Today TJ and I (with some Kissel and Fil support) made some good progress on the HAM5 OFI alignment of rejected, ZM6 back reflection and ghost beam paths. We:
- Added the black glass beam dump to the back of the OFI 2" Pico'd siskiyou mount (after some interference rework with a set screw on the mount).
- Adjusted the 2" Mirror to point the Rej beam through the PD path which was set in place per the SYS layout drawing D2100395.
- Verified that it looks like the ghost beam will hit the ZM6 front face baffle (although baffle is not in hand so will need to check later).
- Verified that back beam from OFI to ZM6 is roughly centered on ZM6 optic (real optic swapped in yesterday by Rahul and we cleaned both sides with FirstContact).
- OFI ECD brackets were adjusted in small amounts due to the ever so slight table balance position (well under a mm of adjustment needed on each, judging by the "OFI" guage tool.
- Set Open Light Voltages of the new UK provided 4x ZM6 BOSEMs - set Offsets and gains in medm screen. Adjusted BOSEMs into flags to set them at ~50% OLV. Found issues with driving ZM6 with medm alignment sliders.
- Ground issue found on ZM6 HAM-A coil driver chassis - Fil pulled it, fixed it, reinstalled it.
- ZM5 Cookie cutter on H7 to guide us to where ZM6 needs to ultimately point.
- Let the beam propogate from ZM6 to HAM7 - saw that it is many inches low and to the -Y of the ZM5 area. Had more confusion while trying to drive ZM6 - turns out that the ~ +/- 5k range on the slider only gives us a couple of cm's of motion at ZM5.
Next up: Adjust physical ZM6 suspension to correct course yaw and pitch. Wait for more baffle parts to go through C&B.
Temp laser still set up in HAM5, but laser is off.
Forgot to mention after with some troubleshooting by Fil and Richard to get the OFI picomotors going, we were able to test that it works and can drive the beam around from the usual medm controls.