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Reports until 15:53, Saturday 07 November 2015
H1 General
edmond.merilh@LIGO.ORG - posted 15:53, Saturday 07 November 2015 (23196)
Shift Summary - DAY

TITLE:    Nov 6 DAY Shift 16:00-00:00UTC (08:00-04:00 PDT), all times posted in UTC

STATE Of H1: Observing

SUPPORT: Robert, Sudarshan

LOCK DURATION: ≈6.5 hrs (this shift)

INCOMING OPERATOR: Nutsinee

END-OF-SHIFT SUMMARY: IFO Locked most of shift. Robert on site doing some measurements concerning HVAC activity. Brief period of Lockloss for about 1.5 hours, reason unknown. Re-locking was only hindered by ISS second loop engaging. Sudarshan was on deck to help with that and direct me to an aLog entry to add to Ops Wiki. Microseism extends into .8um/s  territory. Handing off to Nutsinee.

 

ACTIVITY LOG:

16:10 Large wobble in ASC and Tidal that lasted for only ≈2 minutes. Perhaps due to the 4.9 EQ near Venezuela. Terramon issued an 08:23PST R-Wave of .35microns. This didn’t show in 30-100mHz bands and it was below the microseismicity but the timing was nearly coincidental.

18:55  Robert is going to be doing some HVAC variations while IFO is in Science Mode. See aLog #22532

20:30  A Critical Dust Alarm keeps occurring from the vacuum prep lab.

21:10  LockLoss

22:06  Sudarshan helped to troubleshoot ENGAGE_ISS_SECOND_LOOP step with the help of a Kiwamu aLog which has now been added into the Operators Troubleshooting Wiki.

22:09 IFO relocked and Intent bit set to Oberving

H1 General
edmond.merilh@LIGO.ORG - posted 14:10, Saturday 07 November 2015 (23195)
H1 returns to Science Mode!

22:09UTC

H1 General
edmond.merilh@LIGO.ORG - posted 13:13, Saturday 07 November 2015 (23194)
LockLoss

21:10UTC There doesn't seem to be an obvious reason for this, environmentally. Also, bringing the 1 hour stand down time to a slightly pre-mature end.

H1 General
edmond.merilh@LIGO.ORG - posted 12:27, Saturday 07 November 2015 - last comment - 12:31, Saturday 07 November 2015(23192)
H1 in 1 hour standown
Gamma Ray Burst (Nov 7 20:25:54 UTC)
Gamma Ray Burst (Nov 7 20:25:54 UTC)
The IFO is Locked and in Observation mode. 79.2Mpc.
Livingston is back up and Observing as well.
 
Comments related to this report
edmond.merilh@LIGO.ORG - 12:31, Saturday 07 November 2015 (23193)
Link

Robert had HVAC down at the occurrence of this alarm. He felt keeping it off for an hour wouldn't be a good idea.

H1 General
edmond.merilh@LIGO.ORG - posted 12:27, Saturday 07 November 2015 (23191)
Mid-Shift Summary - DAY

IFO Locked and observing @ 81.5Mpc. Robert has been doing some HVAC coupling testing/injections while in Science mode. Winds are still calm. µSei spiked to .9microns for a short while but is back down to .4. EQ bands haven’t risen above .1microns despite some minor earthquake activities in the Venezuela area. Robert, Jordan and now Sudarshan are on site.

H1 General
edmond.merilh@LIGO.ORG - posted 11:38, Saturday 07 November 2015 (23190)
CS temperature is low (Nov 7 19:31:09 UTC)

This occurred during Robert's HVAC testing.

Images attached to this report
H1 General
edmond.merilh@LIGO.ORG - posted 10:28, Saturday 07 November 2015 (23189)
1 hour Standown Period lifted
H1 General
edmond.merilh@LIGO.ORG - posted 09:29, Saturday 07 November 2015 (23188)
H1 in 1 hour standown

Gamma Ray Burst (Nov 7 17:28:42 UTC)

THe IFO is Locked and in Observation mode. 80Mpc.

Livingston is currently down with what looks like high microseism woes.

