# VCI2019 - The 15th Vienna Conference on Instrumentation

Feb 18 – 22, 2019
Vienna University of Technology
Europe/Vienna timezone

## Test Measurements with the Technical Prototype for the Mu3e Tile Detector

Not scheduled
15m
Vienna University of Technology

#### Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 61
Poster Photon Detectors

### Speaker

Hannah Klingenmeyer (Kirchhoff Institute for Physics, Heidelberg University)

### Description

The Tile Detector is a dedicated timing detector system developed for the Mu3e experiment, which is designed to search for the lepton-flavour violating (LFV) decay $\mu \rightarrow eee$ with a target sensitivity of $10^{-16}$. In order to determine the vertex of the three decay electrons, precise spatial and timing measurements are necessary, resulting in the requirement of a time resolution below 100 ps for the Tile Detector.
The Tile Detector, which is currently under development, employs plastic scintillator tiles and silicon photomultipliers, which are read out by dedicated 32-channel ASICs. Measurements using the first technical prototype of the Tile Detector in two testbeam campaigns, undertaken at the Deutsches Elektron-Synchrotron (DESY) in Hamburg, Germany in February and June 2018, show a preliminary single channel timing resolution of the order of 40 ps, which is well below the required resolution of 100 ps.
Furthermore, the production and assembly procedures for the final detector system were defined and finalised based on the experience gained from the construction of the prototype. Thermal simulation and measurement studies using the prototype provided additional input for the finalisation of the detector structure.

### Primary authors

Hannah Klingenmeyer (Kirchhoff Institute for Physics, Heidelberg University) Hans-Christian Schultz-Coulon (Ruprecht Karls Universitaet Heidelberg (DE)) Mr Huangshan Chen (Ruprecht-Karls-Universität Heidelberg) Konrad Briggl (Heidelberg University) Tiancheng Zhong (Kirchhoff Institute for Physics) Dr Wei Shen (Heidelberg University, Kirchhoff Institute for Physics) Yonathan Munwes (Ruprecht Karls Universitaet Heidelberg (DE))