Here are some plans / rough procedures for this week's vent. It is unlikely that I have though of everything, but this should be a reasonable starting point.

The mode cleaner still hasn't been locked in air, we may not want to touch the Y arm optics until we are able to lock to the Y arm and dither align, so we are sure to keep the input pointing from drifting away too much.

Primary objectives:

• Re-suspend ETMX
• First contact of all arm cavity optics

Secondary objectives:

• Install new gauges
• Replace 40mm baffles with 50mm baffles
• Check cleanliness of inner viewport surfaces

ETMX project

• Open ETMX chamber
• Take all manner of photos of ETMX suspension in-situ
  • If some kind of obvious issue is evident, fix it, proceed accordingly
• Mark suspension position
• Move suspension to edge of the table, more pictures + inspection
• Move suspension to flow bench, remove optic
• Transport optic to clean room
• Acetone soaking / standoff removal
• Re-glue side magnet
• Re-glue guide rod + standoff
• OSEM transplant from old to new suspension
• Suspend, following SOS suspension procedure
• Drive optic around, see if jumps are evident
• Clean with first contact
• Reinstall optic, align, etc.

Optic cleaning

For $optic in [ITMX, ITMY, ETMY]:

• Open chamber
• Take many, many pictures
• Mark suspension position
• move suspension to edge, take pictures of HR surfaces
• Mark OSEM orientation, remove oems
• Clean AR and HR surfaces with first contact
• Reinstall OSEMS at proper position, rotate to minimize bounce/roll coupling
• Reinstall optic, align, etc.