Technical design of the phase I Mu3e experiment

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Arndt, K, Augustin, H, Baesso, P, Berger, N, Berg, F, Betancourt, C, Bortoletto, D, Bravar, A, Briggl, K, vom Bruch, D et al (show 95 more authors) , Buonaura, A, Cadoux, F, Barajas, C Chavez, Chen, H, Clark, K, Cooke, P, Corrodi, S, Damyanova, A, Demets, Y, Dittmeier, S, Eckert, P, Ehrler, F, Fahrni, D, Gagneur, S, Gerritzen, L, Goldstein, J, Gottschalk, D, Grab, C, Gredig, R, Groves, A, Hammerich, J, Hartenstein, U, Hartmann, U, Hayward, H ORCID: 0000-0002-0972-3411, Herkert, A, Hesketh, G, Hetzel, S, Hildebrandt, M, Hodge, Z, Hofer, A, Huang, QH, Hughes, S, Huth, L, Immig, DM, Jones, T ORCID: 0000-0002-2580-1977, Jones, M, Kaestli, H-C, Koeppel, M, Kettle, P-R, Kiehn, M, Kilani, S, Klingenmeyer, H, Knecht, A, Knight, A, Kotlinski, B, Kozlinskiy, A, Leys, R, Lockwood, G, Loreti, A, La Marra, D, Mueller, M, Meier, B, Aeschbacher, F Meier, Meneses, A, Metodiev, K, Mtchedlishvili, A, Muley, S, Munwes, Y, Noehte, LOS, Owen, P, Papa, A, Paraskevas, I, Peric, I, Perrevoort, A-K, Plackett, R, Pohl, M, Ritt, S, Robmann, P, Rompotis, N ORCID: 0000-0003-2577-1875, Rudzki, T, Rutar, G, Schoening, A, Schimassek, R, Schultz-Coulon, H-C, Serra, N, Shen, W, Shipsey, I, Shrestha, S, Steinkamp, O, Stoykov, A, Straumann, U, Streuli, S, Stumpf, K, Tata, N, Velthuis, J, Vigani, L, Vilella-Figueras, E ORCID: 0000-0002-7865-2856, Vossebeld, J, Wallny, R, Wasili, A, Wauters, F, Weber, A, Wiedner, D, Windelband, B and Zhong, T (2021) Technical design of the phase I Mu3e experiment NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1014. 165679-. ISSN 0168-9002, 1872-9576

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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.

Item Type:	Article
Additional Information:	117 pages. Minor corrections to the author list. Replaced with published version. Editor: Frank Meier Aeschbacher
Uncontrolled Keywords:	Lepton flavour violation, Muon decays, Monolithic pixel detector, Scintillating fibres, Scintillating tiles
Divisions:	Faculty of Science & Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	09 Aug 2021 08:02
Last Modified:	16 Jun 2026 14:58
DOI:	10.1016/j.nima.2021.165679
Open Access URL:	https://www.sciencedirect.com/science/article/pii/...
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3114856
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