aLIGO LHO Logbook

LHO VE

kyle.ryan@LIGO.ORG - posted 20:37, Wednesday 10 August 2016 - last comment - 13:25, Thursday 11 August 2016(29007)

HAM6 is on the Turbo

Adjacent pump port volumes isolated after Turbo at full speed, Aux. pump carts at HAM5 and HAM6 annulus pump ports pumping combined annulus volume in parallel.  Corner Station vent/purge air supply left running in the event that final leak testing tomorrow results in a needed vent cycle to fix leak.  

Also, Y-end RGA bake cycle completed (maybe get background scans tomorrow - crisis permitting!) 

1840 hrs. local -> Leaving site now.

Comments related to this report

james.batch@LIGO.ORG - 13:25, Thursday 11 August 2016 (29023)

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Web view of vacuum MEDM screens has been restarted to pick up the modified screens.

chandra.romel@LIGO.ORG - 21:27, Wednesday 10 August 2016 (29008)

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Wow, that pumped down fast! Current pressure at 9:20pm is 1.5e-4 Torr. Love the new web based MEDM screens! New PT-110 gauge readout is not updated on MEDM screenshot.

kyle.ryan@LIGO.ORG - 09:15, Thursday 11 August 2016 (29012)

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Chandra's "Wow!" comment above only makes sense considering my "1840 hrs. local -> Leaving site now".  In fact it was "2040 hrs".  Those two extra hours makes this pump down "typical"

chandra.romel@LIGO.ORG - 09:17, Thursday 11 August 2016 (29013)

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Ah, ok - normal 3 hr roughing pump down till we transition to turbo.