Heidelberg 2022 – scientific programme
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GR: Fachverband Gravitation und Relativitätstheorie
GR 14: Gravitational Wave Detectors
GR 14.3: Talk
Thursday, March 24, 2022, 16:55–17:15, GR-H2
Development and testing of composite vacuum tubes for Einstein Telescope — •Purnalingam Revathi1, Ralf Schleichert2, Achim Stahl1, Tim Kuhlbusch1, Robert Joppe1, and Oliver Pooth1 — 1III. Physikalisches Institut B, RWTH Aachen — 2Institut für Kernphysik, Forschungszentrum Jülich
The Einstein Telescope, a proposed third generation gravitational wave detector, requires 120 km long vacuum tubes in total with a diameter of 1 m. Due to the vacuum requirements and mechanical integrity, stainless steel tubes are the standard for ultra high vacuum applications. Composite vacuum tubes are a promising alternative that could reduce material cost and opens possibilities for easier on site production.This talk presents the details of development and testing of prototypes made of Glass Fiber Reinforced Plastic wound around a stainless steel liner. Pressure stability and aging tests are performed and the possibility of integrating sensors to measure temperature and pressure will be discussed.