Displaying reports 51581-51600 of 83205.Go to page Start 2576 2577 2578 2579 2580 2581 2582 2583 2584 End
Reports until 10:55, Tuesday 13 December 2016
H1 CAL (DetChar)
jeffrey.kissel@LIGO.ORG - posted 10:55, Tuesday 13 December 2016 (32515)
PCALX Roaming Calibration Line Now Permanently OFF Until Further Notice
J. Kissel
WP 6368 (Now Closed)

The PCALX roaming calibration line has been off since Dec 09 2016 06:41:24 UTC (1165300901, Dec 08 2016 22:41:24 PST) when Rick, Evan, and Travis had last turned it OFF for transient hardware injections (see LHO aLOG 32376). Since Sudarshan now has a satisfactory amount of data at 30 [W], and has processed the data (see LHO aLOG 32512), we will keep this line OFF as planned, until further notice.
H1 PSL
edmond.merilh@LIGO.ORG - posted 10:47, Tuesday 13 December 2016 (32513)
PSL Weekly 10 Day Trends - FAMIS #6126

WeeklyXtal - PSL_AMP_D3 and D4PWR are tracking humidity trends pretty coherently. D1&2 powers have trended upward slightly.

WeeklyLaser -  Over the last 3 or 4 days the LRA position has walked it's way down from the Nominal 4500 to 4496. OSC_BOXHUM has dropped even lower.

WeeklyEnv - Humidities down, temperatures stable.

WeeklyChiller - OSC_PRESS1&2 are trending slightly downward. Headflows are also, very marginally, drifting downward.

Images attached to this report
LHO VE
chandra.romel@LIGO.ORG - posted 10:37, Tuesday 13 December 2016 (32514)
new IP12 power supply

WP 6396

Installed new LPC (+) voltage power supply for ion pump #12 at EX. Next Gerardo will install CDS wiring for MEDM read back.

H1 PSL
thomas.shaffer@LIGO.ORG - posted 09:56, Tuesday 13 December 2016 (32510)
PSL Weekly Report

FAMIS#7416

Laser Status:
SysStat is good
Front End Power is 34.36W (should be around 30 W)
Front End Watch is GREEN
HPO Watch is GREEN
PMC:
It has been locked 0.0 days, 0.0 hr 6.0 minutes (should be days/weeks)
Reflected power is 14.17Watts and PowerSum = 75.1Watts.

FSS:
It has been locked for 0.0 days 0.0 hr and 6.0 min (should be days/weeks)
TPD[V] = 2.18V (min 0.9V)

ISS:
The diffracted power is around 3.314% (should be 5-9%)
Last saturation event was 0.0 days 0.0 hours and 6.0 minutes ago (should be days/weeks)

Possible Issues:
PMC reflected power is high

H1 General (DetChar)
kentaro.mogushi@LIGO.ORG - posted 09:52, Tuesday 13 December 2016 (32509)
DQ Shift: Thursday 8th 00:00 UTC - Sunday 11th 23:59 UTC
wiki: https://wiki.ligo.org/DetChar/DataQuality/DQShiftLHO20161208

Below I summarise the main highlights of this shift:

duty cycle 65.2%, the range is 70 - 75Mpc.
on Thursday 8th lockloss due to multiple earthquakes keeping occuring to morning on Friday
Software saturation - H1:LSC-X_ARM_CTRL [1] at ~11:00UTC on Thursday 8th
18kHz PI modes strong peak at 11:07UTC and 12:10UTC on Thursday 8th, at ~8:00UTC, ~ 9:00UTC, ~ 10:30UTC and at ~12:30 on Friday 9th.
the planned stochastic injection at 00:10UTC Thursday 8th
quiet on Saturday 10th and Sunday 11th
H1 PSL (PSL)
peter.king@LIGO.ORG - posted 09:24, Tuesday 13 December 2016 - last comment - 14:07, Tuesday 13 December 2016(32508)
PSL phone disabled
The PSL Enclosure phone has been switched off.

