A Compton spectrometer experiment has been designed and modeled for the purpose of studying the light yield non-linearities and intrinsic energy resolution of scintillation materials that are used to detect gamma rays. This coincidence method is used to create a nearly monoenergetic internal electron source within the scintillator by recording pulses from the primary detector only when a simultaneous pulse is generated by the coincidence detector. Such an electron source is necessary to accurately quantify the electron response of a scintillator, and has been previously identified as a requirement for quantifying scintillator non-linearity and intrinsic energy resolution. The ability to quantify these scintillator characteristics using this technique and the characterization of the Compton spectrometer geometry, including collimation of primary and scattered gamma rays, using Monte Carlo simulation are discussed.