Reports until 18:47, Wednesday 21 November 2018
LHO VE
chandra.romel@LIGO.ORG - posted 18:47, Wednesday 21 November 2018 - last comment - 13:38, Friday 11 January 2019(45460)
HAM 1,6 on turbos and IP2+baffle installed

[Kyle, Gerardo, Chandra]

The day started with pumping HAM6, followed by HAM1 (after some cart controls troubleshooting by Kyle), along with pumping HAM 1,2,5,6 annulus volumes, and the team also managed to remove and replace ion pump #2, and install its chevron baffle.

We pumped on IP2, but its helium background is high, so we left leak detector valved in and plan to leak check on Monday. We also still need to leak check HAMs 1&6 new feedthroughs.

One of us will make a log entry when it is safe to turn high volts ON in HAM6 (and HAM1) for crews coming in over the weekend. PT-110 (on HAM6) and PT-100B (on HAM1) must read below 1x10-5 Torr.

All cleanrooms are OFF and VE decoupled from BSC10 annulus at EY.

Comments related to this report
chandra.romel@LIGO.ORG - 18:47, Wednesday 21 November 2018 (45461)

Excellent work, vacuum team! laugh

stephen.appert@LIGO.ORG - 15:35, Thursday 10 January 2019 (46345)

Did anyone track nipple and baffle serial number information?

gerardo.moreno@LIGO.ORG - 13:38, Friday 11 January 2019 (46371)VE