Reports until 19:58, Thursday 07 March 2024
LHO VE
janos.csizmazia@LIGO.ORG - posted 19:58, Thursday 07 March 2024 (76202)
3-7 vent vacuum diary
The pressures:
HAM7: ~2.7E-7 Torr
HAM8: ~5.34E-7 Torr
Corner: ~4.4E-8 Torr
EX: ~5.0E-9 Torr

Today's activities:
- At the MY and EY stations the turbo-side Hepta header filters have been added, closing WP11570
- At these stations, Turbo functionality test was also done, see here more in-detail: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=76196

- HAM8 Turbo was valved out, and HAM8 was valved together with IP24 (FCV-9 open). However, there is still a big jump in pressure, the Ion pumps turned around only as of this writing
- HAM7 Annulus Ion Pump has been taken care of. It was believed that the G3/8 plug is the reason for the railing Ion-pump, but in the end a simple controller swap solved the issue
- Relay tube - HAM7 - HAM8 further schedule: This volume will be valved in to the main volume tomorrow, as soon as the commissioning team needs it - RV1; FCV1; FCV2; FCV3; FCV4; FCV8 will be opened