Overview

• CONUS+ recorded an excess of 395 ± 106 coherent elastic neutrino–nucleus scattering events over 119 days using a 3 kg germanium detector positioned 20.7 m from the Leibstadt reactor core.
• The observed neutrino energies are the lowest ever measured for CEvNS, extending experimental sensitivity to low-energy neutrino interactions.
• Measured event rates agree with theoretical calculations from the Standard Model within the reported uncertainties.
• The successful deployment of a kilogram-scale setup marks a shift from tonne-scale neutrino detectors, demonstrating the feasibility of compact precision instruments.
• Future upgrades aim to boost measurement accuracy and enable mobile reactor monitoring applications with portable neutrino detectors.