F. Bucci, A., Cassese, P. Cenci, R. Ciaranfi, V. Duk, J. Engelfried, N. Estrada-Tristan, E., Iacopini, E. Imbergamo, G. Latino, M. Lenti, R. Lollini, P. Lubrano, R., Piandani, M. Pepe, M. Piccini, A. Sergi, M. Turisini, R. Volpe
TL;DR
This paper details the characterization and performance measurement of the RICH detector's photomultipliers and electronics in the NA62 experiment, focusing on its light detection efficiency and time resolution for particle identification.
Contribution
It presents the first comprehensive characterization of the photomultiplier tubes and electronics used in the NA62 RICH detector, including measurements of time resolution and detection efficiency.
Findings
Photomultiplier characterization results
Time resolution measurements
Light detection efficiency data
Abstract
A large RICH detector is used in NA62 to suppress the muon contamination in the charged pion sample by a factor of 100 in the momentum range between 15 and 35 GeV/c. Cherenkov light is collected by 1952 photomultipliers placed at the upstream end. In this paper the characterization of the photomultipliers and the dedicated Frontend and Data Acquisition electronics are described, the time resolution and the light detection efficiency measurement are presented.
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