Seismic vibrations mechanical filters for the gravitational waves detector VIRGO

被引：31

作者：

Braccini, S ^{[1
]}

Bradaschia, C ^{[1
]}

DelFabbro, R ^{[1
]}

DiVirgilio, A ^{[1
]}

Ferrante, I ^{[1
]}

Fidecaro, F ^{[1
]}

Flaminio, R ^{[1
]}

Gennai, A ^{[1
]}

Giassi, A ^{[1
]}

Giazotto, A ^{[1
]}

Gorini, G ^{[1
]}

Losurdo, G ^{[1
]}

Palla, F ^{[1
]}

Pasqualetti, A ^{[1
]}

Passuello, D ^{[1
]}

Poggiani, R ^{[1
]}

Torelli, G ^{[1
]}

Zhang, Z ^{[1
]}

机构：

[1] UNIV PISA,DIPARTIMENTO FIS,I-56100 PISA,ITALY

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1996年 / 67卷 / 08期

关键词：

D O I：

10.1063/1.1147069

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

VIRGO is a detector of gravitational waves based on a laser interferometer with 3 km long arms, now under construction. In order to detect gravitational waves down to 10 Hz, the seismic noise has to be reduced by several orders of magnitude. New mechanical filters using cantilever springs as elastic elements have been developed for the VIRGO seismic isolation system. The spring total stiffness is reduced by more than one order of magnitude using magnetic antispring. A control system allows one to keep the spring length constant. The new filters provide an attenuation greater than or equal to 40 dB each for frequencies above 10 Hz and, compared to the previously adopted solution (gas springs), are much less sensitive to temperature changes. (C) 1996 American Institute of Physics.

引用

页码：2899 / 2902

页数：4

共 50 条

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Bradaschia, C
DelFabbro, R
DiVirgilio, A
Ferrante, I
Fidecaro, F
Flaminio, R
Gennai, A
Giazotto, A
LaPenna, P
Losurdo, G
Palla, F
Pasqualetti, A
Passuello, D
Poggiani, R
Zhang, Z
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