Reports until 10:29, Sunday 12 May 2024
LHO VE
david.barker@LIGO.ORG - posted 10:29, Sunday 12 May 2024 - last comment - 10:35, Sunday 12 May 2024(77791)
Sun CP1 Fill, incomplete fill, trip temps reached before pressure spike, no flowing LN2 detected

Sun May 12 10:14:09 2024 INFO: Fill completed in 14min 5secs

outside temp was 28C (82F) at fill time, TCs dropped down to the -120C trip over 14mins before the pressure spike could build. There was a lack of free flowing LN2 which would have resulted in TCmins of -200C.

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david.barker@LIGO.ORG - 10:31, Sunday 12 May 2024 (77792)

I have lowered the nominal trip temps down to -130C (full summer mode, as was used last year from June - October).

david.barker@LIGO.ORG - 10:35, Sunday 12 May 2024 (77793)

We will try again at noon today.