Publications by authors named "Geoff Preece"

With the recent increase in research into ferroelectric, anti-ferroelectric and piezoelectric materials, studying the solid-state properties under applied electric fields is vital in understanding the underlying processes. Where this behaviour is the result of atomic displacements, crystallographic insight has an important role. This work presents a sample environment designed to apply an electric field to single-crystal samples on the small-molecule single-crystal diffraction beamline I19, Diamond Light Source (UK).

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Article Synopsis
  • - B21 is a small-angle X-ray scattering (SAXS) beamline located at the Diamond Light Source in the UK, using a bending magnet source from a 3 GeV storage ring to generate high-intensity X-ray beams.
  • - The setup includes advanced equipment like a double multi-layer monochromator and toroidal focusing optic, achieving a high photon delivery rate to a small focal spot, and offering automated and manual sample loading options.
  • - Since 2013, B21 has been operational for users, providing effective measurement capabilities for various biological macromolecules due to its extensive scattering vector range and low background noise.
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VMXi is a new high-flux microfocus macromolecular crystallography beamline at Diamond Light Source. The beamline, dedicated to fully automated and fully remote data collection of macromolecular crystals in situ, allows rapid screening of hundreds of crystallization plates from multiple user groups. Its main purpose is to give fast feedback at the complex stages of crystallization and crystal optimization, but it also enables data collection of small and delicate samples that are particularly difficult to harvest using conventional cryo-methods, crystals grown in the lipidic cubic phase, and allows for multi-crystal data collections in drug discovery programs.

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Systematic studies of the performance of a water-cooled X-ray monochromator, designed and built for the B16 Test beamline at the Diamond Light Source, UK, are presented. A technical description of the monochromator is given and the results of commissioning measurements are discussed. Overall, the monochromator satisfies the original specifications well and meets all the major requirements of the versatile beamline.

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