Simulation of a time and spatial sensitive plastic scintillator detector

Muon tomography is a promising technique for the detection and imaging of high-Z materials. A detector with excellent timing and spatial resolution can significantly improve imaging accuracy. In this study, we propose a scintillation detector design based on a SiPM array readout and conduct detailed simulations to investigate its timing and spatial performances. Preliminary results indicate that the detector can achieve a time resolution better than 30 ps and a spatial resolution of approximately 1.5 mm. This design offers a compact, single-detector solution with high performance, which has great potential to simplify muon scattering tomography systems and further enhance image effect.