Everything looks normal. Current increase to diodes is evident.
Posted latest plot of BRS trends. BRS-X drift has been slowly upward, and is hovering around 10000. BRS-Y is drifting downward and is slightly below -10000.
TITLE: 07/31 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 54Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY: locked with steady range
LOG:
TITLE: 07/30 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC STATE of H1: Observing at 54Mpc INCOMING OPERATOR: Cheryl SHIFT SUMMARY: H1 was locked at NLN and Sheila was running a measurement when I arrived. If I understand correctly we lost lock when Sheila attempted to transition from ETMY to ETMX. Lost lock while locking arms on green and upon relocking arms on green the Y arm transmission had dropped. Moved TMSY to recover it. Later lost lock between ROLL_MODE_DAMPING and DC_READOUT_TRANSITION when the ETMX SUS WD tripped. I think Sheila said it might have been due to violins, so upon relocking we stopped at ENGAGE_SOFT_LOOPS to damp them. Made it to NLN and set to observing. Damped PI modes 27 and 28. LOG: 23:25 UTC Lock loss. Commissioning. Relocking. Had to move TMSY to increase green transmission. ETMX RMS WD tripped between ROLL_MODE_DAMPING and DC_READOUT_TRANSITION. Lock loss. Relocking. 00:16 UTC Stopping at ENGAGE_SOFT_LOOPS. Violin mode damping. 02:17 UTC Observing.
Set to observing at 02:17 UTC. Accepted attached SDF difference.
I made a few more attempts to transition to ETMX this afternoon, I am not sure why this is not working. The attached screenshot shows the OLTF comparison between a time when we were locked on ETMY and when we were locked on 75% ETMX and 25% ETMY, using the settings in the attached text file (ETMX L3 DRIVEALING=-26, ETMX L3 LOCK=1 ETMY L3 LOCK L = 0.31)
After transitioning completely the interferometer broke lock, I am not sure why.
TITLE: 07/30 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Commissioning
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
Wind: 13mph Gusts, 10mph 5min avg
Primary useism: 0.04 μm/s
Secondary useism: 0.07 μm/s
QUICK SUMMARY: Locked at NLN. Sheila is running a measurement.
Shift Summary: Quiet first half of the Day shift in Observing mode. Wind, weather, and seismic all behaving. At 20:02 (13:02) dropped out of Observing – so Sheila could do Commissioning work. Second half of shift spent commissioning, relocking, damping PI Mode-28, and watching the Violin Modes.
All green and clear at this time. The Violin Modes don't seem to be too bad, and the couple (ITMY Mode-4 and Mode-7) that are elevated are coming down on their own accord. Continue triple-coincident observing.
The Alarm Handler computer was 6 minutes slow compared to the UTC clock. The OS was complaining about no startup memory. Power cycled the Alarm Handler computer.
TITLE: 07/30 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 54Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:
Another quiet shift. H1 lock approaching 11hrs with range around the usual 54Mpc.
H1 humming w/ a 7+hr lock and range around 55Mpc.
Road through an EQ around 8:09utc (5.3 Uganda quake).
TITLE: 07/30 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 52Mpc
OUTGOING OPERATOR: Patrick
CURRENT ENVIRONMENT:
Wind: 10mph Gusts, 8mph 5min avg
Primary useism: 0.01 μm/s
Secondary useism: 0.08 μm/s
Nice & quiet with useism at it's continued low from last few nights with little winds. The moonset on the shoulder of Rattlesnake just before the strike of midnight was beautiful.
QUICK SUMMARY:
H1 locked for 3.5hrs w/ a range just under 55Mpc. DARM shows visible higher order harmonics of the violin fundamental (as seen last night), but since everything else looks ok, will not proactively address violins.
~7:22utc While Patrick & I were chatting happened to notice glitches on DARM, and while typing this write up, it's interesting to see a few minutes of glitches on the h(t) triggers tool. Basicaly glitches start around 150Hz and sweep down to about 50Hz. (snapshot attached).
TITLE: 07/29 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC STATE of H1: Observing at 53Mpc INCOMING OPERATOR: Corey SHIFT SUMMARY: Spent about 2.5 hours damping violin modes at NLN before losing lock and having the fundamentals ring back up again. I decided it might be best to go directly to observing after getting back to NLN despite the violin modes. LOG: 23:37 UTC Rick, Peter and Jian in staging building working on PMC 23:42 UTC Lock loss Guardian lost connection to a channel in the middle of DRMI_ASC_OFFLOAD. Hit stop and then exec. PRC1, SRC1 and SRC2 Yaw started diverging. Sheila recovered them. 00:36 UTC NLN 00:38 UTC Rick, Peter and Jian leaving 03:07 UTC Lock loss (was sitting at NLN damping violin modes) 03:34 UTC Stuck at ENGAGE_SOFT_LOOPS. Soft loops not converging? OMC also not locking on the right mode. 03:35 UTC Requested ENGAGE_SOFT_LOOPS. Lock loss. 04:02 UTC NLN. Fundamental violin modes rung back up. Setting to observing. 04:18 UTC PI mode 27 rang up and damped on its own.
