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Study of dark counts in optical superconducting transition-edge sensors

Laura ManentiCarlo PepeIsaac Sarnoff ...+11 Mauro Rajteri
Feb 2024
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摘要原文
Superconducting transition-edge sensors (TESs), known for their high single-photon detection efficiency and low background, are increasingly being used in rare event searches. We present the first comprehensive characterization of optical TES backgrounds, identifying three event types: high-energy, electrical noise, and photon-like events. We experimentally verify and simulate the source of the high-energy events. We develop an algorithm to isolate photon-like events, the expected signal in dark matter searches, achieving record-low photon-like dark count rates in the 0.8-3.2 eV energy range.
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