Sub-microsecond-resolved multi-speckle X-ray photon correlation spectroscopy with a pixel array detector

Q Zhang, EM Dufresne, S Narayanan… - Journal of …, 2018 - journals.iucr.org
Small-angle X-ray photon correlation spectroscopy (XPCS) measurements spanning delay
times from 826 ns to 52.8 s were performed using a photon-counting pixel array detector …

Characterization of Medipix3 with synchrotron radiation

EN Gimenez, R Ballabriga, M Campbell… - … on Nuclear Science, 2010 - ieeexplore.ieee.org
Medipix3 is the latest generation of photon counting readout chips of the Medipix family.
With the same dimensions as Medipix2 (256× 256 pixels of 55 μm× 55 μm pitch each) …

Performance of a four-element Si drift detector for X-ray absorption fine-structure spectroscopy: resolution, maximum count rate, and dead-time correction with …

JC Woicik, B Ravel, DA Fischer… - Journal of synchrotron …, 2010 - journals.iucr.org
The performance of a four-element Si drift detector for energy-dispersive fluorescence-yield
X-ray absorption fine-structure measurements is reported, operating at the National Institute …

X-ray analog pixel array detector for single synchrotron bunch time-resolved imaging

LJ Koerner, SM Gruner - Journal of synchrotron radiation, 2011 - journals.iucr.org
Dynamic X-ray studies can reach temporal resolutions limited by only the X-ray pulse
duration if the detector is fast enough to segregate synchrotron pulses. An analog integrating …

Direct measurements of multi-photon induced nonlinear lattice dynamics in semiconductors via time-resolved x-ray scattering

GJ Williams, S Lee, DA Walko, MA Watson, W Jo… - Scientific reports, 2016 - nature.com
Nonlinear optical phenomena in semiconductors present several fundamental problems in
modern optics that are of great importance for the development of optoelectronic devices. In …

Picosecond x-ray strain rosette reveals direct laser excitation of coherent transverse acoustic phonons

S Lee, GJ Williams, MI Campana, DA Walko… - Scientific reports, 2016 - nature.com
Using a strain-rosette, we demonstrate the existence of transverse strain using time-resolved
x-ray diffraction from multiple Bragg reflections in laser-excited bulk gallium arsenide. We …

[PDF][PDF] Time-over-threshold readout to enhance the high flux capabilities of single-photon-counting detectors

A Bergamaschi, R Dinapoli, D Greiffenberg… - Journal of …, 2011 - journals.iucr.org
The MYTHEN single-photon-counting (SPC) detector has been characterized using the time-
over-threshold (ToT) readout method, ie measuring the time that the signal produced by the …

Empirical dead-time corrections for energy-resolving detectors at synchrotron sources

DA Walko, DA Arms, A Miceli, AL Kastengren - Nuclear Instruments and …, 2011 - Elsevier
We examine the high count-rate performance of an energy-resolving detector in the three
operating modes of the Advanced Photon Source (APS). Specifically, we present the optimal …

Optics-on-a-chip for ultrafast manipulation of 350-MHz hard x-ray pulses

P Chen, IW Jung, DA Walko, Z Li, Y Gao, T Mooney… - Optics …, 2021 - opg.optica.org
Microelectromechanical systems (MEMS) are miniature devices integrated into a vast range
of industrial and consumer applications. Optical MEMS are developed for dynamic …

Dead-time correction for spectroscopic photon-counting pixel detectors

G Blaj - Journal of Synchrotron Radiation, 2019 - journals.iucr.org
Modern photon-counting pixel detectors have enabled a revolution in applications at
synchrotron light sources and beyond in the last decade. One of the limitations of the current …