SMuK 2023 – scientific programme

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T: Fachverband Teilchenphysik

T 11: Neutrinos, Dark Matter I

T 11.4: Talk

Monday, March 20, 2023, 17:15–17:30, POT/0051

COSINUS: Cryogenic Search for Dark Matter With Scintillating NaI Calorimeters — •Martin Stahlberg for the COSINUS collaboration — Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München

COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) is a cryogenic dark matter direct detection experiment that aims for a model-independent cross-check of the DAMA/LIBRA claim for dark matter. Since 1995, the DAMA/LIBRA experiment is measuring a yearly modulated signal with properties that fit well to a local dark matter halo in the Milky Way. The DAMA/LIBRA target mass consists of 250 kg of sodium iodide, and the experiment reaches a significance of 13.7 sigma for its claim of a modulation. COSINUS detectors will read out both the scinitllation light signal and the heat signal caused by particle interactions. Each detector will consist of a NaI absober crystal equipped with a transition edge sensor using the remoTES design and a silicon beaker surrounding the absorber. With the dual-channel readout, which is unique for NaI , different types of interacting particles can be discriminated on an event-by-event basis. This contribution will present the status of the COSINUS experiment and its detectors.