“…A Geant4 (Allison et al, 2006) based simulation of the light creation and propagation process was implemented based on the lessons learned during the previously published work (Krille, Nagl, et al, 2011). Since a sufficiently realistic statistical description of light creation processes, called photon counting statistics (Seifert, Dam, and Schaart, 2012), exists and parameterization of this approach is a matter of measurements rather than simulations with satisfactory data available from literature, a focus was set on the light propagation between the point of conversion of the primary γ photon into secondary visible photons and the photomultiplier tube's photo cathode.…”