betsy.weaver@LIGO.ORG - posted 14:44, Thursday 21 November 2013 - last comment - 14:56, Thursday 21 November 2013(8670)
Witness Plate in HAM2 added "just before pump down"
Today, in the final steps before putting the doors on HAM2, we laid a fresh witness plate (wafer) near to the center of the table. It is in the area slightly behind PRM. This is the witness plate that should be picked up and analyzed immediately after the next vent and the doors are off.
We also added a 1" witness optic in front of the MC3. It is standing up, clamped between 2 PEEK cable clamps.