A thermal compensation system for the gravitational wave detector virgo

T. Accadia, F. Acernese, F. Antonucci, K. G. Arun, P. Astone, G. Ballardin, F. Barone, M. Barsuglia, Th S. Bauer, M. G. Beker, A. Belletoile, S. Bigotta, S. Birindelli, M. Bitossi, M. A. Bizouard, M. Blom, C. Boccara, F. Bondu, L. Bonelli, R. BonnandV. Boschi, L. Bosi, B. Bouhou, S. Braccini, C. Bradaschia, A. Brillet, V. Brisson, R. Budzyński, T. Bulik, H. J. Bulten, D. Buskulic, C. Buy, G. Cagnoli, E. Calloni, E. Campagna, B. Canuel, F. Carbognani, F. Cavalier, R. Cavalieri, G. Cella, E. Cesarini, E. Chassande-Mottin, A. Chincarini, F. Cleva, E. Coccia, C. N. Colacino, J. Colas, A. Colla, M. Colombini, A. Corsi, J. P. Coulon, E. Cuoco, S. D'Antonio, V. Dattilo, M. Davier, R. Day, R. De Rosa, M. Del Prete, L. Di Fiore, A. Di Lieto, M. Di Paolo Emilio, A. Di Virgilio, A. Dietz, M. Drago, V. Fafone, I. Ferrante, F. Fidecaro, I. Fiori, R. Flaminio, J. D. Fournier, J. Franc, S. Frasca, F. Frasconi, A. Freise, M. Galimberti, L. Gammaitoni, F. Garufi, G. Gemme, E. Genin, A. Gennai, A. Giazotto, R. Gouaty, M. Granata, C. Greverie, G. M. Guidi, J. F. Hayau, H. Heitmann, P. Hello, S. Hild, D. Huet, P. Jaranowski, I. Kowalska, A. Krolak, N. Leroy, N. Letendre, T. G.F. Li, M. Lorenzini, V. Loriette, G. Losurdo, E. Majorana, I. Maksimovic, N. Man, M. Mantovani, F. Marchesoni, F. Marion, J. Marque, F. Martelli, A. Masserot, C. Michel, L. Milano, Y. Minenkov, M. Mohan, J. Moreau, N. Morgado, A. Morgia, S. Mosca, V. Moscatelli, B. Mours, I. Neri, F. Nocera, G. Pagliaroli, L. Palladino, C. Palomba, F. Paoletti, S. Pardi, M. Parisi, A. Pasqualetti, R. Passaquieti, D. Passuello, G. Persichetti, M. Pichot, F. Piergiovanni, M. Pietka, L. Pinard, R. Poggiani, M. Prato, G. A. Prodi, M. Punturo, P. Puppo, D. S. Rabeling, P. Rapagnani, V. Re, T. Regimbau, F. Ricci, F. Robinet, A. Rocchi, L. Rolland, R. Romano, D. Rosinska, P. Ruggi, B. Sassolas, D. Sentenac, L. Sperandio, R. Sturani, B. Swinkels, A. Toncelli, M. Tonelli, O. Torre, E. Tournefier, F. Travasso, G. Vajente, J. F.J. Van Den Brand, S. Van Der Putten, M. Vavoulidis, G. Vedovato, D. Verkindt, F. Vetrano, A. Vicere, J. Y. Vinet, H. Vocca, M. Was, M. Yvert

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Thermal lensing due to the absorption of the laser beam in core optics of gravitational wave interferometers can represent a strong limitation to their operation and sensitivity. This effect has already been observed in the present detectors and will become more relevant in the future upgraded interferometers, due to the much higher circulating power. A thermal compensation system, based on a CO2 laser projector, has been installed in Virgo, allowing to increase the interferometer input power from 7 to 17 W. The thermal compensation system can introduce displacement noise by means of several mechanisms. This noise depends on the CO2 laser intensity fluctuations and on the power needed to compensate thermal effects. To make the displacement noise compliant with Virgo specifications, a feedback system to reduce the CO 2 laser intensity fluctuations has been implemented.

Original languageEnglish
Title of host publication12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity
PublisherWorld Scientific Publishing Co. Pte. Ltd.
Pages1652-1656
Number of pages5
ISBN (Print)9814374512, 9789814374514
DOIs
StatePublished - 2012
Event12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009 - Paris, France
Duration: Jul 12 2009Jul 18 2009

Publication series

Name12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity

Conference

Conference12th Marcel Grossmann Meeting on Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, MG 2009
CountryFrance
CityParis
Period07/12/0907/18/09

Keywords

  • Gravitational waves
  • Interferometric detectors
  • Thermal lensing

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    Accadia, T., Acernese, F., Antonucci, F., Arun, K. G., Astone, P., Ballardin, G., Barone, F., Barsuglia, M., Bauer, T. S., Beker, M. G., Belletoile, A., Bigotta, S., Birindelli, S., Bitossi, M., Bizouard, M. A., Blom, M., Boccara, C., Bondu, F., Bonelli, L., ... Yvert, M. (2012). A thermal compensation system for the gravitational wave detector virgo. In 12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity (pp. 1652-1656). (12th Marcel Grossmann Meeting on Recent Dev. in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories - Proc. of the MG 2009 Meeting on General Relativity). World Scientific Publishing Co. Pte. Ltd.. https://doi.org/10.1142/9789814374552_0295