In situ chamber for studying battery failure using high-speed synchrotron radiography
The investigation of lithium-ion battery failures is a major challenge for personnel and equipment due to the associated hazards (thermal reaction, toxic gases and explosions). To perform such experiments safely, a battery abuse-test chamber has been developed and installed at the microtomography beamline ID19 of the European Synchrotron Radiation Facility (ESRF). The chamber provides the capability to robustly perform in situ abuse tests through the heat-resistant and gas-tight design for flexible battery geometries and configurations, including single-cell and multi-cell assemblies. High-speed X-ray imaging can be co...
Source: Journal of Synchrotron Radiation - November 26, 2022 Category: Physics Authors: Pfaff, J. Fransson, M. Broche, L. Buckwell, M. Finegan, D.P. Moser, S. Schopferer, S. Nau, S. Shearing, P.R. Rack, A. Tags: X-ray imaging Li-ion batteries safety thermal runaway in situ studies abuse tests propagation research papers Source Type: research
TomocuPy – efficient GPU-based tomographic reconstruction with asynchronous data processing
Fast 3D data analysis and steering of a tomographic experiment by changing environmental conditions or acquisition parameters require fast, close to real-time, 3D reconstruction of large data volumes. Here a performance-optimized TomocuPy package is presented as othera GPU alternative to the commonly used central processing unit (CPU) based TomoPy package for tomographic reconstruction. TomocuPy utilizes modern hardware capabilities to organize a 3D asynchronous reconstruction involving parallel read/write operations with storage drives, CPU – GPU data transfers, and GPU computations. In the asynchronous reconstruction, ...
Source: Journal of Synchrotron Radiation - November 26, 2022 Category: Physics Authors: Nikitin, V. Tags: tomography reconstruction GPU NVMe SSD conveyor processing asynchronous processing research papers Source Type: research
The CLEAR X-ray emission spectrometer available at the CLAESS beamline of ALBA synchrotron
The CLEAR X-ray emission spectrometer installed at the CLAESS beamline of the ALBA synchrotron is described. It is an energy-dispersive spectrometer based on Rowland circle geometry with 1 m-diameter circle. The energy dispersion is achieved by the combination of a diced analyzer crystal and a unidimensional detector. A single unconventional dynamically bent analyzer crystal (Si 111) permits a wide energy range to be covered, just by exploiting its different reflections (333, 444, 555, 777, 888): 6 – 22 keV, with a spectrometer efficiency that decreases above 11 keV because of the Si detector thickness (M...
Source: Journal of Synchrotron Radiation - November 24, 2022 Category: Physics Authors: Simonelli, L. Marini, C. Ribo, L. Homs, R. Avila, J. Heinis, D. Preda, I. Klementiev, K. Tags: X-ray emission spectroscopy innovative spectrometer energy dispersive wide and continuous energy range beamlines Source Type: research
Multi-objective genetic algorithm for synchrotron radiation beamline optimization
In this study, a novel optimization method based on a multi-objective genetic algorithm is introduced, the first attempt to optimize a beamline with multiple objectives. In order to verify this method, beamline ID17 of the European Synchrotron Radiation Facility (ESRF) is taken as an example for simulation, with energy and dose rate as objectives. The result shows that this method can be effective for beamline optimization, and an optimal solution set can be obtained within 30 generations. For the solutions whose objectives are both improved compared with those of ESRF beamline ID17, the maximums of energy and dose rate in...
Source: Journal of Synchrotron Radiation - November 24, 2022 Category: Physics Authors: Zhang, J. Qi, P. Wang, J. Tags: beamline design multi-objective optimization genetic algorithm research papers Source Type: research
Data-driven modeling and control of an X-ray bimorph adaptive mirror
Adaptive X-ray mirrors are being adopted on high-coherent-flux synchrotron and X-ray free-electron laser beamlines where dynamic phase control and aberration compensation are necessary to preserve wavefront quality from source to sample, yet challenging to achieve. Additional difficulties arise from the inability to continuously probe the wavefront in this context, which demands methods of control that require little to no feedback. In this work, a data-driven approach to the control of adaptive X-ray optics with piezo-bimorph actuators is demonstrated. This approach approximates the non-linear system dynamics with a discr...
Source: Journal of Synchrotron Radiation - November 24, 2022 Category: Physics Authors: Gunjala, G. Wojdyla, A. Goldberg, K.A. Qiao, Z. Shi, X. Assoufid, L. Waller, L. Tags: adaptive optics beamline optics machine learning control X-rays research papers Source Type: research
Automatic synchrotron tomographic alignment schemes based on genetic algorithms and human-in-the-loop software
Tomography imaging methods at synchrotron light sources keep evolving, pushing multi-modal characterization capabilities at high spatial and temporal resolutions. To achieve this goal, small probe size and multi-dimensional scanning schemes are utilized more often in the beamlines, leading to rising complexities and challenges in the experimental setup process. To avoid spending a significant amount of human effort and beam time on aligning the X-ray probe, sample and detector for data acquisition, most attention has been drawn to realigning the systems at the data processing stages. However, post-processing cannot correct...
