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20–26 Aug 2023
Natural Science Lecture Center (building-28), Seoul National University, Korea
Asia/Seoul timezone

Status of Mu3e Phase 1

22 Aug 2023, 14:30
30m
Natural Science Lecture Center (building-28), Seoul National University, Korea

Natural Science Lecture Center (building-28), Seoul National University, Korea

Natural Science Lecture Center Seoul National University Building-28, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
Oral WG4: Muon Physics parallel (room#301)

Speaker

Martin Müller (JGU Mainz)

Description

The Mu3e experiment will search for the charged lepton flavour violating decay μe+ee+ and is based at the Paul Scherrer Institute (PSI). It aims to achieve a sensitivity of one in O(1015) moun decays in phase 1 and one in 1016 muon decays in phase 2, which is four orders of magnitude more sensitive than the previous measurement conducted by the SINDRUM experiment. Any observation of this decay would be a clear sign for new physics, since it is highly suppressed in the Standard Model to a branching ratio of below O(1054).

The Mu3e detector will use four layers of thin Mupix sensors (high voltage monolithic active pixel sensors, HV-MAPS) to track electrons and positrons. A time resolution of O(100ps) will be provided by scintillating tile and fibre detectors, which are coupled to SiPMs and read out by the Mutrig chip. A FPGA-based, triggerless DAQ system will collect data from these detectors, which will then be reconstructed in a GPU filter farm.

With Mupix11 and Mutrig3 the sensor developement for phase 1 has concluded and the collaboration has performed engineering runs with a fist prototype of the inner detector region in order to validate a variety of systems and to identify potential issues. With the experience gained from the engineering runs the collaboration is now in the process of constructing the phase 1 detector.

The talk will present the design of the detecor and readout system and discuss the ongoing activities for Mu3e phase 1.

Author

Martin Müller (JGU Mainz)

Presentation materials