Precision white-beam slit design for high power-density x-ray undulator beamlines at the Advanced Photon Source

Shu, Deming; Brite, C.; Nian, T.; Yun, Wenbing; Haeffner, D. R.; E., E.; Ryding, D.; Collins, J.; Li, Y.; Kuzay, T.M.

doi:10.1063/1.1145851

Cited by 12 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compared to conventional sealed-tube sources, synchrotron radiation is between 10 4 and 10 12 times brighter, and rather than having a sharply peaked spectrum, it generally has a broad spectral range caused by emission of photons as charged particles accelerate in a magnetic field. More recently, the use of undulators at synchrotron sources (Mochizuki et al 1998, Shu et al 1995 has made possible greater manipulation of the spectrum produced. For monochromatic diffraction, the incident energy can be chosen using single-crystal monochromators.…”

Section: X-ray Sourcesmentioning

confidence: 99%

Dynamic Powder Crystallography With Synchrotron X-Ray Sources

Parise

Cahill

Lee

2000

The Canadian Mineralogist

View full text Add to dashboard Cite

The increased brightness, tunability, low divergence and low emittance of X-ray beams available at synchrotron X-ray sources facilitate a variety of powder-diffraction experiments not practical using conventional in-house sources. Furthermore, the increased availability of fast position-sensitive detectors, along with implementation of improved software, make possible new classes of experiments. These include time-resolved powder-diffraction of phase transitions, precipitation, recrystallization and ion-exchange reactions. Examples of time-resolved studies that highlight some of these developments include: (1) observations of the phases forming during reaction under controlled hydrothermal conditions (e.g., FeS); (2) full Rietveld structure refinement using time-resolved data to determine the mechanism of ion exchange in zeolites. The advent of area detectors, commonly coupled with focusing optics at synchrotrons, will further increase the time resolution at the synchrotron, possibly leading to a data glut. Solutions are available now, and developments in the near term will allow semi-automatic decisions on which datasets to analyze amongst the thousands collected.Keywords: synchrotron radiation, crystallography, time-resolved studies, diffraction, scattering, high pressure, element partitioning, phase diagrams, ion-exchange reactions, energy-dispersive diffraction. SOMMAIRELa luminance accrue, la possibilité de syntoniser, la faible divergence et le faible pouvoir émissif des faisceaux de rayons X disponibles aux sources synchrotron permettent une série d'expériences en diffraction X sur poudres qui ne sont pas du tout pratiques avec les sources conventionnelles. De plus, la disponibilité accrue de détecteurs efficaces sensibles à la position et de logiciels améliorés rend possible de nouvelles sortes d'expériences. Par exemple, il est maintenant possible d'étudier par diffraction X sur poudres le progrès dans le temps d'une transition de phases, une précipitation, une recristallisation, et une réaction d'échange ionique. Nous décrivons les exemples suivants pour souligner certains de ces développements: (1) observations des phases apparaissant au cours d'une réaction hydrothermale sous conditions controlées, impliquant par exemple FeS; (2) affinement complet d'une structure par la méthode de Rietveld en utilisant des données échelonnées dans le temps pour étudier le mécanisme d'échange ionique dans les zéolites. L'installation de détecteurs à aire, couplée en général avec une focalisation optique dans le circuit d'un synchrotron, augmenteront surement la résolution temporelle dans de telles expériences, menant nécessairement à un surplus de données. Nous avons déjà des solutions à ce problème, et des développements dans un futur rapproché permettront des décisions semi-automatiques à propos de quels prélèvements de données sont à retenir pour analyse, parmi les milliers qui sont enregistrés.(Traduit par la Rédaction)Mots-clés: rayonnement synchrotron, cristallographie, résolution temporelle, diffractio...

show abstract

Section: X-ray Sourcesmentioning

confidence: 99%

Dynamic Powder Crystallography With Synchrotron X-Ray Sources

Parise

Cahill

Lee

2000

The Canadian Mineralogist

View full text Add to dashboard Cite

show abstract

“…The primary slits have been designed to be narrow, in order to fit into the available space, whilst still being able to absorb a high power load of 75 W mm À2 . In place of using the standard four-way blade system, the ID23 devices (one for each station) consist of two solid blocks of copper mounted on separate translation tables with both vertical and transversal movement (Shu et al, 1995;Marion & Zhang, 2003). The copper blocks have a gently tapered aperture through the centre, with a smallest aperture of 7 mm horizontal by 3 mm vertical, thereby distributing the absorbed white-beam heat load over a large water-cooled surface area.…”

Section: Primary Slitsmentioning

confidence: 99%

The ID23-1 structural biology beamline at the ESRF

et al. 2006

View full text Add to dashboard Cite

The demand for access to macromolecular crystallography synchrotron beam time continues to increase. To meet this demand the ESRF has constructed a dual station beamline using a canted undulator system as the X-ray source. The first phase of the beamline to be constructed is ID23-1, a tunable MAD-capable station with a mini-focus X-ray beam. The beamline makes use of well characterized optical elements: a channel-cut monochromator with a high-precision toroidal mirror to focus the X-ray beam. The beamline has been conceived with the aim of providing high levels of automation to create an industrial-like environment for protein crystallography. A new software suite has been developed to permit reliable easy operation for the beamline users and beamline staff. High levels of diagnostics are built in to allow rapid trouble-shooting. These developments are now being exported to the ESRF macromolecular crystallography beamline complex and have been made in a modular fashion to facilitate transportability to other synchrotrons.

show abstract

“…1. Each cooling block is milled into a right triangle of which the hypotenuse is inclined at 30° with respect to the photon beam direction in order to adopt a turned-grazing inclination to prevent photon beams impinging on the slit plates from scattering downstream and to enhance cooling efficiency [2]. Each cooling block is milled into a right triangle of which the hypotenuse is inclined at 30° with respect to the photon beam direction in order to adopt a turned-grazing inclination to prevent photon beams impinging on the slit plates from scattering downstream and to enhance cooling efficiency [2].…”

Section: Design Of Slitsmentioning

confidence: 99%

Combination PBPM and Slits at the Pohang Light Source

Gil¹,

Lee²,

Kim³

et al. 2007

AIP Conference Proceedings

View full text Add to dashboard Cite

Three combination photon beam position monitor (PBPM) and slits are in use at the photon transfer line (PTL) of the high flux macromolecular X-ray crystallography (HFMX) beamline at the Pohang Light Source. Each slit, based on a common basic design, drives its two slit plates through a double bellows assembly by two motors. The slits also adopt a turned-grazing inclination of 30 to restrict the passage of scattered photon beams and to enhance cooling efficiency. One of the slits has been successfully applied with cooling function in order to cool the heat load from a multi-pole wiggler. This paper describes the design details and design features of the slits and discusses the results of performance tests for their PBPM function. The combined PBPM function can be used for the analysis of the position behaviors of photon beams at the beamline.

show abstract

Precision white-beam slit design for high power-density x-ray undulator beamlines at the Advanced Photon Source

Cited by 12 publications

References 3 publications

Dynamic Powder Crystallography With Synchrotron X-Ray Sources

Dynamic Powder Crystallography With Synchrotron X-Ray Sources

The ID23-1 structural biology beamline at the ESRF

Combination PBPM and Slits at the Pohang Light Source

Contact Info

Product

Resources

About