aLIGO LHO Logbook

H1 AOS

douglas.cook@LIGO.ORG - posted 07:53, Wednesday 17 April 2013 - last comment - 10:31, Thursday 18 April 2013(6109)

BSC2 Status

Gerardo finished up the optical lever periscope for the BS.
The  Y-arm baffle is aligned. 
The  Y-arm baffle needs to have the brackets removed to fully suspend it...do not forget this
The  X-arm is not aligned due to the mounting bolt pattern issue he encountered
The platform remains inside under the X baffle
IAS needs to finish breaking down our equipment and stowing it

Comments related to this report

gerardo.moreno@LIGO.ORG - 00:56, Thursday 18 April 2013 (6120)

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BS optical lever periscope installed, is set 7.5 degrees below horizontal.  3 photos attached, BS elliptical baffle from AR side, a comparison of the BS optical lever periscope (before and after photos), and a view of the installed periscope.

Images attached to this comment

thomas.vo@LIGO.ORG - 10:50, Wednesday 17 April 2013 (6111)

Link

Jim W. Thomas V.

We have removed the locking brackets on the ITMY Elliptical baffle so it is fully suspended (and rather vulnerable).  We left the ITMX Elliptical baffle with the brackets still attached in case any other alignment work or modifications needed to be done.  If it is decided that ITMX's brackets should be taken off, it will be done as well.

jim.warner@LIGO.ORG - 10:31, Thursday 18 April 2013 (6123)

Link

While I was in chamber for Thomas' work, I did a survey to see if any tools had been left in any of the usual nooks and crannies. I didn't find anything, so I think the chamber is clear for close up. I will be in again, probably tomorrow, to wipe down the floor and will do another check.