Displaying reports 57601-57620 of 83007.Go to page Start 2877 2878 2879 2880 2881 2882 2883 2884 2885 End
Reports until 17:21, Wednesday 16 March 2016
H1 ISC (ISC)
hang.yu@LIGO.ORG - posted 17:21, Wednesday 16 March 2016 - last comment - 18:21, Wednesday 16 March 2016(26105)
calibrated sensing matrix at 2.1 W

Sheila, Hang

AS port:

AS_A_36
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 7.56e+2 1.19e+1 4.02e+1 2.09e+2 0 3.37e+1 2.64e+1 2.50e+2 2.04e+2 1.38e-2 3.13e+1 5.92e-3
Demod phase, [deg] -67 30 43 52 N/A -155 24 111 -62 -108 17 -73
Noise floor, [rad/Hz^{1/2}] 5.4e-13 3.4e-11 1.0e-11 1.96e-12 inf 1.2e-11 1.6e-11 1.6e-12 2.0e-12 3.0e-8 1.3e-11 6.9e-8

 

AS_B_36
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 6.94e+2 3.24e+1 3.58e+1 9.15e-1 2.12e+2 5.44e+1 4.52e+1 2.32e+2 1.85e+2 1.7e-2 5.65e+1 4.43e-3
Demod phase, [deg] -91 -168 25 -40 3 -8 172 88 -100 49 -170 116
Noise floor, [rad/Hz^{1/2}] 8.1e-13 1.74e-11 1.6e-11 6.2e-10 2.7e-12 1.0e-11 1.2e-11 2.4e-12 3.1e-12 3.3e-8 1.0e-11 1.3e-7

 

AS_A_45
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 2.01e+2 2.83e+1 4.34e+1 1.80e+2 1.28e+0 1.83e+2 2.47e+2 1.58e+2 2.78e+3 1.66e-3 4.76e+0 1.38e-3
Demod phase, [deg] -48 -86 -92 -91 92 45 44 -115 -87 133 -26 63
Noise floor, [rad/Hz^{1/2}] 3.4e-13 2.4e-12 1.5e-12 3.7e-13 5.2e-11 3.7e-13 2.7e-13 4.24e-13 2.4e-14 3.9e-8 1.4e-11 4.9e-8

 

AS_B_45
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 1.43e+2 3.75e+1 2.00e+1 8.57e+0 1.52e+2 2.29e+2 2.92e+2 1.55e+2 2.53e+3 2.00e-3 1.37e+1 1.85e-3
Demod phase, [deg] 132 87 -104 86 -91 -111 -113 71 87 -62 112 -108
Noise floor, [rad/Hz^{1/2}] 3.7e-13 1.4e-12 2.6e-12 6.0e-12 3.4e-13 2.2e-13 1.8e-13 3.3e-13 2.0e-14 2.6e-8 3.7e-12 2.8e-8

 

AS_A_DC
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] -9.8e+1 -2.1e+1 -3.1e+1 -1.3e+2 0 4.4e+1 3.5e+1 -4.8e+1 -9.8e+2 0 1.7e+0 5.2e-4
Noise floor, [rad/Hz^{1/2}] 2.2e-12 1.0e-11 7.1e-12 1.7e-12 inf 5.0e-12 6.3e-12 4.6e-12 2.2e-13 inf 1.3e-10 4.2e-7

 

AS_B_DC
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 4.9e+1 2.3e+1 -1.3e+1 2.2e0 -1.0e2 -4.5e+1 0 3.6e+1 7.3e+2 -2.5e-3 1.2e+1 1.6e-3
Noise floor, [rad/Hz^{1/2}] 5.7e-12 1.2e-11 2.2e-11 1.3e-10 2.8e-12 6.2e-12 inf 7.8e-12 3.8e-13 1.1e-7 2.3e-11 1.8e-7

 

 

AS_A_RF90
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 4.9e+1 0 0 -2.2e0 0 0 0 0 0 0 1.0e+0 0
Noise floor, [rad/Hz^{1/2}] 3.3e-11 inf inf 7.4e-10 inf inf inf inf inf inf 1.6e-9 inf

 

