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arXiv 2503.04437physics.ins-detphysics.app-ph
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用于软X射线的单光子计数像素探测器

Single-photon counting pixel detector for soft X-rays

Filippo Baruffaldi, Anna Bergamaschi, Maurizio Boscardin, Martin Brueckner, Tim A. Butcher, Maria Carulla, Matteo Centis Vignali, Roberto Dinapoli, Simone Finiz… 展开作者

Filippo Baruffaldi, Anna Bergamaschi, Maurizio Boscardin, Martin Brueckner, Tim A. Butcher, Maria Carulla, Matteo Centis Vignali, Roberto Dinapoli, Simone Finizio, Erik Froejdh, Dominic Greiffenberg, Aldo Mozzanica, Giovanni Paternoster, Nicholas W. Phillips, Jörg Raabe, Bernd Schmitt, Jiaguo Zhang

AI总结:

本文介绍首款利用LGAD传感器内部放大、可探测低至550 eV软X射线的单光子计数混合像素探测器,并在MAX IV光源Fe L$_3$边展示其增强的叠层成像性能,为软X射线应用树立新基准。

摘要:

同步辐射光源上的软X射线实验对广泛的研究领域至关重要。然而,商业上可获得的用于该能量范围的探测器往往无法在单一系统中同时提供所需的量子效率、信噪比、动态范围、速度和辐射硬度。虽然混合探测器在硬X射线区域已有效解决了这些挑战,特别是在高性能同步辐射应用中广泛使用的单光子计数像素探测器,但对于低于2 keV的能量,人们期望有类似的解决方案。在这项工作中,我们介绍了首款能够探测低至550 eV X射线能量的单光子计数混合像素探测器,它利用了低增益雪崩二极管(LGAD)传感器的内部放大功能。该探测器在信噪比和探测量子效率方面得到了全面表征。我们通过在MAX IV第四代同步辐射光源上,在Fe L$_3$边(707 eV)进行的叠层衍射成像展示了其能力,突显了该系统增强的探测性能。这一发展为同步辐射软X射线应用树立了新的基准,为在较低光子能量下进行成像和分析的重大进展铺平了道路。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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