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.
@article{arxiv.1709.02574,
title = {Mirror actuation design for the interferometer control of the KAGRA gravitational wave telescope},
author = {Yuta Michimura and Tomofumi Shimoda and Takahiro Miyamoto and Ayaka Shoda and Koki Okutomi and Yoshinori Fujii and Hiroki Tanaka and Mark A. Barton and Ryutaro Takahashi and Yoichi Aso and Tomotada Akutsu and Masaki Ando and Yutaro Enomoto and Raffaele Flaminio and Kazuhiro Hayama and Eiichi Hirose and Yuki Inoue and Takaaki Kajita and Masahiro Kamiizumi and Seiji Kawamura and Keiko Kokeyama and Kentaro Komori and Rahul Kumar and Osamu Miyakawa and Koji Nagano and Masayuki Nakano and Naoko Ohishi and Ching Pin Ooi and Fabián Erasmo Peña Arellano and Yoshio Saito and Katsuhiko Shimode and Kentaro Somiya and Hiroki Takeda and Takayuki Tomaru and Takashi Uchiyama and Takafumi Ushiba and Kazuhiro Yamamoto and Takaaki Yokozawa and Hirotaka Yuzurihara},
journal= {arXiv preprint arXiv:1709.02574},
year = {2019}
}
Comments
21 pages, 7 figures (typo in p.12 on magnetic field gradient fixed for v3)