Displaying reports 46401-46420 of 83544.Go to page Start 2317 2318 2319 2320 2321 2322 2323 2324 2325 End
Reports until 16:28, Tuesday 15 August 2017
H1 General
jeffrey.bartlett@LIGO.ORG - posted 16:28, Tuesday 15 August 2017 (38219)
Ops Evening Shift Transition
Ops Shift Transition: 08/15/2017, Evening Shift 23:00 – 07:00 (16:00 - 00:00) - UTC (PT)
State of H1: Locked at NLN, power 28.9w, 49.3Mpc 
Intent Bit: Commissioning
Weather: Light scattered clouds gracing clear blue skies. Wind is a Calm to Light breeze. Temperatures in the mid-80s.   
Primary 0.03 – 0.1Hz: X and Y Axis at 0.02um/s, Z Axis at 0.009um/s
Secondary 0.1 – 0.3Hz: At 0.04um/s
Quick Summary: IFO is relocked after maintenance window. Damped PI Modes 27 and 28. Running A2L repair script before going back into observing.
Outgoing Operator: Cheryl
H1 General
cheryl.vorvick@LIGO.ORG - posted 16:03, Tuesday 15 August 2017 (38217)
Ops Day Summary:

TITLE: 08/15 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Commissioning
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:
LOG:

H1 PSL
edmond.merilh@LIGO.ORG - posted 15:54, Tuesday 15 August 2017 (38196)
PSL Weekly Report - 10 Day Trends FAMIS #6161

Everything looks fine. Noticeable adjustments in weekly diode current. Sudden changes in chiller plots have been discussed with Jeff B and Jason O. He says it could be related to the slight drop in XCHILFLOW. Jeff also said he's seen this before.

Images attached to this report
H1 General
cheryl.vorvick@LIGO.ORG - posted 15:31, Tuesday 15 August 2017 (38216)
Maintenance:

All times UTC:

Changes/Issues:

Currently:

To Do:

H1 CDS
david.barker@LIGO.ORG - posted 14:52, Tuesday 15 August 2017 (38215)
EY Beckhoff Slow Controls SDF pseudo-front-ends restarted

Following the reboot of h1ecaty1, the three pseudo-front-end models which provide SDF for this machine unexpectedly died. The models run on h1build as user controls (h1build becuase currently the code only runs on Gentoo). These pseudo models use out-of-band DCU numbers, for EY these are 1030, 1031, 1032 for PLC1, PLC2 and PLC3 respectively.

The restart instructions can be found in the wiki page:

https://cdswiki.ligo-wa.caltech.edu/wiki/UpdateChanListBeckhoffSDFSystems

ssh controls@h1build (standard password applies)

starth1sysecaty1plc1epics

starth1sysecaty1plc2epics

starth1sysecaty1plc3epics

 

 

 

 

H1 CDS
filiberto.clara@LIGO.ORG - posted 14:47, Tuesday 15 August 2017 (38214)
SQZ RF Cabling

RF Heliax cable was pulled from the CER to HAM6 racks. Part of the SQZ installation. A total of 16 runs were pulled:

1. 12 cable runs will go from ISC-C3 rack to SQZ-R1 rack.
2. 4 cables runs will go from ISC-C4 to ISC-R3.

Cables in the CER are not dressed to appropriate cable tray/rack. Cables are laying on the floor and people should use caution when entering the CER. Work will continue next Tuesday.

F. Clara, E. Merilh, M. Pirello, R. McCarthy, S&K

LHO VE
chandra.romel@LIGO.ORG - posted 13:44, Tuesday 15 August 2017 (38211)
PT-114

Cold cathode gauge PT-114 tripped today at 18:17 UTC (located at CP1 in LVEA). Restarted at 20:40 UTC.

LHO VE
chandra.romel@LIGO.ORG - posted 13:41, Tuesday 15 August 2017 (38210)
EX & LX nitrogren exhaust line insulated

Contractor removed ice build up and installed insulation on outside nitrogen exhaust pipe at CP2 (corner) and CP8 (EX) this morning. They will finish up at CP1 and CP7 next Tuesday.

The motivation is to prevent ice build up and noise-generating bird pecking.

H1 General
cheryl.vorvick@LIGO.ORG - posted 13:03, Tuesday 15 August 2017 (38208)
most of Maintenance is complete - two tasks continue

Currently: 

X1 SUS
thomas.shaffer@LIGO.ORG - posted 12:57, Tuesday 15 August 2017 (38207)
LHO VOPO Suspension Assembly Update

Posted in TST logbook 11356.

