Reports until 19:03, Tuesday 27 February 2024
LHO VE
janos.csizmazia@LIGO.ORG - posted 19:03, Tuesday 27 February 2024 (76020)
2-27 vent vacuum diary
Today's activities:
- HAM8 was closed, the Y+ door and the 2 pcs. of Y- ports. The pumpdown of the main volume, Annulus volume, and the RGA has been already started - see for details: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=76014
- HAM7 pumpdown status: ~5.5E-7 Torr
- Corner pumpdown: ~4E-7 Torr, ~171 hours after the HV pumping started
- Corner (and HAM7) further schedule: RGA scan #1: 2-27; Valve together the corner, HAM7, relay tube, X manifold (open GVs GV2, RV1, FCV1, FCV2): 2-28; Ion pumps (IP1, IP2, IP3, IP4, IP19) valve-in: 2-29; Turbo pump valve-out: 3-1; RGA scan #2: 3-4; GV5 & GV7 open: 3-4
- EX pumpdown status: 2.5E-8 Torr.
- EX further schedule: RGA scan #1: 2-29; Ion pump valve-in: 2-29; Turbo pump valve-out: 3-1; RGA scan #2: 3-4; GV20 open: 3-4
- The RGA scan #1 for the corner (see above) has been done, for details see https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=76012