Gamma-ray response of a GAGG:Ce scintillator coupled to a 2 × 2 SiPM array
A relatively large 35 × 35 × 20 mm3 GAGG:Ce scintillator coupled to a 2 × 2 silicon photomultiplier (SiPM) array was characterized for gamma-ray detection, including relative-gain calibration, nonlinear energy response, energy resolution, and timing resolution. The SiPM-array response was well described by a saturation...