Time resolution measurements of scintillating counters for a new NA62 trigger charged hodoscope

The results of time resolution measurements on cosmic muons with MWPC chambers as a tracking system are presented. Two options of dual SiPM readout considered: direct light collection from opposite cut corners of the scintillator and light collection using two oppositely directed bundles of WLS fibers. Two types of SiPMs are used: S10985-050C and MicroFB-60035. The best result achived using mean-time between two SiPMs. For the direct readout from 134 × 107 × 20 mm(3) scintillator time resolution σ = 300±10 ps and maximum signal arrival time spread ΔT = 1.6±0.2 ns. Using WLS fiber readout option with 265 × 107 × 30 mm(3) scintillator tile signal arrival time spread ΔT = 150±50 ps and time resolution σ = 370±10 ps.