Speaker
Description
Cryogenic scintillating calorimeters are particle detectors widely used in direct detection dark matter searches. They can measure the full, unquenched recoil energy of an interaction while simultaneously distinguishing nuclear recoils from electron recoils. This is achieved by detecting both the phonon signal and the scintillation light produced in a recoil event. Data analysis of these detectors is often challenged by high pileup rates — especially in above-ground measurements such as the one presented here for a NaI prototype of the COSINUS collaboration. In addition, recent advancements in scintillation light detectors have enabled single-photon resolution, making it necessary to model the light signal using Poisson statistics. This contribution presents a plug-and-play generalized optimum filter approach that allows reliable event triggering and accurate energy reconstruction under high pileup conditions. It also introduces a new statistical model describing recoil event distributions in the (phonon, light)-plane which correctly incorporates single photon statistics.
| Main Contribution topic | Direct detection |
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| Secondary contribution topic | Light Dark Matter |