Matthew C. Veale
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View article: Single-Step Synthesis of Cs <sub>3</sub> Bi <sub>2</sub> I <sub>9</sub> Nanocrystals for Scalable Direct X-ray Detectors
Single-Step Synthesis of Cs <sub>3</sub> Bi <sub>2</sub> I <sub>9</sub> Nanocrystals for Scalable Direct X-ray Detectors Open
View article: Characterisation and quantification of the `Excess-Leakage-Current' effect in Redlen HF-CdZnTe at > 10<sup>6</sup> ph s<sup>-1</sup> mm<sup>-2</sup>
Characterisation and quantification of the `Excess-Leakage-Current' effect in Redlen HF-CdZnTe at > 10<sup>6</sup> ph s<sup>-1</sup> mm<sup>-2</sup> Open
In this paper, results are presented from the characterisation of a 2 mm thick Redlen Technologies high-flux-capable Cadmium Zinc Telluride (HF-CZT) sensor hybridised to the small-pixel, spectroscopic-imaging HEXITEC_MHz ASIC. Dynamic data…
View article: Comparison of the charge transport properties of low and high flux grade redlen CdZnTe crystals
Comparison of the charge transport properties of low and high flux grade redlen CdZnTe crystals Open
CdZnTe is widely used in gamma ray radiation detection for medical imaging and security, with growing interest in CdZnTe for synchrotron and XFEL detector materials at X-ray fluxes in excess of 10 10 photons·s -1 mm -2 . Understanding fund…
View article: Erratum: Characterisation of Redlen HF-CdZnTe at >10^6 ph s^-1 mm^-2 using HEXITEC_MHz
Erratum: Characterisation of Redlen HF-CdZnTe at >10^6 ph s^-1 mm^-2 using HEXITEC_MHz Open
Erratum: Characterisation of Redlen HF-CdZnTe at >10^6 ph s^-1 mm^-2 using HEXITEC_MHz, B.D. Cline, D. Banks, S. Bell, I. Church, A. Davis, T. Gardiner, J. Harris, M. Hart, L. Jones, T. Nicholls, J. Nobes, S. Pradeep, M. Roberts, D. Sole, …
View article: Characterisation of Redlen HF-CdZnTe at > 10<sup>6</sup> ph s<sup>-1</sup> mm<sup>-2</sup> using HEXITEC<sub>MHz</sub>
Characterisation of Redlen HF-CdZnTe at > 10<sup>6</sup> ph s<sup>-1</sup> mm<sup>-2</sup> using HEXITEC<sub>MHz</sub> Open
In this paper, results are presented from the characterisation of Redlen Technologies high-flux-capable Cadmium Zinc Telluride (HF-CZT) hybridised to the HEXITEC MHz ASIC, a novel 1 MHz continuous X-ray imaging system. A 2 mm thick HF-CZT …
View article: Preliminary characterisation of the HEXITEC<sub>MHz</sub> spectroscopic X-ray imaging detector
Preliminary characterisation of the HEXITEC<sub>MHz</sub> spectroscopic X-ray imaging detector Open
The HEXITEC MHz ASIC is the next generation of the STFC's High Energy X-ray Imaging Technology (HEXITEC). With a ×100 increase in the camera frame rate to 1 MHz, the new ASIC is capable of delivering fully spectroscopic X-ray imaging at ph…
View article: Analysis of a neutron-induced conversion electron spectrum of gadolinium
Analysis of a neutron-induced conversion electron spectrum of gadolinium Open
View article: <i>In Situ</i> Measurement of Electron Energy Evolution in a Laser-Plasma Accelerator
<i>In Situ</i> Measurement of Electron Energy Evolution in a Laser-Plasma Accelerator Open
We report on a novel, noninvasive method applying Thomson scattering to measure the evolution of the electron beam energy inside a laser-plasma accelerator with high spatial resolution. The determination of the local electron energy enable…
View article: Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteries
Correlative full field X-ray compton scattering imaging and X-ray computed tomography for in situ observation of Li ion batteries Open
View article: Energy-Resolving X-ray Imaging at 1 MHz Frame Rate – The HEXITEC<sub>MHZ</sub> ASIC
Energy-Resolving X-ray Imaging at 1 MHz Frame Rate – The HEXITEC<sub>MHZ</sub> ASIC Open
HEXITEC MHZ is an ASIC developed to deliver spectroscopic x-ray imaging at frame rates up to 1MHz for future high-flux-rate applications. Optimised for sensing electron signals from detector materials such as CdTe, CZT, GaAs, and p-type si…
