Mu3e is a dedicated experiment searching for the charged lepton-flavour violating decay µ+ -> e+ e+ e-. The experiment consists of three subdetectors: A central barrel tracking device realised as two double layers of HV-CMOS pixel detectors, a scintillating fibre detector for timing measurements in the central region and a scintillating tile detector for timing in the end regions.
The scintillating detectors are read out by a mixed-mode ASIC named MuTRiG. This year, we operated a telescope made up of four scintillating fibre ribbon prototypes read out by 16 MuTRiGs.
First results of the performance of this fibre telescope will be presented.