Time calibrations of scintillation detectors for the MUSE experiment

The MUSE experiment at the Paul Scherrer Institute is measuring elastic lepton-proton scattering cross sections in a four-momentum transfer range from Q² of approximately 0.002 to 0.08 GeV², using both positively and negatively charged electrons and muons. MUSE utilizes plastic scintillators in beam-hodoscope, beam-monitor, scattered-particle, and veto detectors. The detectors are used in the trigger of the data acquisition, to identify the beam particle type and momentum, to reconstruct particle hit positions, and in the selection of the reaction. An overview of the calibration of those detectors, including the determination of time offsets, time-walk corrections, and the effective speed of light, will be presented.