Temperature Dependence of the Time Resolution in a SiPM-Readout Plastic Scintillator for Cosmic-Ray Applications
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866909900472320000 |
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| author | Castillo, José Reyes Salazar, Saúl Aguilar Coral, Diego Mauricio Gomez |
| author_facet | Castillo, José Reyes Salazar, Saúl Aguilar Coral, Diego Mauricio Gomez |
| contents | Balloon- and space-borne cosmic-ray experiments employ plastic scintillators read out by silicon photomultipliers (SiPMs) to achieve picosecond-level time resolutions for triggering and particle identification. The performance of these systems can be affected by temperature variations encountered in flight. In this work, a time-of-flight (TOF) prototype consisting of a BC418 plastic scintillator bar coupled to Onsemi MICROFC-30050 SiPMs was constructed and tested under a controlled thermal environment between -20 and 20$^{\circ}$C. Electrons from a $^{90}\text{Sr}$ source were used as a beam, and a dedicated differential preamplifier and coincidence triggering were implemented to study the detector response. A minimum time resolution of 160ps was achieved at an overvoltage of 3V, remaining stable across the tested temperature range and uniform along the scintillator bar. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_10041 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Temperature Dependence of the Time Resolution in a SiPM-Readout Plastic Scintillator for Cosmic-Ray Applications Castillo, José Reyes Salazar, Saúl Aguilar Coral, Diego Mauricio Gomez Instrumentation and Detectors Balloon- and space-borne cosmic-ray experiments employ plastic scintillators read out by silicon photomultipliers (SiPMs) to achieve picosecond-level time resolutions for triggering and particle identification. The performance of these systems can be affected by temperature variations encountered in flight. In this work, a time-of-flight (TOF) prototype consisting of a BC418 plastic scintillator bar coupled to Onsemi MICROFC-30050 SiPMs was constructed and tested under a controlled thermal environment between -20 and 20$^{\circ}$C. Electrons from a $^{90}\text{Sr}$ source were used as a beam, and a dedicated differential preamplifier and coincidence triggering were implemented to study the detector response. A minimum time resolution of 160ps was achieved at an overvoltage of 3V, remaining stable across the tested temperature range and uniform along the scintillator bar. |
| title | Temperature Dependence of the Time Resolution in a SiPM-Readout Plastic Scintillator for Cosmic-Ray Applications |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2511.10041 |