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T: Fachverband Teilchenphysik

T 22: Trigger und DAQ I

T 22.4: Vortrag

Montag, 29. Februar 2016, 11:45–12:00, VMP11 HS

Data Acquisition at the Front-End of the Mu3e Pixel Detector — •Ann-Kathrin Perrevoort for the Mu3e collaboration — Physikalisches Institut, Universität Heidelberg

The Mu3e experiment—searching for the lepton-flavour violating decay of the muon into three electrons at an unprecedented sensitivity of one in 10¹⁶ decays—is based on a pixel tracking detector. The sensors are High-Voltage Monolithic Active Pixel Sensors, a technology which allows for very fast and thin detectors, and thus is an ideal fit for Mu3e where the trajectories of low-momentum electrons at high rates are to be measured.

The detector will consist of about 275 million pixels and will be operated at up to 10⁹ muon stops per second. Therefore, a fast and trigger-less data readout is required. The pixel sensors feature zero-suppressed data output via high-speed serial links. The data is then buffered and sorted by time on a FPGA on the front-end before being processed to the following readout stage.

In this talk, the readout of the Mu3e pixel detector at the front-end will be introduced. Furthermore, a first firmware implementation of this concept in a beam telescope consisting of the current pixel sensor prototype MuPix7 will be presented.