A reminder that it needs to be re-enabled when work is being done in the Laser Area Enclosure.
The power supply for it is in Rm 163.
Comments related to this report
david.shoemaker@LIGO.ORG - 12:35, Tuesday 13 December 2016 (32521)
Please note: The DetChar-noticed ringtone (see https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=32503) forwarded to a second nearby phone, with an audible speakerphone auto response, that must also be disabled. 

More generally, the VEAs must be re-checked for active telephones.
jason.oberling@LIGO.ORG - 13:04, Tuesday 13 December 2016 (32525)

The "2nd phone" heard in the audio recording from DetChar is the phone in the PSL enclosure anteroom.  It is important to note that there is no call forwarding involved, both phones always ring if you call the PSL enclosure extension.  The anteroom phone always lags behind the laser room phone though, which is why it appears to be forwarding the call.  It sounds so faint because of the acoustic damping of the laser room (these phones are quite loud).  Switching off the PSL enclosure phone turns off both the laser room and anteroom phones.  This was tested this morning, as we can hear the anteroom phone from outside of the PSL enclosure; when the enclosure extension was called, no ringing was heard.  To my knowledge neither of the PSL enclosure phones have the capability to auto-answer, they will continue to ring until physically answered or the caller hangs up.

jeffrey.kissel@LIGO.ORG - 14:07, Tuesday 13 December 2016 (32528)DetChar, IOO, OpsInfo, PSL, SYS
Tagging a few more subsystems so they're made digitally aware of this fix.

This also closes FRS Ticket 6923.
LHO General
corey.gray@LIGO.ORG - posted 08:29, Tuesday 13 December 2016 (32497)
OWL Operator Summary

TITLE: 12/13 Owl Shift: 08:00-16:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 73.1393Mpc
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:

Operator-less for the first 90min, but rest of the shift saw me here watching a nice performing H1 on a quiet Earth. 
LOG:

H1 General
jeffrey.bartlett@LIGO.ORG - posted 08:18, Tuesday 13 December 2016 (32505)
Ops Day Shift Transition

Ops Shift Transition:12/13/2016, Day Shift 16:00 – 00:00 (08:00 - 16:00) -  UTC (PT)

State of H1: IFO locked at NOMINAL_LOW_NOISE for past 18.5 hours. Power is 28.2W; Range is 59.0MPc
Intent Bit: Observing
Weather: Wind is a Light Breeze (4- 7mph), cold and partly cloudy
Primary 0.03 – 0.1Hz: Currently at 0.09um/s 
Secondary 0.1 – 0.3Hz: Currently at 0.5um/s
Quick Summary: Prep work for maintenance day    
Outgoing Operator: Corey
H1 DetChar (DetChar, PSL)
andrew.lundgren@LIGO.ORG - posted 07:52, Tuesday 13 December 2016 - last comment - 14:09, Tuesday 13 December 2016(32503)
The PSL answers the call, once again
Andy, Tom Dent, Josh

Nutsinee (alog 32159) and Patrick (alog 32163) both reported a string of glitches during their shifts on Dec 4th. These showed up again in connection with an investigation into some PyCBC loudest events. At Tom's suggestion, we listened to the PSL microphone, which is one of many PEM channels seeing a huge disturbance at these times.

I've attached the wav file of the PSL center mic. It seems like the PSL intercom (or some other phone) rings twice and afterwards forwards the call somewhere else. You can hear a faint third ring, and Josh has another file where talking can be heard after the faint ring. When this happened at LLO during an ER, (L1 alog 8451 the intercom would answer and then make a busy signal.

It's not clear why we haven't seen this more often, or when the intercom could have gotten connected. This is in the middle of a long stretch of science mode.

Edit: To be clear, the loud rings make something very strong in DARM. We're investigating to what extent the quieter stuff shows up.
Non-image files attached to this report
Comments related to this report
joshua.smith@LIGO.ORG - 08:18, Tuesday 13 December 2016 (32504)DetChar

Here's a spectrogram of the PSL Mic annotated. The second set of more distant rings followed by auto answer starts around second 19. Also attached is the STRAIN spectrogram. The coupling to STRAIN is clear for the PSL rings and it looks like there is faintly also the second set of rings seen. Also attached is the longer Wav file with the speakerphone and talking for the first call and the rings of the second call a minute later. 

