Shift Summary -Day Transition

TITLE: Nov 5 DAY Shift 16:00-23:00UTC (08:00-04:00 PDT), all times posted in UTC

STATE Of H1: Observing

OUTGOING OPERATOR: Jim

QUICK SUMMARY: IFO is in Observing @ ~78.2Mpc. Eq sei bands are all in the .23micron range. µSei is around .2µ. Wind is <10mph. All light appear to be off in E, M, CS & PSL. CW injections are running. Cal lines are running. Livingston is up and running. Quite 90 blends being used.

Mid shift summary

Lost lock about 2 hours ago, not sure why. Trying to relock now, but DRMI is not cooperating. Otherwise, things are quiet. Winds down, useism is down. RF45 has not been awful.

Ops Eve End Shift Summary

TITLE: 11/04 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC
STATE Of H1: Observing @ ~80 MPc.
SHIFT SUMMARY: Rode through magnitude 5.2 earthquake in Russia. Taken out of observing for 20 minutes to offload SR3 M2 to M1. RF45 noise has not reappeared. No major change in wind or seismic.
SUPPORT: Jenne
INCOMING OPERATOR: Jim

ACTIVITY LOG:

Lost lock twice on DRMI split mode.
00:28 UTC Evan and Keita to LVEA to check on RF45 noise.
00:29 UTC Caught lock on split mode. Moved BS in pitch from 164.84 to 165.32 to lock DRMI on 1f.
00:34 UTC Lock loss on CARM_5PM
00:51 UTC Lock loss on PARK_ALS_VCO
00:57 UTC Lock loss on CARM_ON_TR
01:01 UTC Keita and Evan done
01:31 UTC Observing
07:21 UTC Out of observing to offload SR3 M2 to M1
07:41 UTC Observing

Observing

Jenne finished offloading SR3 M2 to M1.

Intention Bit: Commissioning (Nov 5 07:21:59 UTC)
Intention Bit: Undisturbed (Nov 5 07:40:52 UTC)

Out of Observing

Jenne, Patrick

Happened to notice that a bit on the ODC mini overview on nuc1 was red. Traced it to a DAC overflow on SR3 M2. Jenne trended it back. It looks like it started about 2 hours ago. The signal originates from the guardian cage servo. We have taken the IFO out of commissioning to manually offload it to M1.

Ops Eve Mid Shift Summary

Have remained in observing. RF45 noise has not reappeared.

Rode through jump in 0.03 - 0.1 Hz seismic band to slightly above 0.1 um/s approximately 90 minutes ago.

From USGS:
5.2 11km WSW of Ust'-Kamchatsk Staryy, Russia
2015-11-05 01:59:22 UTC5 4.6 km deep

Terramon reports it arriving at 18:24:17 PST (02:24:17 UTC).

Observing

ISI blends are at Quite_90. Seismic and winds are unchanged from start of shift. No SDF differences to check.

RF45 appears to have subsided for now.

Range is ~ 77 MPc.

Ops Eve Beginning Shift Summary

TITLE: 11/03 [EVE Shift]: 00:00-08:00 UTC (16:00-00:00 PDT), all times posted in UTC
STATE Of H1: Lock acquisition
OUTGOING OPERATOR: Jeff
QUICK SUMMARY:
Lights appear off in the LVEA, PSL enclosure, end X, end Y and mid X. I can not tell from the camera if they are off at mid Y.
Winds are between ~ 5 and 15 mph.
ISI blends are at Quite_90.
Earthquake seismic band is between 0.01 and 0.03 um/s. Microseism is between 0.08 and 0.2 um/s.

Evan and Keita just finished looking at RF45 cabling in PSL enclosure. Attempting to relock.

Are EY-Mainsmon glitches related to DARM glitches?

