Calibration strategies for the DarkSide-20k experiment

The existence of dark matter is well documented by large amounts of evidence at both galactic and cosmological scales. Weakly interactive massive particles (WIMP) are an appealing candidate in the scientific community, and an interaction of such particle with baryonic matter can be detected using rare event searches experiments. The next generation detector DarkSide-20k aims to detect such interactions using dual phase time projection chambers (TPC) technology. A careful and accurate characterization of these detectors is required to achieve their physics goals. The main calibration strategy of the DarkSide-20k is presented. The strategy is composed of two main components: the calibration sources and the deployment system. The baseline for the deployment system is a motor box connected to a guide tube system that will ensure the calibration sources are deployed at different positions surrounding the TPC. The calibration sources and some of their direct uses are: radioactive sources for position reconstruction resolution and fidualizaiton of the active volume, neutron sources to distinguish between electronic and neutron band, and distributed gas light sources to measure the light yield and light spatial uniformities in the main active volume.