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Published on 22 January 2021
Use Case 8 – Remote, collaborative access to beamline optics simulations
X-ray optics simulations are regularly performed both in the design of the beamlines and during experiments for alignment and/or experimental results validation. These simulations are usually performed by dedicated optics groups within synchrotrons and the beamline scientists are usually not the ones performing whole simulations, but only collaborate on the results. This process proves to […]
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Published on 21 January 2021
Use Case 7 – Data Transfer using EGI-DataHub/Onedata
Until recently, most Neutron and X-ray (Photon and Neutron also known as PaN) facility users had to use predominantly portable media to transfer data produced by the research infrastructure’s (RI) instruments to their home lab for analyses. This was the predominant model some years ago, when the volume of data was relatively low and compatible […]
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Published on 18 January 2021
Use Case 6 – Analysing 2D uXRD maps for cultural heritage samples
Improving the efficiency of 2D uXRD experiments (many different users, a possible regular beamtime, remote experiment), would help to have a dedicated Jupyter notebook for data processing. It would be a good way: Use Case Action Flow: Impacts from the implementation: The goal will be to perform 2D µXRD maps on painting fragments from various […]
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Published on 14 January 2021
Use Case 5 – Detector Calibration
European XFEL uses a range of pixel detectors, including some which are custom built to cope with the high pulse rate. The raw data recorded from these detectors needs various corrections applied as a first step in analysing it. The workflows for applying corrections and for creating the calibration constants they use are implemented in […]
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Published on 14 January 2021
Use Case 4 – SASE Pulse Delivery Analysis
An analysis workflow implemented to a Jupyter notebook was used to look at XGM (X-ray Gas Monitor) data that was recorded in the same time interval, but in different parts of European XFEL. In essence, pulse energy (intensity) values from one XGM in SASE1 were compared to another set from an XGM in SASE3. This […]
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Published on 14 January 2021
Use Case 3 – Machine Learning Based Spectra Classification
At the European XFEL, X-ray pulses can be generated with only 220ns separation in time and a maximum of 27000 pulses per second. In experiments at European XFEL, spectral changes can indicate the change of the system under investigation and so the progress of the experiment. An immediate feedback on the actual status (e.g., time […]
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Published on 14 January 2021
Use Case 2 – Operation of X-ray gas monitors at the European XFEL
X-ray gas monitors (XGMs) are operated at the European XFEL for non-invasive single-shot pulse energy measurements and average beam position monitoring. They are used for tuning and maintaining the self-amplified spontaneous emission (SASE) operation and for sorting single-shot experimental data according to the pulse-resolved energy monitor data. The XGMs were developed at DESY based on […]
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Published on 12 January 2021
Use Case 1 – EuXFEL Data in NeXus Golden Standard
There were great efforts put in the last two decades in the research community to elaborate a common standard for high data-rate macromolecular crystallography (HDRMX). This agreed “Gold Standard” builds on the NeXus/HDF5 NXmx application definition and the International Union of Crystallography (IUCr) imgCIF/CBF dictionary, and it is compatible with major data-processing programmes and pipelines. […]
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