COHERENT at the SNS

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.

UT-Battelle manages ORNL for DOE’s Office of Science. The single largest supporter of basic research in the physical sciences in the United States, the Office of Science is working to address some of the most pressing challenges of our time. For more information, please visit www.science.energy.gov