The Einstein Telescope Pathfinder and its Vacuum System

Höhn T, Thümmler T, Wolf J, Engel R, Adams M, Akhil K, Amato A, Baars M, Baer P, Beaumont W, Bellani C, Bertolini A, Biersteker S, Binetti A, den Bossche EV, Bruno G, Bulik T, Bulten HJ, Chalyan T, Cornelissen R, Cuijpers P, Danilishin S, Diksha D, Doerga D, Duvieusart E, Elsinga R, Engel R, Freise A, Frenaij H, Funk S, Garcia R, Goodwin-Jones A, Guo Y, Van Haevermaet H, Happe F, Haungs A, Heijnen S, van Heijningen J, Hild S, Hoft G, Höhn T, Hsu WF, Iandolo GA, Jaspers M, Joppe R, Knust N, Kollmer D, Kortekaas T, Koushik AN, Kraan M, van de Kraats M, Kranzhoff SL, Kuijer P, Lam K, Lammers S, Letendre N, Li P, van Limbeek M, Linde F, Locquet JP, Mariotti A, Martínez-Perez M, Massaro L, Masserot A, Meylahn F, Morgenweck H, Mow-Lowry C, Mundet J, Munneke B, van Nieuwland L, Oomen T, Öz E, Pacaud E, Pascucci D, Petit S, Porcelli E, Van Ranst Z, van Remortel N, Rolland L, Romero-Rodríguez A, Rosseel D, Schouteden K, Schoon T, Schmeitz R, Schwab B, Schwenck A, Seo M, Sevrin A, Silenzi L, Stahl A, Steinlechner J, Steinlechner S, Suchenek M, Swinkels B, Tacca M, Thienpont H, Thümmler T, Vardaro M, Vermeer CH, Vermeulen N, Vervaeke M, Vink W, Visser G, Witvoet G, Willke B, Wöhler J, Wolf J, Zink A (2025)

Publication Type: Conference contribution

Publication year: 2025

Journal

Publisher: Sissa Medialab Srl

Book Volume: 501

Conference Proceedings Title: Proceedings of Science

Event location: Geneva, CHE

DOI: 10.22323/1.501.0932

Abstract

The Einstein Telescope (ET) will be the next generation gravitational wave observatory in Europe with a sensitivity reaching beyond the CMB into the dark era of the Universe. Each corner of the triangular baseline design is the center of two interferometers with 10 km long arms, one operated at room temperature, the other one with mirrors at cryogenic temperatures of 10 – 15 K that reduce the noise contribution at frequencies as low as 3 Hz. The ETpathfinder (ET-PF) project at Maastricht University is a R&D facility for the challenging cryogenic interferometer technology of ET. It is a 20 m x 20 m interferometer with six towers that will house the seismically decoupled cryogenic Si-mirrors, laser systems, and detectors. The KIT group developed the control system of the ultra-high vacuum system for ET-PF, based on the expertise from the KATRIN neutrino mass experiment. In addition, a test facility is currently being set up at KIT to investigate adsorption and desorption processes of residual gas on the cryogenic mirror surfaces, as well as monitoring techniques and in-situ cleaning procedures. This paper presents the objectives and status of these activities and their contribution towards the next generation gravitational wave observatory.

Authors with CRIS profile

Involved external institutions

Maastricht University Netherlands (NL) FOM Foundation Netherlands (NL) Karlsruhe Institute of Technology (KIT) Germany (DE) Katholieke Universiteit Leuven (KUL) / Catholic University of Leuven Belgium (BE) Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen Germany (DE) Max Planck Institute for Gravitational Physics / Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut) Germany (DE) Vrije Universiteit Amsterdam (VU) / University Amsterdam Netherlands (NL) University of Antwerp / Universiteit Antwerpen Belgium (BE) Laboratoire d'Annecy-le-Vieux de Physique des Particules LAPP France (FR) University of Twente Netherlands (NL) Institució Catalana de Recerca i Estudis Avançats (ICREA) / Catalan Institution for Research and Advanced Studies Spain (ES) Eindhoven University of Technology / Technische Universiteit Eindhoven (TU/e) Netherlands (NL) Universiteit Gent (UGent) / Ghent University Belgium (BE) Fraunhofer-Institut für Lasertechnik (ILT) Germany (DE) Vrije Universiteit Brussel (VUB) Belgium (BE) Université Catholique de Louvain (UCL) Belgium (BE) University of Warsaw / Uniwersytet Warszawski Poland (PL)

How to cite

APA:

Höhn, T., Thümmler, T., Wolf, J., Engel, R., Adams, M., Akhil, K.,... Zink, A. (2025). The Einstein Telescope Pathfinder and its Vacuum System. In Proceedings of Science. Geneva, CHE: Sissa Medialab Srl.

MLA:

Höhn, Thomas, et al. "The Einstein Telescope Pathfinder and its Vacuum System." Proceedings of the 39th International Cosmic Ray Conference, ICRC 2025, Geneva, CHE Sissa Medialab Srl, 2025.

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