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Charline Marcel (CERN)09/06/2026, 08:30(2) Oral presentation
This presentation provides an updated overview of the FCC electrical grid and infrastructure following the Feasibility Study Report. The grid concept has been further developed to improve reliability according to updated requirements. The infrastructure of the various underground areas has been refined or preliminarily defined to support the integration studies of these facilities. In...
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Mario Parodi (CERN), Marta Gomis09/06/2026, 08:52(2) Oral presentation
This presentation provides an overview of the preliminary results of the RF2.0 project related to the ongoing electrical grid analysis activities on LHC. Particular attention is given to the investigation of electrical perturbations and network events that can lead to accelerator downtime and impact overall machine availability. The analysis aims to improve the understanding of the interaction...
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Dr Davide Aguglia (CERN)09/06/2026, 09:14(2) Oral presentation
Power quality events can have a direct impact on the availability of the Future Circular Collider by causing undesired trips of sensitive equipment. At the same time, maintaining a high level of power quality is essential to ensure stable and reliable operation of the machine and its technical infrastructure.
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This presentation discusses how machine availability could be improved through the... -
Corentin Pierre Boennec (Laplace)09/06/2026, 09:36(2) Oral presentation
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Hannes Gamper (CERN)09/06/2026, 10:30(2) Oral presentation
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Francesco Baroni (Universita degli Studi di Trento and INFN (IT))09/06/2026, 10:52(2) Oral presentation
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Benjamin Weyer (CERN)09/06/2026, 11:14(2) Oral presentation
Building the FCC tunnel, installing and aligning each component of the machine and the experiments at the designed location will be a challenging task relying notably on the accuracy and reliability of the geodetic infrastructure.
Over the past year, in collaboration with ETHZ, HEIG-VD, IGN and Swisstopo, progress has been made developing the new geodetic infrastructure for the FCC. Efforts...
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Damien Lafarge (CERN)09/06/2026, 11:36(2) Oral presentation
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197. Update on the integration studies for FCC-ee underground - Experimental Points (PA, PD, PG, PJ)Mr Dan Harvey (CERN)09/06/2026, 13:30(2) Oral presentation
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Fani Valchkova-Georgieva (Bulgarian Academy of Sciences (BG))09/06/2026, 13:48(2) Oral presentation
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Barbara Humann (CERN)09/06/2026, 14:06(2) Oral presentation
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Louise Olivia Jorat (CERN)09/06/2026, 14:24(2) Oral presentation
This presentation describes the process of integrating the beamstrahlung dump infrastructure in the FCC tunnel. The liquid lead dump solution considered at the moment consists of a free surface lead flow supported by a stainless steel container, a piping system linking the dump to an expansion vessel, a heat exchanger, a storage tank and electromagnetic pumps to circulate the liquid...
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Ms Audrey Piccini (CERN)09/06/2026, 14:42(2) Oral presentation
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Laurent Delprat (CERN)10/06/2026, 08:301(2) Oral presentation
The design maturity of the Future Circular Collider (FCC-ee) cryogenic system has progressed significantly from its initial concept in 2014 reaching its feasibility report in 2025. With 3 major reports published in between, being the Conceptual Design Report (CDR) in 2018, the Mid-Term Review Report (MTR) in 2023 and the Feasibility Study Report (FSR) in 2025, the FCC Study is now entering its...
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Anita Petrovic10/06/2026, 09:00(2) Oral presentation
The current baseline foresees cryogenic cooling at Points H and L for the RF collider and booster systems. Included in the presentation are the latest updates to the cryogenic architecture, heat-load estimates, installed cooling capacity, utility assumptions, and other ongoing parallel studies supporting the cryogenic system design. Together, these activities aim to strengthen the FCC-ee...
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Thomas Luc Swerts (CERN)10/06/2026, 09:30(2) Oral presentation
Building on the evolving FCC-ee cryogenic baseline and the objectives of the Reference Design Report (RDR) phase, this contribution presents the status of the ongoing industrial engineering studies conducted in collaboration with selected partners.
These studies aim to consolidate CERNโs FCC-ee helium cryogenic refrigeration design through strong industry feedback and engagement, support...
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Andrew Coleman (CERN)10/06/2026, 10:30(2) Oral presentation
This presentation will focus on the ventilation design decisions taken since the Feasibility Study: specifically, on how the accelerator tunnel is ventilated, both in normal operation and in an emergency, and how the air of the accelerator tunnel is kept within the required temperature range. The results of the Pugh Matrix assessments for the decisions, highlighting safety and environmental...
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Daniel Najdrowski (CERN)10/06/2026, 11:00(2) Oral presentation
This contribution presents the ongoing development of the FCC cooling infrastructure architecture within the FCC Reference Design activities.
The presentation will provide an update on the evolution of user cooling requirements and thermal loads, including the recent transition from GHC to LCC beam optics and the expected future evolution of loads currently under development within the FCC...
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Inigo Martin Melero (CERN)10/06/2026, 11:30(2) Oral presentation
In the present contribution, an update on the cooling towers and water services management for FCC is thoroughly discussed. Cooling towers conform the main heat rejection mechanism from FCC to the environment. The raw water network supplies make-up to compensate for evaporation losses in the cooling towers, among others. To reduce the make-up water consumption, recycling of the cooling tower...
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Andre Henriques (CERN)11/06/2026, 08:30(2) Oral presentation
A first version of the Safety Concept for the Future Circular Collider (FCC) was presented in the Feasibility Study report. It underwent peer review by both internal and external expert committees, which confirmed the absence of showstoppers at this stage while identifying a comprehensive set of aspects requiring further development.
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The current objective is to build on the foundation set a... -
Ada Malagnino (CERN)11/06/2026, 08:48(2) Oral presentation
The Future Circular Collider (FCC) proposes an unprecedented evacuation concept for long underground tunnels, relying on autonomous vehicles to support emergency egress over distances of several kilometres. In the event of a fire, smoke will be contained through a combination of static and dynamic confinement through fire compartments and an air-management system operating in emergency...
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Jannes Hopman11/06/2026, 09:06(2) Oral presentation
Fire safety and cryogenic hazards are critical considerations in the design of the Future Circular Collider (FCC), where its underground nature and high-energy systems introduce multiple risks to personnel. This work presents a combined numerical investigation of fire scenarios and accidental helium releases, addressing two key hazards in the FCC design. The simulations support validation of...
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Davide Bozzato (CERN)11/06/2026, 09:24Technical Infrastructures(2) Oral presentation
Radiation Protection (RP) studies are essential to ensure that the advancing design of FCC-ee systems and infrastructures during the Reference Design phase meets the radiological safety objectives for personnel and for the environment. Radiation transport simulations with the FLUKA Monte Carlo code are carried out to support design optimisation and to anticipate potentially critical radiation...
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Scott Williams11/06/2026, 09:42(2) Oral presentation
This presentation focuses on the principles of access control and access safety systemโs design for the FCC-ee. Main hazards that the access safety system protects from, and the methodology for reaching the reference design are presented. Possible Elements Important for Safety (EIS), capable of stopping the beams in the FCC are discussed. Principles of sectorising the FCC complex for access...
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Thomas Luc Swerts (CERN)(2) Oral presentation
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