H1 General
edmond.merilh@LIGO.ORG - posted 08:15, Saturday 07 November 2015 (23187)
Shift Summary -Day Transition

TITLE: Nov 7 DAY Shift 16:00-23:00UTC (08:00-04:00 PDT), all times posted in UTC

STATE Of H1: Observing

OUTGOING OPERATOR: Patrick

QUICK SUMMARY: IFO is in Observing @ ≈80Mpc. Eq sei bands are all in the .2micron range. µSei is around .6µ. Wind is calm.. All light appear to be off in E, M, CS & PSL. CW injections are running. Cal lines are running. Livingston is having some troubles. 45M blends being used.

LHO General
patrick.thomas@LIGO.ORG - posted 08:00, Saturday 07 November 2015 (23186)
Ops Owl End Shift Summary 
TITLE: 11/07 [OWL Shift]: 08:00-16:00 UTC (00:00-08:00 PDT), all times posted in UTC
STATE Of H1: Locked. Observing @ ~ 80 MPc.
SHIFT SUMMARY: Started with IFO unlocked and earthquake ringing down. Had to restart the ops workstation when the local hard drive went into read only mode. Had trouble locking IMC after seismic had subsided. Tried clearing a bunch of filter histories. Ended up having to move MC2 mostly in pitch. Did an initial alignment. Trouble locking on DRMI and lock losses in later stages prompted me to move ISI blends to 45mHz. Got to NLN after this. Tried locking on PRMI at one point without success.
INCOMING OPERATOR: Ed
H1 General
patrick.thomas@LIGO.ORG - posted 06:27, Saturday 07 November 2015 (23185)
Observing 
Earthquake seismic band is between ~ 0.01 and 0.1 um/s. Microseism band is between ~ 0.2 and 1.0 um/s. Winds are between ~ 0 and 5 mph.
ISI blends are at 45mHz.
Range is ~ 81 MPc.

I accepted the SDF differences for the ISI blends and the change I made to the MC2 alignment. Small differences remained after I accepted the MC2 alignment changes (likely what Jonathan mentioned in his email about the difference in the precision recorded in the snapshot file and that reported by EPICS). I got around this by reverting the remaining small differences. See attached screenshots.
Images attached to this report
H1 SEI
patrick.thomas@LIGO.ORG - posted 05:38, Saturday 07 November 2015 (23183)
Switched ISI blends to 45mHz 


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


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			patrick.thomas@LIGO.ORG - posted 04:59, Saturday 07 November 2015 (23182)
			
			


		
		


		
		


			Done initial alignment
			
			


		
		


		
		


			


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


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			patrick.thomas@LIGO.ORG - posted 03:59, Saturday 07 November 2015 (23181)
			
			


		
		


		
		


			Starting initial alignment
			
			


		
		


		
		


			
Bad modes on AS AIR port. Not sure of affect of MC2 moving and if other optics did as well.


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


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			patrick.thomas@LIGO.ORG - posted 03:52, Saturday 07 November 2015 (23179)
			
			


		
		


		
		


			IMC locked
			
			


		
		


		
		


			
Finally. Mostly had to move MC2 in pitch.

Pitch 569.0 -> 511.1
Yaw -523.4 -> -526.0


			
			


		
		


		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


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			patrick.thomas@LIGO.ORG - posted 03:08, Saturday 07 November 2015  - last comment - 03:53, Saturday 07 November 2015(23178)
			
			


		
		


		
		


			operator0 local harddrive readonly
			
			


		
		


		
		


			
patrick.thomas@operator0:~$ dataviewer
mkdir: cannot create directory '/tmp/32331DC': Read-only file system

patrick.thomas@operator0:~$ touch /tmp/test
touch: cannot touch '/tmp/test': Read-only file system

Restarting workstation.


			
			


		
		






	
	


		Comments related to this report
		
		


	
	


	
	


		patrick.thomas@LIGO.ORG - 03:53, Saturday 07 November 2015 (23180)
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Restarting workstation fixed it.


