Multi-photon 3D laser micro-printed plastic scintillators for applications in low-energy particle physics
Plastic scintillators are inexpensive to manufacture and therefore a popular alternative to inorganic crystalline scintillators. For many applications, their advantages outweigh their lower light yield. Additionally, it is easier to structure plastic scintillators with well-developed processing tech...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
January 9, 2025
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| In: |
Advanced functional materials
Year: 2025, Volume: 35, Issue: 2, Pages: 1-8 |
| ISSN: | 1616-3028 |
| DOI: | 10.1002/adfm.202413215 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/adfm.202413215 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.202413215 
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| Author Notes: | Jannis Weinacker, Sebastian Kalt, Anton Huber, Nathanael Gutknecht, Jonathan Ludwig Günter Schneider, Niclas Maximilian Bojanowski, Tom Geigle, Markus Steidl, and Martin Wegener |
| Summary: | Plastic scintillators are inexpensive to manufacture and therefore a popular alternative to inorganic crystalline scintillators. For many applications, their advantages outweigh their lower light yield. Additionally, it is easier to structure plastic scintillators with well-developed processing techniques which is of growing relevance in modern applications. One technique to structure plastic material is 3D printing, with noteworthy recent advances in one-photon-based approaches. However, some applications require high spatial resolution and optically smooth surfaces, which can be achieved by multi-photon 3D laser micro-printing. One application example is the improvement of sensitivity of the Karlsruhe Tritium Neutrino (KATRIN) experiment. This improvement can be realized by printing a 3D scintillator structure as an active transverse energy filter directly onto the detector. Herein, the first two-photon printable plastic scintillator providing a printing resolution in the micrometer regime is presented. Using the benefits of two-photon grayscale lithography, optical-grade surfaces are achieved. The light output is estimated to be 930 photons MeV−1. A prototype structure printed directly on a single-photon avalanche diode array is demonstrated. |
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| Item Description: | Gesehen am 20.05.2025 Erstveröffentlichung: 9. Oktober 2024 |
| Physical Description: | Online Resource |
| ISSN: | 1616-3028 |
| DOI: | 10.1002/adfm.202413215 |