Reports until 15:45, Wednesday 15 July 2026
H1 PSL
ryan.short@LIGO.ORG - posted 15:45, Wednesday 15 July 2026 (91053)
PSL Recovered Following Interlock Work and Chiller Swap

This afternoon I recovered the PSL successfully after it had been down since yesterday morning when work on the site laser safety interlock began.

The recovery went as expected and without issue. I've relocked the PMC and FSS, but am leaving the ISS disabled until the amplifiers and PMC have had time to warm up and the output power levels out. Looks like we'll need some alignment touchup into the PMC and RefCav, but that will also wait until things are warmed up, likely sometime tomorrow. Power watchdogs have been enabled for the night.