Category: Issue 09
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From Work Package deliverables to the fully integrated HL-LHC magnet circuits
By nature, HL-LHC magnet circuits span many different technical domains and teams. Two dedicated international reviews – in 2016 and 2019 – and three internal CERN reviews – in 2017, 2020 and 2023 – have helped shape the HL-LHC magnet circuits, the associated instrumentation and the constituting systems being prepared at CERN and throughout the…
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Optimising HL-LHC activities for the LS3 schedule
The LS3 LHC schedule, including the HL-LHC activities, was presented at the LS3 Readiness Review on 11-13thSeptember 2024. Following this review, a significant update was announced: LS3 will commence in the LHC on 29thJune 2026. By then, the critical path duration for the LS3 LHC in-work schedule was 51.5 months. Thanks to an intense optimisation…
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Mid-term planning for testing of components in SM18
The SM18 test facility continues to play a central role in validating critical components for the HL-LHC Project. Currently all upgrades of the various test stations have been completed, including a second cold box providing helium for the IT String, a large update campaign for magnet test benches, new instrumentation hardware with quench antenna and…
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IT String – Completion of installation of major components and start of interconnection works
The HL-LHC IT String installation is entering its final phase in the SM18 building at CERN. All major components are now in place, following a series of installation and validation activities executed by the end of 2024 and beginning of 2025. These tasks have been carried out on schedule, within scope and following extensive preparations…
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Prototype RFD cavity tests at TRIUMF: Status and progress with TCM0 and preparation for TCM1 activities
Major expenditures have been completed in time to spend the allocated funds and procure all components required for the cryostating activities of the 5 series RFD cryomodules. In February 2025, TRIUMF received a prototype RFD cavity (TCM0) from AUP after it had been tested at JLab with both warm and cold characterisations. The cavity passed…
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RF Dipole Cryomodule for SPS Tests (CERN & UK)
The RF dipole prototype cryomodule foreseen for tests with beam in the SPS tests was successfully repaired and commissioned in the SM18 facility at CERN in 2024. During the year-end technical stop (YETS) 2024-25, the cryomodule was installed in the SPS-LSS6 bypass dedicated to the crab cavity tests in the SPS. Immediately after the installation,…
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DQW Series Production Status – CERN & Research Instruments (RI)
The series DQW cavities manufactured at RI (eight cavities) and CERN (two cavities) have progressed significantly over the period of 2024-25. Two cavities, one from RI and one from CERN, were fully qualified with higher order mode (HOM) couplers in their final state well beyond the specification (4.7 MV) and sent to UK-STFC for cryostating…
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Progress of the in-kind contribution from the USA for series production and testing of radio-frequency dipole (RFD) cavities for the HL-LHC
The series production of bare and jacketed Radio-Frequency Dipole (RFD) cavities is progressing steadily at Zanon Research & Innovation Srl (ZRI) within the framework of the HL-LHC Accelerator Upgrade Project (AUP), coordinated by Fermilab. Manufacturing is proceeding at full capacity with multiple production activities – including cavity fabrication, chemical processing, and cleanroom assembly – executed…
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HL-LHC Crab Cavity Cryomodules – UK Collaboration Status
The first LHC crab cavity cryomodule build with the two qualified cavities from CERN is progressing well at Daresbury Laboratory. The DQW cryomodule is the first of four series cryomodules being built by the UK collaboration, following the RFD-SPS delivery, with a fifth DQW cryomodule to be built by CERN. Since the RFD build, the…
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Machine protection: series-production of Quench Heater Discharge Power Supply units well underway
The first batch of 48 series-production Quench Heater Discharge Power Supply (DQHDS) units, provided as an in-kind contribution by KEK, Japan, has just arrived at CERN. These units feature a new design developed by CERN for the HL-LHC upgrade and will operate together with the Coupling-Loss Induced Quench (CLIQ) systems to protect the HL-LHC inner…