Reports until 17:05, Wednesday 07 February 2024
LHO VE
janos.csizmazia@LIGO.ORG - posted 17:05, Wednesday 07 February 2024 (75774)
2-7 vent vacuum diary
Today's activities:
- EX pumpdown status: it is at ~8.2E-8
- EX RGA bakeout: now it is ramped up to 150 deg C: this is the set temperature. RGA scans next Monday-Tuesday
- EX-BRS: it is ready for pumpdown. Everything is set, tomorrow the pumpdown starts
- The BSC8 AIP railed this morning: it pumped the BSC8 Annulus volume, while it was also backed with an Aux cart - the gas load is pretty high through an adjacent O-ring from the vented volume, so in the future all GV Annulus volumes will be pumped with aux carts with the AIP powered off, to avoid AIP overload
- The cable tray of west-side BSC8 has been placed back to its original position
- A leak was located on the HAM8 RGA calibrated leak. A pre-vent RGA scan will be done though, just to make sure if there is nothing severely out of the ordinary, and the issue will be handled during the vent