I was returning a violin mode filter to the state it was previously in when we lost lock.  Not sure why this would cause a lockloss.

TITLE: 07/08 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Ed
CURRENT ENVIRONMENT:
    Wind: 11mph Gusts, 9mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:  Still working on damping violin modes. 

TITLE: 07/08 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
INCOMING OPERATOR: Travis
SHIFT SUMMARY:

• H1 locked for 17hrs @ 52-3Mpc.
• Order of the Day:damping violin modes. I chose ETMX mode4 and ITMY mode9 997.719Hz. I managed to damp them both to some extent.
  • Ending FIlter Settings:
    • ETMX Mode4 - FM1,FM3,-400.98 gain                                   
    • ITMX Mode9 - FM2, FM10, -500 gain

LOG:

18:15 switched BP filters on IY mode9 filter. FM8 turned off and FM10 turned on to attempt damping at 997.719Hz

18:34 Increased the gain from 10 to 15

19:30 after a while at a gain of 20 i decided that I wasn't affecting anything so I put everything back to original state I found it in.

20:00 Two tour groups into the control room.

20:15 decided to try the same freq again. After further reading I decided to try higher gains while monitoring DAC outputs.

20:20 up to 200 Gain going to try switching phase sign from - to + (60).

20:50 flipped sine back and am trying a more aggressive damping of the ETMX 505.805Hz fundamental (mode4). I saw immediate results in the f2! Gonna try some more gain. I still have headroom in the DAC.

21:37 Significant damping on the 997.719 mode. got a little upturn on the range to almost 53Mpc

21:46 putting the hammer down on the ETMX mode 4 some more. Original gain was -55.988 - now up to -200.98...eventually up to -400.98

21:57 1478.66Hz seems to be the largest f3 offender. I don't think it has a filter

H1 has a number of alignment changes pre-5.8M to post-5.8M Montana earthquake.

IMC optic alignment changes are listed here, in urad and beam position change in mm:

• these changes can reflect both a beam pointing change from the PSL and IMC optic alignment changes
• the IMC Trans camera no longer has the same image of the beam, which reflects the beam position change coming out of the IMC
• this beam change is then transmitted through the IMs to the rest of the H1 optics

IM changes worth noting: 

• I believe IMs were set back to the old nominal values, following my outdated instructions, however...
• IMs have been allowed to drift, so it's appropriate to return to pre-5.8M values
• I did communicate this, and thought the IMs were reset, but this check makes that unclear
• the pre-5.8M with unlocked H1, and IMC locked, time is July 4, 22:30:00UTC
• values used (and GPS times) are in the attached pdf file

other optics/qpds worth noting:

model restarts logged for Fri 07/Jul/2017 No restarts reported

model restarts logged for Thu 06/Jul/2017
2017_07_06 08:24 h1iopsusex
2017_07_06 08:24 h1susetmx
2017_07_06 08:24 h1susetmxpi
2017_07_06 08:24 h1sustmsx

DAC zeroing issue, restart of IOP model to clear this

model restarts logged for Wed 05/Jul/2017
2017_07_05 10:36 h1alsey
2017_07_05 10:36 h1caley
2017_07_05 10:36 h1hpietmy
2017_07_05 10:36 h1iopiscey
2017_07_05 10:36 h1iopseiey
2017_07_05 10:36 h1iscey
2017_07_05 10:36 h1pemey
2017_07_05 10:38 h1iopsusey
2017_07_05 10:38 h1isietmy
2017_07_05 10:38 h1susetmy
2017_07_05 10:38 h1susetmypi
2017_07_05 10:38 h1sustmsy
2017_07_05 10:41 h1iopsusauxey
2017_07_05 10:41 h1susauxey
2017_07_05 12:30 h1iopsush2b
2017_07_05 12:30 h1susim

EY glitch required a restart of all models. Unknown issue with h1sush2b required restart of its models.

model restarts logged for Tue 04/Jul/2017 - Wed 28/Jun/2017 No restarts reported

model restarts logged for Tue 27/Jun/2017
2017_06_27 09:46 h1broadcast0
2017_06_27 09:46 h1dc0
2017_06_27 09:46 h1fw0
2017_06_27 09:46 h1fw1
2017_06_27 09:46 h1fw2
2017_06_27 09:46 h1nds0
2017_06_27 09:46 h1nds1
2017_06_27 09:46 h1tw1

Maintenance day, DAQ restart for BRS vacuum channels and safety system inclusion.

model restarts logged for Mon 26/Jun/2017 - Fri 23/Jun/2017 No restarts reported

a2l measurement looks like this (see image). YAW looks a little screwy so anything I can do to put things back aligned seems to me to be a good idea.

TITLE: 07/08 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Jeff
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 3mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:

H1 violin modes still damping. Spoke with Jeff and Keita about target parameter of ~55-60Mpc to consider going back into Observation mode. There are still a couple of funny bumps in DARM. A cluster of them just below fundamental violin mode and another that seems to be diminishing just below f2 violins. F2 violins are still peaking at, and slightly above, 10e-15. I'm not sure at what point effective damping on these can be done. I will continue to monitor.

   IFO locked for past 5 hours. The ring down of the violin modes continues. There was a smallish EQ around 08:00 (01:00PT) which did not appear to reexcite the violin modes. Range has been slowly improving and is up around 52Mpc. No issues to report.   

TITLE: 07/08 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Earthquake
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:  Locked for most of the shift.  Worked on damping violin modes, but didn't make much headway.  We have been around 50 MPc tonight.  Ran IA after the one lockloss, but it didn't improve anything.
LOG:  None

Due to me attempting to damp violin modes.

Have been attempting to damp many violin modes, but have had success on only a couple.  The largest ones that are giving us the most trouble seem to be unresponsive.

One sensor on the BS looks a little elevated, but hasn't reached the notification threshold. Otherwise all cps look fine.

TITLE: 07/07 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Earthquake
OUTGOING OPERATOR: Jim
CURRENT ENVIRONMENT:
    Wind: 18mph Gusts, 15mph 5min avg
    Primary useism: 0.05 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:  The battle with violin modes continues.  They shall be conquered.

TITLE: 07/07 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Earthquake
INCOMING OPERATOR: Travis
SHIFT SUMMARY: VIOLINS
LOG:
Spent the whole day damping violin modes. Locking has been relatively easy, but whack-a-mole is getting tedious.

For the most part, all look to have been operating within acceptable parameters until thje Montana EQ trouble between the 5th and the 6th. Curious that ETMY PIT seems to have been on a downward trend for the past week, however.

Trends reflect the change in operating current of the pump light. Weird chiller pressures about 5 days ago are a bit strange but don't seem to be of any consequence. Everything else looks normal.