Speaker
Description
The ν-Angra experiment operates a surface-level, ton-scale water Cherenkov detector at the Angra-II nuclear power plant. The successful operation of the detector has provided a validated platform for reactor antineutrino detection and non-intrusive reactor monitoring. Building on this operational experience, we investigate the feasibility of a second experimental phase based on a cryogenic calorimetric detector aimed at the experimental observation of Coherent Elastic Neutrino–Nucleus Scattering (CEvNS). We present simulation studies of CEvNS event rates for reactor neutrinos at short baselines, exploring different target materials and detector masses, with emphasis on the strong scaling of the coherent crosssection with the neutron number of the target nucleus. A physics-informed modeling of nuclear recoils, phonon production and transport in cryogenic crystals is performed using Monte Carlo techniques, including quenching, phonon propagation and detector response. The simulation results define requirements that are compatible with quantum sensor technologies, such as Transition Edge Sensors and Kinetic Inductance Detectors, targeting sub-eV to few-eV energy thresholds. These results indicate that a compact cryogenic detector, operated within the existing ν-Angra infrastructure, can open a new window for low-energy neutrino physics at a commercial nuclear reactor, with sensitivity to Standard Model CEvNS and potential deviations at low energies.
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