Enhancing timing performance of heterostructures with double-sided readout.

Heterostructured scintillators offer a promising solution to balance the sensitivity and timing in TOF-PET detectors. These scintillators utilize alternating layers of materials with complementary properties to optimize performance. However, the layering compromises time resolution due to light transport issues. This study explores double-sided readout -- enabling improved light collection and Depth-of-Interaction (DOI) information retrieval -- to mitigate this effect and enhance the timing capabilities of heterostructures.
 The time resolution and DOI performances of 3x3x20 mm

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