Reports until 10:38, Thursday 07 June 2018
H1 PSL
jason.oberling@LIGO.ORG - posted 10:38, Thursday 07 June 2018 (42381)
PSL PMC Beam Alignment Tweaked

E. Merilh, J. Oberling

We tweaked the beam alignment into the PMC this morning (done via picomotors from the control room).  When we started the PMC was transmitting ~19 W, upon finishing the PMC was transmitting ~39.8 W.  This is not quite at the 42 W we were transmitting after Peter and I installed the ISS AOM; this may be due to the temperature being ~10 °F hotter than normal, will monitor the PMC trans once PSL temps return to normal.

After the tweak we turned the ISS ON.  The Reference Signal was set to -1.70V, which gives a 1.5% diffracted power percentage.