DarkSide-20k: dark matter detection with liquid argon time projection chamber

DarkSide-20k is a dark matter direct detection experiment using a double phase time projection chamber (TPC) filled with 50 tonnes of low-radioactivity liquid argon extracted from underground sources. Based upon the success of its predecessor DarkSide-50, DarkSide-20k will achieve an unprecedented sensitivity to the weakly interacting massive particles (WIMPs). The detector will be equipped with SiPM-based cryogenic photodetectors with high photo-detection efficiency and Gd-loaded acrylic with high neutron tagging efficiency, and it will be housed at LNGS underground laboratory in Gran Sasso, Italy. This talk will give an overview of the DarkSide-20k project and the latest updates on the ongoing R&D activities.