Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope
Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope
复制标题
KAGRA引力波望远镜干涉仪控制的镜面驱动设计
DOI：
10.1088/1361-6382/aa90e3
复制
发表时间：
2017
影响因子：
3.5
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Michimura Yuta ;Shimoda Tomofumi ;Miyamoto Takahiro ;Shoda Ayaka ;Okutomi Koki ;Fujii Yoshinori ;Tanaka Hiroki ;Barton Mark A ;Takahashi Ryutaro ;Aso Yoichi ;et al.
KAGRA 是一座位于日本地下的 3 公里低温干涉引力波望远镜。为了达到目标灵敏度，必须使用附加的执行器对干涉仪镜子的相对位置进行微调。我们开发了一个模型来模拟 KAGRA 干涉仪的长度控制回路，具有真实的悬架响应和反射镜驱动的各种噪声。使用我们的模型，我们设计了驱动参数，使其具有足够的力范围来获得锁定并控制所有长度自由度，而不会引入过多的噪声。
KAGRA is a 3 km cryogenic interferometric gravitational wave telescope located at an underground site in Japan. In order to achieve its target sensitivity, the relative positions of the mirrors of the interferometer must be finely adjusted with attached actuators. We have developed a model to simulate the length control loops of the KAGRA interferometer with realistic suspension responses and various noises for mirror actuation. Using our model, we have designed the actuation parameters to have sufficient force range to acquire lock as well as to control all the length degrees of freedom without introducing excess noise.