Jordan, TJ, Jess, Andy, Nairwita

We noticed that there  was a significant increase in loud SNR glitch rate at the end of 3rd November's lock (Fig 1 and 2). While going through the HVETO  result we noticed that these glitches were vetoed out at round 1 and the auxiliary channel used to veto out these triggers is : PEM-EY_MAINSMON_EBAY_QUAD_SUM  (Fig 3).  Omega scan of one of such glitch can be seen in Fig 4. 

The spectrum of one of the EY EBAY mainsmon channel is also attached. The "Blue" one is the current spectrum (4th Nov ~ 10:45pm UTC) and red one corresponding to one of the coincident glitch time.  Though the later one (red trace) is slightly elevated in compare to the blue one, it's hard to believe that Mainsmon glitches with such small SNR can create those glitches in DARM. 

We did notice some related glitches in EX Mainsmon (but not in CS Mainsmon channel, any magnetometers or microphones).  HEPI L4C, GS13s and ACC channels  at corner station have some glitches around the same time. 

The main question is why these glitches are showing up in end station Mainsmon channels and around the same time at corner station seismometers. 

Ops Day Shift Summary

Activity Log: All Times in UTC (PT)

15:51 (07:51) Check TCS Chillers 
16:00 (08:00) Take over from Jim
16:16 (08:16) Lockloss – Unknown
08:23 (08:23) Keita – Going to End-X to look for missing equipment
16:39 (08:39) Keita – Back from End-X
16:44 (08:44) Chris – Replacing filter in both mid stations
17:21 (09:21) Contractor (Tom) on site for John
18:10 (10:10) Bubba & John – Going to End-Y chiller yard
18:17 (10:17) Locked at NOMINAL_LOW_NOISE, 22.5W, 76Mpc	
18:25 (10:25) Set intent bit to Observing
18:56 (10:56) Bubba & John – Back from End-Y
19:10 (11:10) Chris – Beam tube sealing on X-Arm between Mid & End stations
19:26 (11:26) Set intent bit to Commissioning while Evan & Filiberto are in LVEA
19:30 (11:30) Evan & Filiberto – Going into the LVEA  
19:40 (11:40) Kyle & Gerardo – Going to Y28 to look for equipment
19:45 (11:45) Lockloss – Evan & Filiberto at electronics rack 
20:05 (12:05) Kyle & Gerardo – Back from Y28
20:40 (12:40) IFO locked & Intent bit set to Observing 
21:12 (13:12) Joe – Going to work with Chris on beam tube sealing on X-Arm
21:49 (13:49) Kyle & Gerardo – Going to X28
22:38 (14:38) Set the intent bit to Commissioning
22:40 (14:40) Keita & Evan – Going into PSL to check cabling for the RF45 problem
22:57 (14:57) Lockloss – Due to PSL entry
23:00 (15:00) Robert – Staging shakers in the LVEA
23:20 (15:20) Joe & Chris – Back from X-Arm
23:46 (15:46) Kyle & Gerardo – Back from X28
00:00 (16:00) Turn over to Patrick


Shift Summary:

Title: 11/04/2015, Day Shift 16:00 – 00:00 (08:00 – 16:00) All times in UTC (PT)

Support: Kiwamu, Evan, Keita, Mike, Filiberto, Daniel, Jason

Incoming Operator: Patrick

Shift Summary: 

Lockloss at 16:16 (08:16) - Unknown

After lock loss, had trouble getting past DIRM_1F. Decided to do an initial alignment. Relocked IFO at 17:47 (09:47). Ran the A2L script. Had several SDF notifications for both ETMs and ITMs, could not find a SUS person. Took a snapshot of all and accepted. Set the intent bit to Observing at 18:25 (10:25)  
   
After relocking this morning the RF45 noise has come back, at several time per minute rate. This is knocking the range down into the high teens and low 20s Mpc. Confer with Evan, Keita, Mike, Daniel, and Filiberto. Evan & Filiberto going into the LVEA to check cabling.
  
The cabling checks outside the PSL did not change the RF45 glitch rate. Keita & Evan going into the PSL to check for cabling issues there. Lockloss when the PSL environmental controls were switch on. 

Crew is out of the PSL. Starting to relock. 

