travis.sadecki@LIGO.ORG - posted 17:23, Wednesday 31 January 2024 - last comment - 19:04, Wednesday 31 January 2024(75655)
1-31 vent vacuum diary
Today activities:
-EX pumpdown continues. Roughing via Hepta pump was restarted this morning, and by ~14:30 PT pumping was transitioned to the turbo station (initially backed by the Hepta then swapped to scroll pump backing once the inlet pressure was in the e^-2 Torr range).
-Quantity 2 of the 3IFO 12" CF-to-triple-4.5" CF reducer/feedthrough assemblies were removed from the north side of BSC8. These were replaced with 12" CF blanks.
Todays purge air dew point measurement, -43.9degC
CF assemblies removed from BSC8 north side.