Conveners
Technical Infrastructure: Electricity & Energy Management
- Nicolas Bellegarde (CERN)
Technical Infrastructure: RF Points and Cryogenics
- Frank Gerigk (CERN)
Technical Infrastructure: Integration and Radiation
- Sonia Bartolome Jimenez (CERN)
Technical Infrastructure: Safety
- Benoit Delille (CERN)
Technical Infrastructure: Cooling & Ventilation, Geodesy
- Ingo Ruehl (CERN)
Technical Infrastructure: Transport and Logistics
- Benedikt Oliver Mรผller
The development of the power transmission and distribution network for the Future Circular Collider (FCC) involves the integration of advanced technologies aimed at improving efficiency, reliability, and resilience. Smart systems for real-time control of power flows and voltage regulation enable optimized energy management, reduce losses and ensure grid stability under varying conditions,...
The contribution proposes an integration study of a hydrogen infrastructure distributed in the 8 connection points of the FCC. It considers the main constraints linked to the sizing of the system as well as the use of renewable electrical production placed locally and remotely to ensure partial energetic autonomy. It includes technical and economic indicators such as the actualized total...
This presentation provides an updated overview of the FCC electrical grid and infrastructure as established for the Feasibility Study Report, with a particular focus on developments since the FCC Week 2024.
The feasibility study of the HV line running through the tunnel has been completed, delivering key outcomes, notably regarding integration requirements. Electrical equipment needs have...
Cryogenics, electrical network and cooling & ventilation faults accounted for nearly 30% of LHC down time in 2015-2025. Extrapolation to equivalent systems in the FCC-ee suggests a similarly high contribution, posing a substantial challenge to achieving the ambitious availability targets for this large and complex machine. This presentation illustrates key statistics from infrastructure faults...
This presentation outlines the ongoing developments in the RF straight sections located around points H and L, with a particular focus on the new designs of the 400 MHz and 800 MHz cryomodules, including the rationale for their specified dimensions. Integration studies are being carried out with careful consideration of spatial constraints, all within the 5.5 meters internal diameter of the...
This presentation addresses the electrical powering of RF tubes, specifically tristrons and solid-state amplifiers, for both the FCC-ee collider and booster. The baseline solution currently under consideration is a centralized system delivering 130โฏMW through a high-power converter. We present the architecture and characteristics of the proposed converters and share insights gained from a...
With a focus on the work published in the feasibility study report, this presentation will explore the cryogenic system design and changes made since the feasibility study mid-term review for the FCC-ee machine. Included in this talk will be the status of the heat loads, cryogenic cooling capacities, electrical power consumption, and helium inventory.
The presentation will also address the...
The cryogenic system design of FCC-hh has matured during the Feasibility Study with the evolution of the magnets operation parameters, from a Nb3Sn @ 16 T version, updated from the CDR, towards a 14 T version of the same magnet technology in the so-called โF14 scenarioโ, while even envisaging a 4.5 K option.
This presentation will focus on the FCC-hh machine, emphasizing on the latest...
This presentation summarizes the results of the 3D integration studies carried out in the frame of the FCC feasibility study. The 3D integration have been carried out with careful consideration of spatial constraints with respect to the updated requirements provided by the different stakeholders, such as civil engineering, cooling circuits, HVAC systems, electrical supply, transport, safety...
The FCC-ee arc half-cell mock-up project is about to enter the installation phase, as the first elements of the mock-up structure have been received and most of the components to be installed have been ordered. The mock-up is designed to be modular, enabling it to accommodate systems from other teams: robots, magnets, vacuum systems, etc. Extensive collaboration with other teams has taken...
The intense radiation environment in the FCC-ee tunnel, primarily driven by Synchrotron Radiation (SR) from high-energy electrons and positrons, presents significant challenges for accelerator components and nearby equipment. To mitigate these effects, localized photon stoppers and dedicated shielding have been implemented, reducing annual ionising dose levels in the tunnel to below 10 kGy....
In view of the FCC feasibility study, the Safety WP was tasked with the editorial of a full Safety Concept, which was recently published in Volume 2 of the Feasibility Study report. The outcome of the safety concept leans on the results from several safety studies and the implementation of safety-relevant systems which are designed and proposed by other WPs in the Technical Infrastructure...
Radiation protection studies ensure that the proposed FCC-ee design meets radiological safety objectives for personnel and the environment. FLUKA Monte Carlo simulations help to analyse critical radiation protection aspects, here focusing on three topics for the pre-TDR phase that may significantly impact system integration and civil engineering.
The first aspect concerns the activation of...
The external Safety Concept review conducted by the HSE Executive UK concluded that the current fire safety concept presents no major showstoppers. However, several areas require further development to ensure comprehensive risk mitigation. Key aspects identified include the need for complete hazard inventories, in-depth analysis of degraded modes, and assessment of fire and ventilation...
The SRF cryomodules of the FCC-ee rely on liquid helium to reach their superconducting state. The 400 MHz cavity cryomodule will be cooled using 115 kg of helium at 4.5 K (He-I), whereas the 800 MHz cryomodule will use 55 kg of super๏ฌuid helium (He-II) at 2 K. Following a risk assessment, a few accident scenarios were identi๏ฌed as potential sources of helium release in the FCC tunnel. Such a...
Ensuring a credible, feasible and sustainable safety response for the FCC requires planning for complex emergency situations. This presentation outlines a layered response concept involving self-sufficient workers, robotic support, AI-assisted monitoring, and human emergency responders. It reflects ongoing collaboration between the Safety WP, CFRS and robotics experts. The focus will be on...
The ventilation system for the FCC is designed to supply, condition, and extract air throughout the entire accelerator complex. This includes the Technical Areas, Experimental Areas, RF Areas, the Tunnel, and surface buildings. The supplied air must comply with safety, humidity, and temperature standards. This presentation will provide an overview of this system, with a focus on the updated...
The water-cooling systems of the FCC are designed to remove the heat generated by critical components such as magnets, cryogenic systems, absorbers, and electronics. This presentation will provide an overview of the current design status of these systems, highlighting updates on the thermal loads managed by the cooling systems, comparisons of various cooling tower technologies, strategies for...
A novel COโ-based architecture to recover, transport, and utilise surplus thermal energy across eight distributed sites is proposed as The Waste Heat Supply System (WHSS) for the Future Circular Collider (FCC).
The WHSS applies COโ in pressurised pipelines to transfer heat to decentralised heat pump - chiller units, where heat is delivered to end users and the COโ is liquefied.
Key...
Constructing 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....
Following the release of the Feasibility Study, this presentation will provide an overview of the concepts related to the transport of personnel and materials, as well as the roadmap for the objectives of the Pre-TdR phase.
Personnel transport includes vertical access through shafts and horizontal access to the workplace via personnel transport vehicles.
Material transport primarily...
This presentation provides an overview of the Robotics Work Package launched in 2022, with key deliverables completed between 2023 and 2025. The results have been consolidated in the Feasibility Study Report, which serves as the foundation for the subsequent Robotic Automation for Maintenance and Safety Platform (RAMP) Work Package. RAMP outlines the critical tasks to be undertaken from 2025...
The Future Circular Collider (FCC) demands an unprecedented scale of magnet production, with nearly 25,000 components for both the collider and booster requiring tightly coordinated manufacturing and installation. This presentation outlines the production and logistics strategy.
As part of the FCC feasibility study, the installation schedule for the FCC-ee has been aligned with the updated Civil Engineering strategy for the tunnel construction. Fine tuning between the two schedules was carried out to optimize the overall installation duration, allowing machine installation activities to safely begin while the final phases of Civil Engineering works are still being...
