SABRE, a sodium iodide detector for direct search of dark matter in a NaI scintillating crystal array.
The interaction rate of hypothesized dark-matter particles in an Earth bound detector is expected to undergo an annual modulation due to the planet's orbital motion. The SABRE experiment aims to search for such a modulation by developing highly pure crystal detectors with very low radioactivity and deploying them in an active veto detector that can reject key backgrounds in a dark-matter measurement. The final layout of SABRE will consist in a pair of twin detectors at LNGS (Laboratori Nazionali del Gran Sasso, Italy) and SUPL (Stawell Underground Physics Laboratory, Australia). SABRE seeks to provide a model-independent test of the long-standing results from the DAMA/LIBRA experiment, that has observed an annual modulation with high significance in an array of scintillating NaI(Tl) crystals. Indeed, the combined analysis of data sets from the two hemispheres will allow to identify any terrestrial contribution to the modulating signal. The installation of the first phase of SABRE, called the SABRE Proof of Principle (PoP) has just started at LNGS. In this contribution, the status report of the SABRE PoP at LNGS will be presented.