Kiwamu, Patrick

Switching the ISI blends to 45 mHz made all the difference. Accepted the SDF differences for the blends. (See attached screenshots). No problems as soon as we did that.

There is a yellow box with 'TPD' written in it flashing in the PSL area of the Ops overview. Kiwamu looked at the medm code and it appears when H1:PSL-FSS_TPD_DC_OUTPUT < 0.9. It is currently around 0.86.

There is still a testpoint open on H1LSC.

TITLE: 11/29 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC

STATE Of H1: Lock acquisition
OUTGOING OPERATOR: Corey
QUICK SUMMARY: Kiwamu is here and has been working with Corey to help try to relock.
From the cameras:
The lights are off in the LVEA.
The lights are off in the PSL enclosure.
I can not tell if the lights are on or off at mid X and mid Y.
The lights are off at end X.
The lights are off at end Y.

The 0.03 - 0.1 Hz (earthquake) seismic band is between ~ 0.02 and 0.1 um/s.
The 0.1 - 0.3 Hz (microseism) seismic band is between ~ 0.2 and 0.8 um/s.

The winds are between ~ 0 and 5 mph.

The ISI blends are on Quite_90.

From pinging:
CDS WAP is off at the LVEA.
CDS WAP is on at mid X.
CDS WAP is on at mid Y.
CDS WAP is off at end X.
CDS WAP is off at end Y.

TITLE:  11/29 DAY Shift:  16:00-00:00UTC (08:00-16:00PDT), all times posted in UTC     

STATE of H1:  Lock Acquisition

Incoming Operator:  Patrick 

Support:  Kiwamu over the phone and then

Quick Summary:

  Rough shift which hopefully just related to issues with alignment (i.e. input pointing restoration?).  Right now we are waiting to see how H1 proceeds through lock aquisition.  Kiwamu has been here to help & is here to assist Patrick.

Shift Log:

• 14:30 arrived to cover part of the OWL shift 
• Continued Lock Acquisition
• Moved on to make another small change in input alignment & started Initial Alignment...but had issues (as noted earlier).
• ~21:15 Kiwamu arrives to help with H1
• During acquisition ran PRMI alignment at 22:32 (& it locked within a minute)
• Locking DRMI, but has been dropping shortly after...troubleshooting continues.

Attached is a plot of the last 24hrs covering restoration attempts for the Input Alignment.  Additionally there is a plot also looking at the last 30days.

A bit of a frustrating morning.

Since Alignment was decent enough to get through DRMI, I opted to look at Input Alignment again.  Patrick pretty much restored the IM4 Trans Pit/Yaw to where they should be (good thing!).  I thought the yaw could be moved a little more though.  I decided to move the IM3 in yaw a bit.  (Talked with Kiwamu and he felt this was good to try).

Since the input pointing was changed, I then started an Initial Alignment.  Unfortunately, I ran into issues at the beginning with ALS.  I could have sworn both ALSx & y were fine at first, but after waiting a few minutes for control signals to converge, I noticed ALSy was in a completely bad alignment state.  I spent way too much time trying to get an alignment back, could never get much above 0.5 & when I did WFS drove the alignment off.  After talking with Kiwamu, he suggested taking guardian to LOCKED NO SLOW NO WFS & tweak on ITMy & ITMy.  Finally, made some progress here and took the arms up to 1.05, went to INITIAL ALIGNMENT (which enables wfs), and Y-arm looked great....

...but then ALSx all of a sudden looked ugly.  It had a 0:0 mode, but it's power was oscillating from 0.4 -0.8 with a period of 6-7sec.  (on the Tidal strip tool, the ALS x & y REFL control signals are oscillating with this period.  useism doesn't look bad (under 90 percentile & there's no wind).  Asked whether the tidal issues Patrick had last night could be an issue here, but since we aren't fully locked it should not.  So moving on...

Oh, and within a few minutes, I lost ALSy again!!

SO:  Going to work on ALSx & then ALSy (probably with no WFS).  Kiwamu said another knob I can use is the ALS WFS GAIN for each arm, if needed.

OK, back at it.

Had a sick OWL shift operator last night.  Although Nutsinee offered to accept a call to come in to cover the shift last minute, Mike & I opted to not call someone in at short notice with freezing condition.  At the time, H1 was in the middle of a long lock, but unfortunately H1 dropped out of lock before midnight.  Patrick fought valiantly and stayed a bit beyond his shift (see his alogs for the play-by-play); I talked with him before going to bed & opted it would be better to get sleep before coming in early.  

Walked in at 14:35UTC (6:35am), to H1 trying to lock DRMI, and it did within a few minutes.  Right now it is stuck trying to go to REDUCE CARM OFFSET, but there is a Guardian message of:  NO IR in arms!!

I believe I have moved IM1 and IM2 to there approximate positions before the HAM2 ISI trip (alog 23777). I moved IM1 in PITCH from 800 to 592. I moved IM2 in PITCH from 17980 to 17232.

I started an initial alignment. I got to the point where both ALS_XARM and ALS_YARM were at the INITIAL_ALIGNMENT state and was waiting for the ASC convergence. However when I got to GREEN_WFS_OFFLOADED the Y arm dropped in power. I am now struggling to bring it back.