EOM driver investigation in PSL: no conclusions

Keita, Evan

We went into the PSL to see if we could find a source for today's 45 MHz glitches.

We didn't find anything conclusive. Mostly, it seems that bending the main cable (the LMR195 that carries the 45 MHz into the PSL) causes large glitches in the AM stabilization control signal, similar to what is seen by bending/tapping the LMR195 cable at ISC R1. We did not really see anything by bending the slow controls / power cables, or the rf cable that drives the EOM.

The main cable passes from the ISC rack, through the PSL wall, through the (overstuffed) cable protector on the HPO side of the PSL table, over the water pipes underneath the PSL, and then terminates at the EOM driver, which sits just underneath the PMC side of the table. Keita notes that the pipes don't seem to be vibrating.

It is worth noting that these glitches, which are clearly seen in the control signal time series of the EOM driver in the PSL, do not show up in the control signal time series of the spare driver hooked up in the CER.

~1340 - 1530 hrs. local -> Kyle and Gerado back and forth to and from X2-8

SVN status of source files

Here is the current list of source files which have outstanding local modifications which should be committed to the svn repository. Following Jeff's request, for each file with a local mod I've printed out the owner and date of the modification. I'm in contact with Hugh regarding the changes made to the BSC ISI observe.snap files.

david.barker@sysadmin0: ./check_h1_files_svn_status.bsh 

 

SVN status of front end code source files...

done (list of files scanned can be found in /tmp/source_files_list.txt)

 

SVN status of filter module files...

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSMC1.txt

        sheila.dwyer Oct 6 12:33

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSMC3.txt

        sheila.dwyer Oct 6 12:32

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSPRM.txt

        sheila.dwyer Oct 6 12:14

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSPR3.txt

        sheila.dwyer Oct 6 12:44

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSPR2.txt

        sheila.dwyer Oct 6 12:15

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSSR2.txt

        sheila.dwyer Oct 6 12:16

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSSRM.txt

        sheila.dwyer Oct 6 12:17

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSSR3.txt

        sheila.dwyer Oct 6 12:44

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSITMY.txt

        evan.hall Oct 28 14:31

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSITMX.txt

        evan.hall Oct 28 13:39

M       /opt/rtcds/userapps/release/isc/h1/filterfiles/H1OAF.txt

        kiwamu.izumi Oct 25 21:14

M       /opt/rtcds/userapps/release/cal/h1/filterfiles/H1CALCS.txt

        jeffrey.kissel Oct 20 12:25

M       /opt/rtcds/userapps/release/lsc/h1/filterfiles/H1LSC.txt

        sheila.dwyer Oct 13 12:27

M       /opt/rtcds/userapps/release/asc/h1/filterfiles/H1ASC.txt

        sheila.dwyer Oct 10 14:01

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSETMY.txt

        evan.hall Oct 29 15:47

M       /opt/rtcds/userapps/release/sus/h1/filterfiles/H1SUSETMX.txt

        evan.hall Oct 29 13:36

M       /opt/rtcds/userapps/release/cal/h1/filterfiles/H1CALEX.txt

        sudarshan.karki Oct 27 12:29

done (list of filter module files scanned can be found in /tmp/full_path_filter_file_list.txt)

 

SVN status of safe.snap files...

done (list of safe.snap files scanned can be found in /tmp/safe_snap_files.txt)

 

SVN status of OBSERVE.snap files...

