Status of ETpathfinder

Van Haevermaet H, Adams M, 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, Van Dael M, Danilishin S, Diksha D, Doerga D, Duvieusart GE, 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 JV, 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, Kuhlbusch T, Kukkadapu KA, 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, Spagnuolo V, 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, Willke B, Wöhler J, Wolf J, Zink A (2026)

Publication Type: Conference contribution

Publication year: 2026

Journal

Publisher: Institute of Physics

Book Volume: 3177

Conference Proceedings Title: Journal of Physics: Conference Series

Event location: Glasgow, GBR

DOI: 10.1088/1742-6596/3177/1/012095

Abstract

Third-generation gravitational wave observatories, such as the Einstein Telescope (ET) and Cosmic Explorer, aim for sensitivity improvements of at least a factor of ten over a wide frequency range compared to the current operational detectors. To finalise the design of these third generation detectors and to further develop and qualify their subsystems, dedicated test facilities are required. The ETpathfinder prototype consists of full interferometer configurations and aims to provide a high sensitivity test facility in a similar environment as ET. The key technologies that will be implemented are lasers and optics at 1550 nm and 2090 nm, silicon test masses, cryogenic cooling techniques, and advanced quantum-noise reduction schemes. In these proceedings we will present a general status update of the ETpathfinder experiment.

Authors with CRIS profile

Involved external institutions

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

How to cite

APA:

Van Haevermaet, H., Adams, M., Amato, A., Baars, M., Baer, P., Beaumont, W.,... Zink, A. (2026). Status of ETpathfinder. In Christopher P L Berry, Jonathan Gair, Ik Siong Heng, Jessica Steinlechner (Eds.), Journal of Physics: Conference Series. Glasgow, GBR: Institute of Physics.

MLA:

Van Haevermaet, Hans, et al. "Status of ETpathfinder." Proceedings of the 24th International Conference on General Relativity and Gravitation, GR 2025 and the 16th Edoardo Amaldi Conference on Gravitational Waves, Amaldi 2025, Glasgow, GBR Ed. Christopher P L Berry, Jonathan Gair, Ik Siong Heng, Jessica Steinlechner, Institute of Physics, 2026.

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