Disk excited at 12:01pm. Exited the room at 12:03pm.
Opened the chamber at about 2:30pm, got the disk out for edge polishing, installed it back at 3:30pm, pumping down at 3:40pm.
Stopped the roughing pump at 4:44:00pm (+60 seconds clean data, GPS 1155944657). Switched on the HV amplifier, excitation at 4:47:30pm. Recentered QPD, clean data from 4:48:30pm (GPS 1155944927)
After a first look at the data, it seems that something went wrong. I restearted the roughing pump and will pump overnight. I found the QPD miscentered, so I centered it again.
Excited again at about 5:46:35pm. Clean data from 1155948460