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Instruments / Technical Area	Publication Details	Published	Actions
I14-Hard X-ray Nanoprobe	An uneven distribution of strontium in the coccolithophore Scyphosphaera apsteinii revealed by nanoscale X-ray fluorescence tomography Jessica Walker , Hallam J. M. Greene , Yousef Moazzam , Paul D. Quinn , Julia E. Parker , Gerald Langer Environmental Science: Processes & Impacts 3 DOI: 10.1039/D3EM00509G Diamond Proposal Number(s): [31325] Open Access Show Abstract ▼ Abstract: Coccolithophores are biogeochemically and ecologically important phytoplankton that produce a composite calcium carbonate-based exoskeleton – the coccosphere – comprised of individual platelets, known as coccoliths. Coccoliths are stunning examples of biomineralization; their formation featuring exceptional control over both biomineral chemistry and shape. Understanding how coccoliths are formed requires information about minor element distribution and chemical environment. Here, the first high-resolution 3D synchrotron X-ray fluorescence (XRF) mapping of a coccolith is presented, showing that the lopadoliths of Scyphosphaera apsteinii display stripes of different Sr concentration. The presence of Sr stripes is unaffected by elevated Sr in the culture medium, macro-nutrient concentration, and light intensity, indicating that the observed stripiness is an expression of the fundamental coccolith formation process in this species. Current Sr fractionation models, by contrast, predict an even Sr distribution and will have to be modified to account for this stripiness. Additionally, nano-XANES analyses show that Sr resides in a Ca site in the calcite lattice in both high and low Sr stripes, confirming a central assumption of current Sr fractionation models.	Feb 2024
Insertion Devices	Using artificial immune systems to sort and shim insertion devices at Diamond Light Source Joss Whittle , Mark Basham , Zena Patel , Edward Rial , Robert Oates , Yousef Moazzam Journal Of Physics: Conference Series 2380 14th International Conference on Synchrotron Radiation Instrumentation (SRI 2021) DOI: 10.1088/1742-6596/2380/1/012022 Open Access Show Abstract ▼ Abstract: This work presents the Opt-ID software developed by the Rosalind Franklin Institute (RFI) and Diamond Light Source (DLS) in collaboration with Helmholtz-Zentrum Berlin (HZB). Opt-ID allows for efficient simulation of synchrotron Insertion Devices (ID) and the B fields produced by a given arrangement of candidate magnets. It provides an optimization framework built on the Artificial Immune System (AIS) algorithm for swapping and adjusting magnets within an ID to observe how these changes would affect the magnetic field of a real-world device, guiding ID builders in the steps they should take during ID tuning. Code for Opt-ID is provided open-source under the Apache-2.0 License on Github: https://github.com/rosalindfranklininstitute/Opt-ID	Dec 2022

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