TITLE: 04/04 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
INCOMING OPERATOR: Jim
SHIFT SUMMARY: X arm is locked on IR. ALS is shuttered. ITMX optical lever damping is off. Travis said they would turn ITMX optical lever off. Input power is at 19.6 W. PCAL team is taking images of ITMX with this configuration. We are riding through the tail end of a 5.5 magnitude earthquake in Alaska.
LOG:

Apollo is at mid Y
15:00 UTC Took IFO down. Peter to LVEA to transition.
15:00 UTC Jeff to LVEA, measurements and dust monitors.
15:00 UTC Travis to LVEA.
15:00 UTC Krishna to end Y. Set to SC_OFF_NOBRSXY.
15:07 UTC Balers on X arm. Apollo and Chris back from end Y.
15:14 UTC Peter back.
15:27 UTC Filiberto looking at PEM chassis in CER.
15:30 UTC Rotorooter and LN2 through gate.
15:35 UTC Karen and Christina to end stations.
15:53 UTC Jason and Ed to end Y to swap optical lever laser.
15:58 UTC Pest control on site.
15:58 UTC Cintos through gate.
16:00 UTC Chandra back, gate valves closed.
16:01 UTC GRB. Ignored.
16:13 UTC Chris taking pest control to LVEA.
16:21 UTC Nutsinee to LVEA to work on HWS X camera install
16:24 UTC Chris taking pest control down Y arm.
16:28 UTC Apollo to end X mechanical room. Bubba to LVEA.
16:30 UTC Jeff B. done in LVEA. Heading to both end station VEAs for dust monitor maintenance.
16:37 UTC Dick G. to CER with signal analyzer to chase RF noise.
16:43 UTC Bubba back from LVEA.
16:44 UTC Chris and pest control moving from Y arm to X arm.
16:51 UTC Krishna done.
16:52 UTC Jason and Ed done.

Restarted all nuc computers in CR per Carlo's request.

17:36 UTC Jeff B. done
17:40 UTC Filiberto done in CER.
17:44 UTC Karen leaving end Y.
18:01 UTC Karen to LVEA
18:22 UTC Jeff B. to LVEA to take pictures
18:27 UTC Tumbleweed baling in front of OSB
18:30 UTC Set ISI config to windy
18:34 UTC Pest control done on site
18:42 UTC TCS Y chiller flow is low verbal alarm
19:47 UTC Rick, Travis and crew out for lunch.
19:48 UTC Nutsinee out. Not completing remaining work (no laser hazard)
19:48 UTC Starting attempt to lock X arm on green
19:54 UTC Peter: PSL unshuttered. TCS back on.
20:12 UTC Dick G. done
20:40 UTC Rick, Travis, Carl to LVEA to take pictures with new ITMX camera
20:44 UTC Peter to join PCAL team at ITMX.
21:32 UTC Dave WP 6547
21:35 UTC Nutsinee to LVEA to take picture
21:56 UTC Nutsinee back
22:11 UTC X arm locked on IR
22:13 UTC PCAL crew to LVEA to take next set of pictures.

Closed ALS shutters. Turned off optical lever damping on ITMX. Increased power to 19.5 W.

5.5 Adak, Alaska

Was it reported by Terramon, USGS, SEISMON? Yes, Yes, No

Magnitude (according to Terramon, USGS, SEISMON): 5.5, 5.5, NA

Location: 69km SSE of Adak, Alaska; 51.269°N   176.440°W

Starting time of event (ie. when BLRMS started to increase on DMT on the wall): ~22:16 UTC

Lock status? L1 remained lock. H1 out of lock for maintenance.

EQ reported by Terramon BEFORE it actually arrived? Not sure

Fil, Richard, Nutsinee

Quick conclusion: The camera and the pick-off beam splitter is in place, but not aligned.

Details:  First I swapped the camera fiber cable back so h1hwsmsr can stream images from HWSX camera while I install the BS.

While looking at the stream images, I positioned the BS in such a way that doesn't cause a significant change to the stream images (I didn't take the HW plate off).

Then I installed the camera (screwed on to the table). Because the gate valves were close for the Pcal camera installation, I didn't have the green light to do the alignment.

Richard got the network streaming to work. Now we can look at what the GigE sees though CDS >> Digital Video Cameras. There's nothing there.

The alignment will have to wait until a next opportunity now that green and the IR are back (LVEA is still laser safe).

The camera is left powered on, connected to the Ethernet cable, and CCD cap off.

I re-ran the python script, retook the reference centroids. From 1175379652 GPS time the data written to /data/H1/ITMX_HWS comes from HWSX camera.

Specification

Camera: BASLER scA1400-17gc

Beam Splitter: Thorlabs BSN17 2"diameter 90:10 UVFS BS Plate, 700-110nm t=8mm

WP6547, ECR-E1700111

John Z, Dave:

The DAQ broadcaster was restarted after 7 additional slow channels were added (H1:OMC-BLRMS_32_BAND{1,7}_RMS_OUTMON)

Once again we noticed that after the broadcaster restart, a portion of the seismic fom data went missing (see attached). This was also observed last Tuesday.

https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=35155

Jenne D., Patrick T.

We suspect that the ITMX green camera got moved during the PCAL camera installation today. Initial alignment for green arm was not working right. We closed the initial alignment loops for green WFS and aligned ITMX by hand to maximize the transmitted power. We then set the camera nominal position such that the output was zero at that place.

Attached is a screen shot of the nominal reference position before our change.

   Inspection of the inline filters in the PSL Chiller Room showed no contamination, discoloration, or debris. See attached photos. The inline filters in the PSL enclosure were inspected two weeks ago; no problems were noted. Closing FAMIS #8295 

   Did a zero count and flow rate test on all pump-less dust monitors in the CS and at both end stations. The PSL monitors were check a couple of week ago. All the monitors are running well whit no problems or issues to report. Closing FAMIS task # 7314. 

