A technique for measuring scintillator total electron energy resolution

A technique for determining the total electron energy resolution (η_e,tot) of scintillators is described. The technique is based on measurement of the full-width at half maximum of the scintillator coincidence energy spectrum using the previously developed Compton coincidence technique (CCT). For determining η_e,tot , the CCT was modified to accommodate variable collimation of the scattered photons. MCNP simulations were used to guide development of data analysis techniques. Preliminary measurements indicate η_e,tot variation as the inverse square root of the electron energy over a limited energy range