Displaying reports 49121-49140 of 83228.Go to page Start 2453 2454 2455 2456 2457 2458 2459 2460 2461 End
Reports until 00:16, Monday 27 March 2017
LHO General
patrick.thomas@LIGO.ORG - posted 00:16, Monday 27 March 2017 (35097)
Ops Owl Shift Transition
TITLE: 03/27 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 7mph Gusts, 5mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.24 μm/s 
QUICK SUMMARY:

No issues to report.
H1 General
cheryl.vorvick@LIGO.ORG - posted 00:13, Monday 27 March 2017 (35096)
Ops Eve Summary:

TITLE: 03/27 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 70Mpc
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: locked
LOG: 04:02:20UTC, a glitch seen in BS Oplev

H1 General
cheryl.vorvick@LIGO.ORG - posted 16:42, Sunday 26 March 2017 (35093)
Ops Eve Transition:

TITLE: 03/26 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Jim
CURRENT ENVIRONMENT:
    Wind: 7mph Gusts, 5mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.23 μm/s
QUICK SUMMARY: locked 22 hours, steady range

H1 General
jim.warner@LIGO.ORG - posted 15:48, Sunday 26 March 2017 (35092)
Shift Summary

TITLE: 03/26 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 70Mpc
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY:
LOG:

Lock is 21+hours old, everything was pretty quiet today.

LHO General
patrick.thomas@LIGO.ORG - posted 08:01, Sunday 26 March 2017 (35091)
Ops Owl Shift Summary
TITLE: 03/26 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: Jim
SHIFT SUMMARY: Only out of observing to run a2l when LLO lost lock.
LOG:

11:38 UTC LLO lost lock. Out of observing to run a2l.
11:44 UTC a2l done. Back to observing.
11:45 UTC GRB
LHO General
patrick.thomas@LIGO.ORG - posted 04:00, Sunday 26 March 2017 (35090)
Ops Owl Mid Shift Summary
Have remained in observing. No issues to report.
LHO General
patrick.thomas@LIGO.ORG - posted 23:58, Saturday 25 March 2017 (35089)
Ops Owl Shift Transition
TITLE: 03/26 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 65Mpc
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 4mph 5min avg
    Primary useism: 0.02 μm/s
    Secondary useism: 0.22 μm/s 
QUICK SUMMARY:

No issues to report.
H1 General
cheryl.vorvick@LIGO.ORG - posted 23:49, Saturday 25 March 2017 (35088)
Ops Eve Summary:

TITLE: 03/26 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: 

H1 General
cheryl.vorvick@LIGO.ORG - posted 20:54, Saturday 25 March 2017 (35087)
Lockloss plot from 01:05UTC

OMC DC SUM and DHARD Y seem to glitch at the same time

Images attached to this report
H1 General
cheryl.vorvick@LIGO.ORG - posted 19:51, Saturday 25 March 2017 - last comment - 09:29, Monday 27 March 2017(35085)
H1 glitch, Verbal Alarms shows OMC DCPD Saturation, but date and time are incorrect, maybe the claimed source of the glitch is too
Images attached to this report
Comments related to this report
thomas.shaffer@LIGO.ORG - 09:29, Monday 27 March 2017 (35107)OpsInfo

This is a classic case of "Middle-Click Syndrome". Someone highlighted that OMC DCPD line in the Verbal Terminal and then accidentally middle clicked later. I checked this by first checking the Verbal logs to make sure it wasn't in there, and then I went to the alarms work station and middle clicked in the Verbal Terminal. Sure enough, the same March 10 OMC DCPD saturation message showed up.

H1 General
cheryl.vorvick@LIGO.ORG - posted 19:39, Saturday 25 March 2017 - last comment - 13:13, Monday 27 March 2017(35086)
Control Room computers powered off

About an hour after coming on shift I noticed something in the CR air and put on my mask, but after a while it was clear that that didn't help, so I started looking for other things, and realized it sort of smelled like burnt plastic.  Called Corey, Richard, Dave, and a couple other people.  Turned off most of the CR computers (about 4 warm ones), checked the MSR, checked the Computer user's room, and the smell was only in the CR.  Tried to contact Robert, waited, but then turned off his computer, and am now waiting to see if that computer was overheating, and if turning it off clears up the air.

Currently watching H1 from the Computer Users Room, and have Verbal Alarms running in here.

Comments related to this report
david.barker@LIGO.ORG - 13:13, Monday 27 March 2017 (35112)

we were not able to pin down where the odor was coming from, and there are no odors today.

H1 General
cheryl.vorvick@LIGO.ORG - posted 19:20, Saturday 25 March 2017 (35084)
Ops Eve Transition:

TITLE: 03/26 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 68Mpc
OUTGOING OPERATOR: Jim
CURRENT ENVIRONMENT:
    Wind: 8mph Gusts, 6mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.25 μm/s
QUICK SUMMARY:

H1 General
jim.warner@LIGO.ORG - posted 16:08, Saturday 25 March 2017 (35083)
Shift Summary

TITLE: 03/25 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Cheryl
SHIFT SUMMARY:
LOG:
Quiet shift. Nothing to report. Amber was on site about 21:00 with a tour. Robert has been on site waiting patiently for LLO to go down.

