TJ and I started the picomotor install today, following procedure T2100117 and cabling doc D1101814. This work was already done at LLO in July (HWSX and HWSY).
Dust counts around 120/20 when we opened the covers, this isn't recorded in EPICS (alog 60435). We removed the contamination control wafer and gave to Betsy. Note that this wasn't removed as soon as the doors were removed.
Today we assembled the new HWSX STEER M1 (photo attached) before opening the HAM4 soft covers. We then added a eye-safe laser and steering mirror we will use for alignment. We struggled to match the HWS beam path as our laser is on a fixed mount so tomorrow will add a second steering mirror.
Can you guys take some top-down photos of the mirror mounts (from directly above) once installation is done? Thanks.
We will take photos before closing Aidan.
This morning we began setting up the laser for HWSX. We ran into the same problem as LLO (LLOalog#56588). To get the beam centered on HWSX Steer M2, M3 and SR3 the beam was off centered to the right on HWSX Steer M1. See photos attached. Next time we can get in HAM4 we will continue with this laser alignment. The mirrors shouldn't be translated much during the swap- we will mark the position of the pedestals using clamps. So spot positions shouldn't matter too much.
Far far we've added one iris (reflection from SR3). We have also moved temporarily moved the picomotor controller from on top of the HWS table to on top of the rack, ready for picomotor testing.
