Silicon mirror suspensions for gravitational wave detectors

被引：31

作者：

Cumming, A. V. ^{[1
]}

Cunningham, L. ^{[1
]}

Hammond, G. D. ^{[1
]}

Haughian, K. ^{[1
]}

Hough, J. ^{[1
]}

Kroker, S. ^{[2
]}

Martin, I. W. ^{[1
]}

Nawrodt, R. ^{[2
]}

Rowan, S. ^{[1
]}

Schwarz, C. ^{[3
]}

van Veggel, A. A. ^{[1
]}

机构：

[1] Univ Glasgow, Sch Phys & Astron, Inst Gravitat Res, Scottish Univ Phys Alliance, Glasgow G12 8QQ, Lanark, Scotland

[2] Univ Jena, Inst Angew Phys, Abbe Ctr Photon, D-07743 Jena, Germany

[3] Univ Jena, Inst Festkorperphys, D-07743 Jena, Germany

来源：

CLASSICAL AND QUANTUM GRAVITY | 2014年 / 31卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

gravitational; wave; suspension; silicon; strength; cryogenic; TEST MASS SUSPENSION; THERMAL NOISE; INTERNAL-FRICTION; LOW-TEMPERATURES; QUALITY FACTOR; FUSED-SILICA; DISSIPATION; FRACTURE; CRYSTALS; PENDULUM;

D O I：

10.1088/0264-9381/31/2/025017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

One of the most significant limits to the sensitivity of current, and future, long-baseline interferometric gravitational wave detectors is thermal displacement noise of the test masses and their suspensions. This paper reports results of analytical and experimental studies of the limits to thermal noise performance of cryogenic silicon test mass suspensions set by two constraints on suspension fibre dimensions: the minimum dimensions required to allow conductive cooling for extracting incident laser beam heat deposited in the mirrors; and the minimum dimensions of fibres (set by their tensile strength) which can support test masses of the size envisaged for use in future detectors. We report experimental studies of breaking strength of silicon ribbons, and resulting design implications for the feasibility of suspension designs for future gravitational wave detectors using silicon suspension fibres. We analyse the implication of this study for thermal noise performance of cryogenically cooled silicon suspensions.

引用

页数：16

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