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Technical design of the phase I Mu3e experiment

Authors
  • Arndt, K
  • Augustin, H
  • Baesso, P
  • Berger, N
  • Berg, F
  • Betancourt, C
  • Bortoletto, D
  • Bravar, A
  • Briggl, K
  • vom Bruch, D
  • Buonaura, A
  • Cadoux, F
  • Chavez Barajas, C
  • Chen, H
  • Clark, K
  • Cooke, P
  • Corrodi, S
  • Damyanova, A
  • Demets, Y
  • Dittmeier, S
  • And 80 more
Publication Date
Oct 21, 2021
Source
UCL Discovery
Keywords
Language
English
License
Unknown
External links

Abstract

The Mu3e experiment aims to find or exclude the lepton flavour violating decay μ→eee at branching fractions above 10−16. A first phase of the experiment using an existing beamline at the Paul Scherrer Institute (PSI) is designed to reach a single event sensitivity of 2⋅10−15. We present an overview of all aspects of the technical design and expected performance of the phase I Mu3e detector. The high rate of up to 108 muon decays per second and the low momenta of the decay electrons and positrons pose a unique set of challenges, which we tackle using an ultra thin tracking detector based on high-voltage monolithic active pixel sensors combined with scintillating fibres and tiles for precise timing measurements.

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