Today's activities:
- All bolts (but 4 of them) on HAM3 Y+ door have been broken, in preparation for the door removal - most likely tomorrow, during laser safe conditions
- The cable trays on BSC8 have been removed, as they would be on the way for the 12" and 16.5" conflat feedthru removals - this activity will start after the LVEA will be laser safe
- The troubleshooting of the EX RGA ion pump has been done - see here in detail: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=75605
- The corner purge air was measured, and found satisfactory (~-46 deg C); seed details in comment