NEWS:  First light for CEvNS, “Observation of coherent elastic neutrino-nucleus scattering” by the COHERENT collaboration, published in Science, August 3, 2017

The COHERENT collaboration aims to measure CEvNS (Coherent Elastic Neutrino-Nucleus Scattering) using the high-quality pion-decay-at-rest neutrino source at the Spallation Neutron Source in Oak Ridge, Tennessee. The SNS provides an intense flux of neutrinos in the few tens-of-MeV range, with a sharply-pulsed timing structure that is beneficial for background rejection. The CEvNS process is cleanly predicted in the Standard Model and its measurement provides a Standard Model test; furthermore, the process is involved in supernova explosion processes and supernova neutrino detection. It also represents a background floor for dark matter direct detection. In the long term, precision measurement of CEvNS will address questions of nuclear structure. We aim to deploy multiple detector technologies in a phased approach.

Funding support:

DOE Office of Science, including an award from the office’s Early Career Research Program; National Science Foundation (USA); Kavli Institute for Cosmological Physics at the University of Chicago and an endowment from the Kavli Foundation and its founder Fred Kavli; National Nuclear Security Administration Office of Defense, Nuclear Nonproliferation Research, and Development; Laboratory Directed Research and Development (LDRD) programs of Oak Ridge National Laboratory, Lawrence Berkeley and Sandia National Laboratories; Pacific Northwest National Laboratory via the National Consortium for Measurement and Signature Intelligence Research Program and Intelligence Community Postdoctoral Research Fellowship Program; Alfred P. Sloan Foundation; Consortium for Nonproliferation Enabling Capabilities; Institute for Basic Science (Korea);  Russian Foundation for Basic Research; Russian Science Foundation in the framework of MEPhI Academic Excellence Project; Triangle Universities Nuclear Laboratory; University of Washington Royalty Research Fund; and resources of the Spallation Neutron Source and the Oak Ridge Leadership Computing Facility, which are DOE Office of Science User Facilities at ORNL.

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