[Hirata, Washimi]
This morning, we installed the side stoppers for the MCe suspensions.
- Fixed the mirror with the lower stoppers (HR/AR surface).
- Removed the current top stopper plate and adapter blocks.
- Installed the new adapter between the frames and the stopper plate.
- Attached the side guide plates. (Fig.1)
- Assembled the new stopper plate. The stoppers were set vertically. (Fig.2)
- Inserted the new stopper plate to the upper position of the guide.
- Rotated the stoppers to the 45° angle. (Fig.3)
- Moved down the stopper plate to the lower position of the guide.
- Adjusted the height of the stoppers.
- Removed the guide plate. (Fig.4)
- Released the mirror and adjusted the gaps of all stoppers to ~2mm.
These works were finished (within ~1h), but after that, the oplev beam was moved a lot in the yaw.
We tried to align the mirror with Takahashi-san and Ikeda-san, but during this work, one magnet (upper right viewed from the HR side) was fallen. (Fig.5)
Details will be reported later as another log entry.
