Orateur
Knut Moraa
Description
Searches for dark matter below 1 GeV using solid detectors face challenging backgrounds associated with minuscule strains and stresses in the detector target and mounting. Alongside low mass and high radiopurity this makes superfluid 4He a unique target material. The TESSERACT multi-target dark matter search has demonstrated a superfluid He detector prototype which is sensitive to both scintillation light and phonon/roton signals, allowing background discrimination and electronic-to-nuclear recoil discrimination. This talk will present the achieved performance of the prototype detector as well as the planned design for the 4He-target detector that TESSERACT will operate in the Modane Underground Laboratory.
