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Bonn 2020 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 40: DAQ, trigger and electronics II

T 40.5: Vortrag

Dienstag, 31. März 2020, 18:00–18:15, L-3.015

DC-DC converter for powering the Mu3e detector — •Sophie Gagneur1, Thomas Rudzki2, Frederik Wauters1, and Niklaus Berger1 for the Mu3e collaboration — 1Institut für Kernphysik Johannes Gutenber-Universität, Mainz — 2Physikalisches Institut Heidelberg

The Mu3e experiment under construction at the Paul Scherrer Institute, Switzerland, aims to measure the lepton flavour violating decay of a muon into one electron and two positrons with an ultimate sensitivity of one in 1016 muon decays.

The detector for the Mu3e experiment consists of High-Voltage Monolithic Active Pixel Sensors (HV-MAPS) combined with scintillating tiles and fibres. The detector ASICs need a supply voltage of around 2 V. This voltage is going to be generated from the 20 V external supply via DC-DC converters. These buck converters must be able to operate within a magnetic field and provide a constant output voltage with a ripple of less than 10 mV to guarantee a proper operation of the pixel sensors and timing detectors. This will be achieved by the use of custom air coils, the implementation of additional output filters and an optimized PCB design. The first version of the converter has been successfully tested with the MuPix8 prototype pixel sensor.

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