Design of a muon-veto system for the CUPID experiment

The CUORE Upgrade with Particle Identification (CUPID) experiment will supersede the CUORE experiment, a ton-scale detector currently looking for neutrinoless double beta ($0\nu\beta\beta$) decay at Laboratori Nazionali del Gran Sasso (LNGS) in Italy. CUPID will cover the full neutrino mass regime in the Inverted Ordering (IO) scenario, as well as the portion of the Normal Ordering (NO) regime with $m_{\text{lightest}}>10\,$meV. In order to achieve CUPID’s goal, backgrounds will need to be reduced by a factor of 100 compared to CUORE. One type of background events are those induced by cosmogenic muons interacting with the detector or its surroundings. In this talk I will describe the design and current efforts towards the construction of an active muon-tagger which will reduce the muon-induced background by multiple orders of magnitude, thus allowing CUPID to meet its target background budget.