As was reported in  alog 42311, last week ALS path power on the ISCT1 was found to be much lower than it used to. Suspicion was that the power was throttled on the PSL table intentionally, which turned out to be the case. We went to the PSL room today to increase the power.

Before we started working, ALS path power on the PSL table was about 180mW. Rick adjusted HWP right after the PMC to minimize the rejected beam on the polarizer, and the power in the ALS path increased to ~900mW.

Main path power after EOM was 39.5W and H1:PSL-PWR_PMC_TRANS_OUTPUT was displaying 42.7 W (and H1:PSL-PWR_PMC_REFL_OUTPUT 18.9W, which is pretty bad BTW) , which we can use to calibrate things later. For now PSL rotator calibration as well as H1:PSL-EOM_A_DC_POWERMON calibration are both totally bogus.

After this we've done many things including but not limited to bull's eye reinstallation, and somehow the alignment into PMC got even worse (right now PMC transmission is only 20W). Jason says we need to realign into PMC.