Displaying reports 63281-63300 of 85626.Go to page Start 3161 3162 3163 3164 3165 3166 3167 3168 3169 End
Reports until 08:06, Thursday 29 October 2015
H1 General
edmond.merilh@LIGO.ORG - posted 08:06, Thursday 29 October 2015 (22944)
Shift Summary - OWL Transition

TITLE:  Oct 29 OWL Shift 7:00-15:00UTC (00:00-08:00 PDT), all times posted in UTC

STATE Of H1: Observing

SUPPORT: N/A

LOCK DURATION: Entire shift

INCOMING OPERATOR: Nutsinee

END-OF-SHIFT SUMMARY:  

IFO still locked at 78Mpc. There was a slight downtrend in range to ~65Mpc. Wind Calm. Sei and µSei remain the same. GraceDB External Notification script failing/recovering with frequent regularity. Lockloss at 14:34. ITMY Stage2 Coil Driver BIO.

SUS E_T_M_Y saturating (Oct 29 10:47:01 UTC)
SUS E_T_M_Y saturating (Oct 29 10:47:04 UTC)

SUS E_T_M_Y saturating (Oct 29 12:00:10 UTC)
SUS E_T_M_Y saturating (Oct 29 12:01:37 UTC)
SUS E_T_M_Y saturating (Oct 29 12:01:40 UTC)

ACTIVITY LOG:

ISI ITMY stage 2 watch dog tripped (Oct 29 14:34:47 UTC)
DRMI Unlocked (Oct 29 14:34:47 UTC)
Intention Bit: Commissioning (Oct 29 14:34:47 UTC)

ISI ITMY stage 2 watch dog tripped (Oct 29 14:57:49 UTC)

H1 General
edmond.merilh@LIGO.ORG - posted 07:37, Thursday 29 October 2015 - last comment - 08:00, Thursday 29 October 2015(22943)
Lockloss
ISI ITMY stage 2 watch dog tripped (Oct 29 14:34:47 UTC)
DRMI Unlocked (Oct 29 14:34:47 UTC)
Intention Bit: Commissioning (Oct 29 14:34:47 UTC)
ISC_LOCK state: DOWN (Oct 29 14:34:56 UTC)
ISI ITMY stage 2 watch dog tripped (Oct 29 14:34:47 UTC)
DRMI Unlocked (Oct 29 14:34:47 UTC)
Intention Bit: Commissioning (Oct 29 14:34:47 UTC)
ISC_LOCK state: DOWN (Oct 29 14:34:56 UTC)
 
DRMI Unlocked (Oct 29 14:34:47 UTC)
Intention Bit: Commissioning (Oct 29 14:34:47 UTC)
ISC_LOCK state: DOWN (Oct 29 14:34:56 UTC)
ISI ITMY stage 2 watch dog tripped (Oct 29 14:34:47 UTC)
DRMI Unlocked (Oct 29 14:34:47 UTC)
Intention Bit: Commissioning (Oct 29 14:34:47 UTC)
ISC_LOCK state: DOWN (Oct 29 14:34:56 UTC)
ISI ITMY stage 2 watch dog tripped (Oct 29 14:34:47 UTC)
DRMI Unlocked (Oct 29 14:34:47 UTC)
Intention Bit: Commissioning (Oct 29 14:34:47 UTC)
Comments related to this report
edmond.merilh@LIGO.ORG - 08:00, Thursday 29 October 2015 (22945)

ISI ITMY stage 2 watch dog tripped (Oct 29 14:57:49 UTC)

Images attached to this comment
H1 General
edmond.merilh@LIGO.ORG - posted 04:03, Thursday 29 October 2015 (22942)
Mid-Shift Summary - OWL

MID-SHIFT SUMMARY:  

All is quiet. Environmental hasn’t changed. One glitch in ETMY. Slight downtrend in range. Now observing serving at 75Mpc.

