Per JimW's suggestion, I had a look at our beam spot positions on the test masses for now (last A2L measurement from this morning, before maintenence) versus a time on 17 June 2017 (16 June local) right after Sheila moved spots to drastically improve our range. 

In the attached plot, the green squares are the old good times, and red circles are the latest measurement.  Listed in the title for each optic is the total distance between the old and current spots.  You can see that ETMY is basically in exactly the same place, both ITMs have moved a little bit, but ETMX has moved a lot. 

So, one thing we should try today is moving the POP QPD and SOFT offsets such that we get closer to these old spots, and see if that improves our range.

I have updated GDS to version 2.18.0 (along with nds2 and gstlal packages dependent on gds) on the DMT test computer, h1dmt3, for further testing. This should have no impact on the control room or production running of the DMT.

The time of the 3 slow control machines had been off sync for some time, variation fluctuate from 1 sec to 15+ seconds between them, due to that problem I research and downloaded a third party software called NetTime, this tool allow us to resync all windows clock simultaneously with our local NTP server.

  

yesterday's change which unmonitored the CW GAIN and TRAMP channels was removed, we are once again monitoring these channels.

WP7066 Kiwamu, Dave:

a new h1asc model was installed, replacing RF90 with RF72. The DAQ was restarted soon afterwards.

DAQ Changes:

Fast Channels Added (2048Hz)

+: fast channel H1:ASC-AS_A_RF72_I_PIT_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_A_RF72_I_SUM_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_A_RF72_I_YAW_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_A_RF72_Q_PIT_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_A_RF72_Q_SUM_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_A_RF72_Q_YAW_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_B_RF72_I_PIT_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_B_RF72_I_SUM_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_B_RF72_I_YAW_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_B_RF72_Q_PIT_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_B_RF72_Q_SUM_OUT_DQ added to the DAQ
+: fast channel H1:ASC-AS_B_RF72_Q_YAW_OUT_DQ added to the DAQ

Fast Channels Removed (2048Hz)

-: fast channel H1:ASC-AS_A_RF90_PIT_OUT_DQ removed from DAQ
-: fast channel H1:ASC-AS_A_RF90_YAW_OUT_DQ removed from DAQ
-: fast channel H1:ASC-AS_B_RF90_PIT_OUT_DQ removed from DAQ
-: fast channel H1:ASC-AS_B_RF90_YAW_OUT_DQ removed from DAQ

Slow Channel Stats: 1060 channels Added, 356 channels Removed

TITLE: 07/11 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    Wind: 6mph Gusts, 5mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:

Maintenance Day

LASER is OFF. LASER crew is in the enclosure.

TITLE: 07/11 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Earthquake
INCOMING OPERATOR: Ed
SHIFT SUMMARY: 6.6M earthaquake at the start of my shift left us waiting for a few hours, then some trouble keeping the mode cleaner locked after initial alignment, followed by ETMX violin mode 507.194hz ringing up. With +60 phase and +0.25 gain it seems to be stable(ish) at an RMS of 7. The OMC trans camera has a lot of movement, it seems to really be struggling, and the OMC_LOCK Guardian will not get to READY_FOR_HANDOFF presumably from this high violin mode.

LOG:

• 07:56 Lock loss, 6.6M earthquake south of New Zealand.
• 12:54 Restarted DIAG_MAIN
• 14:43 Peter, Jeff B to PSL to start maintenance
• 14:58 Lock loss. starting maintenance.

Attached are plots of the flow rates through heads [1,4] for the last 12 hours and the last hour.  Apart
from the initial restart period, the flow rates more or less settled down and looked reasonably clean.
However in the last hour they took a downturn back to rates similar to when the chiller was restarted
last night.  The crystal chiller flow rate appears constant at this point in time, at least within the
minute trend data.

    The crystal chiller flow rate has a resolution of about -/+ 0.1 lpm.  The observed decrease in the
flow rate to the heads is ~ -0.025 lpm.  So in retrospect, perhaps the observed decrease in the head flow
rates is due to a reduced flow from the crystal chiller.

After the 6.6M New Zealand quake I ran an initial alignment with no issues, but then it would lose lock very randomly. I couldn't make it past DRMI for a long time, with the FSS oscillating often on lock losses.

I have finally made it to DC_READOUT_TRANSITION but the 507.194hz ETMX mode has been ringing up with the current settings from Guardian. Changing the phase from +60 to -60 started to help, but now it seems that to have flattened out. There are no +/-30deg filters in that bank so I'm pretty limited, but a smaller positive gain (~5) with -60 gain seems to be my best option.

TITLE: 07/11 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Patrick
CURRENT ENVIRONMENT:
    Wind: 8mph Gusts, 6mph 5min avg
    Primary useism: 1.74 μm/s
    Secondary useism: 0.10 μm/s
QUICK SUMMARY: When I got here Patrick was battling some PI's while sitting at INCREASE_POWER. DCPD saturations were continuous and DARM looked bad. With neither of us finding the problem, seismon reported an incoming earthquake that just broke the lock.

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.

Finished and sitting at INCREASE_POWER. Second time in a row this happened. First time lost lock trying to go further.

Made it to NLN at 03:28 UTC. Current range around 49 MPc. Snapshot of DARM spectrum attached.

J. Kissel, Operators

Where we left off on Friday:
- We were battling 2 (actually 4) modes, 
 ETMY:    1008.4502 & 1008.4938  Hz   (Mode separation: 0.0436 Hz)
 Unknown: 1463.0974 & 1463.1005  Hz   (Mode separation: 0.00309 Hz)
For the the later unknown modes, I tried the following:
  - Driving ITMX or ITMY, and even Both Simultaneously and for each of those configurations:
    - Multiple bandwidth sizes
    - Driving in Pitch, Length, and Yaw
    - Gains from very little to about to saturate the DAC
    - The usual phase rotation game
I attach a StripTool that shows the control signals of the damping filters all I was ever able to get was the beatnote between the two frequencies, with a period of 5.3 minutes. That extra long beat-note envelope makes it extra time-consuming to try new configurations, because one has to wait for one, if not several peaks of the envelope to assess whether a positive (or negative) change has been made.

- We also has somehow managed to ring up > 1.5 kHz harmonics, especially some 6 kHz mode

Where we pick-up today:
See attached spectra.
These same modes mentioned about continue to dominate the RMS, along with another set of modes (1475.2520 & 1475.0984 Hz) that has rung up again over the weekend, where the latter of the two (1475.0984 Hz) is also one for which we've not yet identified a filter and/or settings.

We're otherwise keeping the Violin Mode Table as up-to-date as possible with any success we have.

• 03:52:44UTC - H1 out of Observe
• SDF shows that H1:CAL-PINJX_CW_GAIN should be 1, but was at 0
• channel cleared SDF by going back to 1
• 03:55:45UTC - H1 back in Observe
• not sure if this is a known thing, a new thing, or if possibly someone (not on site) might soon be claiming this change