  We have characterised Water-based Liquid Scintillator (WbLS) using low energy
protons, UV-VIS absorbance, and fluorescence spectroscopy. We have also
developed and validated a simulation model that describes the behaviour of WbLS
in our detector configurations for proton beam energies of 2 GeV, 475 MeV, and
210 MeV and for two WbLS compositions. Our results have enabled us to estimate
the light yield and ionisation quenching of WbLS, as well as to understand the
influence of the wavelength shifting of Cerenkov light on our measurements.
These results are relevant to the suitability of water-based liquid
scintillator materials for next generation intensity frontier experiments.
