학술논문
Seismic isolation enhancements for initial and advanced LIGO
Document Type
Article
Author
Abbott, R; Adhikari, R; Allen, G; Baglino, D; Campbell, C; Coyne, D; Daw, E; DeBra, D; Faludi, J; Fritschel, P; Ganguli, A; Giaime, J; Hammond, M; Hardham, C; Harry, G; Hua, W; Jones, L; Kern, J; Lantz, B; Lilienkamp, K; Mailand, K; Mason, K; Mittleman, R; Nayfeh, S; Ottaway, D; Phinney, J; Rankin, W; Robertson, N; Scheffler, R; Shoemaker, D H; Wen, S; Zucker, M; Zuo, L
Source
Classical and Quantum Gravity; March 2004, Vol. 21 Issue: 5 pS915-S921, 7p
Subject
Language
ISSN
02649381; 13616382
Abstract
A seismic isolation system for the proposed Advanced LIGO detector upgrade is under development. It consists of a two-stage in-vacuum active isolation platform that is supported by an external hydraulic actuation stage. A full-scale preliminary-design technology demonstrator of the in-vacuum platform has been assembled and is being tested at Stanford's engineering test facility. Unanticipated excess ground motion from local human activity at LIGO Livingston has prompted accelerated development of the external stage for installation and use in the initial Livingston detector. As an interim measure, active external isolation in the laser beam direction is implemented using existing PZT external actuators.