ISI config is back to WINDY. Gate valves are back open. PSL is unshuttered. TCS lasers are back on. IMC is locked. X and Y arms are locked on green. PCAL team is working on taking pictures.

WP 6559

PEM group reported possible issues with some of the PEM "Test" channels in one of the AA chassis in the CER (PEM/OAF Rack slot U7 & U6). Channels 23-32 were all verified to be working.

F. Clara, R. McCarthy

Soft closed GV 5,7 at 15:25 UTC and re-opened at 19:00 UTC during viewport pcal camera installation. We let the accumulated gas load in gate annuli  be burped in.

Took the opportunity to train a couple operators on stroking pneumatic valves: Jeff Bartlett and Nutsinee

Thanks to all for transitioning to laser safe for the installation.

Krishna

I recentered the BRS-Y this morning. The driftmon should end up around + 5k counts, which gives ~20k counts of useful range before the next recentering. The drift rate currently is about 180 counts per day (see image), so next recentering will be in ~3 months. As noted in 34145, recentering was much easier this time because the recentering rod prefers certain positions, which happened to be in an acceptable range this time.

BRS-Y is ready for SEI use.

I reset the PSL power watchdogs at 16:56 UTC (9:56 PDT).  This closes FAMIS 3644.

J. Oberling, E. Merilh

This morning we swapped the oplev laser for the ETMy oplev, which has been having issues with glitching.  The swap went smooth with zero issues.  Old laser SN is 130-1, new laser SN is 194-1.  This laser operates at a higher power than the previous laser, so the SUM counts are now ~70k (used to be ~50k); the individual QPD segments are sitting between 16k and 19k counts.  This laser will need a few hours to come to thermal equilibrium, so I will assess whether or not glitching has been improved this afternoon; I will keep the work permit open until this has been done.

For those investigating the possibility of these lasers causing a comb in DARM, the laser was off and the power unplugged for ~11 minutes.  The laser was shut off and unplugged at 16:14 UTC (9:14 PDT); we plugged it back in and turned it on at 16:25 UTC (9:25 PDT).

I have turned the heat off in Zone 3B in the LVEA. I will continue to closely monitor these temperatures. 

TITLE: 04/04 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Preventive Maintenance
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 7mph Gusts, 6mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.48 μm/s 
QUICK SUMMARY:

Peter has transitioned the LVEA to laser safe. Chandra has closed the gate valves. IFO is down. IMC is set to OFFLINE. ISS second loop is off. ISI config is set to SC_OFF_NOBRSXY. Krishna is working at end Y. Filiberto is investigating PEM chassis in CER. Tumbleweed balers are on site. Rotorooter is here to backfill hole. Travis has started prep work for camera install. Ed and Jason are heading to end Y to swap optical lever laser.

TITLE: 04/04 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 64Mpc
INCOMING OPERATOR: Travis
SHIFT SUMMARY: one lock loss, relocked and in Observe
LOG:

• 13:02UTC - lock loss
• 14:15UTC - Bubba to EY - in the mechanical room
• 14:15UTC - Apollo at Mid-Y
• 14:19UTC - Observe (Bubba still at EY)
• 14:37UTC - JeffB to PSL chiller room
• 14:43UTC - JeffB back

As Krishna noted in aLog 35160, this machine does not have a lot of extra juice to run this.  I should have closed out before but was watching the diagnostics.  Jim turned off the sensor correction so in case the session closing glitched things, it would not glith the ISI/IFO.  It did not and SC has been turned back on.

Jim, Dave:

At 15:44:58 UTC (08:44:58 PDT) we received a timing error which only lasted for one second. The error was reported by the CNS-II independent GPS receivers at both end stations, they both went into the 'Waiting for GPS lock' error state at 15:44:58, stayed there for one second, and then went good. The IRIG-B signals from these receivers are being acquired by the DAQ (and monitored by GDS). The IRIG-B signals for the second prior, the second of the error, and the following two seconds (4 seconds in total) are shown below.

As can be seen, even though EX and EY both reported the error, only EX's IRIG-B is missing during the bad second.

The encoded seconds in the IRIG-B are shown in the table below. Note that the GPS signal does not have leap seconds applied, so GPS = UTC +18.

So EY was sequential through this period. EX slipped the 16 second by a second, skipped 17 and resynced at 18.

J. Kissel

I've gathered our "bi-weekly" calibration suite of measurements to track the sensing function, and ensure all calibration is within reasonable uncertainty and to have corroborating evidence for a time-dependent detuning spring frequency & Q. Trends of previous data have now confirmed time dependence -- see LHO aLOG 34967.

Evan is processing the data and will add this day's suite to the data collection.

We will begin analyzing the 7.93 Hz PCAL line that's been in place since the beginning of ER10, using a method outlined in T1700106, and check the time dependence in a much more continuous fashion. My suspicion is that the SRC detuning parameters will change on the same sort of time scale as the optical gain and cavity pole frequency.

Note also, that I've grabbed a much longer data set for the broad-band injection, as requested by Shivaraj -- from 22:50:15 UTC to 22:54:20 UTC, roughly 4 minutes.

The data have been saved and committed to:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O2/H1/Measurements/SensingFunctionTFs
    2017-03-21_H1DARM_OLGTF_4to1200Hz_25min.xml
    2017-03-21_H1_PCAL2DARMTF_4to1200Hz_8min.xml

    2017-03-06_H1_PCAL2DARMTF_BB_5to1000Hz_0p25BW_250avgs_5min.xml
The data have been exported with similar names to the same location in the repo.

For time-tracking, this suite took ~38 minutes from 2017-03-21, 22:18 - 22:56 UTC.