Miyo, K. Tanaka, Akutsu

Continued from 15916. No much progress.

Memo:

• To view the beam around POM1, we need to clear the beam path to PRM, and PRM must be controllable. This would be obvisous, but forgettable for the site-workers like me.
• The PMC is not so stable. K. Tanaka will report it.
• The oplev's light source fiber collimator holdes for MCi, MCo, and MCe are all old version. Should be replaced with newer ones. See here.

By the way, the Tilt sensor might be seriously considered for Type-A? Anyway, until when the tilt sensor will be at MCe? Who takes care of it?