[Shoshana]

Craned the CRS over to the temporary clean room over by HAM3 on 6/18. Unfortunately the flexures (SN13,SN20) broke during the transport process. It seemed like a clean break that was potentially caused by the proof mass jolting upwards crushing the flexures (photos attached), and the locks remained in place.

CRS was re-suspended chamber side HAM3 with flexures SN15/SN19, which is the last of the approved flexures of the first batch, but the other batch is ready for pickup. Suspension was painless as the locks kept the proof mass centered even after the break. The CRS CoM was balanced by eye.

There isn't an easily accessible outlet near the temporary clean room, so I was unable to get a resonance frequency measurement on Thursday. The hope is that because the proof mass remained locked when the flexures broke, the HoQI should hopefully still be mostly aligned with the CRS and only need small adjustments which will be done this week.