Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 104: Search for Dark Matter V

T 104.1: Vortrag

Freitag, 4. April 2025, 09:00–09:15, VG 4.102

A digital SiPM in liquid xenon — •Tiffany Luce¹, Michael Keller², and Peter Fischer² — ¹Physikalisches Institut, Universität Freiburg, 79104 Freiburg, Germany — ²Institute for Computer Engineering, Heidelberg University, Germany

Silicon PhotoMultipliers (SiPMs) are photosensors commonly used in many experiments. However, achieving single-photon sensitivity in the experiments is limited by the high dark count rate (DCR) of these devices. Digital SiPMS, where the digitization happens directly on the chip, can show DCRs competitive to that of traditional photomultiplier tubes (PMTs) with the added benefit of not needing analog to digital converters and greatly reducing the data rate. This would open up to cheaper and thus larger systems. We present results of the first test of a digital SiPM in cryogenic liquid xenon, one of the most important detector target for dark matter searches.

Keywords: digital SiPM; liquid xenon