Speaker
Description
The goal of the Mu3e experiment at the Paul Scherrer Institute (PSI, Switzerland) is to search for the rare charged-lepton flavour-violating decay $\mu^{+} \rightarrow e^{+} e^{+} e^{-}$, the observation of which would be an unambigous sign of physics beyond the Standard Model.
Aiming for the ultimate sensitivity of O($10^{-16}$), Mu3e will improve upon the previous searches by four orders of magnitude. The scintillating tile detector (SciTile), located at the end of the recurling particle trajectories, is one of the timing systems of the Mu3e experiment. The detector consists of two stations, shaped as hollow cylinders enclosing the beam pipe, realized in a modular concept. The base unit of SciTile is a $4\times4$ sensor matrix, which consists of 16 scintillating tiles and silicon photomultipliers (SiPMs) on a printed circuit board for connecting the matrix to the readout electronics.
We present the developed procedures for production of the detector components, machines used to pack the scintillating tiles in laser-cut ESR foil and assembly of the tiles onto the SiPM matrices. Furthermore, the characterization of the SiPM matrices, including testing the basic parameters such as breakdown voltage, gain and noise, as well as the characterization of the fully assembled SciTile matrices will be discussed. Finally, the performance of the SciTile detector within the setup of the Mu3e experiment at PSI using cosmic data will be presented.
| Primary experiment | Mu3e |
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