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Instruments / Technical Area	Publication Details	Published	Actions
DIAD-Dual Imaging and Diffraction Beamline	Beamline K11 DIAD: a new instrument for dual imaging and diffraction at Diamond Light Source Christina Reinhard , Michael Drakopoulos , Sharif I. Ahmed , Hans Deyhle , Andrew James , Christopher M. Charlesworth , Martin Burt , John Sutter , Steven Alexander , Peter Garland , Thomas Yates , Russell Marshall , Ben Kemp , Edmund Warrick , Armando Pueyos , Ben Bradnick , Maurizio Nagni , A. Douglas Winter , Jacob Filik , Mark Basham , Nicola Wadeson , Oliver N. F. King , Navid Aslani , Andrew J. Dent Journal Of Synchrotron Radiation 28 DOI: 10.1107/S1600577521009875 Open Access Show Abstract ▼ Abstract: The Dual Imaging and Diffraction (DIAD) beamline at Diamond Light Source is a new dual-beam instrument for full-field imaging/tomography and powder diffraction. This instrument provides the user community with the capability to dynamically image 2D and 3D complex structures and perform phase identification and/or strain mapping using micro-diffraction. The aim is to enable in situ and in operando experiments that require spatially correlated results from both techniques, by providing measurements from the same specimen location quasi-simultaneously. Using an unusual optical layout, DIAD has two independent beams originating from one source that operate in the medium energy range (7–38 keV) and are combined at one sample position. Here, either radiography or tomography can be performed using monochromatic or pink beam, with a 1.4 mm × 1.2 mm field of view and a feature resolution of 1.2 µm. Micro-diffraction is possible with a variable beam size between 13 µm × 4 µm and 50 µm × 50 µm. One key functionality of the beamline is image-guided diffraction, a setup in which the micro-diffraction beam can be scanned over the complete area of the imaging field-of-view. This moving beam setup enables the collection of location-specific information about the phase composition and/or strains at any given position within the image/tomography field of view. The dual beam design allows fast switching between imaging and diffraction mode without the need of complicated and time-consuming mode switches. Real-time selection of areas of interest for diffraction measurements as well as the simultaneous collection of both imaging and diffraction data of (irreversible) in situ and in operando experiments are possible.	Nov 2021
I20-Scanning-X-ray spectroscopy (XAS/XES) Optics	The scanning four-bounce monochromator for beamline I20 at the Diamond Light Source Shusaku Hayama , Graham Duller , John Sutter , Monica Amboage , Roberto Boada , Adam Freeman , Luke Keenan , Brian Nutter , Leo Cahill , Pete Leicester , Ben Kemp , Nicholas Rubies , Sofia Diaz-Moreno Journal Of Synchrotron Radiation 25 DOI: 10.1107/S1600577518008974 Open Access Show Abstract ▼ Abstract: A description of the technical and design details of a scanning four-bounce crystal monochromator that has recently been commissioned for the Versatile X-ray Absorption Spectroscopy (XAS) beamline at Diamond Light Source is presented. This device consists of two independent rotary axes of unique design which are synchronized using a multiple read-head encoder system. This monochromator is shown to be capable of maintaining the flux throughput of the Bragg axes without the need of any external feedback mechanism from 4 to 20 keV. The monochromator is currently equipped with cryogenically cooled crystals with the upstream axis consisting of two independent Si(111) crystals and a pair of channel-cut crystals in the downstream axis. The possibility of installing an additional Si(311) crystal-set to extend the energy range to 34 keV is incorporated into the preliminary design of the device. Experimental data are presented showing the exceptional mechanical stability and repeatability of the monochromator axes.	Sep 2018

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