Quick summary: Ready to pull blades and suspend, just need the tooling.

LHO VE
kyle.ryan@LIGO.ORG - posted 12:07, Tuesday 15 August 2017 (38206)
~1120 hrs. local -> Removed ladder which had been leaning against BSC9 since Aug. 8th 


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


				 H1 PEM 
				
				


			
			


			
			

			
			


		
		


		
		


			cheryl.vorvick@LIGO.ORG - posted 11:37, Tuesday 15 August 2017 (38203)
			
			


		
		


		
		


			PSL dust monitor 102 restarted 
			
			


		
		


		
		


			
I restarted Dust Monitor #102 in the PSL Ante-room.  Blue numbers for sample time and hold time needed to be set by hand.  Readings are good as of 17:45UTC.


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


				 H1 CDS 
(DAQ)				
				


			
			


			
			

			
			


		
		


		
		


			david.barker@LIGO.ORG - posted 11:08, Tuesday 15 August 2017  - last comment - 12:06, Tuesday 15 August 2017(38202)
			
			


		
		


		
		


			h1nds0 rebooted, sped up DIAG_MAIN
			
			


		
		


		
		


			
Dave, TJ:



DIAG_MAIN was running slowly if it was asking for averages from h1nds0. I could not see any issues with h1nds0 with regards to cpu, memory or syslogs, but we rebooted it anyways and DIAG_MAIN sped back up. h1nds0 had been running since 1st May 2017.


			
			


		
		






	
	


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		thomas.shaffer@LIGO.ORG - 12:06, Tuesday 15 August 2017 (38205)GRD
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This sped the exec time from ~7sec to ~0.2sec. I have rarely seen it this fast and I had to slightly change two of the tests to handle this. I also cleaned up a few of the tests and old tests while I was in there.



Edit: Forgot to attach the 5day trend of the exec time for future reference.


		
		


	
	






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				 H1 SUS 
(DetChar, ISC, SUS, VE)				
				


			
			


			
			

			
			


		
		


		
		


			jeffrey.kissel@LIGO.ORG - posted 10:29, Tuesday 15 August 2017 (38200)
			
			


		
		


		
		


			Charge Measurement Update: ETMY Remains High, Continues to Get Worse
			
			


		
		


		
		


			
J. Kissel

Your weekly charge update: Same as last week -- ETMY is slowly getting worse (our high duty cycle means we're too often holding on one bias voltage sign), and ETMX is fine. Longitudinal actuation strength relative to Jan 2017 for ETMY is upwards of 8-9%. The usual plots are attached.


			
			


		
		


		
		


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				 H1 SUS 
(CDS, DetChar, ISC, SUS)				
				


			
			


			
			

			
			


		
		


		
		


			jeffrey.kissel@LIGO.ORG - posted 10:10, Tuesday 15 August 2017  - last comment - 16:53, Tuesday 12 September 2017(38198)
			
			


		
		


		
		


			H1 QUAD CPU Cycle Turn Around Time during O2
			
			


		
		


		
		


			
J. Kissel, D. Barker

Posting some data to support a future ECR to add more violin mode banks to the QUADs, here's the CPU Cycle Turn Around Time during O2 for the front-end models that run the QUADs. The ITMs have been running around 42-45 [usec], and the ETMs have been running around 32-33 [usec] during O2 (see first attachment).

Remember, two things have happened that have *reduced* the CPU turn-around time over the past few years (see second attachment):
- the end-station front-end computers were upgrade to better CPUs back in Feb 2016 (see LHO aLOG 25474); prior to that they'd typically run at around ~55 [usec].
- All QUAD model's data storage list was pruned in Oct 2016 (see LHO aLOG 30821). This knocked about 10-15 usec off of the ITM time, and a further ~2-3 [sec] off of the ITMs.

In short: there should be plenty of CPU time to add oodles of violin mode damping filters.


			
			


		
		


		
		


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		david.barker@LIGO.ORG - 10:15, Tuesday 15 August 2017 (38199)
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and of course we could install the faster computer for h1susb123


		
		


	
	


	
	


		jeffrey.kissel@LIGO.ORG - 16:53, Tuesday 12 September 2017 (38619)CDS
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D. Barker, J. Kissel

I (and Norna, and Dennis) asked Dave if we could better quantify "there should be plenty of CPU time to add oodles of violin mode damping filters."

As such, he says (via email) 
   On Sep 6, 2017, at 4:39 PM, David Barker  wrote:  
   [...]

