A Low-Temperature Energy Calibration System for the CUORE Bolometric Double Beta-Decay Experiment

CUORE, the Cryogenic Underground Observatory for Rare Events, is a next-generation experiment to search for neutrinoless double beta-decay in $^{130}$Te. Using an array of 988 TeO$_{2}$ crystals at 10~mK with a total mass of $^{130}$Te of 204~kg, CUORE will search for an excess of events above background near the Q-value of 2530~keV and probe the effective neutrino mass with a sensitivity of a few tens of meV. A precise measurement of the event energy with the bolometer array is crucial for the identification of candidate double beta-decay events. A novel, low-temperature calibration system with ultra-low background is being developed to perform a precise calibration of the energy response of each of the 988 TeO$_{2}$ crystals in the CUORE bolometer array. We present the design, expected performance, and experimental challenges of this low-temperature calibration system.