Author: Garcia-Tabares, A.    [García-Tabarés Valdivieso, A.]
Paper Title Page
MO2AO03 The Solid Sample Scanning Workflow at the European XFEL 78
 
  • A. García-Tabarés Valdivieso, C. Deiter, L. Gelisio, S. Göde, S. Hauf, A.K. Kardoost, I. Karpics, J. Schulz, F. Sohn
    EuXFEL, Schenefeld, Germany
  
  The fast solid sample scanner (FSSS) used at the HED instrument of the European XFEL (EuXFEL) enables data collection from multiple samples mounted into standardized frames which can be exchanged via a transfer system without breaking the interaction chamber vacuum. In order to maximize the effective target shot repetition rate, it is a key requirement to use sample holders containing pre-aligned targets measured on an accurate level of a few micrometers. This contribution describes the automated sample delivery workflow for performing solid sample scanning using the FSSS. This workflow covers the entire process, from automatically identifying target positions within the sample, using machine learning algorithms, to set the parameters needed to perform the scans. The integration of this solution into the EuXFEL control system, Karabo, not only allows to control and perform the scans with the existing scan tool but also provides tools for image annotation and data acquisition. The solution thus enables the storage of data and metadata for future correlation across a variety of beamline parameters set during the experiment.  
slides icon Slides MO2AO03 [12.892 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO2AO03  
About • Received ※ 06 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 11 December 2023 — Issued ※ 20 December 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
TH1BCO06 The Karabo Control System 1120
 
  • S. Hauf, N. Anakkappalla, J.T. Bin Taufik, V. Bondar, R. Costa, W. Ehsan, S.G. Esenov, G. Flucke, A. García-Tabarés Valdivieso, G. Giovanetti, D. Goeries, D.G. Hickin, I. Karpics, A. Klimovskaia, A. Parenti, A. Samadli, H. Santos, A. Silenzi, M.A. Smith, F. Sohn, M. Staffehl, C. Youngman
    EuXFEL, Schenefeld, Germany
  
  The Karabo distributed control system has been developed to address the challenging requirements of the European X-ray Free Electron Laser facility*, which include custom-made hardware, and high data rates and volumes. Karabo implements a broker-based SCADA environment**. Extensions to the core framework, called devices, provide control of hardware, monitoring, data acquisition and online processing on distributed hardware. Services for data logging and for configuration management exist. The framework exposes Python and C++ APIs, which enable developers to quickly respond to requirements within an efficient development environment. An AI driven device code generator facilitates prototyping. Karabo’s GUI features an intuitive, coding-free control panel builder. This allows non-software engineers to create synoptic control views. This contribution introduces the Karabo Control System out of the view of application users and software developers. Emphasis is given to Karabo’s asynchronous Python environment. We share experience of running the European XFEL using a clean-sheet developed control system, and discuss the availability of the system as free and open source software.
* Tschentscher, et al. Photon beam transport and scientific instruments at the European XFEL App. Sci.7.6(2017):592
** Hauf, et al. The Karabo distributed control system J.Sync. Rad.26.5(2019):1448ff
 		 
slides icon Slides TH1BCO06 [5.878 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TH1BCO06  
About • Received ※ 06 October 2023 — Accepted ※ 03 December 2023 — Issued ※ 12 December 2023  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)