20181108

Today's activities

Workers regarding the NAB: Akutsu, Yano, Simon, K. Tanaka; regarding the PD holders installation: Enomoto, Izumi, (Akutsu)

Checked the balance of the suspended NAB after leveling the assembly frame.
Then pulled up the NAB suspension from the assembly frame, and inserted into the Inoue tower, which was already taken out from the IYA by some days ago.
Finished today's works regarding NAB by preparing slings, the crane, and the chain block to the extent we can immediately lift up the NAB suspension with the tower.
- Actually we tested the required height under the chain block (揚程).
Attached PD holders, which was assembled on an AOS desk in IYC clean booth as a night shift; see here.

Insert the whole NAB suspension into the IYA. (How to align to where??)
Do some sanity checks.
Measure the resonant frequencies and the Q-factors with laser displacement sensors?? and oplevs?