Parts | Days | Selection | Search | Updates | Downloads | Help
GR: Fachverband Gravitation und Relativitätstheorie
GR 14: Gravitational Waves II
GR 14.5: Talk
Thursday, March 23, 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.