Technical design of the phase I Mu3e experiment

Technical design of the phase I Mu3e experiment

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...

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Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2021-10, Vol.1014, p.165679, Article 165679
Hauptverfasser: 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., 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., 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., Lockwood, G., Loreti, A., La Marra, D., Müller, M., Meier, B., Meier Aeschbacher, F., Meneses, A., Metodiev, K., Mtchedlishvili, A., Muley, S., Munwes, Y., Noehte, L.O.S., Owen, P., Papa, A., Paraskevas, I., Perić, 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., Wasili, A., Wauters, F., Wiedner, D., Windelband, B., Zhong, T.
Format: Artikel
Sprache:eng
Schlagworte:
Lepton flavour violation
Monolithic pixel detector
Muon decays
Scintillating fibres
Scintillating tiles
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Zusammenfassung: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.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2021.165679