TITLE: 07/11 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Earthquake
INCOMING OPERATOR: TJ
SHIFT SUMMARY: Peter and Jason brought the PSL back. I ran an initial alignment and made it to NLN. Sat at NLN trying to damp 507.194 Hz and 1463.09 Hz violin modes. I think the later was starting to come down after setting ITMX mode 3 to only FM4 and FM5 and a gain of 100. I think I might have made the former worse by playing around with EMTX mode 6 and 7. Eventually lost lock, possibly changing gain of ETMX mode 7, but I had done this many times before. Upon starting INCREASE_POWER during relocking I started getting constant OMC DCPD saturations and a whole series of peaks in an elevated DARM. Eventually the lock broke at LOWNOISE_ESD_ETMY. Relocked again and it happened again but I stopped the guardian at the completion of INCREASE_POWER. Sitting there now with constant OMC DCPD saturations and same elevated DARM. Have had to damp a whole series of PI modes and now riding through a 6.6 mag earthquake in South New Zealand.
LOG:

23:10 UTC Robert to LVEA to setup equipment for tomorrow (Tuesday)
23:42 UTC Cheryl out of optics lab
00:16 UTC Robert and Pep to end Y
00:27 UTC GRB
01:14 UTC Robert and Pep done
01:28 UTC Restarted video4
01:36 UTC Peter and Jason out of PSL enclosure. Report bad pressure regulator and no immediately available spare. Managed to get flow rate back to what it was before the trip, but may not last.
01:38 UTC Starting to relock
01:54 UTC Starting initial alignment
02:35 UTC Initial alignment done
03:28 UTC NLN
03:40 UTC Running a2l
03:45 UTC a2l done
03:48 UTC Changed filters and gain for ITMX mode 3
03:50 UTC Damped PI mode 28
03:53 UTC Changing gain for ITMX mode 3 to 10
04:18 UTC Changed gain for ITMX mode 3 to 15
04:20 UTC Changed gain for ITMX mode 3 to 50
04:22 UTC Changed gain for ITMX mode 3 to 100
04:32 UTC Changed gain for ETMX mode 7 from 15 to 20
04:32 UTC Changed gain for ETMX mode 7 to 50. Jump in DARM.
04:38 UTC Changed gain for ETMX mode 7 back to 15
04:55 UTC Changed gain for ETMX mode 7 to 0
05:08 UTC Changed gain for ETMX mode 7 to -100
05:10 UTC Changed gain for ETMX mode 7 to 0
05:15 UTC Changed gain for ETMX mode 6 from -100 to -80
05:16 UTC Changed gain for ETMX mode 6 to 0
05:17 UTC Changed gain for ETMX mode 6 to -150
05:18 UTC Changed gain for ETMX mode 7 to 15
05:22 UTC Changed gain for ETMX mode 6 to -100
05:25 UTC Changed gain for EMTX mode 6 and 7 to 0
05:26 UTC Changed gain for EMTX mode 6 to -100 and 7 to 15
05:32 UTC Reverted ETMX SUS SDF differences -> jump up in ETMX mode 5 rms mon, set back, jumped up again
05:40 UTC Changed gain for ETMX mode 7 to 150
05:45 UTC Changed gain for ETMX mode 7 to 15. Lock loss

Constant OMC DCPD saturations after INCREASE_POWER. Huge series of peaks in DARM
06:14 UTC Lock loss from LOWNOISE_ESD_ETMY with constant OMC PD saturations
06:42 UTC Going to increase power. OMC DCPD saturations again. Stopping at completion of INCREASE_POWER.
06:54 UTC Damped PI mode 27 and 19 by changing sign of gain and then had to change it back.
06:59 UTC Damped PI mode 28
07:01 UTC Damped PI mode 27 and 19 again. This time needed change of phase.
07:04 UTC Damped PI mode 28 and 20.
Damped more PI modes.