The Fundamental Neutron Physics Facilities at NIST

Abstract

The National Institute of Standards and Technology (NIST) Center for Neutron Research (NCNR) is a national center that provides thermal and cold neutrons beams for activities such as materials science, biological, polymer, and fundamental physics research. Four beams are currently in use for fundamental physics experiments. These include a neutron optics and interferometry facility, a 0.496 nm monochromatic beam, a 0.89 nm monochromatic beam, and a high‐intensity polychromatic beam. Experiments primarily focus on studies of the weak interaction using neutrons. This paper provides a general overview of the facilities and highlights some current experiments.