(Betsy, Travis)

The ITMy has been hung in the main chain lower structure in a double configuration (TM and PUM hanging from a non-suspended UIM).  IAS measured that with the UIM sitting level to within 0.1mm over it's length, the ITMy is hanging at 3.4 mRad down.  Recall that we have introduced a metal PUM with wire clamps, a wire loop around the ITMy, and new wire prisms on the ITMy all of which contribute to this error.  As well, the level measurement of the UIM has a larger error bar than we would like as there is little lever arm to gauge the level on.  As well, there is not a trusted way to measure the pitch of the now all-metal PUM, so we do not know exactly which knob to turn to fix the 3.4 mRad pitch error.  Because this error is well within our course mechanical adjustment range higher up in the full suspension, we are concluding to adjust it out once we are back inside BSC8, mated to the rest of the QUAD suspension.

The height of the lower chain was also checked by IAS today.  We are working on chewing on the numbers to verify that we have hung the ITMy at the correct height.