SMuK 2023 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 147: Pixel/HV-Maps, Si/Diamond
T 147.2: Vortrag
Donnerstag, 23. März 2023, 17:45–18:00, REC/C213
Charge Deposition and Charge Collection in HV-MAPS — •Ruben Kolb for the HD-HVMAPS collaboration — Physikalisches Institut Universität Heidelberg
Modern particle physics experiments have an ever growing demand on high rate detectors which combine precise spatial and time resolu- tion. These requirements are met by the High Voltage - Monolithic Active Pixel Sensor (HV-MAPS). It combines active detector volume and readout on one chip. Currently, the first tracking detector using ultra thin HV-MAPS is under construction for the Mu3e experiment. The Run2021V2 chip is an HV-MAPS test chip which includes in- pixel electronics such as an amplifier and comparator. It is the most advanced HV-MAPS chip presently available.
The charge deposition and charge collection process in this sensor is investigated to improve the further design of HV-MAPS. The signal was studied in dependency of high voltage for a 4 GeV electron beam, 5.9 keV photons from a 55Fe and electrons from a 90Sr source. A complementary study using a test circuit to inject charge directly into the amplifier was performed.