TITLE: 07/10 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:  After the lockloss halfway through the shift, the violin modes that have been worked on all week seem to have rang back up.  I worked successfully on several of them, but as has been the story, the worst offenders seem to be unresponsive to my damping efforts.
LOG:  See previous aLogs.

VerbalAlarms has been announcing "OMC DCPD saturation" every few seconds for ~10 minutes.  I have never received this notification without a lockloss following.  This is not the case today.  Not sure what to do about this.

TITLE: 07/09 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: 19mph Gusts, 15mph 5min avg
    Primary useism: 0.06 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:  Same state, different day.  Range around 50 MPc with higher order violin modes still rung up.  Lower Q fibers anyone?

TITLE: 07/09 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:

Most if the day spent trying o damp violin modes. Some successful, some not. Elevated noise in DARM between 20-80Hz has reduced the range back into the 50Mpc area. Handing off to Travis.
LOG:

19:18 The bucket looks funny and the a2l measurement is showing some weird spikey things.

16:15 oops. Lockloss, My fault. It seems that the ramp time on the mode9 filter bank I was trying to use wasn't set at 10 seconds as it was yesterday. It was 0. !!!!

• funny thing is, guardian set all these ramp times to 10 when re-locking. I don't know why it was different.

16:25 The MC Trans camera isn't showing me a spot at low power even though the REL camera looks normal for the IMC being locked and the StripTool verifies. Strange.

• Just noticed Cheryl's aLog about the camera

17:01 55Mpc

17:04 accepted an adjustment to FSS to controll oscillations at lockloss. Range at 54.1 Mpc

17:22 begin damping ITMY mode10 - FM8 off, FM6 on (997.89)

• got some good responsive damping from that effort - gain to -100

17:56 attempt at suppressing ITMY mode9 (994.897)

• also some good damping reponse from a gain increase from 10 to 100

19:04 still playing whack-a-mole in the violin section of this orchestra. If nothing else I'm getting damping practice.

• Range is oscillating between 53 and 54Mpc

TITLE: 07/09 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: 7mph Gusts, 4mph 5min avg
    Primary useism: 0.01 μm/s
    Secondary useism: 0.05 μm/s
QUICK SUMMARY:

TITLE: 07/09 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 at NLN with a range around 53 MPc.
LOG: Bubba and Kyle were on site around 2:30 UTC.

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.