Speaker
Description
High-spatial resolution scintillator detectors can achieve very precise particle tracking capability, when owing to a very fine segmentation down to a few hundred micrometers.
However, the required granularity comes with the price of additional complexity in the detector manufacturing and construction that can make the scaling up to large volumes and masses rather prohibitive.
Moreover, traditional photosensor systems would lead to a too large number of readout channels, further increasing complexity and cost.
As a solution, we propose a change of paradigm in scintillation detection systems, applying 3D imaging techniques to particle interactions in an unsegmented monolithic volume of organic scintillator, capable of high-resolution tracking. This is achieved by combining the concept of plenoptic imaging with a Single-Photon Avalanche Diode (SPAD) array imaging sensor.
This report will include the operation and performance of the first SPAD-based plenoptic camera for particle tracking.
We discuss both analytical and artificial intelligence-driven reconstruction algorithms capable of event imaging.
Results are presented from a controlled optical setup based on two-photon absorption, which enables localized, point-like light emission within the scintillator volume, simulating energy depositions from particle interactions.
A case study focused on accelerator neutrino detection demonstrates the unique potential of this approach, achieving full event reconstruction with a spatial resolution on the order of one hundred micrometres.
The extrapolation to tonne-scale volumes will also be discussed.
Our work sets the path forward for new detection systems for high-precision particle tracking in dense active volumes, with applications that can range from neutrino detection to particle calorimetry.
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