Length sensing and control strategies for the LCGT interferometer
General Relativity and Quantum Cosmology
2015-06-03 v2 Instrumentation and Methods for Astrophysics
Instrumentation and Detectors
Abstract
The optical readout scheme for the length degrees of freedom of the LCGT interferometer is proposed. The control scheme is compatible both with the broadband and detuned operations of the interferometer. Interferometer simulations using a simulation software Optickle show that the sensing noise couplings caused by the feedback control can be reduced below the target sensitivity of LCGT with the use of feed forward. In order to improve the duty cycle of the detector, a robust lock acquisition scheme using auxiliary lasers will be used.
Cite
@article{arxiv.1111.7147,
title = {Length sensing and control strategies for the LCGT interferometer},
author = {Yoichi Aso and Kentaro Somiya and Osamu Miyakawa},
journal= {arXiv preprint arXiv:1111.7147},
year = {2015}
}
Comments
13 pages 9 figures. A proceedings paper for Amaldi9 conference