Source: Journal of Synchrotron Radiation - November 21, 2022 Category: Physics Authors: Zhang, Z. Bi, X. Li, P. Zhang, C. Yang, Y. Liu, Y. Chen, G. Dong, Y. Liu, G. Zhang, Y. Tags: scanning tomography rotation-axis alignment sample alignment genetic algorithms human-in-the-loop computed tomography X-ray microscopy research papers Source Type: research
A new high temperature, high heating rate, low axial gradient capillary heater
A new heater design, capable of fast heating and cooling to and from>1000 ° C, has been developed at the Swiss – Norwegian Beamlines, European Synchrotron Radiation Facility, France. The design uses a SiC head to distribute heat, and resistive Si3N4 heat cartridges to provide heat. (Source: Journal of Synchrotron Radiation)
Source: Journal of Synchrotron Radiation - November 18, 2022 Category: Physics Authors: Marshall, K.P. Emerich, H. McMonagle, C.J. Fuller, C.A. Dyadkin, V. Chernyshov, D. Beek, W. van Tags: capillary heater X-ray scattering X-ray absorption laboratory notes Source Type: research
High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique
The most accurate measurements of the mass attenuation coefficient for metals at low temperature for the zinc K-edge from 9.5 keV to 11.5 keV at temperatures of 10 K, 50 K, 100 K and 150 K using the hybrid technique are reported. This is the first time transition metal X-ray absorption fine structure (XAFS) has been studied using the hybrid technique and at low temperatures. This is also the first hybrid-like experiment at the Australian Synchrotron. The measured transmission and fluorescence XAFS spectra are compared and benchmarked against each other with detailed systematic analyses. A recent met...
Source: Journal of Synchrotron Radiation - November 18, 2022 Category: Physics Authors: John, M.W. Sier, D. Ekanayake, R.S.K. Schalken, M.J. Tran, C.Q. Johannessen, B. de Jonge, M.D. Kappen, P. Chantler, C.T. Tags: XAFS hybrid technique transmission and fluorescence zinc thermal evolution research papers Source Type: research
Speckle contrast of interfering fluorescence X-rays
With the development of X-ray free-electron lasers (XFELs), producing pulses of femtosecond durations comparable with the coherence times of X-ray fluorescence, it has become possible to observe intensity – intensity correlations due to the interference of emission from independent atoms. This has been used to compare durations of X-ray pulses and to measure the size of a focusedX-ray beam, for example. Here it is shown that it is also possible to observe the interference of fluorescence photons through the measurement of the speckle contrast of angle-resolved fluorescence patterns. Speckle contrast is often used as a...
Source: Journal of Synchrotron Radiation - November 18, 2022 Category: Physics Authors: Trost, F. Ayyer, K. Oberthuer, D. Yefanov, O. Bajt, S. Caleman, C. Weimer, A. Feld, A. Weller, H. Boutet, S. Koglin, J. Timneanu, N. von Zanthier, J. R ö hlsberger, R. Chapman, H.N. Tags: speckle contrast estimation X-ray fluorescence incoherent diffraction imaging XPCS research papers Source Type: research
Stability of Bragg reflectors under megahertz heat load at XFELs
Modern X-ray free-electron laser (XFEL) sources can deliver photon pulses with millijoule pulse energies and megahertz repetition rate. As shown by the simulations in this work, for particular cases the dynamical heat load effects for Bragg reflectors could cause problems at these facilities. These problems would be underestimated if only quasi-static thermoelastic simulations are considered. Nevertheless, for the sake of simplicity the quasi-static approach is a common choice for estimating heat load effects. To emphasize the relevance of dynamical thermoelastic effects, the response to the partial absorption of an X-ray ...
Source: Journal of Synchrotron Radiation - November 17, 2022 Category: Physics Authors: Bahns, I. Rauer, P. Rossbach, J. Sinn, H. Tags: thermoelastic megahertz repetition rate XFEL XFELO dynamical heat load research papers Source Type: research
Average and statistical properties of coherent radiation from steady-state microbunching
A promising accelerator light source mechanism called steady-state microbunching (SSMB) is being actively studied. With the combination of strong coherent radiation from microbunching and high repetition rate of a storage ring, high-average-power narrow-band radiation can be anticipated from an SSMB storage ring, with wavelengths ranging from THz to soft X-ray. Such a novel light source could provide new opportunities for accelerator photon science like high-resolution angle-resolved photoemission spectroscopy and industrial applications like extreme ultraviolet (EUV) lithography. In this paper, a theoretical and numerical...