		
		


	
	


	
	






		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


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			patrick.thomas@LIGO.ORG - posted 02:03, Saturday 07 November 2015  - last comment - 03:00, Saturday 07 November 2015(23176)
			
			


		
		


		
		


			Trouble locking IMC
			
			


		
		


		
		


			
Tried clearing MC1, MC2 and MC3 PIT/YAW WFS history. Not sure if this is still an earthquake problem. 0.03 - 0.1 Hz seismic band is still above .1 um/s.


			
			


		
		






	
	


		Comments related to this report
		
		


	
	


	
	


		patrick.thomas@LIGO.ORG - 03:00, Saturday 07 November 2015 (23177)
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Pretty sure it isn't the earthquake. Tried clearing IMC WFS DOF 1-5 P/Y filter histories. Trending back the position of the optics this appears to have made it worse.


		
		


	
	


	
	






		
		


	
	


	
	


		
		


			
			


		
		


		
		


			
			


		
		


		
		


	
	


	
	


		
		


			
			


				 H1 SUS 
(DetChar, SUS)				
				


			
			


			
			

			
			


		
		


		
		


			borja.sorazu@LIGO.ORG - posted 22:11, Friday 06 November 2015  - last comment - 20:17, Monday 09 November 2015(23167)
			
			


		
		


		
		


			QUAD Violin mode frequencies for 3rd and 4th harmonics
			
			


		
		


		
		


			

	NOTE: This entry is related to 22847 and 22959



	This entry is a summary of the 3rd and 4th harmonic frequencies of the QUAD suspensions violin modes. The frequency identification was done through 2 stages;



	1) First looking at a 1mHz resolution spectrum of channel H1:OMC-DCPD_SUM_OUT_DQ on 10800 seconds from 2015-10-28 12:00:00 (before the test mass injections described in 22959), total of 20 averages and 50% overlap. See plots attached. This gave a first approximate value of the frequencies.



	3rd harmonics (32 modes identified): Attached file: '3rd_Harmonics_from_Spectrum.txt'



	4th harmonics (30 modes identified): Attached file: '4th_Harmonics_from_Spectrum.txt'



	2) Second, feed the above frequencies to a line tracker (iWave) for a more accurate identification and over different data. In particular 21 hours of data with detector in Observing mode and with damping filters turned off, from 2015-10-21 21:30:00



	3rd harmonics (22 modes identified, notice that the reason for the smaller number of modes being identified is the automation applied to the line tracker in order to be able to process the big number of modes being tracked over a long data stream. For this reason the line tracker sometimes locked to the wrong mode of higher amplitude and or was not able to separate modes of high amplitude and proximity. The number of modes identified may improve by more targetted application of the tracker): Attached file: '3rd_Harmonics_from_LineTracker.txt'



	4th harmonics (25 modes identified): Attached file: '4th_Harmonics_from_LineTracker.txt'


			
			


		
		


		
		


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3rd_Harmonics_from_Spectrum.txt

			

			

				

				
4th_Harmonics_from_Spectrum.txt

			

			

				

				
3rd_Harmonics_from_LineTracker.txt

			

			

				

				
4th_Harmonics_from_LineTracker.txt

			

			
			


		
		


		
		






	
	


		Comments related to this report
		
		


	
	


	
	


		keith.riles@LIGO.ORG - 05:55, Saturday 07 November 2015 (23184)
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For reference, here are the compilations of tentative 3rd/4th quad harmonic frequencies
from 104.5 hours of early O1 data, using 0.5-mHz binning:

Q 1456.1793 1.109279e-18  *******
Q 1456.8448 4.093626e-19  *****
Q 1461.4125 3.152596e-19  *****
Q 1461.7318 1.663059e-17  **********
Q 1461.8627 2.275449e-19  *****
Q 1462.0311 9.120542e-17  ************
Q 1462.3129 1.442451e-16  *************
Q 1462.5991 1.951920e-18  *******
Q 1463.0994 1.613099e-17  **********
Q 1467.4759 9.898746e-18  *********
Q 1467.9648 1.940260e-16  *************
Q 1470.3809 7.576511e-17  ************
Q 1470.8263 1.099916e-16  *************
Q 1471.9279 1.821525e-16  *************
Q 1472.4505 9.761998e-17  ************
Q 1472.5268 7.321176e-18  *********
Q 1474.0800 1.401120e-16  *************
Q 1475.0976 3.710737e-17  ***********
Q 1475.2510 2.168896e-16  **************
Q 1476.3779 4.452248e-18  ********
Q 1478.1701 2.011867e-16  *************
Q 1478.6459 2.489583e-18  ********
Q 1482.5840 6.298267e-16  ***************
Q 1484.0765 3.847696e-16  **************
Q 1484.4293 7.193998e-18  *********
Q 1484.5241 2.194240e-16  **************
Q 1484.5731 1.033684e-17  **********
Q 1484.6685 2.331379e-16  **************

