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ENTM: An arc half-cell mock-up for the FCC-ee
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Europe/Zurich
40/S2-A01 - Salle Anderson (CERN)
Description
Abstract
77 out of 90 km of the proposed FCC-ee accelerator consist of arcs. Each arc is made of a series of repeatable half-cells: in total, at the high-energy phase of FCC-ee, 3000 half-cells will be installed. For this reason, in 2022, the FCC Feasibility Study management tasked the EN-MME group with designing, constructing, and installing a simplified 1:1 scale mock-up (30 meters in length and 5.5 meters in diameter). This initiative, part of the FCC Feasibility Study, aims for installation by mid-2025. The initial version of the mock-up, to be installed at the Meyrin site (building 355), will include a combination of functional systems (e.g., jacks, supports, girders, robots) and dummy components (e.g., wooden magnets and vacuum chambers). Notably, the structural envelope has been designed to support the weight of the real systems, enabling the progressive replacement of dummy components with actual prototypes as they become available from the equipment groups. Although the fully "upgraded" mock-up, featuring 100% real systems, will only be available in the years leading up to the FCC Technical Design Report (TDR), the current version will already facilitate critical testing. These tests include integration, safety procedures, handling processes, mechanical stability, and vibration studies of the short straight sections. The mock-up design is complete, and most orders for the primary systems have been placed. Installation is targeted to begin in Q2 of this year. This project strongly relies on the successful collaboration between multiple groups within the department (MME, ACE, HE, CV, EL) and with colleagues from other departments, including the equipment groups, HSE, SCE, and others.
This presentation will highlight the key figures of the mock-up and outline the next steps.
