With Hido Shingo

We performed the fine adjustment for the Pcal-X alignment with the ALIGNED state of the ETMX suspension.
We used PCAL_EX1(in Tx module) and PCAL_EX2(in EXA chamber) picomotors to adjust the path 1 so that the paths passed through the design position on the ETM and the center of the RxPD.
We left the Pcal-X laser ON, and the Pcal-X guardian state at OFS_CLOSED_LOW_POWER.

Attached files are showing beam positions on ETM and RxPD.

The total picomotor steps we requested are:

• PCAL_EX1, pico 2 (path 1 yaw): -550
• PCAL_EX2, pico 1(path 1 yaw): -600
• PCAL_EX2, pico 2(path 1 pitch): +400
• PCAL_EX2, pico 3(path 2 yaw): +100
• PCAL_EX2, pico 4(path 2 pitch): +300

The final optical efficiencies were (quick measurement):

• Path 1: 97.0%
• Path 2: 96.5%
• Path 1+2: 96.7%

These are similar to klog28820.