Images attached to this comment
Non-image files attached to this comment
vernon.sandberg@LIGO.ORG - 10:12, Tuesday 13 December 2016 (32511)

Opend FRS Ticket 6923

jeffrey.kissel@LIGO.ORG - 14:09, Tuesday 13 December 2016 (32529)DetChar, IOO, OpsInfo, PEM, PSL, SYS
Both PSL Phones have been disabled, see LHO aLOG 32508.

FRS Ticket 6923 closed.

Tagging other relevant subsystems to envoke L-Mail.
H1 DetChar (DetChar, SEI)
corey.gray@LIGO.ORG - posted 06:15, Tuesday 13 December 2016 - last comment - 07:44, Tuesday 13 December 2016(32500)
DetChar: Any Ideas About H1 Range Drop Around 12:30utc?

Have had a decent night tonight.  However at around 12:30utc noticed H1 range taking a noticeable dip from 70Mpc down to 62Mpc.  All of this happened within an hour time frame (appears to be coming back up near 70Mpc.  There is nothing obvious in the BLRMS seismic traces (well, for high freq the Corner Station seismometer there is a bump which sort of lines up...but the corner station has many of these bumps and the other ones don't drop the range.)  Anyway, it was a curiousity.  

There was a small EQ around this time, but it was after the fact and fairly quick.

Overall the H1 range tends to show very slow oscillations in range values and one would think it was useism, but they also don't match up. I'm just curious about why our range fluctuates on a slow time scale like this & how it's curious it doesn't match seismic (L1's range appears to follow seismic more obviously...atleast from my glances at their range and seismic screenshots.)

Comments related to this report
corey.gray@LIGO.ORG - 06:47, Tuesday 13 December 2016 (32501)DetChar

Attached is a look at the last 12 hrs for the H1 range & also the 3-10Hz & 10-30Hz seismic bands.  It's looks like the range drop mentioned above corresponds with the bump seen on both seismic bands.  I'd like to know what this could be. 

It's interesting that other "bumps don't have noticeable effects on H1 range.  So I'm guessing it's a specific line we're sensitive to, and I'm curious what it could be.

Images attached to this comment
beverly.berger@LIGO.ORG - 07:44, Tuesday 13 December 2016 (32502)DetChar

See the DQ shift aLog where we report

 

  • Excess noise appeared daily at about 13:00 - 14:00 UT in the. 50 - 100 Hz band. Glitches during this period found by hVeto seem to confirm that the cause is seismic. The timing of the excess noise is correlated with a bump in the 10 - 30 Hz BLRMS and appears to be caused by heavy vehicle traffic on Route 10 from 5:00 - 6:00 PST.

 

The excess noise appears to extend up to about 100 Hz and can easily cause the range drop. Today's example of an h(t) spectrogram is attached.

Images attached to this comment
H1 SEI (SEI)
corey.gray@LIGO.ORG - posted 06:07, Tuesday 13 December 2016 - last comment - 08:26, Tuesday 13 December 2016(32499)
Earthquake Report: 4.4 Gulf Of California? L1 lockloss, H1 remained UP

Noticed L1 dropping out of lock at around 13:42 & around this time noticed elevated noise on our EQ BLRMS signal (also notice it on LLO EQ band screenshots).  Nothing observed on Terramon or USGS website (and other websites).  I did notice a 4.4 in Baja California here:  http://www.emsc-csem.org/Earthquake/earthquake.php?id=552372

Comments related to this report
corey.gray@LIGO.ORG - 08:26, Tuesday 13 December 2016 (32506)

Noticed Terramon finally reported this earthquake.  But it must have been 1-2hrs after we saw it on our seismometers.

H1 OpsInfo (GRD, ISC, OpsInfo)
corey.gray@LIGO.ORG - posted 05:31, Tuesday 13 December 2016 - last comment - 01:34, Wednesday 14 December 2016(32498)
EX/EY ECATPLC2: OBSERVING Drop Due To ALS Changes--->More Channels to UNMONITOR!

