The COHERENT Experiment: A Walk Down Neutrino Alley

• Emma van Nieuwenhuizen

The COHERENT experiment at Oak Ridge National Laboratory, Tennessee consists of a series of compact detector systems to study coherent elastic neutrino-nucleus scattering (CEvNS), a well-predicted Standard Model process that eluded detection for over 40 years. COHERENT achieved the first observation of CEvNS using pion decay-at-rest neutrinos from the Spallation Neutron Source, whose pulsed beam structure enables powerful background rejection through predictable neutrino arrival times. Since 2017, CEvNS has been observed by COHERENT on CsI[Na] scintillator, liquid argon, and most recently with Ge-mini, a 16-kg array of high-purity germanium semiconductor detectors. As the collaboration moves into an era of precision CEvNS measurements, I will present an overview of COHERENT’s expanding scientific program and highlight the latest germanium results.