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    HL-LHC IT String Day V

    9 September 2025
    CERN
    Europe/Zurich timezone

    Session

    Status & Readiness for Operations

    9 Sept 2025, 14:20
    30/7-018 - Kjell Johnsen Auditorium (CERN)

    30/7-018 - Kjell Johnsen Auditorium

    CERN

    190
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    1. 23. Cryogenics for Operations (WP16 / TE-CRG)
      Aleksandra Onufrena (CERN)
      09/09/2025, 14:20

      The cryogenic system of the HL-LHC IT String was successfully commissioned in 2023-2024 in a standalone mode (without magnets and SC-link). In 2024-2025 the cryogenic system was prepared for the commissioning and operation of the HL-LHC IT String including all its components. This presentation covers:

      • Follow-up on the comments from String Day IV

      • Status of the cryogenic system

      -...

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    2. 13. Machine Protection Equipment (WP7 / TE-MPE)
      Daniel Wollmann (CERN)
      09/09/2025, 14:45

      This presentation will give an overview of the status of the installation and testing of protection equipment in the IT String and its controls integration. Furthermore, the foreseen tests at before and after cool-down will be addressed.

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    3. 24. Warm Powering Equipment (WP6b / SY-EPC)
      Hugues Thiesen (CERN)
      09/09/2025, 15:30

      This warm powering equipment talk presents the progress of the WCBB & WCP design and especially how the ElQA issue has been solved. Afterwards, the status of the HL-LHC String equipment is presented, in particular the restarting tests before the HWC of the HL-LHC String facility. Finally, the impacts of the new delay and the constraints on LHC operation and LS3 are discussed.

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    4. 12. Control Layers & Software for Operations (WP16 / TE-MPE)
      Sebastien Blanchard (CERN)
      09/09/2025, 15:55

      The status of the control systems and their interfaces is presented with a particular focus on the software layers essential for the powering and magnet protection tests during the IT String validation program. Ensuring integration of the new HL-LHC device types and their operational readiness requires close collaboration between development teams, equipment owners and the IT String operation...

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    5. 17. AccTesting for the HL-LHC IT String (WP7/TE-MPE)
      Aleksandra Mnich (CERN)

      The Accelerator Testing framework has been used successfully to facilitate the execution and analysis of thousands of tests during the hardware commissioning campaigns of LHC and during its operations to qualify the powering systems. The presentation covers the extensions of AccTesting and its ecosystem needed to support the commissioning of IT String facility. Describes the framework that is...

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