This proposal is a request for funds for the development of a unique instrument for the study of coherent elastic neutrino-nucleus scattering (CEvNS) on germanium. This interaction produces very low energy nuclear recoils, the measurement of which requires very sensitive detection technology. The proposed detector array will be part of the suite of detectors deployed by the entire COHERENT collaboration in "Neutrino Alley," a basement hallway at the Spallation Neutron Source (SNS), to be irradiated in the intense, high-quality neutrino source available only there.
The collaboration will make use of the detector array for at least several years for measurements of CEvNS. The detector array will be optimized for the SNS environment, which will require a specific shielding configuration to handle the neutron and radiological backgrounds present there. The addition of a muon particle veto detector will assist in the removal of background interactions from the analysis of the germanium detector signals. NCCU is responsible for the construction, testing and calibration of the muon veto detector. In addition, NCCU students will participate in the deployment of the germanium detector array at ORNL.