학술논문

Technical design of the phase I Mu3e experiment
Document Type
Working Paper
Author
Arndt, K.Augustin, H.Baesso, P.Berger, N.Berg, F.Betancourt, C.Bortoletto, D.Bravar, A.Briggl, K.Bruch, D. vomBuonaura, A.Cadoux, F.Barajas, C. ChavezChen, 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.Herkert, A.Hesketh, G.Hetzel, S.Hildebrandt, M.Hodge, Z.Hofer, A.Huang, Q. H.Hughes, S.Huth, L.Immig, D. M.Jones, T.Jones, M.Kästli, H. -C.Köppel, 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.Müller, M.Meier, B.Aeschbacher, F. MeierMeneses, A.Metodiev, K.Mtchedlishvili, A.Muley, S.Munwes, Y.Noehte, L. O. S.Owen, P.Papa, A.Paraskevas, I.Períc, I.Perrevoort, A. -K.Plackett, R.Pohl, M.Ritt, S.Robmann, P.Rompotis, N.Rudzki, T.Rutar, G.Schöning, 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.Vossebeld, J.Wallny, R.Wasili, A.Wauters, F.Weber, A.Wiedner, D.Windelband, B.Zhong, T.
Source
Nuclear Instruments and Methods in Physics Research Section A: Vol. 1014 (2021) 165679
Subject
Physics - Instrumentation and Detectors
High Energy Physics - Experiment
Language
Abstract
The Mu3e experiment aims to find or exclude the lepton flavour violating decay $\mu \rightarrow eee$ 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 $2\cdot 10^{-15}$. 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 $10^{8}$ 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.
Comment: 117 pages. Minor corrections to the author list. Replaced with published version. Editor: Frank Meier Aeschbacher