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1. Thermal noise-limited beam balance as prototype of the Archimedes vacuum weight experiment and B-L dark photon search

Author

Allocca, Annalisa, Avino, Saverio, Calloni, Enrico, Caprara, Sergio, Carpinelli, Massimo, Contu, Andrea, D’Onofrio, Luca, D’Urso, Domenico, De Rosa, Rosario, Errico, L., Esposito, Marina, Gagliardi, Gianluca, Grilli, Marco, Mangano, Valentina, Marsella, Maria, Naticchioni, Luca, Pasqualetti, Antonio, Pepe, Gianpiero, Perciballi, Maurizio, Puppo, Paola, Rapagnani, Piero, Ricci, Fulvio, Rosa, Luigi, Rovelli, Carlo, Rozza, Davide, Ruggi, Paolo, Saini, Naurang L., Sequino, Valeria, Sipala, Valeria, Stornaiuolo, Daniela, Tafuri, Francesco, and Trozzo, Lucia

Published
2024
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2. Casimir energy for N superconducting cavities: a model for the YBCO (GdBCO) sample to be used in the Archimedes experiment

Author

Allocca, Annalisa, Avino, Saverio, Balestrieri, Sergio, Calloni, Enrico, Caprara, Sergio, Carpinelli, Massimo, D’Onofrio, Luca, D’Urso, Domenico, De Rosa, Rosario, Errico, Luciano, Gagliardi, Gianluca, Grilli, Marco, Mangano, Valentina, Marsella, Maria, Naticchioni, Luca, Pasqualetti, Antonio, Pepe, Giovanni Piero, Perciballi, Maurizio, Pesenti, Luca, Puppo, Paola, Rapagnani, Piero, Ricci, Fulvio, Rosa, Luigi, Rovelli, Carlo, Rozza, Davide, Ruggi, Paolo, Saini, Naurang, Sequino, Valeria, Sipala, Valeria, Stornaiuolo, Daniela, Tafuri, Francesco, Tagliacozzo, Arturo, Tosta e Melo, Iara, and Trozzo, Lucia

Published
2022
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4. Science with the Einstein Telescope: a comparison of different designs

Author

Branchesi, Marica, Maggiore, Michele, Alonso, David, Badger, Charles, Banerjee, Biswajit, Beirnaert, Freija, Belgacem, Enis, Bhagwat, Swetha, Boileau, Guillaume, Borhanian, Ssohrab, Brown, Daniel David, Chan, Man Leong, Cusin, Giulia, Danilishin, Stefan L., Degallaix, Jerome, De Luca, Valerio, Dhani, Arnab, Dietrich, Tim, Dupletsa, Ulyana, Foffa, Stefano, Franciolini, Gabriele, Freise, Andreas, Gemme, Gianluca, Goncharov, Boris, Ghosh, Archisman, Gulminelli, Francesca, Gupta, Ish, Gupta, Pawan Kumar, Harms, Jan, Hazra, Nandini, Hild, Stefan, Hinderer, Tanja, Heng, Ik Siong, Iacovelli, Francesco, Janquart, Justin, Janssens, Kamiel, Jenkins, Alexander C., Kalaghatgi, Chinmay, Koroveshi, Xhesika, Li, Tjonnie G. F., Li, Yufeng, Loffredo, Eleonora, Maggio, Elisa, Mancarella, Michele, Mapelli, Michela, Martinovic, Katarina, Maselli, Andrea, Meyers, Patrick, Miller, Andrew L., Mondal, Chiranjib, Muttoni, Niccolò, Narola, Harsh, Oertel, Micaela, Oganesyan, Gor, Pacilio, Costantino, Palomba, Cristiano, Pani, Paolo, Pasqualetti, Antonio, Perego, Albino, Pèrigois, Carole, Pieroni, Mauro, Piccinni, Ornella Juliana, Puecher, Anna, Puppo, Paola, Ricciardone, Angelo, Riotto, Antonio, Ronchini, Samuele, Sakellariadou, Mairi, Samajdar, Anuradha, Santoliquido, Filippo, Sathyaprakash, B. S., Steinlechner, Jessica, Steinlechner, Sebastian, Utina, Andrei, Broeck, Chris Van Den, and Zhang, Teng

