Modular TES-based readout for ton-scale neutrino experiments based on cryogenic calorimeters*

Neutrinos are elusive particles whose nature and properties are still mysterious. Precision measurements of coherent elastic neutrino-nucleus scattering and experiments searching for neutrinoless double beta decay are expected to reveal more information about neutrino interactions with nucleons, its magnetic moment, its nature (Majorana or Dirac), its mass ordering and scale. The next generation of experiments employing cryogenic calorimeters - like Ricochet phase-II and CUPID-1T - will require thousands of detectors to increase the sensitivity of the experiments to new physics. A TES-based read out, thanks to its adaptability to a multiplexed readout, is a very promising technology to scale up the mass while limiting the heat introduced in the cryogenic system by the cabling. A modular TES design has been developed in a collaboration of Northwestern University and Argonne National Laboratory. It can be easily mass produced and employed with different target materials. In this talk, we will present the first demonstration of a Li₂MoO₄ detector equipped with a TES-based readout.