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T: Fachverband Teilchenphysik

T 38: Methods in Astroparticle Physics II

T 38.3: Talk

Tuesday, March 17, 2026, 16:45–17:00, KS 00.004

Innovative Production Approach to Vacuum Beam Pipes of the Einstein Telescope — •Charlotte Benning, Robert Joppe, Oliver Pooth, and Achim Stahl — RWTH Aachen University, Physics Institute 3B

The Einstein Telescope (ET), Europe's next-generation gravitational-wave detector, requires 120 km of underground vacuum tubes with a diameter of 1 m to achieve the design sensitivity. The current design foresees the production of the beam pipes in sections of 15 m, which results in high efforts for transportation, welding, and cleaning. BeamPipes4ET proposes an innovative production approach in which the vacuum pipes are manufactured directly on-site inside the tunnels through a continuous forming process using sheet-metal coils. It offers potential reductions in time, cost, installation effort, and environmental impact. In this talk, the current project status, key technological developments, and a comparison between the current ET design and the BeamPipes4ET approach are discussed.

Keywords: Vacuum; Beam Pipes; Einstein Telescope; Gravitational Waves