Subjects
High Energy Astrophysical Phenomena (astro-ph.HE), astro-ph.HE, Astrophysics and Astronomy, Cosmology and Nongalactic Astrophysics (astro-ph.CO), General Relativity and Cosmology, gr-qc, astro-ph.CO, FOS: Physical sciences, General Relativity and Quantum Cosmology (gr-qc), Astrophysics - High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Einstein Telescope (ET), the European project for a third-generation gravitational-wave detector, has a reference configuration based on a triangular shape consisting of three nested detectors with 10 km arms, where in each arm there is a `xylophone' configuration made of an interferometer tuned toward high frequencies, and an interferometer tuned toward low frequencies and working at cryogenic temperature. Here, we examine the scientific perspectives under possible variations of this reference design. We perform a detailed evaluation of the science case for a single triangular geometry observatory, and we compare it with the results obtained for a network of two L-shaped detectors (either parallel or misaligned) located in Europe, considering different choices of arm-length for both the triangle and the 2L geometries. We also study how the science output changes in the absence of the low-frequency instrument, both for the triangle and the 2L configurations. We examine a broad class of simple `metrics' that quantify the science output, related to compact binary coalescences, multi-messenger astronomy and stochastic backgrounds, and we then examine the impact of different detector designs on a more specific set of scientific objectives., 197 pages, 73 figures. v2: corrections in the part on the sensitivity to stochastic backgrounds. Accepted in JCAP

Published
2023

6. Optomechanical parametric instabilities simulation in Advanced Virgo

Author

Cohen, David, Allocca, Annalisa, Bogaert, Gilles, Puppo, Paola, Jacqmin, Thibaut, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare [Pisa] (INFN), Istituto Nazionale di Fisica Nucleare (INFN), Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Istituto Nazionale di Fisica Nucleare [Sezione di Roma 1] (INFN), Istituto Nazionale di Fisica Nucleare, Laboratoire Kastler Brossel (LKB (Jussieu)), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
Abstract

Increasing the laser power is essential to improve the sensitivity of interferometric gravitational wave detectors. However, optomechanical parametric instabilities can set a limit to that power. It is of major importance to understand and characterize the many parameters and effects that influence these instabilities. We perform simulations for the Advanced Virgo interferometer (O3 configuration). In particular we compute mechanical modes losses by combining both on-site measurements and finite element analysis. We also study the influence on optical modes and parametric gains of mirror finite size effects, and mirror deformations due to thermal absorption. We show that these effects play an important role if transverse optical modes of order higher than four are involved in the instability process.

Published
2021

8. Small scale Suspended Interferometer for Ponderomotive Squeezing (SIPS) as test bench of the EPR squeezer for Advanced Virgo

Author

Di Pace, Sibilla, Naticchioni, Luca, Majorana, Ettore, Giacoppo, Laura, Puppo, Paola, Ricci, Fulvio, Rapagnani, Piero, Perciballi, Maurizio, De Laurentis, Martina, Calloni, Enrico, Travasso, Flavio, Bawaj, Mateusz, Vocca, Helios, Piluso, Antonfranco, Sequino, Valeria, and Sorrentino, Fiodor

Subjects
gravitational wave detectors, Virgo, Quantum Physics, Small-scale interferometer
Abstract

We are developing a small-scale interferometer with monolithic suspension of test masses (SIPS), that will be sensitive to the quantum radiation pressure noise in the audio frequency band of gravitational wave detectors. In the same time, a table-top experiment for the frequency dependent squeezing generation, through the Einstein Podolsky Rosen (EPR) principle, is under construction. SIPS interferometer, being designed to achieve the quantum radiation pressure noise limit exploiting high finesse optical cavities, turns out to be a suitable test bench for the EPR technique, before a possible integration in Virgo for broadband quantum noise reduction. In this work, we describe the concept of the SIPS experiment, the most important noises affecting this setup, and we briefly present the current status and the plan for the integration with the EPR squeezing experiment.

Published
2020
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9. Picoradiant tiltmeter and direct ground tilt measurements at the Sos Enattos site.

