cheryl.vorvick@LIGO.ORG - posted 13:02, Monday 27 May 2019 - last comment - 14:24, Monday 27 May 2019(49474)
OPS Day Mid-Day Update
- H1 lost lock, which looks to coincide with a small spike at EY.
- Relocking isn't going well - can't get past CHECK-IR
- FSS plots attached, because yesterday FSS TRANS PD DC was at 1.9, and now it's at 1.71
- I raised the Common gain by 1bB (the amount Georgia did yesterday), and tried relocking, and this did not help, still can't make it past CHECK-IR, keep looking
- checked the MC2 pitch alignment through the IM1 baffle, the total span is 330 to 720, and the current value is 550, so it's OK, keep looking
- 330, light visible on top right of aperture in baffle
- 720, light visible centered at the bottom fo the aperture in the baffle
- it's made it to PRMI, touching up alignment
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doing an initial alignment