Characterization of an MPPC-Based Scintillator Telescope and Measurement of Cosmic Muon Angular Distribution
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| Format: | Preprint |
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2026
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| _version_ | 1866918349451034624 |
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| author | Manithottathil, Sahla Gupta, Anuj Kumar, Mudit Poonthottathil, Navaneeth |
| author_facet | Manithottathil, Sahla Gupta, Anuj Kumar, Mudit Poonthottathil, Navaneeth |
| contents | This report presents the design, characterization, and application of a high-sensitivity optical detection system based on plastic scintillators coupled to Multi-Pixel Photon Counters (MPPCs). The primary objective was to evaluate the performance of MPPCs (Silicon Photomultipliers) as robust, low-voltage alternatives to traditional photomultiplier tubes for detecting faint scintillation light. The optoelectronic properties of the sensors were analyzed, including single-photoelectron gain calibration and dark count rate measurements, to optimize the signal-to-noise ratio. By embedding wavelength-shifting fibers to enhance light collection efficiency, the system was configured into a three-fold coincidence telescope. The angular distribution of the cosmic ray muon flux was measured to validate the detector's stability and geometric acceptance. Fitting the experimental data to a $\bm{\cos^n(θ)}$ distribution yielded an angular exponent of $\bm{n = 1.44 \pm 0.06}$, consistent with literature values. These results demonstrate the efficacy of the MPPC-scintillator coupling for precise photon counting and timing applications in high-energy physics instrumentation. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_16297 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Characterization of an MPPC-Based Scintillator Telescope and Measurement of Cosmic Muon Angular Distribution Manithottathil, Sahla Gupta, Anuj Kumar, Mudit Poonthottathil, Navaneeth Instrumentation and Detectors Instrumentation and Methods for Astrophysics High Energy Physics - Experiment This report presents the design, characterization, and application of a high-sensitivity optical detection system based on plastic scintillators coupled to Multi-Pixel Photon Counters (MPPCs). The primary objective was to evaluate the performance of MPPCs (Silicon Photomultipliers) as robust, low-voltage alternatives to traditional photomultiplier tubes for detecting faint scintillation light. The optoelectronic properties of the sensors were analyzed, including single-photoelectron gain calibration and dark count rate measurements, to optimize the signal-to-noise ratio. By embedding wavelength-shifting fibers to enhance light collection efficiency, the system was configured into a three-fold coincidence telescope. The angular distribution of the cosmic ray muon flux was measured to validate the detector's stability and geometric acceptance. Fitting the experimental data to a $\bm{\cos^n(θ)}$ distribution yielded an angular exponent of $\bm{n = 1.44 \pm 0.06}$, consistent with literature values. These results demonstrate the efficacy of the MPPC-scintillator coupling for precise photon counting and timing applications in high-energy physics instrumentation. |
| title | Characterization of an MPPC-Based Scintillator Telescope and Measurement of Cosmic Muon Angular Distribution |
| topic | Instrumentation and Detectors Instrumentation and Methods for Astrophysics High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2602.16297 |