LHO General
patrick.thomas@LIGO.ORG - posted 07:53, Saturday 25 March 2017 (35082)
Ops Owl Shift Summary
TITLE: 03/25 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: Jim
SHIFT SUMMARY: Observing entire shift. No issues to report.
LOG:

07:57 UTC GRB
13:42 UTC Changed sign of gain to damp PI mode 27
LHO General
patrick.thomas@LIGO.ORG - posted 04:01, Saturday 25 March 2017 (35081)
Ops Owl Mid Shift Summary
Have remained in observing. No issues to report.
LHO General
patrick.thomas@LIGO.ORG - posted 00:06, Saturday 25 March 2017 (35080)
Ops Owl Shift Transition
TITLE: 03/25 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC
STATE of H1: Observing at 61Mpc
OUTGOING OPERATOR: Cheryl
CURRENT ENVIRONMENT:
    Wind: 9mph Gusts, 6mph 5min avg
    Primary useism: 0.03 μm/s
    Secondary useism: 0.30 μm/s 
QUICK SUMMARY:

No issues to report.
H1 General
cheryl.vorvick@LIGO.ORG - posted 23:54, Friday 24 March 2017 (35079)
Ops Eve Summary:

TITLE: 03/25 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
INCOMING OPERATOR: Patrick
SHIFT SUMMARY: one lock loss, easy relocking
LOG:

Images attached to this report
H1 SUS (ISC, PEM, SUS)
suresh.doravari@LIGO.ORG - posted 23:49, Friday 24 March 2017 (35077)
Oplev laser work : PCal room temperature matched to Y-End VEA

[Suresh D, Bubba G, Jason O, Rick S., Sudarshan G]

We have seen that a non-glitchy oplev laser could be pushed into a glitchy behaviour if the ambient temperature changes.  Since we presently tune the lasers for single-mode (non-glitchy) operation in the PCal lab and then transport them to their respective oplev locations, we are required to retune their power in-situ to recover glitch-free behaviour.  This is often a time consuming process.  We therefore wished to be able to set the PCal room to the temperature of LVEA (or XVEA or YVEA as needed) so that we may be able to increase the reliability of this process and reduce the time needed to tune them in-situ.

At this time the two end-station VEAs in LHO have glitchy lasers.  We therefore wish to replace these with tuned lasers at the earliest opportunity.   We measured the temperature of these VEAs.

End station temperature
 Location time temperature remarks
Y VEA 23Mar2017 12:10PM 66.1 degF 15mins wait time for T to settle [SD, BG]
X VEA 23Mar2017 03:18PM 66.5 degF  15 mins waiting time. T oscillates between 66.3 to 66.8 degF in ~5mins [SD,RS,SG]

 

 

 

 

 

 

Bubba reset the air-conditioning control settings in the LSB labs, so that we can set the PCal lab temperature to required value.

We have prepared three lasers for glitch free operation. [SD, JO].  One of them is presently ready for installation at Y-end (tuned at 66.1 degF room temperature).  See attached pics for further details.  

Two others lasers are under preparation for installation at X-end and possibly BS.

Note: The same thermocouple sensor (Fluke hand-held device) was used  at all locations to avoid calibration differences between various wall mounted sensors at these locations.

 

 

Images attached to this report
H1 General
cheryl.vorvick@LIGO.ORG - posted 23:13, Friday 24 March 2017 (35078)
Ops Eve Update:

TITLE: 03/25 Eve Shift: 23:00-07:00 UTC (16:00-00:00 PST), all times posted in UTC
STATE of H1: Observing at 67Mpc
OUTGOING OPERATOR: TJ
CURRENT ENVIRONMENT:
    Wind: 19mph Gusts, 17mph 5min avg
    Primary useism: 0.04 μm/s
    Secondary useism: 0.32 μm/s
QUICK SUMMARY: locked in Observe

H1 IOO (IOO)
cheryl.vorvick@LIGO.ORG - posted 11:06, Friday 13 December 2013 - last comment - 19:39, Sunday 26 March 2017(8943)
IMC beam spot centering measurement - all beam spots within 2.3mm of center.

I calculated the spot centering on the IMC mirrors, with help from Kiwamu and Jax (alog #6676).

All beam spots are with 2.3mm on center on all 3 mirrors, which is slightly better than what Jax measured in June.

 

Beam Centering Measurements: 12/12 P2L/Y2L gain smallest peak amplitude EL/EP alpha alpha in % distance from center of mirror, in mm
      0.25/5.2382 (EL/EP)*P2L/Y2L gain   % * 0.375
             
MC1            
P -0.90 0.05 0.048 -0.043 -4.3 -1.6
Y 0.60 0.30 0.048 0.029 2.9 1.1
             
MC2            
P -1.30 0.05 0.048 -0.062 -6.2 -2.3
Y -1.00 0.50 0.048 -0.048 -4.8 -1.8
             
MC3            
P 0.85 0.12 0.048 0.041 4.1 1.5
Y -1.10 0.05 0.048 -0.052 -5.2 -2.0
Comments related to this report
cheryl.vorvick@LIGO.ORG - 19:39, Sunday 26 March 2017 (35095)

I'm revisiting beam centering measurements, and have recalculated the beam centering logged here, based on my enhanced knowledge, and with both the procedure used in 2013 and in 2017.

My sign conventions in this 2013 alog are incorrect, and I'm now correcting them, and posting values using both the 2013 and 2017 procedure.

In 2013, though it's not stated, I used the Eul2OSEM values that match the UR OSEM, which matches the procedure I used in 2017, alog 34973

Updated Results (details in attached pdf):

Non-image files attached to this comment
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