학술논문
ETpathfinder: a cryogenic testbed for interferometric gravitational-wave detectors
Document Type
Working Paper
Author
Utina, A.; Amato, A.; Arends, J.; Arina, C.; de Baar, M.; Baars, M.; Baer, P.; van Bakel, N.; Beaumont, W.; Bertolini, A.; van Beuzekom, M.; Biersteker, S.; Binetti, A.; ter Brake, H. J. M.; Bruno, G.; Bryant, J.; Bulten, H. J.; Busch, L.; Cebeci, P.; Collette, C.; Cooper, S.; Cornelissen, R.; Cuijpers, P.; van Dael, M.; Danilishin, S.; Dixit, D.; van Doesburg, S.; Doets, M.; Elsinga, R.; Erends, V.; van Erps, J.; Freise, A.; Frenaij, H.; Garcia, R.; Giesberts, M.; Grohmann, S.; Van Haevermaet, H.; Heijnen, S.; van Heijningen, J. V.; Hennes, E.; Hennig, J. -S.; Hennig, M.; Hertog, T.; Hild, S.; Hoffmann, H. -D.; Hoft, G.; Hopman, M.; Hoyland, D.; Iandolo, G. A.; Ietswaard, C.; Jamshidi, R.; Jansweijer, P.; Jones, A.; Jones, P.; Knust, N.; Koekoek, G.; Koroveshi, X.; Kortekaas, T.; Koushik, A. N.; Kraan, M.; van de Kraats, M.; Kranzhoff, S. L.; Kuijer, P.; Kukkadapu, K. A.; Lam, K.; Letendre, N.; Li, P.; Limburg, R.; Linde, F.; Locquet, J. -P.; Loosen, P.; Lueck, H.; Martınez, M.; Masserot, A.; Meylahn, F.; Molenaar, M.; Mow-Lowry, C.; Mundet, J.; Munneke, B.; van Nieuwland, L.; Pacaud, E.; Pascucci, D.; Petit, S.; Van Ranst, Z.; Raskin, G.; Recaman, P. M.; van Remortel, N.; Rolland, L.; de Roo, L.; Roose, E.; Rosier, J. C.; Ryckbosch, D.; Schouteden, K.; Sevrin, A.; Sider, A.; Singha, A.; Spagnuolo, V.; Stahl, A.; Steinlechner, J.; Steinlechner, S.; Swinkels, B.; Szilasi, N.; Tacca, M.; Thienpont, H.; Vecchio, A.; Verkooijen, H.; Vermeer, C. H.; Vervaeke, M.; Visser, G.; Walet, R.; Werneke, P.; Westhofen, C.; Willke, B.; Xhahi, A.; Zhang, T.
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Abstract
The third-generation of gravitational wave observatories, such as the Einstein Telescope (ET) and Cosmic Explorer (CE), aim for an improvement in sensitivity of at least a factor of ten over a wide frequency range compared to the current advanced detectors. In order to inform the design of the third-generation detectors and to develop and qualify their subsystems, dedicated test facilities are required. ETpathfinder prototype uses full interferometer configurations and aims to provide a high sensitivity facility in a similar environment as ET. Along with the interferometry at 1550 nm and silicon test masses, ETpathfinder will focus on cryogenic technologies, lasers and optics at 2090 nm and advanced quantum-noise reduction schemes. This paper analyses the underpinning noise contributions and combines them into full noise budgets of the two initially targeted configurations: 1) operating with 1550 nm laser light and at a temperature of 18 K and 2) operating at 2090 nm wavelength and a temperature of 123 K.