Abstract
The Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is a pulsed source of neutrons and, as a by-product of this operation, an intense source of pulsed neutrinos via stopped-pion decay. The COHERENT collaboration uses this source to investigate coherent elastic neutrino-nucleus scattering and other physics with a suite of detectors. This work includes a description of our geant4 simulation of neutrino production at the SNS and the flux calculation which informs the COHERENT studies. We estimate the uncertainty of this calculation at the ∼10% level based on validation against available low-energy π+ production data.
| Original language | English |
|---|---|
| Article number | 032003 |
| Journal | Physical Review D |
| Volume | 106 |
| Issue number | 3 |
| DOIs | |
| State | Published - Aug 1 2022 |
Funding
The COHERENT collaboration acknowledges the resources generously provided by the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. This work was supported by the US Department of Energy (DOE), Office of Science, Office of High Energy Physics and Office of Nuclear Physics; the National Science Foundation; the Consortium for Nonproliferation Enabling Capabilities; the Korea National Research Foundation (NRF Grant No. 2022R1A3B1078756); the Ministry of Science and Higher Education of the Russian Federation (Project “Fundamental properties of elementary particles and cosmology” No. 0723-2020-0041); and the U.S. DOE Office of Science Graduate Student Research (SCGSR) program, administered for DOE by the Oak Ridge Institute for Science and Education which is in turn managed by Oak Ridge Associated Universities. The authors would also like to thank the Undergraduate Research Office of Carnegie Mellon University for their support on this project. Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia LLC, a wholly owned subsidiary of Honeywell International Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under Contract No. DE-NA0003525. The Triangle Universities Nuclear Laboratory is supported by the U.S. Department of Energy under Grant No. DE-FG02-97ER41033. Laboratory Directed Research and Development funds from Oak Ridge National Laboratory also supported this project. This research used the Oak Ridge Leadership Computing Facility, which is a DOE Office of Science User Facility.