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McCarthy, Duncan

University of British Columbia

The nature of the dark matter particle is one of the most prevalent outstanding questions in particle physics. Over the past several decades, direct detection experiments have been trying to measure the properties of the dark matter particle on earth. The Global Argon Dark Matter Collaboration (GADMC) has several large-area detectors in development designed for this purpose. Due to their better cryogenic performance and higher radiopurity, Silicon PhotoMultipliers (SiPMs) are increasingly considered in these experiments over PhotoMultiplier Tubes (PMTs) to measure the scintillation light produced in particle interactions within the liquid argon detectors used. The development of passively quenched, analogue SiPMs has supported this transition. Looking forward into the future to GADMC's flagship experiment, ARGO, there is interest in applying active quenching technology in a new generation of digital SiPMs with better timing resolution and on-chip signal digitization for better signal to noise for this detector. One such device is the prototype U. Sherbrooke and Teledyne Dalsa Photon to Digital Converter (PDC). The dark noise sources and rates of this device were studied using TRIUMF's Microscope for the Injection and Emission of Light (MIEL) experiment, with the intent to better understand dark noise sources in general and to analyse the current state of digital SiPMs in the context of large-area direct dark matter detectors.

Text

2024-02-29

Attribution-NonCommercial-NoDerivatives 4.0 International

http://hdl.handle.net/2429/87491

Physics

University of British Columbia

UBCV

http://creativecommons.org/licenses/by-nc-nd/4.0/