Since the start of O2, we have had some pesky dropouts of OBSERVING due to SDF channel changes for some ALS channels from a Beckhoff computer at each of our End Stations (sysecatx1plc2 & sysecaty1plc2).  Below, I wanted to list each of the occassions, the amount of time we were out of Science mode, channels involved, and their current state.

Should UNMONITOR (3) ALS-Y Channels

Above we can see all of the channels we noticed/caught/UNMONITORED.  I would suggest we take the preemptive action of UNMONITORING (if not already done so) the following channels for sysecaty1plc2 next time we are out of OBSERVING:

Comments related to this report
keita.kawabe@LIGO.ORG - 08:30, Tuesday 13 December 2016 (32507)

Done.

Images attached to this comment
corey.gray@LIGO.ORG - 01:34, Wednesday 14 December 2016 (32546)

Filed an FRS for this (#6932).  I CLOSED it, but there is always the possibility that rogue channels which haven't been addressed can drop us out in the future.

LHO General
patrick.thomas@LIGO.ORG - posted 20:17, Monday 12 December 2016 - last comment - 11:40, Tuesday 13 December 2016(32491)
Ops Evening Mid Shift Summary
Have remained locked at NLN since 21:44 UTC.
Stood down for a GRB at 23:20 UTC. It appeared that the injections were not automatically blocked for the GRB, so I set the INJ_TRANS guardian node to INJECT_KILL manually. Requested INJECT_SUCCESS at 00:35 UTC.
Damped PI modes 26 and 28.
Ran a2l near beginning of lock.
Comments related to this report
keita.kawabe@LIGO.ORG - 21:10, Monday 12 December 2016 (32492)

About the GRB, it turns out that the guardian was doing the right thing.

The alert was received at 2016-12-12 23:20:22 UTC, but the actual GRB event was at 2016-12-12 15:38:59, hours before the alert.

Since the alert came after our standard window of one hour, the guardian didn't block the injeciton.

patrick.thomas@LIGO.ORG - 23:13, Monday 12 December 2016 (32493)
We just got another GRB alert at 07:05 UTC. This time the event time is around the same time as the created time. The INJ_TRANS guardian did not change again. Perhaps this is because LLO is not locked?
keita.kawabe@LIGO.ORG - 11:40, Tuesday 13 December 2016 (32516)

I and Patrick looked at the trend of H1:GRD-INJ_TRANS_STATE_N, and actually GRB made the guardian transition to state 30 (EXTTRIG_ALERT_ACTIVE) for an hour (attached).

The GRB event is this one: https://gracedb.ligo.org/events/view/E265603

Images attached to this comment
H1 CAL (DetChar, OpsInfo)
jeffrey.kissel@LIGO.ORG - posted 11:02, Wednesday 07 December 2016 - last comment - 09:14, Thursday 22 December 2016(32307)
PCALX Roaming Calibration Line Frequency Changed to 4001.3 to 4301.3 Hz
J. Kissel for S. Karki
WP #6368

I've moved the PCALX roaming line, its long duration sweep, from 4001.3 Hz to 4301.3 Hz. See schedule status below.

Since it looks like we'll have the duty cycle to just finish the schedule within a week, I'm just going to continue to re-gathering the highest frequency data. As such, Sudarshan has something consistent and straightforward with which to work instead of data with a bunch details or qualifications. 


