Ponente
Descripción
The TESSERACT experiment, a novel and fully funded new type of low-mass DM experiment, is achieving new sensitivities in the search for sub-GeV dark matter. We're deploying multiple complementary targets read out via ultra-sensitive TES-based athermal phonon detectors Each detector is uniquely tailored to detect nuclear-, electron-, and dark photon-type dark matter interactions. By using different targets such as liquid helium (HeRALD) and the polar crystals GaAs and Sapphire (SPICE), and ensuring identical readout and experimental settings across all detectors, TESSERACT will achieve both, unparalleled sensitivity and a the capability to identify and discriminate against novel backgrounds. While full operations will begin at the Modane underground laboratory in 2029, we've already performed first dark matter searches on the surface, achieving leading low-mass sensitivities. We will present the current status of the experiments and sensors, discuss new insights into the "low energy excess background," and highlight the first sensitivities obtained from our surface background runs.
