The Mu3e Data Acquisition

Heiko Augustin; Niklaus Berger; Alessandro Bravar; Konrad Briggl; Huangshan Chen; Simon Corrodi; Sebastian Dittmeier; Ben Gayther; Lukas Gerritzen; Dirk Gottschalk; Ueli Hartmann; Gavin Hesketh; Marius Köppel; Samer Kilani; Alexandr Kozlinskiy; Frank Meier Aeschbacher; Martin Müller; Yonathan Munwes; Ann-Kathrin Perrevoort; Stefan Ritt; André Schöning; Hans-Christian Schultz-Coulon; Wei Shen; Luigi Vigani; Dorothea vom Bruch; Frederik Wauters; Dirk Wiedner; Tiancheng Zhong

doi:10.1109/tns.2021.3084060

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arXiv · 2010.15648

The Mu3e Data Acquisition

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Abstract

The Mu3e experiment aims to find or exclude the lepton flavour violating decay $\mu^+\to e^+e^-e^+$ with a sensitivity of one in 10$^{16}$ muon decays. The first phase of the experiment is currently under construction at the Paul Scherrer Institute (PSI, Switzerland), where beams with up to 10$^8$ muons per second are available. The detector will consist of an ultra-thin pixel tracker made from High-Voltage Monolithic Active Pixel Sensors (HV-MAPS), complemented by scintillating tiles and fibres for precise timing measurements. The experiment produces about 100 Gbit/s of zero-suppressed data which are transported to a filter farm using a network of FPGAs and fast optical links. On the filter farm, tracks and three-particle vertices are reconstructed using highly parallel algorithms running on graphics processing units, leading to a reduction of the data to 100 Mbyte/s for mass storage and offline analysis. The paper introduces the system design and hardware implementation of the Mu3e data acquisition and filter farm.

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Heiko Augustin, Niklaus Berger, Alessandro Bravar, Konrad Briggl, Huangshan Chen, Simon Corrodi, Sebastian Dittmeier, Ben Gayther, Lukas Gerritzen, Dirk Gottschalk, Ueli Hartmann, Gavin Hesketh, Marius Köppel, Samer Kilani, Alexandr Kozlinskiy, Frank Meier Aeschbacher, Martin Müller, Yonathan Munwes, Ann-Kathrin Perrevoort, Stefan Ritt, André Schöning, Hans-Christian Schultz-Coulon, Wei Shen, Luigi Vigani, Dorothea vom Bruch, Frederik Wauters, Dirk Wiedner, Tiancheng Zhong. 2020-10-29. The Mu3e Data Acquisition. https://doi.org/10.1109/tns.2021.3084060

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