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Open AccessJournal ArticleDOI

Optics for coherent X-ray applications.

TLDR
Developments of optics for coherent X-ray applications and their role in diffraction-limited storage rings are described.
Abstract
Developments of X-ray optics for full utilization of diffraction-limited storage rings (DLSRs) are presented. The expected performance of DLSRs is introduced using the design parameters of SPring-8 II. To develop optical elements applicable to manipulation of coherent X-rays, advanced technologies on precise processing and metrology were invented. With propagation-based coherent X-rays at the 1 km beamline of SPring-8, a beryllium window fabricated with the physical-vapour-deposition method was found to have ideal speckle-free properties. The elastic emission machining method was utilized for developing reflective mirrors without distortion of the wavefronts. The method was further applied to production of diffraction-limited focusing mirrors generating the smallest spot size in the sub-10 nm regime. To enable production of ultra-intense nanobeams at DLSRs, a low-vibration cooling system for a high-heat-load monochromator and advanced diagnostic systems to characterize X-ray beam properties precisely were developed. Finally, new experimental schemes for combinative nano-analysis and spectroscopy realised with novel X-ray optics are discussed.

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Journal ArticleDOI

Diffraction-limited storage rings - a window to the science of tomorrow.

TL;DR: This article summarizes the contributions in this special issue on Diffraction-Limited Storage Rings and analyses the progress in accelerator technology enabling a significant increase in brightness and coherent fraction of the X-ray light provided by storage rings.
Journal ArticleDOI

Overview of the SACLA facility.

TL;DR: An overview of SACLA operating as a user facility and the updated status of the light source and the beamline is summarized.
Journal ArticleDOI

New developments in high-pressure X-ray diffraction beamline for diamond anvil cell at SPring-8

TL;DR: An overview of the recently renovated high-pressure X-ray diffraction (XRD) BL10XU beamline for the diamond anvil cell at SPring-8 is presented in this article.
Journal ArticleDOI

Design of the mirror optical systems for coherent diffractive imaging at the SPB/SFX instrument of the European XFEL

TL;DR: In this article, the authors present the design and simulated performance of two state-of-the-art Kirkpatrik-Baez mirror systems that form the primary foci of the single particles, clusters and biomolecules and serial femtosecond crystallography (SPB/SFX) instrument of the European XFEL.
References
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Journal ArticleDOI

Single-shot beam-position monitor for x-ray free electron laser.

TL;DR: Owing to high dose tolerance and transparency of the diamond film, the monitor is suitable for routine diagnostics of extremely intense x-ray pulses from the FEL.
Journal ArticleDOI

Characterization of the transverse coherence of hard synchrotron radiation by intensity interferometry.

TL;DR: The transverse coherence of x rays was measured with an intensity interferometer using a 120-microeV-bandwidth monochromator and a vertical source profile of a 25-m long undulator of SPring-8 as well as the coherence degradation by a phase object in the beam path were quantitatively characterized.
Journal ArticleDOI

Compact active/adaptive x‐ray mirror: Bimorph piezoelectric flexible mirror

TL;DR: In this paper, a very compact active x-ray mirror based on the properties of bimorph piezoelectric systems has been developed at the ESRF and a white focused beam of 35 μm has been obtained on an ESR F bending magnet beamline that corresponds to a demagnification of 1/18.
Journal ArticleDOI

X-ray monochromator with an energy resolution of 8×10−9 at 14.41 keV

Abstract: An ultrahigh-resolution x-ray crystal monochromator providing a 120 μeV bandwidth at 14.41 keV is presented. The design, which uses four independent silicon crystals and has an output beam parallel to the incident beam, may be generalized to arbitrary energies. Fluxes of 1.3×106 photons/s (1.0×107 photons/s) in bandwidths of 120±15 μeV (140±15 μeV) were measured. The performance of the monochromator, including the preservation of coherence through it, was verified by measurement of a 9.6±2.0% enhancement in the coincidence rate (i.e., γ(2)−1=0.096±0.020) in an intensity correlation experiment.
Proceedings ArticleDOI

Incoherent x-ray mirror surface metrology

TL;DR: In this paper, an x-ray long trace profiler (XLTP) was proposed to measure surface slope errors with precision and accuracy better than 25 nrad (rms) and 50 nrad(mis), respectively, with alateral resolution of 5 mm in the meridional and less than I mm in a sagittal direction.
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