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Improved Pixel-wise Calibration for Charge-Integrating Hybrid Pixel Detectors with Performance Validation Open
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 learning-based electron localization in electron microscopy.…
Optimization and validation of charge transport simulation for hybrid pixel detectors incorporating the repulsion effect Open
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 localization, accurate modeling of charge transport processes in the …
Optimization and validation of charge transport simulation for hybrid pixel detectors incorporating the repulsion effect Open
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 localization, accurate modeling of charge transport processes in the …
First results of the ADC-SAR-05 prototype towards On-chip digitization of the JUNGFRAU charge-integrating X-ray pixel detector Open
JUNGFRAU is a state-of-the-art charge-integrating X-ray detector widely used for imaging, diffraction and spectroscopy experiments at synchrotrons and free electron lasers. The current frame rate is 2.2 kHz, limited by analog signal integr…
View article: Investigating the Impact of Sensor Layout on Radiation Hardness in 25 µm Pitch Hybrid Pixel Detectors for 4th Generation Synchrotron Light Sources
Investigating the Impact of Sensor Layout on Radiation Hardness in 25 µm Pitch Hybrid Pixel Detectors for 4th Generation Synchrotron Light Sources Open
With the evolution of synchrotron light sources to fourth generation (diffraction-limited storage rings), the brilliance is increased by several orders of magnitude compared to third generation facilities. For example, the Swiss Light Sour…
View article: MYTHEN III: advancements in single photon counting detectors for synchrotron powder diffraction experiments
MYTHEN III: advancements in single photon counting detectors for synchrotron powder diffraction experiments Open
The single photon counting microstrip detector MYTHEN III was developed at the Paul Scherrer Institute to satisfy the increasing demands in detector performance of synchrotron radiation experiments, focusing on time-resolved and on-edge po…
View article: Signal stability of high-Z sensors at synchrotron light sources
Signal stability of high-Z sensors at synchrotron light sources Open
The use of high-Z sensors for scientific applications at synchrotrons will gain more importance due to the upgrade of many light sources around the world to diffraction limited light sources for which the photon flux at high photon energie…
Optimizing charge transport simulation for hybrid pixel detectors Open
To enhance the spatial resolution of the MÖNCH 25 µm pitch hybrid pixel detector, deep learning models have been trained using both simulation and measurement data. Challenges arise when comparing simulation-based deep learning models to m…
View article: Resolving soft X-ray photons with a high-rate hybrid pixel detector
Resolving soft X-ray photons with a high-rate hybrid pixel detector Open
Due to their high frame rates and dynamic range, large area coverage, and high signal-to-noise ratio, hybrid silicon pixel detectors are an established standard for photon science applications at X-ray energies between 2 keV and 20 keV. Th…
Quantum Efficiency Measurement and Modeling of Silicon Sensors Optimized for Soft X-ray Detection Open
Hybrid pixel detectors have become indispensable at synchrotron and X-ray free-electron laser facilities thanks to their large dynamic range, high frame rate, low noise, and large area. However, at energies below 3 keV, the detector perfor…
Balancing gain and dynamic range in a 25 µm pitch hybrid pixel detector Open
MÖNCH is a hybrid pixel detector featuring 25 µm pixel pitch and analogue readout for X-ray imaging at synchrotron radiation (SR) facilities. Sub-pixel spatial resolution has been demonstrated using charge sharing and interpolation algorit…
Characterization of iLGADs using soft X-rays Open
Experiments at synchrotron radiation sources and X-ray Free-Electron Lasers in the soft X-ray energy range (250 eV–2 keV) stand to benefit from the adaptation of the hybrid silicon detector technology for low energy photons. Inverse Low Ga…
Characterization of iLGADs using soft X-rays Open
Experiments at synchrotron radiation sources and X-ray Free-Electron Lasers in the soft X-ray energy range ($250$eV--$2$keV) stand to benefit from the adaptation of the hybrid silicon detector technology for low energy photons. Inverse Low…
Study of the internal quantum efficiency of FBK sensors with optimized entrance windows Open
Single-photon detection of X-rays in the energy range of 250 eV to 1 keV is difficult for hybrid detectors because of the low quantum efficiency and low signal-to-noise ratio. The low quantum efficiency is caused by the absorption of soft …
Detection of MeV electrons using a charge integrating hybrid pixel detector Open
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 sensor at a pulsed electron source. Originally developed f…
Development of LGAD sensors with a thin entrance window for soft X-ray detection Open
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 technology is required to improve the quantum efficiency. Th…
First demonstration of on-chip interpolation using a single photon counting microstrip detector Open
Despite being used in many X-ray applications, hybrid single photon counting detectors are limited in spatial resolution due to the diffusion of the charge produced by single photons between neighboring electronic channels, also called cha…
Development of LGAD sensors with a thin entrance window for soft X-ray detection Open
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 technology is required to improve the quantum efficiency. Th…
View article: Advancing the JUNGFRAU detector toward low-energy X-ray applications
Advancing the JUNGFRAU detector toward low-energy X-ray applications Open
The charge-integrating hybrid silicon pixel detector JUNGFRAU has found widespread use at free-electron laser and synchrotron facilities. The detector was designed for use with hard X-rays; yet, because of its low noise, high dynamic range…
View article: Observation of radiation damage in CdTe Schottky sensors created by 20 keV photons
Observation of radiation damage in CdTe Schottky sensors created by 20 keV photons Open
The polarization characteristics of ohmic and (Al-)Schottky type CdTe sensors supplied by Acrorad have been characterized with the low noise, charge integrating readout chip JUNGFRAU, revealing defined areas in the Schottky type sensors, w…
High-spatial resolution measurements with a GaAs:Cr sensor using the charge integrating MÖNCH detector with a pixel pitch of 25 μm Open
The aim of this project is to determine the imaging capabilities of a 25 μm pixel pitch GaAs:Cr sensor of 500 μm thickness bump-bonded to the charge integrating MÖNCH 03 readout chip (also called GaAs-MÖNCH assembly) and to assess the poss…
View article: Design and first tests of the Gotthard-II readout ASIC for the European X-ray Free-Electron Laser
Design and first tests of the Gotthard-II readout ASIC for the European X-ray Free-Electron Laser Open
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 excellent single photon sensitivity, large dynamic range as well as …
View article: Characterization of Chromium Compensated GaAs Sensors with the Charge-Integrating JUNGFRAU Readout Chip by Means of a Highly Collimated Pencil Beam
Characterization of Chromium Compensated GaAs Sensors with the Charge-Integrating JUNGFRAU Readout Chip by Means of a Highly Collimated Pencil Beam Open
Chromium compensated GaAs or GaAs:Cr sensors provided by the Tomsk State University (Russia) were characterized using the low noise, charge integrating readout chip JUNGFRAU with a pixel pitch of 75 × 75 µm2 regarding its application as an…
View article: Development of low-energy X-ray detectors using LGAD sensors
Development of low-energy X-ray detectors using LGAD sensors Open
Recent advances in segmented low-gain avalanche detectors (LGADs) make them promising for the position-sensitive detection of low-energy X-ray photons thanks to their internal gain. LGAD microstrip sensors fabricated by Fondazione Bruno Ke…