Detector response simulation for double beta studies

The CUORE (Cryogenic Underground Observatory for Rare Events) experiment and its upgrade, CUPID (CUORE with Upgraded Particle IDentification), adopt the cryogenic calorimetric technique to search for neutrinoless double beta decay of ¹³⁰Te and ¹⁰⁰Mo, respectively. To discriminate the expected signal from other background sources, understanding the detector response to particle interactions is fundamental. For this purpose, the calorimeter response has been modeled and validated using CUORE signals. The superimposition of events close in time, referred to as pileup, is also modeled. In particular, the pileup of the two-neutrino double beta decay process is one of the main background sources for CUPID. In this talk, the framework and its application for waveform simulations and data analysis, enhanced by machine learning tools, will be shown.