with Hirata-san, Fabian-san, Ikeda-san
We inspected the situation of SR3 mirror using the same lights used in the SRM mirror.
On the HR side, there is so much dust, some line-like stains, and circular stain.
The AR side is relatively clean but we found some dust.
Also, these new lights helped us to realize that inside of the camber is so dirty. So we need to clean up inside the chamber well after applying the FC.
https://www.dropbox.com/work/Subsystems/MIR/mirror%20inspection/SR3/20220621
Hirata-san and Fabian-san locked the suspension and they cleaned the floor around the SR3 chamber.
And I applied the FC on its AR side.
Two peeling tabs were put on the additional applied area.
We'll apply on the HR side and clean inside the chamber tomorrow.
with Hirata-san
We applied the FC on the HR side of the SR3 mirror.
And then we used a wiper with EtOH and a vacuum cleaner to clean the inside of the chamber while illuminating it with a green light.
We will remove both FC and inspect the mirror again tomorrow.
with Hirata-san, Fabian-san
Before removing the FC, we cleaned the floor again, and then we peeled off both FC and inspected the mirror again.
It looks pretty clean around the center of each side, but unfortunately, residues on the FC circumference remain on both sides respectively.
I don't know why this happened because I thought I had applied it the same way I always do...
Furthermore, some line stains, or scratches, on the upper right side of HR still remain. FC couldn't remove them.
https://www.dropbox.com/work/Subsystems/MIR/mirror%20inspection/SR3/20220624
After some discussion, we started to re-apply partially to remove these residues only on HR.
We are going to remove them and inspect the mirror again next Monday.
with Hirata-san, Fabian-san and checked by Miyoki-san
We removed four parts of FC on the HR surface and inspected it using green light.
Some FC stains could be cleaned successfully but unfortunately, some FC residues were still on the circumference line of the first FC.
It was not perfect, but we decided to finish this cleaning work.
Please confirm each picture.
https://www.dropbox.com/work/Subsystems/MIR/mirror%20inspection/SR3/20220627