Q 1922.9259 4.402502e-18  ********
Q 1923.6124 2.213001e-17  ***********
Q 1923.8550 3.272046e-18  ********
Q 1923.8610 1.089465e-17  **********
Q 1924.6739 2.196115e-17  ***********
Q 1924.9150 1.129535e-17  **********
Q 1926.2402 9.830786e-17  ************
Q 1927.4652 5.627035e-18  *********
Q 1927.4662 5.627035e-18  *********
Q 1928.4620 1.166487e-17  **********
Q 1929.3128 2.991775e-18  ********
Q 1931.5738 2.536072e-18  ********
Q 1932.1391 1.111758e-17  **********
Q 1932.3359 3.306404e-17  ***********
Q 1932.6117 3.029987e-17  ***********
Q 1940.3232 3.044162e-18  ********
Q 1940.6643 2.881532e-17  ***********
Q 1941.3501 9.968986e-17  ************
Q 1942.1270 1.072596e-18  *******
Q 1942.1751 6.163310e-17  ************
Q 1942.3900 6.222474e-17  ************
Q 1943.7780 1.641306e-17  **********
Q 1944.1332 3.131086e-18  ********
Q 1946.7318 4.684879e-17  ************
Q 1947.7089 1.957731e-18  *******
Q 1954.4574 1.942626e-17  **********
Q 1955.9208 2.102610e-17  **********
Q 1957.3347 3.023210e-17  ***********
Q 1959.0215 4.312900e-17  ***********

where the 2nd number is the inverse-noise-weighted average displacement ASD, 
and the asterisks are a crude log-scale depiction of the ASD value. This table is
a subset of this earlier alog attachment:

https://alog.ligo-wa.caltech.edu/aLOG/uploads/21982_20150926195339_Lines_H1-CAL-DELTAL-EXT_O1-week1.txt

Although the frequencies are given to 0.1 mHz precision, I have seen them
vary in the past by as much as a few mHz over months time scales.




		
		


	
	


	
	


		borja.sorazu@LIGO.ORG - 20:17, Monday 09 November 2015 (23262)
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	Thank you Keith. I was aware of this frequency list however I noticed that several modes were missing. In principle if mode frequencies do not overlap then we should expect 32 modes per harmonic. In my manual check of the 3rd harmonic frequencies I identified 32 frequency candidates with a few others of small amplitude. In comparison with your list I can confirm that your list misses several 3rd harmonic modes:



	There are two very close modes at 1463.097 and 1463.101 Hz, your list only identifies one mode from this pair at 1463.0994Hz. Also your list misses the mode at 1472.217Hz.



	In relation to the 4th harmonic: Your list shows a repeat peak at 1927.465Hz, although it assigns a 1 mHz difference between the 2 peaks the amplitude is identical so it looks as if it is actually a single peak.



	Notice that the main reason of my analysis is not just to identify the violin mode frequencies but to actually measure their Q (through exponential decay) which I will report in another aLog which I am writting at the moment.



	 



	UPDATE ON ORIGINAL ENTRY:



	Some of the peaks I originally identified as 3rd and 4th harmonics from the 1mHz resolution spectrum plots are not violin modes, as verified after careful analysis of their exponential decay with a line tracker (iWave).



	3rd harmonic identified modes: 30 with Spectrum of 1mHz resolution, the line tracker locked properly to only 25.



	4th harmonic identified modes: 26 with Spectrum of 1mHz resolution, the line tracker locked properly to only 25.