View article: Spectroscopic X-ray imaging at MHz frame rates — the HEXITEC<sub>MHz</sub> ASIC
Spectroscopic X-ray imaging at MHz frame rates — the HEXITEC<sub>MHz</sub> ASIC Open
The HEXITEC MHz ASIC has been developed for the HEXITEC MHz Detector System, to deliver spectroscopic x-ray imaging at frame rates up to 1 MHz for future high-flux-rate applications. Optimised for sensing electron signals from detector mat…
View article: Contents
Contents Open
Tunable High Linearity V-I Converter with FG-
View article: Characterisation of the performance of p-type Si detectors for hard X-ray spectroscopy
Characterisation of the performance of p-type Si detectors for hard X-ray spectroscopy Open
High-density compound semiconductors with sufficiently-high photon attenuations, such as CdZnTe, are required for the detection of the high-energy X-rays (>20 keV), typical to applications of the HEXITEC ASIC. However, in low-energy applic…
View article: Ballistic Deficit Pulse Processing in Cadmium–Zinc–Telluride Pixel Detectors for High-Flux X-ray Measurements
Ballistic Deficit Pulse Processing in Cadmium–Zinc–Telluride Pixel Detectors for High-Flux X-ray Measurements Open
High-flux X-ray measurements with high-energy resolution and high throughput require the mitigation of pile-up and dead time effects. The reduction of the time width of the shaped pulses is a key approach, taking into account the distortio…
View article: 3D Correlative Imaging of Lithium Ion Concentration in a Vertically Oriented Electrode Microstructure with a Density Gradient
3D Correlative Imaging of Lithium Ion Concentration in a Vertically Oriented Electrode Microstructure with a Density Gradient Open
The performance of Li + ion batteries (LIBs) is hindered by steep Li + ion concentration gradients in the electrodes. Although thick electrodes (≥300 µm) have the potential for reducing the proportion of inactive components inside LIBs and…
View article: Development of data correction for the 1M Large Pixel Detector at the EuXFEL
Development of data correction for the 1M Large Pixel Detector at the EuXFEL Open
We present the development of a gain correction process for the Large Pixel Detector (LPD) developed by the Science and Technology Facilities Council (STFC) for the Femtosecond X-Ray Experiment (FXE) instrument based at the European X-ray …
View article: Incomplete Charge Collection at Inter-Pixel Gap in Low- and High-Flux Cadmium Zinc Telluride Pixel Detectors
Incomplete Charge Collection at Inter-Pixel Gap in Low- and High-Flux Cadmium Zinc Telluride Pixel Detectors Open
The success of cadmium zinc telluride (CZT) detectors in room-temperature spectroscopic X-ray imaging is now widely accepted. The most common CZT detectors are characterized by enhanced-charge transport properties of electrons, with mobili…
View article: HEXITEC 2 × 2 tiled hard X-ray spectroscopic imaging detector system
HEXITEC 2 × 2 tiled hard X-ray spectroscopic imaging detector system Open
HEXITEC is a spectroscopic imaging X-ray detector technology developed at the STFC Rutherford Appleton Laboratory for X-ray and γ-ray spectroscopic imaging applications. Each module has 80 × 80 pixels on a 250 μm pixel pitch, and has been …
View article: Energy Recovery of Multiple Charge Sharing Events in Room Temperature Semiconductor Pixel Detectors
Energy Recovery of Multiple Charge Sharing Events in Room Temperature Semiconductor Pixel Detectors Open
Multiple coincidence events from charge-sharing and fluorescent cross-talk are typical drawbacks in room-temperature semiconductor pixel detectors. The mitigation of these distortions in the measured energy spectra, using charge-sharing di…
View article: Charge Sharing and Charge Loss in High-Flux Capable Pixelated CdZnTe Detectors
Charge Sharing and Charge Loss in High-Flux Capable Pixelated CdZnTe Detectors Open
Cadmium zinc telluride (CdZnTe) detectors are known to suffer from polarization effects under high photon flux due to poor hole transport in the crystal material. This has led to the development of a high-flux capable CdZnTe material (HF-C…
