Reports until 14:36, Thursday 04 January 2018
H1 IOO
jenne.driggers@LIGO.ORG - posted 14:36, Thursday 04 January 2018 (39988)
IMC Trans path aligned

[TVo, Jenne, Cheryl]

The IMC is still flashing nicely from yesterday, so we left the MC mirrors alone and worked on aligning the IMC Trans path.  We moved the trans path periscope and all of the optical elements in the path toward the PSL enclosure by 3 holes, so all of the path lengths are roughly preserved. 

After this, Cheryl removed the HWP that was in the PSL enclosure to rotate us to the wrong polarization (to make IMC flashes easier to see).  So, now we're at the correct polarization, but we're still working on getting the alignment back, since that was a pretty thick optical element.