69 citations · 301 across the 19 of their papers we have counts for
22 papers
Enhanced micrometre spatial resolution and usable photon flux for hybrid pixel detectors via deep-learning-based X-ray localization
Xiangyu Xie, Anna Bergamaschi, Martin Brückner +30
Micrometre spatial resolution is achieved for X-rays with the MÖNCH detector, a charge-integrating hybrid pixel detector with a 25 μm pixel pitch, by exploiting charge sharing betw…
Non-destructive 3D doping imaging of silicon sensors
Xiangyu Xie, Anna Bergamaschi, Maria Carulla +9
Silicon sensors are the foundational detection medium for X-rays and charged particles. While their bulk dopant distribution determines device performance, it is conventionally ass…
High frame rate RIXS spectroscopy using a JUNGFRAU detector with an iLGAD sensor
Nuno Duarte, Loïc Le Guyader, Viktoria Hinger +17
Resonant inelastic X-ray scattering (RIXS) is a powerful photon-in, photon-out spectroscopy technique for probing electronic, magnetic, and lattice excitations in matter. Time-reso…
Improved Pixel-wise Calibration for Charge-Integrating Hybrid Pixel Detectors with Performance Validation
X. Xie, A. Bergamaschi, M. Brückner +29
The MÖNCH hybrid pixel detector, with a 25 \textmu m pixel pitch and fast charge-integrating readout, has demonstrated subpixel resolution capabilities for X-ray imaging and deep l…
3D atomic structure determination with ultrashort-pulse MeV electron diffraction
Vincent Hennicke, Max Hachmann, Paul Benjamin Klar +22
Understanding structure at the atomic scale is fundamental for the development of materials with improved properties. Compared to other probes providing atomic resolution, electron…
Optimization and validation of charge transport simulation for hybrid pixel detectors incorporating the repulsion effect
X. Xie, A. Bergamaschi, M. Brückner +27
For emerging applications of hybrid pixel detectors which require high spatial resolution, e.g., subpixel interpolation in X-ray imaging and deep learning-based electron localizati…
Single-photon counting pixel detector for soft X-rays
Filippo Baruffaldi, Anna Bergamaschi, Maurizio Boscardin +14
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…
Optimizing Charge Transport Simulation for Hybrid Pixel Detectors
X. Xie, R. Barten, A. Bergamaschi +23
To enhance the spatial resolution of the MÖNCH 25 \textmu m pitch hybrid pixel detector, deep learning models have been trained using both simulation and measurement data. Challeng…
A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL
Hui-Yuan Chen, Rolf B. Versteeg, Michele Puppin +15
We present a new set up for resonant inelastic hard X-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R=0.5 m Johann-…
Characterization of iLGADs using soft X-rays
Antonio Liguori, Rebecca Barten, Filippo Baruffaldi +31
Experiments at synchrotron radiation sources and X-ray Free-Electron Lasers in the soft X-ray energy range (eV--keV) stand to benefit from the adaptation of the hybrid sili…
Detection of MeV electrons using a charge integrating hybrid pixel detector
E. Fröjdh, F. Baruffaldi, A. Bergamaschi +13
Electrons are emerging as a strong complement to X-rays for diffraction based studies. In this paper we investigate the performance of a JUNGFRAU detector with 320 um thick silicon…
Development of LGAD sensors with a thin entrance window for soft X-ray detection
Jiaguo Zhang, Rebecca Barten, Filippo Baruffaldi +26
We show the developments carried out to improve the silicon sensor technology for the detection of soft X-rays with hybrid X-ray detectors. An optimization of the entrance window t…
Hard X-ray Transient Grating Spectroscopy on Bismuth Germanate
Jeremy R. Rouxel, Danny Fainozzi, Roman Mankowsky +44
Optical-domain Transient Grating (TG) spectroscopy is a versatile background-free four-wave-mixing technique used to probe vibrational, magnetic and electronic degrees of freedom i…
Design and first tests of the Gotthard-II readout ASIC for the European X-ray Free-Electron Laser
Jiaguo Zhang, Marie Andrae, Rebecca Barten +20
Gotthard-II is a charge-integrating microstrip detector developed for experiments and diagnostics at free-electron lasers using hard X-rays of 5 keV - 20 keV. Thanks to its excelle…
Strain Wave Pathway to Semiconductor-to-Metal Transition revealed by time resolved X-ray powder diffraction
C. Mariette, M. Lorenc, H. Cailleau +42
Thanks to the remarkable developments of ultrafast science, one of today's challenges is to modify material state by controlling with a light pulse the coherent motions that connec…
Megapixels @ Megahertz -- The AGIPD High-Speed Cameras for the European XFEL
Ulrich Trunk, Aschkan Allahgholi, Julian Becker +23
The European XFEL is an extremely brilliant Free Electron Laser Source with a very demanding pulse structure: trains of 2700 X-Ray pulses are repeated at 10 Hz. The pulses inside t…
The Adaptive Gain Integrating Pixel Detector at the European XFEL
Aschkan Allahgholi, Julian Becker, Annette Delfs +29
The Adaptive Gain Integrating Pixel Detector (AGIPD) is an x-ray imager, custom designed for the European x-ray Free-Electron Laser (XFEL). It is a fast, low noise integrating dete…
Femtosecond phase-transition in hard x-ray excited bismuth
M. Makita, I. Vartiainen, I. Mohacs +19
The evolution of the bismuth crystal structure upon excitation of its A phonon has been intensely studied with short pulse optical lasers. Here we present the first-time obs…
Towards Gotthard-II: Development of A Silicon Microstrip Detector for the European X-ray Free-Electron Laser
Jiaguo Zhang, Marie Andrä, Rebecca Barten +18
Gotthard-II is a 1-D microstrip detector specifically developed for the European X-ray Free-Electron Laser. It will not only be used in energy dispersive experiments but also as a…
Performance Evaluation of the Analogue Front-End and ADC Prototypes for the Gotthard-II Development
Jiaguo Zhang, Marie Andrä, Rebecca Barten +18
Gotthard-II is a silicon microstrip detector developed for the European X-ray Free-Electron Laser (XFEL.EU). Its potential scientific applications include X-ray absorption/emission…
Challenges for the Adaptive Gain Integrating Pixel Detector (AGIPD) design due to the high intensity photon radiation environment at the European XFEL
J. Becker, L. Bianco, P. Göttlicher +17
The European X-ray Free Electron Laser (XFEL) is a new research facility currently under construction in Hamburg, Germany. With a pulse length of less than 100 fs and an extremely…
The single photon sensitivity of the Adaptive Gain Integrating Pixel Detector
Julian Becker, Dominic Greiffenberg, Ulrich Trunk +6
Single photon sensitivity is an important property of certain detection systems. This work investigated the single photon sensitivity of the Adaptive Gain Integrating Pixel Detecto…