Author: Carinan, C.
Paper Title Page
Remote User Operation with Karabo at the European XFEL  
  • A. Silenzi, V. Bondar, C. Carinan, R. Costa, W. Ehsan, S.G. Esenov, R. Fabbri, G. Flucke, G. Giovanetti, D. Goeries, S. Hauf, D.G. Hickin, A. Klimovskaia, A. Lein, J. Malka, D. Mamchyk, A. Parenti, J. Szuba, K. Wrona, C. Youngman
    EuXFEL, Schenefeld, Germany
  • D.P. Spruce
    MAX IV Laboratory, Lund University, Lund, Sweden
  At the European XFEL, scientific instruments are operated using the Karabo control system which has been developed in-house to serve the need of a tight integration of experiment control, data acquisition and data processing for fast experimental feedback. Karabo uses broker-based communication between its pluggable components, so-called devices. The generic, PyQt-based graphical user interface (GUI) interacts with the system via a TCP connection to a GUI server device. The travel and contact restrictions enacted in response to the COVID-19 pandemic have prevented many facility users from coming on site. In order to enable an easier remote user participation in experiments, a read-only version of the GUI server has been developed ad-hoc, and made available during Summer 2020. Obviously, easy and safe remote access has advantages beyond the current travel restrictions. Therefore, activities to provide a web-technology based front-end to Karabo have been accelerated. Perspectively, this interface aims to ensure remote accessibility, while conforming to scientific data and general privacy policies relevant for the European XFEL.  
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