Speaker
Description
Coherent elastic neutrino–nucleus scattering (CEνNS) has opened a new avenue for new-physics searches. The COHERENT collaboration leads precision measurements of CEνNS at Oak Ridge National Laboratory (ORNL); however, these measurements are currently limited by the 10% uncertainty in the neutrino flux. To better constrain the neutrino flux, we have deployed a pair of water Cherenkov detectors in Neutrino Alley, one filled with heavy water (D₂O) and one with light water (H₂O). By detecting neutrino charged-current interactions on deuterium, these detectors are expected to reduce the flux uncertainty by approximately a factor of three, while also providing valuable information relevant to supernova neutrino detection with oxygen. Following the deployment of the heavy-water detector in July 2023, the light-water detector installation was completed in January 2026. This poster presents the successful installation of the detectors, especially focusing on the recent light-water detector. It also discusses initial performance results, which are crucial for the neutrino flux measurement.