B. Bland (and G. Moreno, T. Sadecki)

On Friday, the first piece of glass was installed into a suspension at LHO.  The ITMy Penultimate Mass (PUM) was loaded into its QUAD lower structure in the LVEA fiber welding cleanroom.  We utilized the ergo arm, and the Genie lift, as we encountered some leg interference between the ergo arm and the weld trolley which holds the lower suspension structure.  We will look into a different weld trolley base mount to alleviate this interference for the future installs.  Pictures of the maneuver are on ReSource Space (note the software uploads the library backwards, so start clicking pictures at the end for appropriate install sequence):

https://ligoimages.mit.edu/?c=736

Collection entitled "LHO ITMy Glass PUM Install" if the link above doesn't work.

After we do a test hang of this mass with it's new wire loop, we anticipate loading the ITMy Test Mass this week in preparation for fiber welding later in the week.