betsy.weaver@LIGO.ORG - posted 18:47, Wednesday 30 May 2012 - last comment - 22:02, Wednesday 30 May 2012(2989)
BSC6 SUS/TMS/IAS Closeout
(from Betsy on behalf of Keita, Cheryl, Travis, Gerardo, Jason)
This afternoon:
- the ring heater was closed and tightened in place (new tools worked fine on the nuts)
- the TMS alignment was checked to be good
- the ETMy optical lever beams were identified
- the IAS horizontal periscope was removed
- the flooring was tightened down (added the remainder of the bolts)
- tools, stools, etc were removed from chamber
- 7 witness plates were placed in the chamber and manifold area
- EQ was removed from outside of chamber door areas to facilitate door replacement
ETMY Optical Lever Beams Identified.
We found 4 bright beams coming out of the viewport, two pairs belonging to ETMY and the other two from ERM. The two upper spots on the picture are from the ERM, the lower ones from ETMY. This was confirmed by moving the ERM, when doing so the two upper spots moved, while the other two remain still. The beam from the front surface of ETMY is the lowest spot on the photo.