[Hirata, Dan Chen-san, Ikeda-san, Ushiba-san]

We checked Traverser position, and moved it to the previous position. Finaly, length Oplev was recovered.

• Removed bolts, and opened PR2 chamber top part.
• Measured Traverser position by caliper and compared with old data (2022/7/26) which was measured before closing chamber.
• We confirmed Traverser works well or not. Direction is correct.
• We moved Traverser to previous position(2022/7/26). -1100um to y direction, and -3000um to x direction.
• We measured Traverser position by caliper again. It was almost recovered to previous position(2022/7/26).
• At the same time, length Oplev was recovered.
• We closed chamber top.
• Adjusted tilt Oplev by IM Yaw pico -2400 steps.
• Length Oplev is HOR:-13.4um.
• We checked IM OSEM(3700～7640). All flags are not touching.

After that, Ushiba-san realized BF damper V1 is around edge of calibration line(about 5800). Tomorrow, we will open chamber top, and see BF and BF damper situation.