Microlens-enhanced SiPMs
Fuente:
arXiv
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| Auteurs principaux: | , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866910858984030208 |
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| author | Haefeli, Guido Blanc, Frederic Currás-Rivera, Esteban Marchevski, Radoslav Ronchetti, Federico Schneider, Olivier Shchutska, Lesya Trippl, Carina Zaffaroni, Ettore Zunica, Gianluca |
| author_facet | Haefeli, Guido Blanc, Frederic Currás-Rivera, Esteban Marchevski, Radoslav Ronchetti, Federico Schneider, Olivier Shchutska, Lesya Trippl, Carina Zaffaroni, Ettore Zunica, Gianluca |
| contents | A novel concept to enhance the photo-detection efficiency (PDE) of silicon photomultipliers (SiPMs) has been applied and remarkable positive results can be reported. This concept uses arrays of microlenses to cover every second SiPM pixel in a checkerboard arrangement and aims to deflect the light from the dead region of the pixelised structure towards the active region in the center of the pixel. The PDE is improved up to 24%, external cross-talk is reduced by 40% compared to a flat epoxy layer, and single photon time resolution is improved. This detector development is conducted in the context of the next generation LHCb scintillating fibre tracker located in a high radiation environment with a total of 700'000 detector channels. The simulation and measurement results are in good agreement and will be discussed in this work. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_09358 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Microlens-enhanced SiPMs Haefeli, Guido Blanc, Frederic Currás-Rivera, Esteban Marchevski, Radoslav Ronchetti, Federico Schneider, Olivier Shchutska, Lesya Trippl, Carina Zaffaroni, Ettore Zunica, Gianluca Instrumentation and Detectors High Energy Physics - Experiment A novel concept to enhance the photo-detection efficiency (PDE) of silicon photomultipliers (SiPMs) has been applied and remarkable positive results can be reported. This concept uses arrays of microlenses to cover every second SiPM pixel in a checkerboard arrangement and aims to deflect the light from the dead region of the pixelised structure towards the active region in the center of the pixel. The PDE is improved up to 24%, external cross-talk is reduced by 40% compared to a flat epoxy layer, and single photon time resolution is improved. This detector development is conducted in the context of the next generation LHCb scintillating fibre tracker located in a high radiation environment with a total of 700'000 detector channels. The simulation and measurement results are in good agreement and will be discussed in this work. |
| title | Microlens-enhanced SiPMs |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2411.09358 |