	For completion I provide next the frequencies of the identified modes, on a table of 3 columns, the first column are the frequencies given by Keith, the second column are the frequencies as per the 1mHz spectrums shown in this entry and the third column are the median frequency tracked by a line tracker on 21 hours of data. The zeros are missing information from each list:



	         Keith_table           1mHz_res_spectrum    Line_tracker_21hours_data



	   1.0e+03 *

	   1.456179300000000   1.456180344722471   1.456177151198640

	   1.456844800000000   1.456847712651581   1.456842618595428

	   1.461412500000000   1.461413707108750   1.461409317387718

	   1.461731800000000   1.461733620917401   1.461732469282266

	   1.461862700000000   1.461861606048793   1.461859532596437

	   1.462031100000000   1.462032270322383   1.462031865574721

	   1.462312900000000   1.462313909933999   1.462313301797892

	   1.462599100000000   1.462599872305624   1.462596623730558

	   1.463099400000000   1.463097080131224   1.463096689345246

	                                  0   1.463100546759006   1.463100039151534

	   1.467475900000000   1.467476228900213   1.467475846153371

	   1.467964800000000   1.467965366395409   1.467964868969873

	   1.470380900000000   1.470381699013083   1.470380789546349

	   1.470826300000000   1.470827285183412   1.470826225123052

	   1.471927900000000   1.471929276656110   1.471928631371064

	                                  0   1.472217057788634   1.472216372878212

	   1.472450500000000   1.472451085888389   1.472450299085779

	   1.472526800000000   1.472528816242792                   0

	   1.474080000000000   1.474080396944674   1.474079862541953

	   1.475097600000000   1.475099020030272   1.475097416001178

	   1.475251000000000   1.475252651191380   1.475251394384721

	   1.476377900000000   1.476379150480257                   0

	   1.478170100000000   1.478170077745102   1.478169573722027

	   1.478645900000000   1.478646456410533                   0

	   1.482584000000000   1.482587879011576   1.482585385731902

	   1.484076500000000   1.484082047455499   1.484077440343936

	   1.484429300000000   1.484431224630876                   0

	   1.484524100000000   1.484525638863272   1.484525699339724

	   1.484573100000000   1.484573390876472                   0

	   1.484668500000000   1.484669984871669   1.484668763161195



	

	   1.922925900000000   1.922927022647360   1.922925588791648

	   1.923612400000000   1.923613112500675   1.923612097950808

	   1.923855000000000   1.923855111277119   1.923854588725318

	   1.923861000000000   1.923862018275805   1.923861256988942

	   1.924673900000000   1.924674100071188   1.924673358918374

	   1.924915000000000   1.924915873423103   1.924914735873632

	   1.926240200000000   1.926241192663720   1.926240582396548

	   1.927465200000000   1.927466117175330   1.927465533945791

	   1.927466200000000                   0                   0

	   1.928462000000000   1.928465010303079   1.928461858686449

	   1.929312800000000   1.929315906067996   1.929312798521826

	   1.931573800000000   1.931575488954602   1.931573475268973

	   1.932139100000000   1.932140403468284   1.932139817442099

	   1.932335900000000   1.932335886291686   1.932335653144635

	   1.932611700000000   1.932611738162179   1.932612502374920

	   1.940323200000000   1.940327437428355   1.940322842326236

	   1.940664300000000   1.940668395302165   1.940663844123977

	   1.941350100000000   1.941355862583405   1.941349656248626

	   1.942127000000000                   0                   0

	   1.942175100000000   1.942176424197661   1.942174876991754

	   1.942390000000000   1.942391628419225   1.942390477296026

	   1.943778000000000   1.943779225301499   1.943777686818187

	   1.944133200000000   1.944135400000000                   0

	   1.946731800000000   1.946734993919390   1.946732788506648

	   1.947708900000000                   0                   0

	   1.954457400000000   1.954461746453794   1.954459288744910

	   1.955920800000000   1.955924562578534   1.955921817650888

	   1.957334700000000   1.957335449254732   1.957335075248596

	   1.959021500000000   1.959024110148374   1.959023577426715


		
		


	
	






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