I used Conlog to find the violin mode damping filter settings at July 6 2017 06:00:00 UTC. According to the summary pages we were locked and in observing at that time. According to the USGS the 5.8 Montana earthquake occurred July 6 2017 06:30:17 UTC. I have double checked the gains and degrees of freedom. It might be worth double checking the filters, as these were less straightforward to find. ETMX Filters, Gain, DOF Mode 1: 505.587 +60deg 100dB, +5, P Mode 2: 505.707 +60deg 100dB, 0, P Mode 3: 505.707-505.710 100dB, +10, P Mode 4: 505.805 +60deg 100dB, -89.9315, P Mode 5: 506.922 100dB, +3, P Mode 6: 507.159-507.194 +60deg 100dB 'N507.391,506.922', -100, P Mode 7: 507.194New +60deg 100dB, +15, P Mode 8: 507.391 100dB, +5, P Mode 9: -60deg 100dB 1004.537, +1, P Mode 10: BB1003.6-1003.9 -60deg 100dB, +3, P ETMY Filters, Gain, DOF Mode 1: 100dB 1009.44-1009.49, +15, P Mode 2: 508.010 100dB, -40, P Mode 3: 508.146New 100dB, -20, P Mode 4: 508.206New +60deg 100dB, -20, P Mode 5: 508.220 +60deg 100dB, -40, P Mode 6: 508.289N +60deg 100dB +12deg, +500, P Mode 7: 508.585 +60deg 100dB, -60, P Mode 8: 508.661 +60deg 100dB, -500, P Mode 9: -60deg 100dB 1009.02, 0, P Mode 10: 100dB +30deg5k 4735, 0, P ITMX Filters, Gain, DOF Mode 1: 500.05 +60deg 100dB, +50, P Mode 2: 500.212 100dB, +100, P Mode 3: 501.091 -60deg 100dB, +100, P Mode 4: 501.208 100dB, +10, P Mode 5: 501.256 100dB, +100, P Mode 6: 501.452 100dB, +100, P Mode 7: 502.621 240dB, +50, P Mode 8: 502.744 +60deg 240dB, +10, P Mode 9: -60deg 100dB 992.43, -10, P Mode 10: -60deg 100dB 994.277, -10, P ITMY Filters, Gain, DOF Mode 1: 501.606 -60deg 100dB, +20, P Mode 2: 501.680 -60deg 100dB, +200, P Mode 3: 501.749 100dB, +200, P Mode 4: 501.811 100dB N501.749, -100, P Mode 5: 503.007 +60deg 100dB, +100, P Mode 6: 503.12 -60deg 100dB, -20, P Mode 7: 504.804 +60deg 100dB, +500, P Mode 8: 504.875 -60deg 100dB, -50, P Mode 9: -60deg 100dB 994.646, +10, P Mode 10: -60deg 100dB 998.81, -10, P
It seems that the following changes in violin mode damping have occurred from the observing stretch immediately before the Montana earthquake to the current observing stretch that started July 31 2017 02:16:53 UTC: I think the angle labeled 310 deg on G1602364-v1 should be labeled 300 deg? I have attached screenshots of the current filter mode settings so this can be more easily double checked. ETMX Mode 4: -G +60 P -> +G -60 L,P,Y (240 deg P -> 300 deg L,P,Y) Mode 7: +G +60 P -> -G 0 Y (60 deg P -> 180 deg Y) Mode 10: -60deg -> -60deg1k ETMY Mode 5: -G +60 P -> +G +60 L (240 deg P -> 60 deg L) ITMX Mode 1: +G +60 -> +G 0 (60 deg -> 0 deg) Mode 3: P -> L ITMY Mode 3: +G 0 P -> -G 0 Y (0 deg P -> 180 deg Y) Mode 4: -G 0 -> -G +60 (180 deg -> 240 deg) Mode 6: -G -60 -> +G +60 (120 deg -> 60 deg) Mode 9: changed filter from 994.646 to 991.75 Mode 10: -G -60 P -> +G -60 Y (120 deg P -> 300 deg Y)
Set to observing at 04:08 UTC. The violin modes are rung up again. I want to see what they will do on their own, so setting to observing.
Found the attached SDF differences at NLN. Reverting. This time did not skip VIOLIN_MODE_DAMPING_1.
