  The NUCLEUS experiment aims to perform a high-precision measurement of
Coherent Elastic Neutrino-Nucleus Scattering (CEvNS) at the EdF Chooz B nuclear
power plant in France. CEvNS is a unique process to study neutrino properties
and to search for physics beyond the Standard Model. The study of CEvNS is also
important for light Dark-Matter searches. It could be a possible irreducible
background for high-sensitivity Dark-Matter searches. NUCLEUS is an experiment
under construction based on ultra-low threshold (20 eVnr) cryogenic
calorimeters, operated at tens-of-mK temperatures.
