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    LINAC2026 - 33rd Linear Accelerator Conference

    16–21 Aug 2026
    Daejeon Convention Center
    Asia/Seoul timezone

    Contacts

    Technical commissioning of the ESS linac cavities for the Beam on Dump Phases

    TH1A004
    20 Aug 2026, 09:30
    20m
    2F Grand Ballroom (Daejeon Convention Center)

    2F Grand Ballroom

    Daejeon Convention Center
    Invited Talk (Invitation Only) MC4.A07: Room temperature RF TH1A - Invited Talks

    Speaker

    Marten Koopmans (European Spallation Source)

    Description

    The ESS linac has been commissioned in two different operation phases operation on the 12 kW commissioning beam dump. In 2025 the linac was operated at full duty cycle in the normal-conducting section (up to 90 MeV) and at reduced duty cycle in the superconducting section (up to 870 MeV), due to limitations in the cooling infrastructure and staged implementation of low-level RF (LLRF) functionalities. In the present phase the whole linac has been operated up to its full duty cycle at 14 Hz and 3.2 ms RF pulses, showing Lorentz force detuning (LFD) capabilities with long RF pulses in the superconducting RF (SRF) structures. This contribution summarizes the staged technical commissioning phases, presenting the conditioning experience and the setup for operation at nominal RF performances.

    Footnotes

    Also relevant for MCR4.A08, SRF

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    Author

    Marten Koopmans (European Spallation Source)

    Co-authors

    Anirban Bhattacharyya (European Spallation Source) Andrea Bignami (European Spallation Source) Nuno Elias (European Spallation Source) Francesco Grespan (Istituto Nazionale di Fisica Nucleare) Mr Artur Krawczyk (European Spallation Source) Emanuele Laface (European Spallation Source) Cecilia Maiano (European Spallation Source) Krister Mårtensson (European Spallation Source) Mr Mateusz Nabywaniec (European Spallation Source) Domenic Nicosia (European Spallation Source) Andrea Passarelli (European Spallation Source) Paolo Pierini (European Spallation Source) Henry Przybilski (European Spallation Source) Stuart Sandilands (European Spallation Source) Marek Skiba (European Spallation Source) Anders Svensson (European Spallation Source) Emmanouil Trachanas (European Spallation Source) Peter van Velze (European Spallation Source) Muyuan Wang (European Spallation Source)

    Presentation materials

    TH1A004-Marten_Koopmans.pdf