Koki Okutomi ,SOKENDAI, D2 (Supervisor; Yoichi Aso)
Control Strategy of Vibration Isolation System in KAGRA
Laser interferometric gravitational-wave detector KAGRA has vibration isolation systems called SAS which attenuate fluctuation of mirrors from seismic disturbance. The largest type of SAS is a multi-stage pendulum consists of 9 suspended stages. We need to control the mirror with the complicated system to operate the laser interferometer. In this talk, I present a strategy how to control the SAS and measurements for a sensor/actuator unit related to the control strategy.
Tomonari Michiyama ,SOKENDAI, D1 (Supervisor; Daisuke Iono)
Chemical composition in merging galaxy NGC3256