Speaker
Description
The Coherent elastic neutrino-nucleus scattering (CEvNS) was first predicted in 1974. It is the dominant neutrino scattering process below 100MeV. Though CEvNS has the most significant cross-section of low-energy neutrino scatterings, it has eluded detection for over 40 years due to technical difficulties in building low-energy thresholds and low background detectors. In 2017 and 2021, the COHERENT collaboration eventually discovered the CEvNS on CsI and argon targets for the first time using the neutrinos from the Spallation Neutron Source at Oak Ridge National Laboratory (ORNL). The measured result is consistent with the Standard Model prediction, but still shows ~30% statistical uncertainty in the cross-section. Seoul National University is one of the leading institutions of the COHERENT collaboration. We built a 1-ton scale liquid argon CEvNS detector in Korea and finished basic tests. The detector has recently moved to ORNL for further testing and commissioning. This poster will report on the progress of CENNS-1ton detector development at ORNL.
