SMuK 2023 – wissenschaftliches Programm

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GR: Fachverband Gravitation und Relativitätstheorie

GR 14: Gravitational Waves II

GR 14.5: Vortrag

Donnerstag, 23. März 2023, 17:20–17:40, ZEU/0255

Development and Testing of Composite Vacuum Tubes for the Einstein Telescope — •Purnalingam Revathi¹, Ralf Schleichert², Tim Kuhlbusch¹, Robert Joppe¹, Thomas Hebbeker¹, Oliver Pooth¹, and Achim Stahl¹ — ¹III. Physikalisches Institut B, RWTH Aachen — ²Institut für Kernphysik, Forschungszentrum Jülich

The Einstein Telescope, a proposed third-generation gravitational wave detector, requires about a 120 km long set of vacuum tubes with diameters of up to 1 m. Due to the vacuum requirements and mechanical integrity, stainless steel tubes are the standard for ultra high vacuum applications. But even with higher material costs, composite tubes may be a promising alternative to reduce the overall costs and to open possibilities for an on site production. This talk presents the details of the development and testing of prototypes made of Glass Fiber Reinforced Plastic wound around a stainless steel liner. Vacuum pressure stability and overpressure tests have been performed. Finite element simulations were done to optimize the material choice and thicknesses. The possibility of integrating sensors to measure temperature and pressure will be discussed.