   For my first set of tests I took the ITMX_L2_DAMP_MODE10 [, an example, 
   fully loaded, in-use violin] filter module and duplicated it 32 times 
   on two test models: x1susdactest and x1susfiltertest.
   [piping junk data into the input of the bank to make sure the filters
    were computing on something]

   x1susdactest was already running of the fast computer x1susex (doing my 
   18bit-DAC testing). I then made a copy of this model for x1susfiltertest, 
   which ran on the slow computer x1sush34.

   x1susex  = Intel Xeon E5-2690 v2 @ 3.00GHz (fast 10-core computer)
   x1sush34 = Intel Xeon X5680 @ 3.33GHz (slow 6-core computer)

   cpu		no filters		32 filters
   slow		3uS			7uS
   fast		4uS			7uS

   not much in it for 32 filter modules, about 1uS increase for every 10 FMs loaded.
   [...]

So, extrapolating Dave's data, if we want to increase from 10 to 40 violin mode filters, that would be adding 3 [us] to the clock cycle turn around time.

As Dave mentions, we'll likely switch h1susb123 over to the faster computer type he mentions, which means the ITMs (which had high turn-around at 42-45 [us]) will run more like the ETMs did during the tail end of O2, at ~32-33 [us].

That means for ETMs and ITMs, with the inclusion of these extra filters, the turn-around time would likely only increase to 36-37 [us], indeed still with plenty of head room against the limit of 61 [us].



		
		


	
	


	
	






		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


				 H1 PSL 
				
				


			
			


			
			

			
			


		
		


		
		


			jason.oberling@LIGO.ORG - posted 09:54, Tuesday 15 August 2017 (38197)
			
			


		
		


		
		


			PSL PMC Beam Alignment Tweak (WP 7108)
			
			


		
		


		
		


			
I tweaked the beam alignment into the PMC; the ISS was OFF for this.  I was able to get the reflected power down to ~16.5 W from ~17.5 W.  I think we are being limited by mode matching here, as the mode out of the HPO has likely changed (especially since the diode box swap).  With the ISS back ON, the PMC is transmitting 57.2 W and reflecting 16.5 W.  This completes LHO WP 7108.


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


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			corey.gray@LIGO.ORG - posted 08:28, Tuesday 15 August 2017  - last comment - 11:38, Tuesday 15 August 2017(38193)
			
			


		
		


		
		


			Owl Shift Summary
			
			


		
		


		
		


			
TITLE: 08/15 Owl Shift: 07:00-15:00 UTC (00:00-08:00 PST), all times posted in UTC

STATE of H1: Observing at 53Mpc

INCOMING OPERATOR: Cheryl

SHIFT SUMMARY:



RED "RMS WD" on the Ops Overview, sounds like it is more of a bug on the Ops Overview.



L1 & V1 went down at around 14:00 & now H1 is set for Maintenance.

LOG:




			
			


		
		






	
	


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		cheryl.vorvick@LIGO.ORG - 11:38, Tuesday 15 August 2017 (38204)
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Maintenance started at 15:00UTC


		
		


	
	


	
	






		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


				 H1 CAL 
(CAL)				
				


			
			


			
			

			
			


		
		


		
		


			travis.sadecki@LIGO.ORG - posted 16:46, Tuesday 08 August 2017  - last comment - 13:42, Tuesday 15 August 2017(38090)
			
			


		
		


		
		


			PCal End Station Calibrations
			
			


		
		


		
		


			
Both X and Y End Stations had their pre-end-of-O2 calibration measurements today.  Full results can be found for: EndX and EndY.  The resulting PCal Force Coefficients are:



Currently used O2 force coefficients:



     LHOX: none, not used



     LHOY: RxPD = 1.0475e-9 N/V



               TxPD = 1.5160e-9 N/V



This measurement:



     LHOX: RxPD = 1.0473e-9 N/V



                TxPD = 1.3164e-9 N/V



     LHOY: RxPD = Not calculated due to clipping



               TxPD = 1.5202e-9 N/V



Note: The values I list for "This measurement" don't match what is shown in the results found at the links posted above.  This is due to the fact that we calculated these numbers by hand since they are corrected for optical efficiency, which we know to be an issue related to the known clipping.  We used the optical efficiency that was measured in previous measurements before clipping started. 



For LHOY TxPD, this give us 0.28% variation between this measurement and the O2 epics value.



 


			
			


		
		






	
	


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		travis.sadecki@LIGO.ORG - 13:42, Tuesday 15 August 2017 (38209)
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Log sheets for this round of calibrations attached.


		
		


	
	






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