ryan.short@LIGO.ORG - posted 12:19, Sunday 13 July 2025 - last comment - 08:42, Monday 14 July 2025(85722)
Lockloss @ 18:53 UTC - Power Glitch
Lockloss @ 18:53 UTC from site power glitch, trend attached. This tripped the end station HEPI pump controllers (and so far nothing else, that I've noticed), so I consulted with Jim and he walked me through what needs to be done to reset them. Heading out to the end stations now.
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Pump stations and all seismic systems fully recovered. Starting an initial alignment now.
H1 back to observing at 21:50 UTC. Initial alignment and lock acquisition both ran fully automatically and without issues.
Note that none of the UPS units emailed us regarding this event, which is unusual for a glitch which caused HEPI pump controller issues.
Jonathan checked the front panel on the MSR UPS and confirmed it logged nothing at the time of this power glitch.