Semiautomatic dimensional screening of plastic scintillator cubes using image analysis and robotics
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866908917453291520 |
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| author | Kikawa, Tatsuya Tani, Mao Ichikawa, Atsuko K. Matsubara, Tsunayuki Nakaya, Tsuyoshi Ogawa, Tomohisa |
| author_facet | Kikawa, Tatsuya Tani, Mao Ichikawa, Atsuko K. Matsubara, Tsunayuki Nakaya, Tsuyoshi Ogawa, Tomohisa |
| contents | Large-scale particle physics detectors often contain millions of repeated components, making precise and efficient quality control essential. We have developed a semiautomatic system for dimensional screening of 1 cm$^3$ plastic scintillator cubes for their potential use in future neutrino detectors. The system employs a motorized rotating stage, six high-resolution cameras, and image analysis software to measure cube size, surface protrusions, and the positions of holes for wavelength-shifting fibers used in optical readout. Based on these measurements, each cube is automatically classified as either acceptable or defective. We constructed and validated a prototype system, achieving a measurement precision of 10 $μ$m and over 80% consistency with manual screening. To enable classification of cubes into 48 groups based on hole positions while preserving their orientation, we introduced a 6-axis robotic arm. The completed system achieved a rejection rate of 3.1%. Our approach contributes to scalable, precise, and efficient quality control for future large-scale particle physics detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_26732 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Semiautomatic dimensional screening of plastic scintillator cubes using image analysis and robotics Kikawa, Tatsuya Tani, Mao Ichikawa, Atsuko K. Matsubara, Tsunayuki Nakaya, Tsuyoshi Ogawa, Tomohisa Instrumentation and Detectors High Energy Physics - Experiment Large-scale particle physics detectors often contain millions of repeated components, making precise and efficient quality control essential. We have developed a semiautomatic system for dimensional screening of 1 cm$^3$ plastic scintillator cubes for their potential use in future neutrino detectors. The system employs a motorized rotating stage, six high-resolution cameras, and image analysis software to measure cube size, surface protrusions, and the positions of holes for wavelength-shifting fibers used in optical readout. Based on these measurements, each cube is automatically classified as either acceptable or defective. We constructed and validated a prototype system, achieving a measurement precision of 10 $μ$m and over 80% consistency with manual screening. To enable classification of cubes into 48 groups based on hole positions while preserving their orientation, we introduced a 6-axis robotic arm. The completed system achieved a rejection rate of 3.1%. Our approach contributes to scalable, precise, and efficient quality control for future large-scale particle physics detectors. |
| title | Semiautomatic dimensional screening of plastic scintillator cubes using image analysis and robotics |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2603.26732 |