M       /opt/rtcds/userapps/release/isi/h1/burtfiles/h1isiitmy_OBSERVE.snap

        hugh.radkins Nov 3 03:25

M       /opt/rtcds/userapps/release/isi/h1/burtfiles/h1isibs_OBSERVE.snap

        hugh.radkins Nov 3 03:25

M       /opt/rtcds/userapps/release/isi/h1/burtfiles/h1isiitmx_OBSERVE.snap

        hugh.radkins Nov 3 03:25

M       /opt/rtcds/userapps/release/isi/h1/burtfiles/h1isietmy_OBSERVE.snap

        hugh.radkins Nov 3 03:25

M       /opt/rtcds/userapps/release/isi/h1/burtfiles/h1isietmx_OBSERVE.snap

        hugh.radkins Nov 3 03:25

done (list of observe.snap files scanned can be found in /tmp/observe_snap_files.txt)

 

SVN status of guardian files...

done

 

Lock Loss Recovery II

   After Evan & Filiberto were out of LVEA relocked the IOF on the first attempt with no apparent problems. Ran the A2L script and cleared the SUS SDF notifications. Back to Observing mode at 20:40 (12:40) 

   SDF notification are listed in the attached snapshots. 

NOTE: Still getting RF45 noise and ETMY saturations. Range is being adversely effected 

Ops Day Mid-Shift Summary

Not a generally good morning. 

   IFO broke lock at 16:16 (08:16). After running initial alignment; relocked the IFO and went into Observing mode at 18:25 (10:25). Shortly after relocking started seeing a lot of RF45 noise events at a rate of several per minute. It was decided to have Evan & Filiberto to go into the LVEA to check the RF cabling. 

   While Evan & Filiberto were in the LVEA working on the cabling, the IFO dropped lock. Waiting for them to come out before relocking.
         

evidence that scattered light couples anthropegenic noise to DARM up to 250 Hz

We have a few piece of evidence that suggest that anthropegenic noise (probably trucks going to ERDF) couples to DARM through scattered light which is most likely hitting something that is attached to the ground in the corner station.

1. Our spectrum is more non-stationary between 100-200 Hz durring times of high anthropegenic noise. Nairwita noted this by looking through summary pages (these glitches only seem to appear on weekdays between 7 am and 4pm local (14-23UTC), and not on Hanford Fridays when anthropegenic noise is low), and Jordan confirmed this by making a few comparisons of high/low anthropegenic noise within lock stretches.  (alog 22594)
2. Corner station ground sensors are a good witness of these glitches.  HVETO shows this clearly (see page for October 14th for example).  Also, comparison of bandpassed DARM to several corner ground motion sensors and accelerometers show that glitches in DARM coincide with ground motion (for example see nutsinee's alog 22527)
3. The DARM spectragram at the time of these glitches show what looks like scattering arches from 1 Hz motion and a velocity of around 40 um second total path length change. alog 22523  Both this high velocity and the fact that the seismometers on the tables don't seem to witness this motion well suggest that something bolted to the ground is involved in the scattering. This velocity is probably too high for something bolted to the ground.
4. The scattering amplitude ratio (ration of scattered amplitude to DC readout light on DCPDs) we would estimate bassed on the fringes in DARM 1e-5, similar to what we got in April  Using the ISCT6 accelerometer to predict the velocity of the motion doesn't quite work out.
5. Annamaria and Roert did some PEM injections in the east bay, which showed a linear coupling to DARM.  Annamaria is still working on the data and trying to disentangle downconverion from the linear coupling, but if we assume that scattered light is responsible for the linear coupling the amplitude ratio is fairly consistent with what we got from the fringe wrapping when trucks go by.

On monday, Evan and I went to ISCT6 and listened to DARM and watched a spectrum while tapping and knocking on various things.  We couldn't get a response in DARM by tapping around ISCT6.  We tried knocking fairly hard on the table, the enclosure, tapping aggresively on all the periscope top mirrors, and several mounts on the table and nothing showed up.  We did see something in DARM at around 100 Hz when I tapped loudly on the light pipe, but this seemed like an excitation that is much louder than anything that would normaly happen.  Lastly we tried knocking on the chamber walls on the side of HAM6 near ISCT6, and this did make some low frequency noise in DARM.  Evan has the times of our tapping.

It might be worth revisiting the fringe wrapping measurements we made in April by driving the ISI, the OMC sus, and the OMs.  It may also be worth looking at some of the things done at LLO to look accoustic coupling through the HAM5 bellow (19450 and 

19846)