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Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 51: Halbleiterdetektoren III

T 51.4: Talk

Wednesday, March 27, 2019, 16:45–17:00, H03

Time Resolution of the Mupix8, a large HV-MAPS prototype — •Jan Hammerich for the Mu3e collaboration — Physikalisches Institut, Universität Heidelberg

The Mu3e experiment is searching for the charged lepton flavor violating (cLFV) decay µ → eee with a planned sensitivity of 2 in 1015 decays for phase I. To achieve such a sensitivity, a fast, high resolution tracking detector is required which has a material budget of 0.1 % per tracking layer to reduce multiple Coulomb scattering.
A suitable technology for these requirements is the High Voltage Monolithic Active Pixel Sensor (HV-MAPS) concept. It combines fast charge collection via drift with a fully monolithic architecture of sensor and readout in one chip which can be thinned to 50 µ m.
The MuPix8 is the first large scale HV-MAPS prototype for Mu3e with a size of 1 × 2 cm2. It features circuitry to measure charge information which is used to correct for time walk. The time resolution of the system using time walk correction is presented.

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