A5064606415- Advanced X-ray and CT Imaging
- Medical Imaging Techniques and Applications
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Digital Radiography and Breast Imaging
- Electron and X-Ray Spectroscopy Techniques
- Nuclear Physics and Applications
- Particle Accelerators and Free-Electron Lasers
- Advanced Semiconductor Detectors and Materials
- Radiation Detection and Scintillator Technologies
- CCD and CMOS Imaging Sensors
- X-ray Diffraction in Crystallography
- Radiation Dose and Imaging
- Crystallography and Radiation Phenomena
- X-ray Spectroscopy and Fluorescence Analysis
- Laser-Plasma Interactions and Diagnostics
- High-pressure geophysics and materials
- Particle accelerators and beam dynamics
- Advanced Radiotherapy Techniques
- Advancements in Photolithography Techniques
- Acoustic Wave Resonator Technologies
- Image Processing Techniques and Applications
Synchrotron soleil
2014-2024
Detector Technology (United States)
2021
Pohang University of Science and Technology
2020
Pohang Accelerator Laboratory
2020
Aix-Marseille Université
2009-2016
Centre National de la Recherche Scientifique
2009-2016
Centre de physique des particules de Marseille
2009-2011
Hybrid photon counting (HPC) detectors are widely used at both synchrotron facilities and in-house laboratories. The features of HPC detectors, such as no readout noise, high dynamic range, frame rate, excellent point spread function, blurring etc. along with fast data acquisition, provide a high-performance detector low detection limit sensitivity. Several systems have been developed around the world. A number them commercially available in academia industry. One important an is speed. Most...
A new experimental approach to perform in situ electric field diffraction on single crystals using an on-then-off pump–probe mode ( i.e. the field-switching method) with a synchrotron or laboratory X-ray source is presented. Taking advantage of fast readout XPAD hybrid pixel two-dimensional detector and its programmable functionalities, operation has been customized significantly increase efficiency method. The very weak field-induced structural response piezoelectric crystal can be...
In this paper the back-side-illuminated Percival 2-Megapixel (P2M) detector is presented, along with its characterization by means of optical and X-ray photons. For first time, response system to soft X-rays (250 eV 1 keV) presented. The main performance parameters are measured, assessing capabilities in terms noise, dynamic range single-photon discrimination capability. Present limitations coming improvements discussed.
In order to fully benefit from a beam produced by modern synchrotron light sources, characterised wide and continuous energy spectrum, high brightness very intensity, advancement in detector technology has been made over the last decades. However, one of main limitations state-of-the-art counting hybrid pixel detectors is maximum count-rate that often few orders magnitudes lower than incident, reflected or diffracted flux. Therefore, direct attenuation mandatory perform measurements...
One of the challenges all synchrotron facilities is to offer highest performance detectors for their specific experiments, in particular X-ray diffraction imaging and its high throughput data collection. In that context, DiffAbs beamline, Detectors Design Engineering groups at Synchrotron SOLEIL, collaboration with ImXPAD Cegitek companies, have developed an original unique detector a circular shape. This based on hybrid pixel photon-counting technology consists assembly 20 array (XPAD)...
The XPAD3 is the third generation of a single photon counting chip developed in collaboration by SOLEIL Synchrotron, Institut Néel and Centre de Physique Particules Marseille (CPPM). contains 9600 pixels 130 μm side electronic chain with an adjustable low level threshold each pixel. Imaging detection performance (detective quantum efficiency, modulation transfer function energy resolution) detectors hybridized Si CdTe sensors have been evaluated compared using monochromatic synchrotron...
This paper describes a method for rapid measurements of the specular X-ray reflectivity signal using an area detector and monochromatic, well collimated beam (divergence below 0.01°), combined with continuous data acquisition mode during angular movements sample detector. In addition to total integrated (and background-corrected) signal, this approach yields three-dimensional mapping reciprocal space in vicinity its origin. Grazing-incidence small-angle scattering signals are recorded...
A new photon-counting camera based on hybrid pixel technology has been developed at the SOLEIL synchrotron, making it possible to implement pump-probe-probe hard X-ray diffraction experiments for first time. This application relies two specific advantages of UFXC32k readout chip, namely its high frame rate (50 kHz) and linear count (2.6 × 106 photons s-1 pixel-1). The project involved conception realization chips detector carrier board, data acquisition system, server with software, as well...
This paper presents the performance of a single-photon-counting hybrid pixel X-ray detector with synchrotron radiation. The camera was evaluated respect to time-resolved experiments, namely pump–probe–probe experiments held at SOLEIL. UFXC shows very good energy resolution around 1.5 keV and allows minimum threshold setting be as low 3 keeping high-count-rate capabilities. Measurements characteristic filling mode prove proper separation an isolated bunch photons usability in experiments.