View article: Quantifying the performance of a hybrid pixel detector with GaAs:Cr sensor for transmission electron microscopy
Quantifying the performance of a hybrid pixel detector with GaAs:Cr sensor for transmission electron microscopy Open
View article: WiggleCam : a method to cope with inter-sensor gaps for high-framerate tiled sensor arrays
WiggleCam : a method to cope with inter-sensor gaps for high-framerate tiled sensor arrays Open
In order to keep down costs and control yields, large area hybrid detectors are commonly implemented using multiple sensor tiles in various geometries. Due to the presence of guard rings, readout connections and other design considerations…
View article: A new six-sensor HEXITEC readout incorporating the WiggleCam technique
A new six-sensor HEXITEC readout incorporating the WiggleCam technique Open
Larger field of view hybrid photon counting detectors are commonly constructed using multiple distinct sensor tiles, keeping costs and process yields within reasonable parameters. It is however practically impossible to make these multiple…
View article: An <i>operando</i> spatially resolved study of alkaline battery discharge using a novel hyperspectral detector and X-ray tomography
An <i>operando</i> spatially resolved study of alkaline battery discharge using a novel hyperspectral detector and X-ray tomography Open
An experimental technique is described for the collection of time-resolved X-ray diffraction information from a complete commercial battery cell during discharging or charging cycles. The technique uses an 80 × 80 pixel 2D energy-discrimin…
View article: Room-temperature performance of 3 mm-thick cadmium–zinc–telluride pixel detectors with sub-millimetre pixelization
Room-temperature performance of 3 mm-thick cadmium–zinc–telluride pixel detectors with sub-millimetre pixelization Open
Cadmium–zinc–telluride (CZT) pixel detectors represent a consolidated choice for the development of room-temperature spectroscopic X-ray imagers, finding important applications in medical imaging, often as detection modules of a variety of…
View article: Development of a multi-detector readout circuitry for ultrahigh energy resolution single-photon imaging applications
Development of a multi-detector readout circuitry for ultrahigh energy resolution single-photon imaging applications Open
View article: Characterization of the Uniformity of High-Flux CdZnTe Material
Characterization of the Uniformity of High-Flux CdZnTe Material Open
Since the late 2000s, the availability of high-quality cadmium zinc telluride (CdZnTe) has greatly increased. The excellent spectroscopic performance of this material has enabled the development of detectors with volumes exceeding 1 cm3 fo…
View article: Room-temperature X-ray response of cadmium–zinc–telluride pixel detectors grown by the vertical Bridgman technique
Room-temperature X-ray response of cadmium–zinc–telluride pixel detectors grown by the vertical Bridgman technique Open
In this work, the spectroscopic performances of new cadmium–zinc–telluride (CZT) pixel detectors recently developed at IMEM-CNR of Parma (Italy) are presented. Sub-millimetre arrays with pixel pitch less than 500 µm, based on boron oxide e…
View article: Energy-loss correction in charge sharing events for improved performance of pixellated compound semiconductors
Energy-loss correction in charge sharing events for improved performance of pixellated compound semiconductors Open
View article: Development of a non-invasive diagnostic for local acceleration gradient and dephasing length
Development of a non-invasive diagnostic for local acceleration gradient and dephasing length Open
FLASHForward is a beam-driven plasma wakefield accelerator located at Deutsches Elektronen Synchrotron (DESY) in Hamburg, Germany. Within the FLASHForward project, a laser-driven wakefield setup is used as testbed for the characterisation …