Quantitative Determination of Spatial Resolution and Linearity of Position-Sensitive LG-SiPMs at Sub-Millimeter Scale via Ricean Distribution Fitting
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arXiv
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| Autori principali: | , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866915186219155456 |
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| author | Raiola, Aramis Acerbi, Fabio Alispach, Cyril Arabi, Hossein della Volpe, Domenico Gola, Alberto Zaidi, Habib |
| author_facet | Raiola, Aramis Acerbi, Fabio Alispach, Cyril Arabi, Hossein della Volpe, Domenico Gola, Alberto Zaidi, Habib |
| contents | Position-sensitive SiPMs are useful in all light detection applications requiring a small number of readout channels while preserving the information about the incoming light's interaction position. Focusing on a 2x2 array of LG-SiPMs covering an area of $\sim 15.5 \times 15.5~\rm{mm}$ with just 6 readout channels, we proposed a quantitative method to evaluate image reconstruction performance. The method is based on a statistical approach to assess the device's precision (spatial resolution) and accuracy (linearity) in reconstructing the light spot center of gravity. This evaluation is achieved through a Rice probability distribution function fitting. We obtained an average sensor spatial resolution's best value of $81 \pm 3~\rm{μm}$ (standard deviation), which is achieved by reconstructing each position with the amplitude of the channels' output signals. The corresponding accuracy is $231 \pm 4~\rm{μm}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05450 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantitative Determination of Spatial Resolution and Linearity of Position-Sensitive LG-SiPMs at Sub-Millimeter Scale via Ricean Distribution Fitting Raiola, Aramis Acerbi, Fabio Alispach, Cyril Arabi, Hossein della Volpe, Domenico Gola, Alberto Zaidi, Habib Instrumentation and Detectors Position-sensitive SiPMs are useful in all light detection applications requiring a small number of readout channels while preserving the information about the incoming light's interaction position. Focusing on a 2x2 array of LG-SiPMs covering an area of $\sim 15.5 \times 15.5~\rm{mm}$ with just 6 readout channels, we proposed a quantitative method to evaluate image reconstruction performance. The method is based on a statistical approach to assess the device's precision (spatial resolution) and accuracy (linearity) in reconstructing the light spot center of gravity. This evaluation is achieved through a Rice probability distribution function fitting. We obtained an average sensor spatial resolution's best value of $81 \pm 3~\rm{μm}$ (standard deviation), which is achieved by reconstructing each position with the amplitude of the channels' output signals. The corresponding accuracy is $231 \pm 4~\rm{μm}$. |
| title | Quantitative Determination of Spatial Resolution and Linearity of Position-Sensitive LG-SiPMs at Sub-Millimeter Scale via Ricean Distribution Fitting |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2503.05450 |