Measurement of parameters of scintillating bars with wavelength-shifting fibres and silicon photomultiplier readout for the SHiP Muon Detector

摘要

The light yield and the time resolution of different types of 3 m longscintillating bars instrumented with wavelength shifting fibres and read out bydifferent models of silicon photomultipliers have been measured at a test beamat the T9 area at the CERN Proton Synchrotron. The results obtained withdifferent configurations are presented. A time resolution better than 800 ps,constant along the bar length within 20%, and a light yield of ~ 140 (70)photoelectrons are obtained for bars 3 m long, 4.5 (5) cm wide and 2 (0.7) cmthick. These results nicely match the requirements for the Muon Detector of theSHiP experiment.