Source: Journal of Synchrotron Radiation - November 16, 2022 Category: Physics Authors: Deng, X.J. Zhang, Y. Pan, Z.L. Li, Z.Z. Bian, J.H. Tsai, C.-Y. Li, R.K. Chao, A.W. Huang, W.H. Tang, C.X. Tags: accelerator light source steady-state microbunching transverse form factor radiation fluctuation EUV lithography ARPES coherent radiation research papers Source Type: research
ROI-Finder: machine learning to guide region-of-interest scanning for X-ray fluorescence microscopy
The microscopy research at the Bionanoprobe (currently at beamline 9-ID and later 2-ID after APS-U) of Argonne National Laboratory focuses on applying synchrotron X-ray fluorescence (XRF) techniques to obtain trace elemental mappings of cryogenic biological samples to gain insights about their role in critical biological activities. The elemental mappings and the morphological aspects of the biological samples, in this instance, the bacterium Escherichia coli (E. Coli), also serve as label-free biological fingerprints to identify E. coli cells that have been treated differently. The key limitations of achieving good id...
Source: Journal of Synchrotron Radiation - October 25, 2022 Category: Physics Authors: Chowdhury, M.A.Z. Ok, K. Luo, Y. Liu, Z. Chen, S. O'Halloran, T.V. Kettimuthu, R. Tekawade, A. Tags: X-ray fluorescence region-of-interest detection principal components analysis live cell imaging microscopy E. coli fuzzy clustering computer programs Source Type: research
Indirect X-ray detectors with single-photon sensitivity
The new generation of synchrotron light sources are pushing X-ray detectors to their limits. Very demanding conditions with unprecedented flux and higher operating energies now require high-performance X-ray detectors combining sensitivity, efficiency and scalability. Over the years, hybrid pixel detectors have supplemented indirect detectors based on scintillation, with undeniable advantages. Such detectors based on silicon are, however, rather expensive to produce and are no more satisfying in terms of X-ray stopping power when targeting energies above 20 keV. An indirect detector with single X-ray photon sensitivity...
Source: Journal of Synchrotron Radiation - October 25, 2022 Category: Physics Authors: Pauwels, K. Douissard, P.-A. Tags: X-ray detectors indirect detection single photons scintillation sCMOS research papers Source Type: research
AMX – the highly automated macromolecular crystallography (17-ID-1) beamline at the NSLS-II
The highly automated macromolecular crystallography beamline AMX/17-ID-1 is an undulator-based high-intensity (>5 × 1012 photons s − 1), micro-focus (7 µ m × 5 µ m), low-divergence (1 mrad × 0.35 mrad) energy-tunable (5 – 18 keV) beamline at the NSLS-II, Brookhaven National Laboratory, Upton, NY, USA. It is one of the three life science beamlines constructed by the NIH under the ABBIX project and it shares sector 17-ID with the FMX beamline, the frontier micro-focus macromolecular crystallography beamline. AMX saw first light in March 2016 and started general user operation in February ...
Source: Journal of Synchrotron Radiation - October 21, 2022 Category: Physics Authors: Schneider, D.K. Soares, A.S. Lazo, E.O. Kreitler, D.F. Qian, K. Fuchs, M.R. Bhogadi, D.K. Antonelli, S. Myers, S.S. Martins, B.S. Skinner, J.M. Aishima, J. Bernstein, H.J. Langdon, T. Lara, J. Petkus, R. Cowan, M. Flaks, L. Smith, T. Shea-McCarthy, G. Idi Tags: macromolecular crystallography automation beamline synchrotron source high throughput micro-beam real-time feedback beamlines Source Type: research
Investigation of polycapillary half lenses for quantitative confocal micro-X-ray fluorescence analysis
The use of polycapillary optics in confocal micro-X-ray fluorescence analysis (CMXRF) enables the destruction-free 3D investigation of the elemental composition of samples. The energy-dependent transmission properties, concerning intensity and spatial beam propagation of three polycapillary half lenses, which are vital for the quantitative interpretation of such CMXRF measurements, are investigated in a monochromatic confocal laboratory setup at the Atominstitut of TU Wien, and a synchrotron setup on the BAMline beamline at the BESSY II Synchrotron, Helmholtz-Zentrum-Berlin. The empirically established results, concerning ...
Source: Journal of Synchrotron Radiation - October 21, 2022 Category: Physics Authors: Iro, M. Ingerle, D. Radtke, M. Guilherme Buzanich, A. Kregsamer, P. Streli, C. Tags: polycapillary optics confocal micro-XRF X-ray fluorescence 3D elemental analysis X-ray optics research papers Source Type: research
