20180611

Today's activities

Workers: Akutsu, Ikenoue, Simon, L. Shimizu, Yokozawa

Took out the inner tower from the IXA chamber.
- Was dangerous when it was hung up to float.
Inserted the NAB suspension into the inner tower.
- Some screws were about to touch or going to touch the inner tower so we removed them.
- There were several points to be noted so that the NAB suspension won't crash against the inner tower, so be careful.
Found everything are not fully consistent. Especially we needed to decide what should be used as reference. Today we used an array of through holes as the reference; the NAB suspension was somehow moved so that the interface through holes can overlap the screw hole array at the one side; the other side of the inner tower showed the through holes were totally useless to access the NAB suspension.
Then measured several parts.

We found installing the dampers is mostly impossible the current structure; !!!! Urgently discuss how to resolve this!!!!
We found the relative positions are not perfect and need to be resolved finally when the NAB would be suspended.