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| Autors principals: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Publicat: |
2025
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| Matèries: | |
| Accés en línia: | https://arxiv.org/abs/2503.04437 |
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| author | Baruffaldi, Filippo Bergamaschi, Anna Boscardin, Maurizio Brueckner, Martin Butcher, Tim A. Carulla, Maria Vignali, Matteo Centis Dinapoli, Roberto Finizio, Simone Froejdh, Erik Greiffenberg, Dominic Mozzanica, Aldo Paternoster, Giovanni Phillips, Nicholas W. Raabe, Jörg Schmitt, Bernd Zhang, Jiaguo |
| author_facet | Baruffaldi, Filippo Bergamaschi, Anna Boscardin, Maurizio Brueckner, Martin Butcher, Tim A. Carulla, Maria Vignali, Matteo Centis Dinapoli, Roberto Finizio, Simone Froejdh, Erik Greiffenberg, Dominic Mozzanica, Aldo Paternoster, Giovanni Phillips, Nicholas W. Raabe, Jörg Schmitt, Bernd Zhang, Jiaguo |
| contents | Soft X-ray experiments at synchrotron light sources are essential for a wide range of research fields. However, commercially available detectors for this energy range often cannot deliver the necessary combination of quantum efficiency, signal-to-noise ratio, dynamic range, speed, and radiation hardness within a single system. While hybrid detectors have addressed these challenges effectively in the hard X-ray regime, specifically with single photon counting pixel detectors extensively used in high-performance synchrotron applications, similar solutions are desired for energies below 2 keV.
In this work, we introduce the first single-photon-counting hybrid pixel detector capable of detecting X-ray energies as low as 550 eV, utilizing the internal amplification of Low-Gain Avalanche Diode (LGAD) sensors. This detector is thoroughly characterized in terms of Signal-to-Noise Ratio and Detective Quantum Efficiency. We demonstrate its capabilities through ptychographic imaging at MAX IV 4th generation synchrotron light source at the Fe L$_3$-edge (707 eV), showcasing the enhanced detection performance of the system. This development sets a new benchmark for soft X-ray applications at synchrotrons, paving the way for significant advancements in imaging and analysis at lower photon energies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_04437 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Single-photon counting pixel detector for soft X-rays Baruffaldi, Filippo Bergamaschi, Anna Boscardin, Maurizio Brueckner, Martin Butcher, Tim A. Carulla, Maria Vignali, Matteo Centis Dinapoli, Roberto Finizio, Simone Froejdh, Erik Greiffenberg, Dominic Mozzanica, Aldo Paternoster, Giovanni Phillips, Nicholas W. Raabe, Jörg Schmitt, Bernd Zhang, Jiaguo Instrumentation and Detectors Applied Physics Soft X-ray experiments at synchrotron light sources are essential for a wide range of research fields. However, commercially available detectors for this energy range often cannot deliver the necessary combination of quantum efficiency, signal-to-noise ratio, dynamic range, speed, and radiation hardness within a single system. While hybrid detectors have addressed these challenges effectively in the hard X-ray regime, specifically with single photon counting pixel detectors extensively used in high-performance synchrotron applications, similar solutions are desired for energies below 2 keV. In this work, we introduce the first single-photon-counting hybrid pixel detector capable of detecting X-ray energies as low as 550 eV, utilizing the internal amplification of Low-Gain Avalanche Diode (LGAD) sensors. This detector is thoroughly characterized in terms of Signal-to-Noise Ratio and Detective Quantum Efficiency. We demonstrate its capabilities through ptychographic imaging at MAX IV 4th generation synchrotron light source at the Fe L$_3$-edge (707 eV), showcasing the enhanced detection performance of the system. This development sets a new benchmark for soft X-ray applications at synchrotrons, paving the way for significant advancements in imaging and analysis at lower photon energies. |
| title | Single-photon counting pixel detector for soft X-rays |
| topic | Instrumentation and Detectors Applied Physics |
| url | https://arxiv.org/abs/2503.04437 |