Author

Allocca, Annalisa, Avino, Saverio, Calloni, Enrico, Caprara, Sergio, Carpinelli, Massimo, D'Urso, Domenico, De Laurentis, Martina, De Rosa, Rosario, Errico, L., Gagliardi, G., Grilli, Marco, Mangano, Valentina, Marsella, Maria, Naticchioni, Luca, Pasqualetti, Antonio, Pepe, Gianpiero, Perciballi, Maurizio, Pesenti, Luca, Puppo, Paola, and Rapagnani, Piero

Abstract

We report the tilt sensitivity reached by the ARCHIMEDES tiltmeter in the 2–20 Hz frequency region, where seismic noise is expected to give an important limitation to the sensitivity in the next future Gravitational Waves detection, particularly through Newtonian noise. The tilt noise level θ ~ (f) is about 10 - 12 rad / Hz in most of the band, reaching the minimum of θ ~ = 7 · 10 - 13 rad / Hz around 9 Hz. The tiltmeter is a beam balance with a 0.5 m suspended arm and interferometric optical readout, working in closed loop. The results have been obtained by a direct measurement of the ground tilt at the Sos Enattos site (Sardinia, Italy). This sensitivity is a requirement to use the tiltmeter as part of an effective Newtonian noise reduction system for present Gravitational Waves detectors, and also confirms that Sos Enattos is among the quietest sites in the world, suitable to host the third-generation Gravitational Waves detector Einstein Telescope. [ABSTRACT FROM AUTHOR]

Published
2021
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11. Measurement of the optical parameters of the Virgo interferometer

Author

Virgo Collaboration, Acernese, Fausto, Alshourbagy, Mohamed, Amico, Paolo, Aoudia, S., Antonucci, Federica, Astone, P., Avino, Saverio, Babusci, D., Ballardin, G., Barone, Fabrizio, Barsuglia, Matteo, Barsotti, Lisa, Beauville, Fabrice, Bigotta, Stefano, Birindelli, Simona, Bizouard, Marie-Anne, Boccara, Albert-Claude, Bondu, Francois, Bosi, Leone, Braccini, Stefano, Bradaschia, Carlo, Brillet, Alain, Brisson, Violette, Brocco, Laura, Buskulic, Damir, Calloni, Enrico, Campagna, Enrico, Cavalier, Fabien, Carbognani, Franco, Cavalieri, Roberto, Cella, Giancarlo, Cesarini, E., Chassande-Motin, Eric, Christensen, N., Clapson, Andre-Claude, Frederic, Cleva, Corda, Christian, Corsi, A., Cottone, Francesco, Coulon, Jean-Pierre, Cuoco, Elena, Dari, Anna, Datillo, Vicenzo, Davier, Michel, Del Prete, M., Rosa, Rosario, Di Fiore, Luciano, Di Virgilio, Angela, Dujardin, Benedicte, Eleuteri, A., Ferrante, Isidoro, Fidecaro, Francesco, Fiori, Irene, Flaminio, Raffaele, Fourier, Jean Daniel, Frasca, Sergio, Frasconi, Franco, Francois, Olivier, Gammaitoni, Luca, Garufi, F., Genin, E., Gennai, Alberto, Giazotto, Adalberto, Giordano, G., Giordano, Lara, Gouaty, Romain, Grosjean, Daniel, Guidi, Gianluca M., Hebri, Salem, Heitmann, Henrich, Hello, Patrice, Karkar, Sonia, Kreckelbergh, Stephane, La Penna, Paolo, Laval, Mikael, Leroy, Nicolas, Letendre, Nicolas, Lopez, B., Lorenzini, Matteo, Loriette, Vincent, Losurdo, Giovanni, Mackowski, Jean-Marie, Majorana, Ettore, Mantovani, Maddalena, Fabio Garufi, Marion, Frederique, Marque, Julien, Martelli, Filippo, Masserot, Alain, Mazzoni, Massimo, Menzinger, F., Moreau, J., Milano, Leopoldo, Moins, Christophe, Morgado, Nazario, Mours, Benoit, Nary-Man, Catherine, Nocera, Flavio, Pai, A., Palomba, Cristiano, Paoletti, Federico, Pardi, Silvio, Pasqualetti, Antonio, Passaquieti, Roberto, Passuello, Diego, Perniola, B., Piergiovanni, Francesco, Pinard, Laurent, Poggiani, Rosa, Punturo, Michele, Puppo, Paola, Qipiani, K., Rapagnani, Piero, Ricci, Fulvio, Reita, V., Remillieux, Alban, Ricciardi, Iolanda, Ruggi, Paolo, Russo, Guido, Solimeno, Salvatore, Spallicci, Alessandro, Stanga, R., Tarallo, M., Toncelli, Alessandra, Tonelli, Mauro, Tournefier, Edwige, Travasso, Flavio, Tremola, C., Vajente, Gabriele, Verkindt, Didier, Vetrano, Flavia, Vicere, Andrea, Vinet, Jean Yves, Vocca, Helios, Yvert, Michel, Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux ( ARTEMIS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Institut national des sciences de l'Univers ( INSU - CNRS ) -Observatoire de la Côte d'Azur, Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'Annecy de Physique des Particules ( LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire des matériaux avancés ( LMA ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ) -Centre National de la Recherche Scientifique ( CNRS ), VIRGO, BOMBAR, Claudine, Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux (ARTEMIS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des matériaux avancés (LMA), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], General Relativity and Quantum Cosmology, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::Instrumentation and Methods for Astrophysics, Physics::Optics, Astrophysics::Cosmology and Extragalactic Astrophysics, [SDU.ASTR] Sciences of the Universe [physics]/Astrophysics [astro-ph], [ PHYS.ASTR.CO ] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::Galaxy Astrophysics, [ SDU.ASTR ] Sciences of the Universe [physics]/Astrophysics [astro-ph]
Abstract