Frequency    Planned Amplitude        Planned Duration      Actual Amplitude    Start Time                 Stop Time                    Achieved Duration
(Hz)         (ct)                     (hh:mm)                   (ct)               (UTC)                    (UTC)                         (hh:mm)
---------------------------------------------------------------------------------------------------------------------------------------------------------
1001.3       35k                      02:00                   39322.0           Nov 28 2016 17:20:44 UTC  Nov 30 2016 17:16:00 UTC         days    @ 30 W  
1501.3       35k                      02:00                   39322.0           Nov 30 2016 17:27:00 UTC  Nov 30 2016 19:36:00 UTC         02:09   @ 30 W         
2001.3       35k                      02:00                   39322.0           Nov 30 2016 19:36:00 UTC  Nov 30 2016 22:07:00 UTC         02:31   @ 30 W
2501.3       35k                      05:00                   39322.0           Nov 30 2016 22:08:00 UTC  Dec 02 2016 20:16:00 UTC         days    @ 30 W
3001.3       35k                      05:00                   39322.0           Dec 02 2016 20:17:00 UTC  Dec 05 2016 16:58:57 UTC         days    @ 30 W
3501.3       35k                      05:00                   39322.0           Dec 05 2016 16:58:57 UTC  Dec 06 2016 21:09:56 UTC         ~15:00  @ 30 W
4001.3       40k                      10:00                   39322.0           Dec 06 2016 21:09:56 UTC  Dec 07 2016 18:50:09 UTC         ~20:00  @ 30 W
4301.3       40k                      10:00                   39322.0           Dec 07 2016 18:50:09 UTC
4501.3       40k                      10:00                   39322.0           
4801.3       40k                      10:00                   39222.0           
5001.3       40k                      10:00                   39222.0         

Frequency    Planned Amplitude        Planned Duration      Actual Amplitude    Start Time                 Stop Time                    Achieved Duration
(Hz)         (ct)                     (hh:mm)                   (ct)               (UTC)                    (UTC)                         (hh:mm)
---------------------------------------------------------------------------------------------------------------------------------------------------------
1001.3       35k                      02:00                   39322.0           Nov 11 2016 21:37:50 UTC    Nov 12 2016 03:28:21 UTC      ~several hours @ 25 W
1501.3       35k                      02:00                   39322.0           Oct 24 2016 15:26:57 UTC    Oct 31 2016 15:44:29 UTC      ~week @ 25 W
2001.3       35k                      02:00                   39322.0           Oct 17 2016 21:22:03 UTC    Oct 24 2016 15:26:57 UTC      several days (at both 50W and 25 W)
2501.3       35k                      05:00                   39322.0           Oct 12 2016 03:20:41 UTC    Oct 17 2016 21:22:03 UTC      days     @ 50 W
3001.3       35k                      05:00                   39322.0           Oct 06 2016 18:39:26 UTC    Oct 12 2016 03:20:41 UTC      days     @ 50 W
3501.3       35k                      05:00                   39322.0           Jul 06 2016 18:56:13 UTC    Oct 06 2016 18:39:26 UTC      months   @ 50 W
4001.3       40k                      10:00                   39322.0           Nov 12 2016 03:28:21 UTC    Nov 16 2016 22:17:29 UTC      days     @ 30 W (see LHO aLOG 31546 for caveats)
4301.3       40k                      10:00                   39322.0           Nov 16 2016 22:17:29 UTC    Nov 18 2016 17:08:49 UTC      days     @ 30 W          
4501.3       40k                      10:00                   39322.0           Nov 18 2016 17:08:49 UTC    Nov 20 2016 16:54:32 UTC      days     @ 30 W (see LHO aLOG 31610 for caveats)   
4801.3       40k                      10:00                   39222.0           Nov 20 2016 16:54:32 UTC    Nov 22 2016 23:56:06 UTC      days     @ 30 W
5001.3       40k                      10:00                   39222.0           Nov 22 2016 23:56:06 UTC    Nov 28 2016 17:20:44 UTC      days     @ 30 W (line was OFF and ON for Hardware INJ)  
Images attached to this report
Comments related to this report
jeffrey.kissel@LIGO.ORG - 09:05, Thursday 08 December 2016 (32360)
Note, PCALX was briefly turned OFF during this 4301.3 Hz stretch. See LHO aLOG 32323.
sudarshan.karki@LIGO.ORG - 10:25, Tuesday 13 December 2016 (32512)

Progress on Analysis:

The Pcal to DARM ratio for these individual lines were calculated using SLM Tool and the result is tabulated below. The Cavity pole and the optical gain on the last column are eyeballed measurement from the CalMon Tool . These time dependent corrections havenot been applied to the sensing function analysis yet.

