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Hamburg 2016 – scientific programme

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T: Fachverband Teilchenphysik

T 42: Trigger und DAQ II

T 42.7: Talk

Monday, February 29, 2016, 18:15–18:30, VMP11 HS

Flex-prints for the Mu3e experiment — •Sebastian Dittmeier for the Mu3e collaboration — Physikalisches Institut, Universität Heidelberg

Mu3e is a novel experiment dedicated to the search for the charged lepton flavor violating decay µ+e+ee+ with a targeted sensitivity of a branching ratio (BR) down to 10−16. Within the standard model of particle physics this process is extremely suppressed to BR<10−54. Thus, any observation would be a clear sign for new physics beyond the standard model. The Mu3e detector consists of a silicon pixel tracking detector using the novel HV-MAPS (High Voltage Monolithic Active Pixel Sensor) technology to measure the momentum of the decay products, and scintillating fibres and tiles for precise timing. The pixel sensors are thinned to 50 µ m to achieve a material budget of about 0.1% radiation length per tracking layer. The pixel sensors are powered and connected to readout frontend boards using custom designed flex-prints, which are low material interconnects with a high signal density. We present studies of high speed data transmission up to 3.2 Gb/s over flex-print prototypes produced in-house. The design of the flex-prints for the Mu3e detector will be discussed. A 3-layer design including power, ground and slow control distribution, as well as 9 1.25 Gb/s data transmission lines for the readout of the pixel sensors is foreseen.

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