Length sensing and control strategies for the LCGT interferometer
Length sensing and control strategies for the LCGT interferometer
复制标题
LCGT 干涉仪的长度传感和控制策略
DOI：
10.1088/0264-9381/29/12/124008
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
and O. Miyakawa
中科院分区：
文献类型：
--
作者：
Y. Aso;K. Somiya;and O. Miyakawa
提出了LCGT干涉仪长度自由度的光学读出方案。该控制方案与干涉仪的宽带和失谐操作兼容。利用仿真软件Optickle对干涉仪进行仿真，结果表明，采用前馈控制可以将反馈控制引起的传感噪声耦合降低到低于LCGT的目标灵敏度。为了提高探测器的占空比，将使用一种使用辅助激光器的鲁棒锁捕获方案。
The optical readout scheme for the length degrees of freedom of the LCGT interferometer is proposed. The control scheme is compatible with both the broadband and the 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.