H1 General
edmond.merilh@LIGO.ORG - posted 04:03, Thursday 29 October 2015 (22941)
Mid-Shift Summary - OWL

MID-SHIFT SUMMARY:  

All is quiet. Environmental hasn’t changed. One glitch in ETMY. Slight downtrend in range. Now observing serving at 75Mpc.

H1 General
edmond.merilh@LIGO.ORG - posted 00:05, Thursday 29 October 2015 (22940)
Shift Summary - OWL Transition

TITLE: Oct 29 OWL Shift 7:00-15:00UTC (00:00-08:00 PDT), all times posted in UTC

STATE Of H1: Observing

OUTGOING OPERATOR: Patrick

QUICK SUMMARY: IFO is in Observing @ ~80.9Mpc. Eq sei bands are all in the .22micron range. µSei is around .3µ. 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. MICH Live is still “breathing” and GraceDB External Alert Notifications continue to periodically blink in and out of error

LHO General
patrick.thomas@LIGO.ORG - posted 00:04, Thursday 29 October 2015 (22939)
Ops Eve End Shift Summary
TITLE: 10/28 [EVE Shift]: 23:00-07:00 UTC (16:00-00:00 PDT), all times posted in UTC
STATE Of H1: Observing @ ~79 MPc.
SHIFT SUMMARY: Remained in observing remainder of shift. Seismic is mostly unchanged. Terramon reported red for an earthquake in Alaska, but it was barely visible in the seismic trace. Winds have come down below 10 mph.
SUPPORT: Cheryl, Jenne, Evan (help with diagnosing MC2 position change)
INCOMING OPERATOR: Ed

ACTIVITY LOG:

23:33 UTC Bubba back from looking at PSL AC units (outside building)
00:37 UTC Dave and Jim B. turning off wireless in CER
00:42 UTC Dave and Jim B. back
00:51 UTC Evan and I into LVEA to look for the light Kyle reported
01:14 UTC Evan and I back
01:41 UTC Restarted GraceDB query script
02:02 UTC Observing

3 SUS ETMY saturations after going to observing

Intention Bit: Undisturbed (Oct 29 02:01:53 UTC)
SUS E_T_M_Y saturating (Oct 29 02:33:41 UTC)
Current time: Oct 29 03:00:00 UTC
Current time: Oct 29 04:00:00 UTC
SUS E_T_M_Y saturating (Oct 29 04:37:30 UTC)
Current time: Oct 29 05:00:00 UTC
SUS E_T_M_Y saturating (Oct 29 05:19:08 UTC)
Current time: Oct 29 06:00:00 UTC
Current time: Oct 29 07:00:00 UTC
H1 General
nutsinee.kijbunchoo@LIGO.ORG - posted 22:42, Wednesday 28 October 2015 - last comment - 15:15, Monday 02 November 2015(22938)
(A Very late) Ops Day Shift Summary

TITLE:  "10/28 [DAY Shift]: 15:00-23:00UTC (08:00-16:00 PDT), all times posted in UTC" 

STATE Of H1:  Lock Acquisition

SUPPORT: Jeff K., Kiwamu, Jeff B. 

SHIFT SUMMARY: Not much happened during the day. The ifo stayed locked until toward the very end of the shift. Difficulty recovering from the lockloss due to many optics became misaligned. I restarted GraceDB script once today.

INCOMING OPERATOR: Patrick

ACTIVITY LOG:

15:25 Fil to Mid Y pick up EOM stuff

15:57 Fil back

19:04 Out of Observation to run DARM and Pcal open loop gain transfer function

20:13 Kyle to HAM3 after TF done. Cheryl to HAM12 area.

----------------Jeff Bartlett covering for me from 21:00-22:00----------------

21:33 Lockloss. 

There're few other things I couldn't make sense off his notes. Will post more later when I do!