Soumis à Applied Optics; The Virgo interferometer, aimed at detecting gravitational waves, is now in a commissioning phase. Measurements of its optical properties are needed for the understanding of the instrument. The techniques developed for the measurement of the optical parameters of Virgo are presented in this paper. These parameters are compared to the Virgo specifications.

Published
2007

14. Quantum zero point electromagnetic energy difference between the superconducting and the normal phase in a HTc superconducting metal bulk sample

Author

Annalisa Allocca, Saverio Avino, Sergio Balestrieri, Enrico Calloni, Sergio Caprara, Massimo Carpinelli, Luca D'Onofrio, Domenico D'Urso, Rosario De Rosa, Luciano Errico, Gianluca Gagliardi, Marco Grilli, Valentina Mangano, Maria Marsella, Luca Naticchioni, Antonio Pasqualetti, Giovanni Piero Pepe, Maurizio Perciballi, Luca Pesenti, Paola Puppo, Piero Rapagnani, Fulvio Ricci, Luigi Rosa, Carlo Rovelli, Davide Rozza, Paolo Ruggi, Naurang Saini, Valeria Sequino, Valeria Sipala, Daniela Stornaiuolo, Francesco Tafuri, Arturo Tagliacozzo, Iara Tosta e Melo, and Lucia Trozzo, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Allocca, Annalisa, Avino, Saverio, Balestrieri, Sergio, Calloni, Enrico, Caprara, Sergio, Carpinelli, Massimo, D'Onofrio, Luca, D'Urso, Domenico, De Rosa, Rosario, Errico, Luciano, Gagliardi, Gianluca, Grilli, Marco, Mangano, Valentina, Marsella, Maria, Naticchioni, Luca, Pasqualetti, Antonio, Pepe, GIOVANNI PIERO, Perciballi, Maurizio, Pesenti, Luca, Puppo, Paola, Rapagnani, Piero, Ricci, Fulvio, Rosa, Luigi, Rovelli, Carlo, Rozza, Davide, Ruggi, Paolo, Saini, Naurang, Sequino, Valeria, Sipala, Valeria, Stornaiuolo, Daniela, Tafuri, Francesco, Tagliacozzo, Arturo, e Melo, Iara Tosta, and Lucia Trozzo, And

Subjects
Casimir effect, Superconductivity (cond-mat.supr-con), Condensed Matter - Superconductivity, FOS: Physical sciences, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], high temperature superconductivity
Abstract

We provide a novel methodological approach to the estimate of the change of the Quantum Vacuum electromagnetic energy density in a High critical Temperature superconducting metal bulk sample, when it undergoes the transition in temperature, from the superconducting to the normal phase. The various contributions to the Casimir energy in the two phases are highlighted and compared. While the TM polarization of the vacuum mode allows for a macroscopic description of the superconducting transition, the changes in the TE vacuum mode induced by the superconductive correlations are introduced within a microscopic model, which does not explicitly take into account the anisotropic structure of the material., 20 pages, 13 figures, to be published in Phys.Rev. B

