Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 66: DAQ, trigger and electronics III

T 66.3: Talk

Wednesday, March 17, 2021, 16:30–16:45, Tp

Hit synchronisation in the Mu3e DAQ — •Marius Köppel for the Mu3e collaboration — PRISMA+ Cluster of Excellence and Institute of Nuclear Physics, Johannes Gutenberg University, Mainz Germany

The Mu3e experiment at the Paul Scherrer Institute searches for the decay µ⁺ → e⁺ e⁺ e⁻. This decay violates lepton flavour conservation - any observation would be a clear indication for Physics Beyond the Standard Model. The Mu3e experiment aims for an ultimate sensitivity of one in 10¹⁶ µ decays. To this end, more than one billion µ tracks per second need to be detected and reconstructed.

Since the corresponding data of about 1TB/s cannot be saved to disk, a trigger-less online readout system is required which is able to sort, align and analyze the data while running. A farm with PCs equipped with powerful graphics processing units (GPUs) will perform the data reduction. The talk presents the ongoing integration of the sub detectors into the Field Programmable Gate Array (FPGA) based readout system and the hit synchronisation between different parts of the detector.