-------------------------------------------------------------------------------------------

22:00 I came back to find the ifo have lost lock. Jeff reported ifo was locking in green but couldn't move on because the power wasn't high enough. The ALSX beam spot have moved significantly. Almost every optics I looked at moved by significant amount (including ITMs and ETMs but not TMS) and I wasn't sure where I should start touching. Everyone was out for the 3 O'clock meeting. I didn't notice that IMC was locking at the wrong mode.

23:00 Patrick took over.

 

Ps. I might have missed a couple of activities (outside the LVEA, low impact) during the chaos. Sorry about that.

Comments related to this report
nutsinee.kijbunchoo@LIGO.ORG - 15:15, Monday 02 November 2015 (23050)

21:36 Evan and Borja to HAM6

21:40 Evan and Borja back

21:44 Cheryl Out of LVEA

LHO General
patrick.thomas@LIGO.ORG - posted 19:35, Wednesday 28 October 2015 - last comment - 09:06, Thursday 29 October 2015(22936)
Observing
I stopped in DC readout and Evan and I went into the LVEA to look for the flashing light that Kyle reported (alog 22931). We think we may have located it somewhere under HAM4 but could not determine the source without crawling under the output beam tube. So we left it for later investigation. I also found a phone near the PSL enclosure with the line still connected. The power was unplugged but I unplugged the line from the wall as well. I also unplugged the extension cord from the wall that the phone had been unplugged from. We also heard what sounded like a drop of water falling in a cave. The light was on in the CER and we turned it off on the way out. We noted that some of the light from the CER leaks into the LVEA through an opening in the wall for a cable tray. We were in there from around 00:51 UTC to 01:14 UTC.

Jim and Dave turned off the wireless access point that was turned on for Kyle. (alog 22931)

I had to engage the ISS second loop by hand.

I had to restart the GraceDB query script.

Jenne ran the a2l script.

I accepted in SDF the alignment offsets that Cheryl made to MC2. (alog 22933) (see first attached)

I reverted the SDF differences for the H1:SUS-ITMY_L2_DAMP_MODE8 and H1:SUS-ITMX_L2_DAMP_MODE5 filter modules (see attached). Jenne and I claim this is alright because the gain on these is 0. Could someone tell us if they changed these and why?

Unfortunately LLO went down from a power glitch just as we came back. We went into observing at 02:01 UTC. The range is around ~ 79 MPc.
Images attached to this report
Comments related to this report
patrick.thomas@LIGO.ORG - 20:12, Wednesday 28 October 2015 (22937)
Also note that a pump cart is running by the east door of HAM3.
nutsinee.kijbunchoo@LIGO.ORG - 09:06, Thursday 29 October 2015 (22946)

It seems to me like somebody was making a filter for violin mode third harmonics. Dave also reported that sombody was making changes to the filter module the same day. 

LHO General
patrick.thomas@LIGO.ORG - posted 17:38, Wednesday 28 October 2015 (22934)
Ops Eve Beginning Shift Summary
TITLE: 10/28 [EVE Shift]: 23:00-07:00 UTC (16:00-00:00 PDT), all times posted in UTC
STATE Of H1: Unlocked
OUTGOING OPERATOR: Nutsinee
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 less than 20 mph.
ISI blends are at 45 mHz.
Earthquake seismic band is between 0.01 and 0.1 um/s. Microseism is between 0.1 and 0.7 um/s.

Nutsinee was struggling with locking ALS when I came in. Kyle had been working on HAM3 and the mode cleaner was locked on an odd mode. Cheryl moved MC2 and I did an initial alignment. Now attempting to get to NLN.
H1 IOO (IOO)
cheryl.vorvick@LIGO.ORG - posted 17:07, Wednesday 28 October 2015 - last comment - 10:17, Thursday 29 October 2015(22933)
Work on HAM3 shifts MC2, but not PR2. IMC recovery required large change in MC2 alignment.

Plot 1: HAM3 rotation in Z, MC2 ptich and yaw, PR2 pitch and yaw, OMC DC shoing lock loss.

