Measurement of the expected 57keV neutron anti-resonance in $^{40}$Ar using a time of flight neutron beam
POSTER
Abstract
A measurement of the transmission coefficient for neutrons through a thick ($\sim 3$\,atoms/b) natural liquid argon target in the energy range 40-70 keV will be performed by the Argon Resonance Transmission Interaction experiment (ARTIE) using a time of flight neutron beam at Los Alamos National Laboratory (LANL) In this energy range theory predicts an anti-resonance in the $^{40}$Ar cross section near $57$\,keV, but the existing data, coming from an experiment performed in the 90s (Winters. et al.), does not support this The goal of ARTIE is to resolve this disagreement by improving the knowledge of neutron transport in argon. This measurement is crucial for the Deep Underground Neutrino Experiment (DUNE) because it provides a viable means of calibration via a Pulsed Neutron Source (PNS), and allows a deeper understanding of signals and backgrounds for the low energy science program
*Funding for the ARTIE target and related hardware systems come from the DOE Office of Science. Travel to Los Alamos is supported by a combination of funding from the DOE SC and NSSC