AS_B_RF90
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 0 1.5e+0 0 0 -6.7e+0 0 0 0 0 0 3.6e-1 0
Noise floor, [rad/Hz^{1/2}] inf 8.6e-10 inf inf 1.9e-10 inf inf inf inf inf 3.6e-9 inf

 

AS_C
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
Transfer Function, [W/rad] 2.1e+1 8.8e+0 -1.6e+1 6.3e-1 0 -1.1e+1 1.9e+1 5.7e+0 1.7e+2 -1.5e-3 8.3e+0 8.1e-4
Noise floor, [rad/Hz^{1/2}] 2.6e-12 6.3e-12 3.5e-11 8.8e-11 inf 5.0e-12 2.9e-12 9.7e-12 3.2e-13 3.7e-8 6.7e-12 6.8e-8
Comments related to this report
hang.yu@LIGO.ORG - 18:21, Wednesday 16 March 2016 (26108)ISC

At REFL port:

REFL_A_RF45
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
[W/rad] 1.5e+2 7.5e+0 2.7e+1 0 0 0 4.1e+2 0 0 3.8e-2 2.4e+1 4.9e-1
[deg] -137 -9 172       13     174 21 -169
[rad/Hz^{1/2}] 2.4e-12 4.9e-11 1.4e-11 inf inf inf 9.0e-13 inf inf 9.7e-9 1.5e-11 7.5e-10

 

REFL_B_RF45
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W/rad] 1.3e+2 9.0e+0 2.3e+1 0 0 1.2e+1 4.1e+2 2.0e+1 0 2.8e-2 4.7e+1 4.2e-1
dmd phase [deg] -129 -122 54     -37 19 -138   37 25 20
noise [rad/Hz^{1/2}] 2.8e-12 4.1e-11 1.6e-11 inf inf 3.1e-11 8.9e-13 1.8e-11 inf 1.3e-8 7.8e-12 8.7e-10

 

REFL_A_RF9
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W/rad] 6.8e+1 0 0 0 0 3.2e+1 4.0e+2 0 0 0 2.4e+1 5.8e-1
dmd phase [deg] 2         10 16       175 -169
noise [rad/Hz^{1/2}] 4.6e-12 inf inf inf inf 9.7e-12 7.8e-13 inf inf inf 1.3e-11 5.3e-10

 

REFL_B_RF9
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W/rad] 7.8e+1 0 0 0 0 6.4e+1 3.6e+2 0 0 2.9e-2 6.4e+1 4.5e-1
dmd phase [deg] 12         10 169     13 -169 15
noise [rad/Hz^{1/2}] 3.4e-12 inf inf inf inf 4.2e-12 7.4e-13 inf inf 9.2e-9 4.2e-12 6.0e-10

 

REFL_A_DC
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W/rad] 0 0 0 0 0 0 0 0 0 0 5.3e-1 -3.5e-3
noise [rad/Hz^{1/2}] inf inf inf inf inf inf inf inf inf inf 6.5e-10 9.8e-8

 

REFL_B_DC
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W/rad] 0 0 0 0 0 0 0 0 0 0 -2.6e-1 -1.6e-3
noise [rad/Hz^{1/2}] inf inf inf inf inf inf inf inf inf inf 9.1e-10 1.5e-7

 

TR (calibration of the pd may be quite off, but the noise floor in rad/sqrt{Hz} should be accurate):

X_TR_A
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W???/rad] 0 -8.1e-3 0 0 0 0 -1.75e+1 0 -1.72e+1 -1.7e-5 5.2e-2 0
noise [rad/Hz^{1/2}] inf 5e-10 inf inf inf inf 2.3e-13 inf 2.3e-13 2.4e-7 7.7e-11 inf

 

X_TR_B
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W???/rad] 0 -9.2e-3 0 0 0 -8.4e-1 -2.1e+1 -9.9e-1 2.1e+1 -1.36e-5 6.0e-2 0
noise [rad/Hz^{1/2}] inf 3.6e-10 inf inf inf 3.9e-12 1.6e-13 3.3e-12 1.6e-13 2.4e-7 5.5e-11 inf

 