HAM3 rotation in Z is the biggest rotation signal.

MC2 shifts -13urad in pitch, and -28urad in yaw

PR2shakes but comes back to within 1urad of where it started.

 

Plot 2: All IMC optics and Recovery

MC1 and MC3 see a change at lock loss, and then some motion at relocking the IMC, but are unchnged, which we knew since they're in HAM2.

MC2 needed to move +50urad in pitch and an additional -12urad in yaw to recover the IMC with good power at MC2 TRANS.

Overall MC2 was moved +37urad in pitch and -40urad in yaw.

The fact that MC1 and MC3 positions are unchanged after recovering the IMC shows that the change of MC2 alignment, while big, did moved MC2 to match the previous MC1 and MC3 alignments.

 

Plol 3: HAM3 HEPI and ISI signals that I believe show that their alignment didn't change, though I'm not completely confident that I got the right channels to show this.

Images attached to this report
Comments related to this report
hugh.radkins@LIGO.ORG - 10:17, Thursday 29 October 2015 (22950)

Those are good SEI channels to look at.  All but the HEPI Pringles are servo'd to DC so something would be wrong if they weren't the same.  There is some hysterisis in the HEPI though as it is overconstrained.  Those 'extra' dofs are the pringles and are not servo'd at DC hence the trend seen in the HP channel.  This is expected to have very little impact on the final ISI table position.

LHO FMCS
kyle.ryan@LIGO.ORG - posted 15:52, Wednesday 28 October 2015 - last comment - 17:43, Wednesday 28 October 2015(22931)
~1330 -1545 hrs. local -> Replaced HAM3 annulus ion pump
Pump cart running near East Door of HAM3 overnight -> Will shut down and disconnect tomorrow (assuming no leaks) 

Also, I had Richard energize the wireless for the LVEA for my work and I assume that it is still on? - Don't know how to turn it off.  


I noticed an intense flashing light located somewhere beneath BSC1 or BSC2 when I was connecting my instrument air line below the OMC.  I have never noticed this in the past.
Comments related to this report
david.barker@LIGO.ORG - 17:43, Wednesday 28 October 2015 (22935)

LVEA WAP is now powered off

H1 General
nutsinee.kijbunchoo@LIGO.ORG - posted 15:28, Wednesday 28 October 2015 (22930)
Lockloss 14:33

Likely due to Kyle working on HAM3 (literally). ALSX beam spot moved so much that's impossible to reacquire lock right now. An initial alignment might be necessary but I'm not sure if it's a good idea to do it  when Kyle is possibly still climbing on the chamber. I will wait until he's out.

Images attached to this report
H1 SEI
hugh.radkins@LIGO.ORG - posted 14:50, Wednesday 28 October 2015 - last comment - 16:33, Wednesday 28 October 2015(22929)
Update on HAM1 HEPI Inertial Spectra (Post Pier Grouting)--no pervasive changes observed.

The comparison yesterday had very different ground motions so it bears repeating with similar GM time.

Attached is comparison from 4am Tuesday (reference traces) and 2am this morning.  Below 10hz on X Y & Z there is nothing to mention.  Between 10 & 100hz or something on X & Y, there are both more and less noisy bands not obviously due to the GM.  The Z dof looks very comparable.  On the rotational DOFs, there are a few areas of interest: RX 0.5hz; RY 0.1--0.5hz & 20hz; RZ 20--80hz.  I'll repeat this tomorrow to see if these notables are repeatable.

Images attached to this report
Comments related to this report
hugh.radkins@LIGO.ORG - 16:33, Wednesday 28 October 2015 (22932)

JeffK & HughR

Here are TFs and coherences between the ground STSs near HAM2 and the HEPI floating L4Cs.  These comparisons are from 3am Monday and Wednesday with pale reference traces from before Grouting Monday.   The grouted data look mostly just like before grouting but there are a couple bands where things look better now: Y, 1 & 35hz.  Again to be repeated.

