Journal ArticleDOI
Thermal noise reduction for present and future gravitational wave detectors
P. Amico,P. Amico,L. Bosi,L. Bosi,Luca Gammaitoni,Luca Gammaitoni,G. Losurdo,Fabio Marchesoni,Fabio Marchesoni,Marina Mazzoni,Marina Mazzoni,M. Punturo,Ruggero Stanga,Ruggero Stanga,Alessandra Toncelli,Alessandra Toncelli,M. Tonelli,M. Tonelli,F. Travasso,F. Travasso,F. Vetrano,F. Vetrano,H. Vocca,H. Vocca +23 more
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TLDR
In this paper, the thermal noise in mirror suspension is and will be the most severe fundamental limit to the low-frequency sensitivity of interferometric gravitational wave detectors currently under construction, and new materials and new designs are needed to further reduce the suspension thermal noise.Abstract:
Thermal noise in mirror suspension is and will be the most severe fundamental limit to the low-frequency sensitivity of interferometric gravitational wave detectors currently under construction. The technical solutions, adopted in the Virgo detector, optimize the current suspension scheme, but new materials and new designs are needed to further reduce the suspension thermal noise. Silicon fibers are promising candidates both for room temperature advanced detectors and for future cryogenic interferometric detectors.read more
Citations
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Breaking strength tests on silicon and sapphire bondings for gravitational wave detectors
TL;DR: In this paper, the breaking strength of the silicate bonding that glues cylinders of silicon (Si) and sapphire (Al2O3) has been investigated, and all material combinations, flatness quality and orientations have been tested over time.
Journal ArticleDOI
First characterization of silicon crystalline fibers produced with the μ-pulling technique for future gravitational wave detectors
M. Alshourbagy,P. Amico,L. Bosi,G. Cagnoli,E. Campagna,F Cottone,A Dari,Luca Gammaitoni,M. Lorenzini,G. Losurdo,Fabio Marchesoni,F. Martelli,F. Piergiovanni,M. Punturo,Alessandra Toncelli,Mauro Tonelli,F. Travasso,F. Vetrano,H. Vocca +18 more
TL;DR: In this article, the design and fabrication of low thermal-noise suspensions made of a new material presently under investigation is reported. And the first measurements of the fiber mechanical and thermal properties at room temperature have been performed and interpreted.
Journal ArticleDOI
Molecular adsorbed layer formation on cooled mirrors and its impacts on cryogenic gravitational wave telescopes
K. Hasegawa,Tomotada Akutsu,Nobuhiro Kimura,Yoshio Saito,Toshikazu Suzuki,Takayuki Tomaru,A. Ueda,Shinji Miyoki +7 more
TL;DR: In this article, the formation of a molecular adlayer on a cold mirror was investigated and the formation rate of the adlayer was shown to be $27.2 and $2.073, respectively.
Journal ArticleDOI
Orthogonal ribbons for suspending test masses in interferometric gravitational wave detectors
B. Lee,Li Ju,David Blair +2 more
TL;DR: In this paper, a simple modification of ribbon suspensions for laser interferometric gravitational wave detectors can substantially reduce the amplitude of violin modes at the expense of a small deterioration of suspension thermal noise.
Journal ArticleDOI
Cryogenic vacuum considerations for future gravitational wave detectors
L. Spallino,M. Angelucci,A. Pasqualetti,K. Battes,C. Day,Steffen Grohmann,Ettore Majorana,F. Ricci,Roberto Cimino +8 more
TL;DR: In this article, the consequences of hosting a cryogenically cooled mirror in a vacuum system and sets new limits for an acceptable operating pressure to avoid frost formation in a given period of continuous data taking.
References
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Journal ArticleDOI
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TL;DR: In this article, a relation between the generalized resistance and the generalized forces in linear dissipative systems is obtained, which forms the extension of the Nyquist relation for the voltage fluctuations in electrical impedances.
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Journal ArticleDOI
Thermodynamical fluctuations and photo-thermal shot noise in gravitational wave antennae
TL;DR: In this article, thermal expansion coefficients of the temperature in mirrors of gravitational wave antennae are transformed through the thermal expansion coefficient into additional noise, which leads to the necessity to reexamine the choice of materials for the mirrors.
Journal ArticleDOI
Recommended Values for the Thermal Expansivity of Silicon from 0 to 1000 K
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Related Papers (5)
Monocrystalline fibres for low thermal noise suspension in advanced gravitational wave detectors
P. Amico,P. Amico,L. Bosi,L. Bosi,Luca Gammaitoni,Luca Gammaitoni,G. Losurdo,Fabio Marchesoni,Fabio Marchesoni,Marina Mazzoni,Marina Mazzoni,Daniela Parisi,M. Punturo,Ruggero Stanga,Ruggero Stanga,Alessandra Toncelli,Alessandra Toncelli,M. Tonelli,M. Tonelli,F. Travasso,F. Travasso,F. Vetrano,F. Vetrano,H. Vocca,H. Vocca +24 more