Measurement of CEvNS with COHERENT at the ORNL SNS

The COHERENT collaboration is measuring coherent elastic neutrino-nucleus scattering (CEvNS) using the high-power, pulsed neutrino source provided by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL).   The first measurement of the process was reported in 2017 using a 14.6 kg CsI detector.  In addition, three other technologies are being deployed to complement this first observation: p-type point-contact  germanium  detectors,  single-phase  liquid  argon,  and  NaI[Tl]  crystals.  All detectors are/will be deployed in the neutron-quiet area of the SNS target building 20-30 m from the neutrino source.  A definitive observation of this process requires detection of low-energy nuclear recoil events on a variety of targets so as to demonstrate the characteristic N² dependence of the CEvNS cross section.   More precise measurements of CEvNS from ton-scale detectors will provide insight on additional topics such as: non-standard interactions, supernovae, nuclear form-factors, and dark matter.  The physics motivation and the discovery of the CEvNS process will be presented along with current status and future plans of the COHERENT experiment.