High precision scintillator time profile measurements using an LAPPD*

Liquid scintillators have seen consistent use in nuclear and particle physics over several decades, with new mixtures still being developed today. In the context of large-scale neutrino detectors, accurate knowledge of the emission time profile of the scintillator cocktail is necessary for robust vertex reconstruction, and the potential for direction reconstruction via timing-based selection of Cherenkov photons is directly correlated with the scintillator rise-time. We present a single-photon method for measuring the time profiles of organic liquid scintillators which is robust to the light yield of the sample, where an LAPPD provides enhanced sensitivity to the rise-time, and report implications for timing-based particle-identification in water-based liquid scintillator based on measurements made using the CHESS apparatus at LBNL.