Published
2022

15. Progress in a Vacuum Weight Search Experiment

Author

Saverio Avino, M. Perciballi, Arturo Tagliacozzo, Giovanni Piero Pepe, L. Errico, Carlo Rovelli, Luigi Rosa, Gianluca Gagliardi, Naurang L. Saini, Valentina D. Mangano, Maria Marsella, L. Naticchioni, Enrico Calloni, Tristano Di Girolamo, F. Ricci, P. Puppo, Rosario De Rosa, Martina De Laurentis, Sergio Caprara, Daniela Stornaiuolo, P. Rapagnani, P. Ruggi, Francesco Tafuri, Gabriel Pillant, Marco Grilli, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU), Université de Toulon (UTLN), Avino, Saverio, Calloni, Enrico, Caprara, Sergio, De Laurentis, Martina, De Rosa, Rosario, Di Girolamo, Tristano, Errico, Luciano, Gagliardi, Gianluca, Grilli, Marco, Mangano, Valentina, Marsella, Maria Antonietta, Naticchioni, Luca, Pepe, Giovanni Piero, Perciballi, Maurizio, Pillant, Gabriel, Puppo, Paola, Rapagnani, Piero, Ricci, Fulvio, Rosa, Luigi, Rovelli, Carlo, Ruggi, Paolo, Saini, Naurang L., Stornaiuolo, Daniela, Tafuri, Francesco, and Tagliacozzo, Arturo

Subjects
noise, 01 natural sciences, Signal, Noise (electronics), thermal, energy: transition, vacuum state: energy, vacuum energy, Vacuum energy, fluctuation: quantum, 0103 physical sciences, Thermal, site, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Sensitivity (control systems), 010306 general physics, Quantum fluctuation, Physics, energy: Casimir, 010308 nuclear & particles physics, superconductivity, quantum fluctuations, temperature, sensitivity, quantum fluctuations, gravity, vacuum energy, Casimir energy, lcsh:QC1-999, Computational physics, gravity, Casimir energy, Casimir effect, cryogenics: design, fluctuation: vacuum, gravitation, proposed experiment, lcsh:Physics, Energy (signal processing)
Abstract

International audience; We present the status of the art of the Archimedes experiment, devoted to measuring the debated interaction of quantum vacuum fluctuations and gravity. The method is essentially the weighing of the transition energy of a layered superconductor where the contribution of vacuum energy to the transition energy is expected to be relevant. The transition is obtained by modulating the temperature of the superconducting sample at a frequency of about 10 mHz and the expected change of weight is measured with a suitably designed high sensitivity cryogenic beam balance. In this paper, we present an overview of the experiment, discussing the expected signal to be measured, and presenting in particular the result of a prototype balance operated in our present laboratory. In the frequency range of the measurement, the sensitivity is affected mainly by seismic, thermal, sensor, and control noise. We discuss these points showing in particular the design of the cryogenic apparatus, the final balance, and the quiet seismic site that will host the final measurement.

Published
2020

16. Archimedes experiment: weighing the vacuum

Author

Gianluca Gagliardi, F. Garufi, Ettore Majorana, Carlo Rovelli, Rosario De Rosa, Francesco Tafuri, F. Frasconi, Enrico Calloni, L. Errico, P. Puppo, P. Rapagnani, Luigi Rosa, P. Ruggi, Martina De Laurentis, A. Basti, Cosimo Stornaiolo, Daniela Stornaiuolo, S. Petrarca, F. Ricci, Sergio Caprara, Gianpiero Esposito, Saverio Avino, Marco Grilli, Centre de Physique Théorique - UMR 7332 (CPT), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Archimedes, De Laurentis, Martina, Avino, Saverio, Basti, Andrea, Calloni, Enrico, Caprara, Sergio, Errico, Luciano, Esposito, Giampiero, Frasconi, Franco, Gagliardi, Gianluca, Garufi, Fabio, Grilli, Marco, Majorana, Ettore, Petrarca, Simone, Puppo, Paola, Rapagnani, Piero, Ricci, Fulvio, Rosa, Luigi, Rovelli, Carlo, Ruggi, Paolo, Stornaiolo, Cosimo, Stornaiuolo, Daniela, Tafuri, Francesco, and De Rosa, Rosario