Images attached to this comment
H1 CAL (ISC)
jeffrey.kissel@LIGO.ORG - posted 13:44, Wednesday 28 October 2015 - last comment - 12:33, Friday 06 November 2015(22928)
New DARMOLG TF and PCAL2DARM TF gathered; There are some changes as expected, but still smaller that 5% and 5 [deg]
J. Kissel, K. Izumi, N. Kijbunchoo

We've gathered new DARMOGLTF measurements to continue our long-term investigating on the slow evolution of the calbriation parameters. Based on what I see in DTT alone, the uncorrected loop gain and pcal to CAL-CS transfer function remains within 5% and 5 [deg] of the reference model. Very good! I attach screen shots of the raw measurements and a conlog of the relevant settings, but more detailed analysis to come.

The new DTT results live here:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/DARMOLGTFs/2015-10-28_H1_DARM_OLGTF_7to1200Hz.xml
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/PCAL/2015-10-28_PCALY2DARMTF_7to1200Hz.xml

and have been exported to the following:
/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/DARMOLGTFs
 1 / (1 + G) = 2015-10-28_H1_DARM_OLGTF_7to1200Hz_A_ETMYL3LOCKIN2_B_ETMYL3LOCKEXC_coh.txt 
               2015-10-28_H1_DARM_OLGTF_7to1200Hz_A_ETMYL3LOCKIN2_B_ETMYL3LOCKEXC_tf.txt
         -G  = 2015-10-28_H1_DARM_OLGTF_7to1200Hz_A_ETMYL3LOCKIN2_B_ETMYL3LOCKIN1_coh.txt
               2015-10-28_H1_DARM_OLGTF_7to1200Hz_A_ETMYL3LOCKIN2_B_ETMYL3LOCKIN1_tf.txt

/ligo/svncommon/CalSVN/aligocalibration/trunk/Runs/O1/H1/Measurements/PCAL/
C / (1 + G)  = 2015-10-28_PCALY2DARMTF_7to1200Hz_A_PCALRX_B_DARMIN1_coh.txt
               2015-10-28_PCALY2DARMTF_7to1200Hz_A_PCALRX_B_DARMIN1_tf.txt
Images attached to this report
Comments related to this report
richard.savage@LIGO.ORG - 12:33, Friday 06 November 2015 (23149)

Sudarshan, Darkhan, RickS

Using data from the SLM tool for 67 minutes just before the measurement of the Pcal2Darm TF, we calculated the TF for the 1 kHz and 3 kHz Pcal lines.

The plots attached below show:

1) The "kappas"

2) The measured TF, with coherence and the fractional uncertainty

3) The data for the 1 kHz line and comparison with TF values interpolated from the measured TF data

4) The data for the 3 kHz line

At 1 kHz, the transfer coefficient calculated from the SLM data differes from the interpolated coefficient from the meassured transfer function by 1.01% in amplutude and 0.15 deg. in phase.

The script and plots will be submitted to the SVN tomorrow and I will add a comment giving their location when they are.

Non-image files attached to this comment
H1 CDS
david.barker@LIGO.ORG - posted 13:07, Wednesday 28 October 2015 (22927)
starting syslogging on all front end computers

Jonathan, Ryan, Jim, Carlos, Dave

we have configured and started the syslog-ng daemons on all the front end computers. This was done when H1 was out of observing mode. We have also configured SSHD on the front end computers to log any successful and unsuccessful login attempts.

H1 SYS (CDS)
david.barker@LIGO.ORG - posted 13:05, Wednesday 28 October 2015 (22926)
Beckhoff SDF, updated OBSERVE.snap files to remove small differences

The new Beckhoff SDF system was showing some channels as being different but the difference value is below the resolution in the OBSERVE.snap file. For these channels I have accepted them and wrote a new OBSERVE.snap file. Some channels were changing continuously, I have unmonitored these. The SDF is now running with zero diffs.

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