Project Details
Projekt
Searching for charged lepton flavour violation with the Mu3e experiment - Scintillating Tile Detector
Subject Area
Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
Term
since 2021
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 443478861
The proposed project will be carried out in the context of the Mu3e experiment currently under construction at the Paul Scherrer Institute (PSI) in Switzerland. The goal of the Mu3e experiment is to search for the rare charged lepton flavor violating decay μ ➛ eee in its first phase aiming for a single event sensitivity (SES) of BR(μ ➛ eee) ≈ 2-3 × 10E-15; this corresponds to an improvement of a factor 200 compared to the existing bound. In a second phase -- after the installation of the new High Intensity Muon Beamline (HIMB) at PSI and a corresponding upgrade of the experiment -- an ultimate sensitivity of O(10E-16) shall be achieved. The Kirchhoff-Institut für Physik at Heidelberg University (HD-KIP) is a member of the Mu3e collaboration since the beginning and has contributed to the original research proposal as well as the technical design report. The overall schedule and physics motivation for the Mu3e experiment is described in detail in the renewal application for the Mu3e Research Unit (RU). This proposal outlines the planned work at HD-KIP required to finalize, commission and operate the Mu3e timing system, which consists of the scintillating tile (SciTile) and the scintillating fibre detector (SciFi); it also proposes R&D work to prepare for the second phase (Mu3e Phase II) of the experiment. The SciTile detector has been fully developed at HD-KIP, and first SciTile modules are presently being validated. In addition, HD-KIP provides the so-called MuTRiG ASIC, which is used as front-end chip for both timing detectors. SciFi and SciTile detector together provide the Mu3e timing information that rejects backgrounds from random coincidences faking three-electron signal events. In detail, the work to be done by the HD-KIP group during the second funding period of the RU comprises: completion and commissioning of the SciTile detector, finalization and validation of the front-end readout, detector operation and data taking as well as synchronization of the Mu3e timing system. In addition, the HD-KIP group will participate in the analysis of the recorded Mu3e data and pursue R&D work preparing for the Phase II upgrade of the timing system.
DFG Programme
Research Units
Co-Investigator
Dr. Konrad Briggl
