Naoki, Sheila

Summary:  We have repeated the test from 73400, with our higher level of squeezing after the crystal move, and with the ASC off for squeezing angles other than squeezing.  This seems to generally reproduce the results in that alog, convincing us that most of the rotation we are seeing is from the mode matching change not an alignment shift.  

We have saved references in userapps/sqz/h1/Templates/dtt/DARM/PSAMS_tests_Oct202023.xml.  This is a copy of PSAMS_tests_Oct112023.xml, with the references saved there and shown in alog 73400  The times written below are minimum times, for many of these references there is actually more time.  

times (PSAMs 200/200):

• no sqz 10/20/2023 20:19-20:32 UTC (large glitch at around 20:22, starting at 20:23) (reference 10)
• after some ASC troubles and temperature adjustment, resetting AS42, start FDS time at 21:19:33 300 seconds demod 162.95 (ref 11)
• turned off AS42, and FC ASC, anti sqz 21:33:34 300 seconds demod 228.64 (ref 12)
• + mid sqz 21:43:16 300 seconds demod 193.56 (ref 13) (until 21:50:50, big glitch near end of time)
• - mid sqz 21:53:17-21:59:57 300 seconds demod 30.48 (ref 14)

set sqz angle back to sqz, turned AS42 and FC ASC, set PSAMs to 120/120 with 30 second ramp

times (PSAMS 120/120):

• sqz 22:07:33 300 seconds demod 162.95 (ref 15)  Note: while Naoki was tuning the sqz angle here, he found that for a few degrees different demod phase the high frequency squeezing could be better than what is shown here, but the 400Hz squeezing was worse.  Here we are just using the same demod phase as for 200/200 psams, but this isn't the best high frequency demod phase.  
• turned off ASC for AS 42 and FC
• asqz 22:17:33-22:23:30 360 seconds demod 228.64 (ref 16) (a big glitch around 22:21:30) (ref 16)
• + mid sqz 22:24:27 300 seconds demod angle 193.56 (ref 17)
• - mid sqz 22:33:33 300 seconds demod angle 30.48 (ref 18)