Freq      Start Time               End Time            FFT       Real       Complex       Coh       CC Pole (O. Gain)

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

1001.3  30-Nov-2016 09:16:44    30-Nov-2016 13:47:04    10       0.022149   -0.358814   0.999589    346.05(0.9863)

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

1501.3  30-Nov-2016 17:28:11    30-Nov-2016 19:36:18    10      -0.017951   -0.109817   0.999943    346.05(0.9863)

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

2001.3  30-Nov-2016 19:36:53    30-Nov-2016 21:01:35    10      -0.015679   -0.044511   0.999391    346.05(0.9863)

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

2501.3  02-Dec-2016 07:52:51    02-Dec-2016 20:16:47    30      -0.011385   -0.020594   0.998321    347.69(0.9703)

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

3001.3  04-Dec-2016 02:27:58    05-Dec-2016 00:00:17    30      -0.007719   -0.010563   0.999057    347.06(0.9614)

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

3501.3  06-Dec-2016 02:27:26    06-Dec-2016 06:10:11    30      -0.005708   -0.005431   0.988492    350.70(0.9793)

3501.3  06-Dec-2016 10:36:18    06-Dec-2016 15:03:35    30                                          350.70(0.9793)

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

4001.3  12-Nov-2016 17:20:18    12-Nov-2016 20:49:17    60      -0.004374   -0.003211   0.996350    350.00(0.9966)

4001.3  12-Nov-2016 09:48:25    12-Nov-2016 16:40:53    60                                          350.00(0.9966)

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

4301.3  18-Nov-2016 05:20:00    18-Nov-2016 12:44:49    60      -0.003607   -0.002212   0.985922    345.04(0.9748)

4301.3  17-Nov-2016 14:26:40    17-Nov-2016 17:20:13    60                                          347.00(0.9730)

4301.3  17-Nov-2016 08:56:40    17-Nov-2016 11:07:35    60                                          347.00(0.9730)

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

4501.3  20-Nov-2016 05:00:00    20-Nov-2016 13:24:30    60      -0.003366   -0.002162   0.990728    350.76(0.9985)

4501.3  19-Nov-2016 15:40:00    19-Nov-2016 23:48:16    60                                          350.21(1.0017)

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

4801.3  22-Nov-2016 07:43:20    22-Nov-2016 16:01:44    60      -0.002883   -0.001369   0.959987    346.89(0.9890)

4801.3  21-Nov-2016 15:20:00    21-Nov-2016 18:22:20    60                                          346.71(0.9979)

4801.3  21-Nov-2016 04:36:40    21-Nov-2016 09:28:48    60                                          346.71(0.9979)

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

5001.3  25-Nov-2016 07:43:17    25-Nov-2016 14:52:54    60      -0.002634   -0.000904   0.973928    348.94(0.9625)

5001.3  27-Nov-2016 11:44:40    27-Nov-2016 18:04:12    60                                          345.48(0.9724)

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

 
Data Files:
aligocalibration/trunk/Runs/ER10/H1/Measurements/DARMOLGTFs/HF_2016-11-12_H1_DARM_OLGTF_A_DARMIN2_B_DARMIN1_coh.txt
aligocalibration/trunk/Runs/ER10/H1/Measurements/DARMOLGTFs/HF_2016-11-12_H1_DARM_OLGTF_A_DARMIN2_B_DARMIN1_tf.txt
aligocalibration/trunk/Runs/ER10/H1/Measurements/PCAL/HF_2016-11-12_H1_PCAL2DARMTF_A_PCALYRX_B_DARMIN1_tf.txt
aligocalibration/trunk/Runs/ER10/H1/Measurements/PCAL/HF_2016-11-12_H1_PCAL2DARMTF_A_PCALYRX_B_DARMIN1_coh.txt
 
Parameter Files:
aligocalibration/trunk/Runs/ER10/H1/params/HF_2016-11-12/
 
Script:
aligocalibration/trunk/Runs/ER10/H1/Scripts/SensingFunction/compareSensingHF.m
Non-image files attached to this comment
sudarshan.karki@LIGO.ORG - 09:14, Thursday 22 December 2016 (32833)

More detailed Analysis.

Non-image files attached to this comment
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