Reports until 14:41, Monday 27 November 2023
H1 PSL
ryan.short@LIGO.ORG - posted 14:41, Monday 27 November 2023 (74433)
PSL FSS RefCav Remote Alignment Tweak

While the IFO was down this afternoon waiting for a large earthquake to pass, I took the opportunity to touch up the FSS RefCav alignment as it had drifted over the past few days (likely assosciated with the drop in temperatures over the weekend). With the ISS still ON and the IMC offline, I used the two picomotor-controlled mirrors in the FSS path to increase the signal on the TPD from 0.87V to 0.96V. The adjustment needed was mostly in pitch, as usual.

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