Online dynamic flat-field correction for MHz microscopy data at European XFEL

A near real-time dynamic flat-field correction tool has been implemented to normalize individual X-ray projections for MHz microscopy data at the Single Particles, Clusters, and Biomolecules and Serial Femtosecond Crystallography instrument of European XFEL.

Resonant X-ray emission spectroscopy using self-seeded hard X-ray pulses at PAL-XFEL

Resonant X-ray emission spectroscopy using self-seeded hard X-ray pulses with precise photon energy control was successfully demonstrated at the PAL-XFEL. This achievement proves the feasibility of a self-seeded beam for advanced X-ray spectroscopy experiments.

Spectral-brightness optimization of an X-ray free-electron laser by machine-learning-based tuning

Spectral-brightness optimization was performed by using a machine-learning-based beam optimizer and a new high-resolution inline spectrometer.

Multiplexed emitting system for an energy-recovery-linac-based coherent light source

The design of a multiplexed emitting system based on an energy recovery linac is presented. Five radiation pulses with a central wavelength of 13.5 nm and peak power at the MW level have been produced by the same electron beam via this system.

Closing the loop: autonomous experiments enabled by machine-learning-based online data analysis in synchrotron beamline environments

A machine-learning-based closed-loop solution for reflectometry analysis in synchrotron beamline operation utilizing online data analysis is presented. This work focuses on the perspective of visiting facility users and strategies to provide an elementary data analysis in real time during the experiment without introducing the additional software dependencies in the beamline control software environment.

Monocrystalline diamond detector for online monitoring during synchrotron microbeam radiotherapy

The development of a striped diamond portal detector for online monitoring during synchrotron microbeam radiation therapy is described. Its feasibility, ongoing dosimetric measurements in clinical trials and a prototype for a larger detector currently in progress are also described.

A high-throughput big-data orchestration and processing system for the High Energy Photon Source

Mamba Data Worker (MDW) has been developed as a high-throughput, multimodal data orchestration and processing system for the High Energy Photon Source (HEPS). It acts as the main artery system for data and metadata in data acquisition, storage and online analysis. The design and future development plans of MDW are discussed.

In situ synchrotron X-ray total scattering measurements and analysis of colloidal CsPbX₃ nanocrystals during flow synthesis

The formation of colloidal CsPbX₃ perovskite nanocrystal in solution was interrogated with in situ X-ray total scattering/pair distribution function analysis in a flow cell reactor at the XPD 28-ID-2 beamline.

At-wavelength characterization of X-ray wavefronts in Bragg diffraction from crystals

A quantitative methodology utilizing at-wavelength wavefront sensing is developed for characterizing X-ray wavefronts in Bragg diffraction from high-quality crystal optics for next-generation synchrotron radiation sources and X-ray free-electron lasers.

The emergence of super-resolution beyond the probe size in scanning 3DXRD microscopy

It has been believed that the resolution in scanning-based microscopy is defined by the probe size, but this postulate is not valid in scanning three-dimensional X-ray diffraction (3DXRD) microscopy that combines the translation and rotation motions of a specimen. Numerical simulation shows that the spatial resolution in scanning 3DXRD microscopy surpasses the probe size due to the superposition of the X-ray beam trajectories.

Laboratory-based X-ray spectrometer for actinide science

Experiments demonstrate that laboratory X-ray sources possess adequate power for conducting both X-ray absorption spectroscopy and X-ray emission spectroscopy measurements in the examination of actinides. Furthermore, the obtained spectra from these measurements are in agreement with synchrotron data.

synapse: interactive support on photoemission spectroscopy measurement and analysis for non-expert users

Problems faced by novice users of photoemission spectroscopy are identified, and a native application named synapse with functions to solve these problems is implemented and evaluated qualitatively and quantitatively.

Sparse-view synchrotron X-ray tomographic reconstruction with learning-based sinogram synthesis

This article proposes a deep-learning-based approach for synchrotron X-ray computed tomography with sparse-view projections. The experimental results indicate that tomographic images can be reconstructed by 75 X-ray projections without obvious streak artefacts and noise.

Passive doubly curved structures for determining clamping forces applied to X-ray optic assemblies

A novel approach to in-process monitoring of clamping forces applied to indirectly cooled X-ray optics through use of an additively manufactured passive structure, based on a doubly curved hyperbolic paraboloid, is detailed. The results presented reveal accurate and repeatable displacement at the tip of the structure under preload, both pre- and post-cryogenic quenching, amplifying the adjustment reaction at the bolt by a factor of approximately 2.5.

Correction and integration of solid-angle data from the azimuthally resolving 2D detector at ID06-LVP, ESRF

Corrections that allow for high-precision integration of part or full solid-angle datasets from the long-aspect-ratio Pilatus 900k-W device at ESRF beamline ID06-LVP are presented.

The new small-angle X-ray scattering beamline for materials research at PETRA III: SAXSMAT beamline P62

The SAXSMAT beamline P62 (Small-Angle X-ray Scattering beamline for Materials Research) is a new beamline at the high-energy storage ring PETRA III at DESY. This beamline is dedicated to combined small- and wide-angle X-ray scattering (SAXS/WAXS) techniques for both soft and hard condensed matter systems.

Experimental capabilities for liquid jet samples at sub-MHz rates at the FXE Instrument at European XFEL

A platform for experiments investigating the ultrafast dynamics of biological and chemical systems in solution phase at sub-MHz rates at the FXE Instrument at European XFEL is presented. Examples of fs-resolved X-ray emission spectroscopy and wide-angle X-ray scattering on typical spin-crossovers are given.

Improved precision in As speciation analysis with HERFD-XANES at the As K-edge: the case of As speciation in mine waste. Corrigendum

Corrigendum to the article by Saurette et al. (2022) [J. Synchrotron Rad. 29, 1198–1208].