Description
Both water and liquid scintillator have seen consistent use as target materials in detectors employed nuclear and particle physics over the past several decades. In the context of large-scale neutrino detectors, accurate knowledge of both the light yield and emission time profile of the target material is necessary for robust energy and vertex reconstruction, and the potential for direction reconstruction via timing-based selection of Cherenkov photons is directly correlated with the scintillator rise-time. Water-based Liquid Scintillator (WbLS) is a new material designed to allow the low detection threshold intrinsic to scintillators while retaining a higher proportion of Cherenkov signal, offering improved direction reconstruction. We present a single-photon method for measuring the scintillation time profiles of organic liquid scintillators at high precision using a Large Area Picosecond Photodetector, as well as a Monte Carlo-based method for measuring scintillator light yields, and present the results of these measurements for WbLS samples.
