IMPROVED SENSITIVITY IN A GRAVITATIONAL-WAVE INTERFEROMETER AND IMPLICATIONS FOR LIGO

Authors
ABRAMOVICI A ALTHOUSE W CAMP J DURANCE D GIAIME JA GILLESPIE A KAWAMURA S KUHNERT A LYONS T RAAB FJ SAVAGE RL SHOEMAKER D SIEVERS L SPERO R VOGT R WEISS R WHITCOMB S ZUCKER M
Citation
A. Abramovici et al., IMPROVED SENSITIVITY IN A GRAVITATIONAL-WAVE INTERFEROMETER AND IMPLICATIONS FOR LIGO, Physics letters. A, 218(3-6), 1996, pp. 157-163
Citations number
19
Categorie Soggetti
Physics
Journal title
Physics letters. A → ACNP
ISSN journal
03759601
Volume
218
Issue
3-6
Year of publication
1996
Pages
157 - 163
Database
ISI
SICI code
0375-9601(1996)218:3-6<157:ISIAGI>2.0.ZU;2-Y
Abstract
Sensitivity enhancements in the laser interferometer gravitational wav e observatory (LIGO) project's 40 m interferometer have been achieved through two major instrumental improvements, Improved vibration isolat ion has reduced the noise due to ground motion, New test masses with l ess mechanical dissipation were installed to lower the thermal noise a ssociated with mirror vibrations, The minimum interferometer noise (sq uare root of the spectral density of apparent differential displacemen t)reached 3 x 10(-19) m/Hz(1/2) near 450 Hz.