R&D (FilterCavity)
YuhangZhao - 15:29, Monday 03 August 2020 (2138)
Optical implementation of AA system

Aritomi, Yuhang

It was reported in elog2130 that there is discrepancy between measurement in the path for QPD1 and QPD2.

This is due to the implementation is not the same with design. Due to the space limitation, QPD2 is not placed in the correct position. Therefore, we should move QPD2 further three holes.