Author:
Logoglu Faruk,Surani Stuti,Flaska Marek
Abstract
Recently, it has been shown through both Monte Carlo simulations and experiments that scintillator-PMT interface reflection coefficients could depend on crystal thickness. It has been argued that the thickness-dependency on the interface reflection coefficient is a result of bulk attenuation and surface reflections. So far, only LYSO:Ce3+ scintillators have been tested to investigate thickness-dependent reflection coefficients. In this work, the simulations and experiments are extended to GAGG:Ce3+ crystals. Moreover, a new experimental technique (the dualPMT setup) has been tested to measure the interface reflection coefficients, and it has been shown through the dual-PMT setup that GAGG:Ce3+-PMT interface reflection coefficients are thickness-dependent with more than 1σ confidence. These results are also supported with extensive Monte Carlo simulations.
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