Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 18: DAQ und Trigger I

T 18.5: Talk

Monday, March 25, 2019, 17:05–17:20, ST 2

Data flow in the Mu3e filter farm — •Marius Köppel — Institute for 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 the lepton flavour conservation - so 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 1 TB/s cannot be saved to disk, a trigger-less on line readout system needs to be designed which is able to 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 Field Programmable Gate Array (FPGA) based system which is used to preprocess, sort and transport the data from the detector to the filter farm.