| Direct coupling of scintillator tiles to photo-detectors will play an important role in the development of a finely segmented scintillator-based calorimeter. For direct coupling to be a feasible option, the issue of a position-independent uniform response must be addressed. Experimental tests at NIU concluded that modifying the scintillator tiles by introducing a hemispherical dimple in one side produced a more uniform response when compared to that of a flat unmodified cell. GEANT4 was chosen to simulate these experimental measurements in hopes of better understanding the sensitivity of the response to the variable parameters of the cell. By simulating different possible parameter changes we hope to learn which parameters are the most important in the fabrication process. This project will show the results of several simulations where parameters are varied such as surface finishes, reflectivities, and several more. This simulation opens doors and lays ground work for future simulation runs to see if a directly coupled tile is plausible and come up with an optimized set of parameters that will play important roles in the development of the scintillator-based calorimeter. |
