Author: Yao, X.
Paper Title Page
MO2AO02 A Beamline and Experiment Control System for the SLS 2.0 71
 
  • K. Wakonig, C. Appel, A. Ashton, S. Augustin, M. Holler, I. Usov, J. Wyzula, X. Yao
    PSI, Villigen PSI, Switzerland
 
  The beamlines of the Swiss Light Source (SLS) predominantly rely on EPICS standards as their control interface but in contrast to many other facilities, there is up to now no standardized user interfacing component to orchestrate, monitor and provide feedback on the data acquisition. As a result, the beamlines have either adapted community solutions or developed their own high-level orchestration system. For the upgrade project SLS 2.0, a sub-project was initiated to facilitate a unified beamline and experiment control system. During a pilot phase and a first development cycle, libraries of the Bluesky project were used, combined with additional in-house developed services, and embedded in a service-based approach with a message broker and in-memory database. Leveraging the community solutions paired with industry standards, enabled the development of a highly modular system which provides the flexibility needed for a constantly changing scientific environment. One year after the development started, the system was already tested during many weeks of user operation and recently received the official approval by the involved divisions to be rolled out as part of the SLS 2.0 upgrade.  
slides icon Slides MO2AO02 [3.119 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-MO2AO02  
About • Received ※ 05 October 2023 — Revised ※ 09 October 2023 — Accepted ※ 12 October 2023 — Issued ※ 14 October 2023
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TUPDP105 The SLS 2.0 Beamline Control System Upgrade Strategy 807
 
  • T. Celcer, X. Yao, E. Zimoch
    PSI, Villigen PSI, Switzerland
 
  After more than 20 years of successful operation the SLS facility will undergo a major upgrade, replacing the entire storage ring, which will result in a significantly improved beam emittance and brightness. In order to make use of improved beam characteristics, beamline upgrades will also play a crucial part in the SLS 2.0 project. However, offering our users an optimal beamtime experience will strongly depend on our ability to leverage the beamline control and data acquisition tools to a new level. Therefore, it is necessary to upgrade and modernize the majority of our current control system stack. This article provides an overview of the planned beamline control system upgrade from the technical as well as project management perspective. A portfolio of selected technical solutions for the main control system building blocks will be discussed. Currently, the controls HW in SLS is based on the VME platform, running the VxWorks operating system. Digital/analog I/O, a variety of motion solutions, scalers, high voltage power supplies, and timing and event system are all provided using this platform. A sensible migration strategy is being developed for each individual system, along with the overall strategy to deliver a modern high-level experiment orchestration environment. The article also focuses on the challenges of the phased upgrade, coupled with the unavoidable coexistence with existing VME-based legacy systems due to time, budget, and resource constraints.  
poster icon Poster TUPDP105 [4.148 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-TUPDP105  
About • Received ※ 04 October 2023 — Revised ※ 11 October 2023 — Accepted ※ 05 December 2023 — Issued ※ 15 December 2023
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FR1BCO04 The Controls and Science IT Project for the SLS 2.0 Upgrade 1616
 
  • A. Ashton, H.-H. Braun, S. Fries, X. Yao, E. Zimoch
    PSI, Villigen PSI, Switzerland
 
  Operation of the Swiss Light Source (SLS) at the Paul Scherrer Institue (PSI) in Switzerland began in 2000 and it quickly became one of the most successful synchrotron radiation facilities worldwide, providing academic and industry users with a suite of excellent beamlines covering a wide range of methods and applications. To maintain the SLS at the forefront of synchrotron user facilities and to exploit all of the improvement opportunities, PSI prepared a major upgrade project for SLS, named SLS 2.0. The Controls and Science IT (CaSIT) subproject was established to help instigate a project management structure to facilitate new concepts, increased communication, and clarify budgetary responsibility. This article focusses on the progress being made to exploit the current technological opportunities offered by a break in operations whilst taking into consideration future growth opportunities and realistic operational support within an academic research facility.  
slides icon Slides FR1BCO04 [6.389 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS2023-FR1BCO04  
About • Received ※ 05 October 2023 — Revised ※ 10 October 2023 — Accepted ※ 20 November 2023 — Issued ※ 17 December 2023
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