In this study, we present a small animal hybrid PET/CT scanner for simultaneous X and gamma ray scans of the same field view. It is based on high resolution PET demonstrator ClearPET developed within Crystal Clear Collaboration prototype X-ray pixel detector XPAD3 at CPPM. The complete system has been studied using GATE Monte Carlo simulation platform. final design includes detectors appropriately shielded, collimated RTW tube. First, experimental measurements that demonstrate feasibility...
We characterize the imaging performance of micro computed tomography (micro-CT) prototype PIXSCAN equipped with an x-ray photon counting camera based on XPAD3/Si hybrid pixel detectors. The camera, which is composed eight distinctive horizontal modules, permits whole-body mouse scans. Photon supplied by pixels guarantees acquisitions at a Poisson noise level exclusively determined detected statistics. First, we system while assessing its linearity, noise, spatial resolution and low contrast...
The experimental set-up for time-resolved studies of ultra-fast photo-induced structural dynamics at the Synchrotron SOLEIL is based on a general pump-probe scheme that has been developed and implemented CRISTAL hard X-ray diffraction beamline [1,2]. In so-called cycle, sample excited with an ultra-short laser pulse ≈40 fs duration (the pump), induced changes in its atomic structure are studied by measuring, precisely controlled delay, pattern from single synchrotron radiation probe) 2-D...
We investigate the improvement from use of high-Z CdTe sensors for pre-clinical K-edge imaging with hybrid pixel detectors XPAD3. compare XPAD3 chips bump bonded to Si or in identical experimental conditions. Image performance narrow energy bin acquisitions and contrast-to-noise ratios images are presented compared. achieve signal-to-noise at least three times higher than within bins, thanks their much detection efficiency. Nevertheless provide better when working equivalent counting...
The XPAD3 chip bump-bonded to a Si sensor has been widely used in preclinical micro-computed tomography and synchrotron experiments. Although the is linear up 60 keV, performance of XPAD3/Si hybrid detector limited energies below 30 for which detection efficiencies remain above 20%. To overcome this limitation on efficiency order access imaging at higher energies, we decided develop camera based single chips high-Z CdTe sensors. We will first present construction new camera, from tests...
A simple method is proposed in this work for quantitative evaluation of the quality threshold adjustment and flat-field correction Hybrid Photon Counting pixel (HPC) detectors. This approach based on Transfer Curve (PTC) corresponding to measurement standard deviation signal flat field images. Fixed pattern noise (FPN), easily identifiable curve, linked residual dispersion, sensor inhomogeneity remnant errors fielding techniques. The analytical expression ratio curve developed HPC...
Abstract `Pseudo' Laue diffraction experiments, with multi pink beam, is being considered as an option for the upgrade of SOLEIL fast time resolved crystallographic applications in energy range from 5 to 30 keV. An important requirement detector such experiments increase readout speed and capability discriminate between several energies. For this purpose, a new project has been launched 2021 through collaboration AGH, starting feasibility phase design realization photon counting ASIC...
Thanks to their excellent imaging performances, the single photon counting hybrid pixel detectors, became major scientific instruments for many diffraction applications at synchrotron radiation facilities. In order respond current and future requirements SOLEIL synchrotron, especially time-resolved pump-probe experiments, Detector Group, in collaboration with Control Data Acquisition Electronics group, have started development of a new camera prototype based on UFXC32k readout circuit. this...
XPAD3 is a large surface X-ray photon counting imager with high count rates, counter dynamics and very fast data readout. Data are readout in parallel by PCI Express interface using DMA transfer. The frame rate of the complete detector comprising 0.5 MPixels amounts to 500 images per second without dead-time.
Experiments on high flux and brilliance third generation synchrotron X-ray sources low dose photon counting cone beam micro-CT imaging require detectors with large surface, count rates, counter dynamics, adjustable energy threshold last but not least fast readout system. The XPAD3 imager is a large-surface (12 × 7.5 cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ) hybrid pixel detector data electronics.
XPAD3 is a large surface X-ray photon counting imager with high count rates, counter dynamics and very fast data readout. Data are readout in parallel by PCI Express interface using DMA transfer. The frame rate of the complete detector comprising 0.5 MPixels amounts to 500 images per second without dead-time.
Abstract It is now been over 15 years since Hybrid Photon Counting Detectors (HPCD) became one of the standard position-sensitive detectors for synchrotron light sources and X-ray detection applications. This mainly due to their single-photon sensitivity a high dynamic energy range electronic noise suppression thanks thresholding. To reach those performances, all HPCD pixels must feature same electrical response against photons energy. From analysis monochromatic beam, in case an ideal...