"The COHERENT Neutrino Program at the ORNL Spallation Neutrino Source"

Tyler Johnson , Duke University
[Host: Craig Group]

The discovery of coherent elastic neutrino-nucleus scattering (CEvNS) was made by the COHERENT Collaboration in 2017 using a CsI[Na] scintillating crystal at Oak Ridge National Laboratory's Spallation Neutron Source (SNS). This observation was made over 40 years after the theoretical prediction by Freedman et al. and consists of a neutral-current neutrino-nucleus interaction on an entire nucleus as a whole. The CEvNS process is the dominant scattering mode below 100 MeV and serves as a fertile testbed for precisely examining the Standard Model and has applications in nuclear reactor monitoring and stellar astrophysics. COHERENT built out the CEvNS physics program to include detector systems using liquid argon (CENNS-10), germanium (GeMini) and NaI[Tl] crystals (NaIvEte)--of which liquid argon successfully yielded an additional CEvNS measurement. The variety of media studied within the COHERENT detector suite works towards establishing the predicted N^2 dependence of the CEvNS cross section. Additionally, the COHERENT Collaboration houses several detector systems aimed at elucidating inelastic neutrino-nucleus interactions in support of CEvNS searches and as standalone investigates of neutrino-induced nuclear reactions. This presentation will consist of both the published results and the ongoing work being done on new detectors to further advance the physics goals of the collaboration. 

High Energy Physics Seminar
Wednesday, October 5, 2022
4:00 PM
Chemistry Building, Room 206

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Meeting ID: 922 8790 9487   Passcode: HEPseminar

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