Subjects
experimental methods, Zero point energy, Measure (physics), Zero-point energy, 02 engineering and technology, 01 natural sciences, cavity: superconductivity, Optics, effect: Casimir, 0103 physical sciences, Torque, Sensitivity (control systems), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Physics, business.industry, energy: zero-point, 021001 nanoscience & nanotechnology, sensitivity, Casimir effect, modulation, Cascade, upgrade, 0210 nano-technology, business, Type-II superconductor, Energy (signal processing), reflection
Abstract

International audience; Archimedes is an experiment devoted to measure the weight of zero point energy by weighing acascade of rigid Casimir cavitities costituted by a layered type II superconductor, when the reflec-tivity of the cavities is modulated and thus the energy inside. In this paper the working principleof the experiment is presented and the results of the existing prototype are presented, showingthe torque sensitivity of about 10−11 Nm/sqrtHz in the region of frequency from about 50 mHzup two 150 mHz. Moreover the major upgrades needed to reach the desired final sensitivity arediscussed.

Published
2018

17. Toward optomechanical parametric instability prediction in ground-based gravitational wave detectors.

Author

Cohen DE, Allocca A, Bogaert G, Puppo P, and Jacqmin T

Abstract

Increasing laser power is essential to improve the sensitivity of interferometric gravitational wave detectors. However, optomechanical parametric instabilities can set a limit to that power. It is of major importance to understand and characterize the many parameters and effects that influence these instabilities. Here, we model with a high degree of precision the optical and mechanical modes involved in these parametric instabilities, such that our model can become predictive. As an example, we perform simulations for the Advanced Virgo interferometer (O3 configuration). In particular, we compute mechanical mode losses by combining both on-site measurements and finite element analysis with unprecedented levels of detail and accuracy. We also study the influence on optical modes and parametric gains of mirror finite size effects, and mirror deformations due to thermal absorption. We show that these effects play an important role if transverse optical modes of orders higher than four are involved in the instability process.

Published
2021
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18. Measurement of the optical parameters of the Virgo interferometer.

Author

Acernese F, Alshourbagy M, Amico P, Aoudia S, Antonucci F, Astone P, Avino S, Babusci D, Ballardin G, Barone F, Barsuglia M, Barsotti L, Beauville F, Bigotta S, Birindelli S, Bizouard MA, Boccara AC, Bondu F, Bosi L, Braccini S, Bradaschia C, Brillet A, Brisson V, Brocco L, Buskulic D, Calloni E, Campagna E, Cavalier F, Carbognani F, Cavalieri R, Cella G, Cesarini E, Chassande-Motin E, Christensen N, Clapson AC, Frédéric C, Corda C, Corsi A, Cottone F, Coulon JP, Cuoco E, Dari A, Datillo V, Davier M, del Prete M, De Rosa R, Di Fiore L, Di Virgilio A, Dujardin B, Eleuteri A, Ferrante I, Fidecaro F, Fiori I, Flaminio R, Fourier JD, Frasca S, Frasconi F, Francois O, Gammaitoni L, Garufi F, Genin E, Gennai A, Giazotto A, Giordano G, Giordano L, Gouaty R, Grosjean D, Guidi GM, Hebri S, Heitmann H, Hello P, Karkar S, Kreckelbergh S, La Penna P, Laval M, Leroy N, Letendre N, Lopez B, Lorenzini M, Loriette V, Losurdo G, Mackowski JM, Majorana E, Mantovani M, Marchesoni F, Marion F, Marque J, Martelli F, Masserot A, Mazzoni M, Menzinger F, Moreau J, Milano L, Moins C, Morgado N, Mours B, Nary-Man C, Nocera F, Pai A, Palomba C, Paoletti F, Pardi S, Pasqualetti A, Passaquieti R, Passuello D, Perniola B, Piergiovanni F, Pinard L, Poggiani R, Punturo M, Puppo P, Qipiani K, Rapagnani P, Ricci F, Reita V, Remillieux A, Ricciardi I, Ruggi P, Russo G, Solimeno S, Spallicci A, Stanga R, Tarallo M, Toncelli A, Tonelli M, Tournefier E, Travasso F, Tremola C, Vajente G, Verkindt D, Vetrano F, Viceré A, Vinet JY, Vocca H, and Yvert M

Abstract

The Virgo interferometer, aimed at detecting gravitational waves, is now in a commissioning phase. Measurements of its optical properties are needed for the understanding of the instrument. We present the techniques developed for the measurement of the optical parameters of Virgo. These parameters are compared with the Virgo specifications.

Published
2007
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