Position-Sensitive Silicon Photomultiplier Array with Enhanced Position Reconstruction by means of a Deep Neural Network

Fuente: arXiv
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Auteurs principaux: Alispach, Cyril, Acerbi, Fabio, Arabi, Hossein, della Volpe, Domenico, Gola, Alberto, Raiola, Aramis, Zaidi, Habib
Format: Preprint
Publié: 2025
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author Alispach, Cyril
Acerbi, Fabio
Arabi, Hossein
della Volpe, Domenico
Gola, Alberto
Raiola, Aramis
Zaidi, Habib
author_facet Alispach, Cyril
Acerbi, Fabio
Arabi, Hossein
della Volpe, Domenico
Gola, Alberto
Raiola, Aramis
Zaidi, Habib
contents Single-photon sensitive detectors like Silicon Photomultipliers are widely used in many medical imaging applications. By using detectors with position resolutions, it is possible to build compact photodetector readouts with reduced number of channels, but still preserving position resolution and gamma-rays imaging capabilities. In this work, we present the advantage of using a Deep Neural Networks (DNNs) light position reconstruction applied to a 2x2 array of linearly-graded SiPMs (LG-SiPMs), to minimize the distortions on the reconstructed event maps. Our approach significantly enhances both the resolution and linearity of position detection compared to the nominal reconstruction formula based on the device architecture. Remarkably, the DNN-based reconstruction boosts the number of resolved areas (pixels) by a factor of 5.7 to 12.1 (depending the training splitting used) allowing for a higher level of precision and performance in light detection.
format Preprint
id arxiv_https___arxiv_org_abs_2512_02771
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Position-Sensitive Silicon Photomultiplier Array with Enhanced Position Reconstruction by means of a Deep Neural Network
Alispach, Cyril
Acerbi, Fabio
Arabi, Hossein
della Volpe, Domenico
Gola, Alberto
Raiola, Aramis
Zaidi, Habib
Instrumentation and Detectors
High Energy Physics - Experiment
Data Analysis, Statistics and Probability
Single-photon sensitive detectors like Silicon Photomultipliers are widely used in many medical imaging applications. By using detectors with position resolutions, it is possible to build compact photodetector readouts with reduced number of channels, but still preserving position resolution and gamma-rays imaging capabilities. In this work, we present the advantage of using a Deep Neural Networks (DNNs) light position reconstruction applied to a 2x2 array of linearly-graded SiPMs (LG-SiPMs), to minimize the distortions on the reconstructed event maps. Our approach significantly enhances both the resolution and linearity of position detection compared to the nominal reconstruction formula based on the device architecture. Remarkably, the DNN-based reconstruction boosts the number of resolved areas (pixels) by a factor of 5.7 to 12.1 (depending the training splitting used) allowing for a higher level of precision and performance in light detection.
title Position-Sensitive Silicon Photomultiplier Array with Enhanced Position Reconstruction by means of a Deep Neural Network
topic Instrumentation and Detectors
High Energy Physics - Experiment
Data Analysis, Statistics and Probability
url https://arxiv.org/abs/2512.02771