Y_TR_A
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W???/rad] 0 2.1e-2 3.5e-2 0 0 -1.6e+0 -2.1e+1 1.4e+0 -2.1e+1 0 7.2e-2 0
noise [rad/Hz^{1/2}] inf 1.6e-10 inf inf inf 2.1e-12 1.6e-13 2.4e-12 1.6e-13 inf 4.6e-11 inf

 

Y_TR_B
  BS SRM SRC2 DC3 DC4 CSOFT CHARD DSOFT DHARD PRM PR3 INP1
resp [W???/rad] 8.7e-2 1.6e-2 1.9e-2 0 0 3.7e+0 -3.7e+0 3.5e+0 4.0e+0 0 2.1e-2 0
noise [rad/Hz^{1/2}] 4.1e-11 2.25e-10 1.9e-10 inf inf 9.7e-13 9.7e-13 1.0e-12 9.0e-13 inf 1.7e-10 inf
LHO VE
chandra.romel@LIGO.ORG - posted 16:50, Wednesday 16 March 2016 (26107)
Vacuum status
Gerardo, Chandra

Valves are open on GV-3 and GV-4 gate annuli and being pumped on annuli IPs.
GV-3 = 3 mA
GV-4 = 2 mA

X & Y beam manifold turbo pumps felt warm so we turned cooling water back on.

Diagonal: 105 Torr
X: 1.69e-7 Torr
Y: 1.65e-7 Torr
H1 General
jeffrey.bartlett@LIGO.ORG - posted 16:37, Wednesday 16 March 2016 (26106)
Ops Evening Shift Transition
            Transition Summary:
Title:  03/16/2016, Evening Shift 23:00 – 07:00 (16:00 – 00:00) All times in UTC (PT)
	
State of H1: IFO unlocked. Planned engineering 

Commissioning: No commissioning work planned for tonight

Outgoing Operator: Ed
H1 General
edmond.merilh@LIGO.ORG - posted 16:01, Wednesday 16 March 2016 (26104)
Shift Summary - Day
TITLE: 03/16 day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: Jeff
SHIFT SUMMARY:'
LOG:
14:00 Chris working in fan room (#5) in corner station. (morning work)
15:30 Gerardo to mechanical room to start his "rounds"
16:18 Fil going out to shutter PSL light pipe
16:19 Manny and Lesly going to finish up cabling work around BSC2
17:11 Gerardo back
17:50 Joe into LVEA to check first aid kits
18:11 Joe out of the LVEA
18:21 Betsy beginning charge measurements on end station test masses
20:20 Fil and JoeD out to LVEA
20:30 Joe out
21:15 Gerardo and Patrick out to End stations
21:16 Carlos out to LVEA
21:25 Fil and Carlos out of LVEA
21:26 FIl opening the shutter on the light pipe
21:31 Betsy out to the LVEA
H1 General
edmond.merilh@LIGO.ORG - posted 14:36, Wednesday 16 March 2016 (26103)
Shutter on Light Pipe Opened
21:36 Filiberto opened the Shutter on the light pipe
LHO VE
chandra.romel@LIGO.ORG - posted 11:48, Wednesday 16 March 2016 - last comment - 09:55, Thursday 17 March 2016(26101)
Pumping down diagonal
John, Gerardo, Chandra

Rough pump down on diagonal. We borrowed the control cable from Ymid turbo pump station to run QDP80 in remote mode. 

Current pressure on BCS4: 383 Torr
Comments related to this report
chandra.romel@LIGO.ORG - 09:55, Thursday 17 March 2016 (26111)
Valved off QDP80 overnight and opened back up at 15:53 UTC on 3/17.
H1 SEI
hugh.radkins@LIGO.ORG - posted 11:24, Wednesday 16 March 2016 (26100)
WHAM4 ISI CPS switched to 71MHz common sync--operating normally

No issues outside of the ridiculous cable nests in the area.

I spent time staighting up the Optical Lever cabling where grouting will happen Thursday or Friday.

H1 General
edmond.merilh@LIGO.ORG - posted 11:15, Wednesday 16 March 2016 (26099)
PSL FE Watchdog reset
15:30 UTC FAMIS 3589
H1 DetChar (DetChar, SUS)
borja.sorazu@LIGO.ORG - posted 09:55, Wednesday 16 March 2016 (26098)
Violin mode Q R&D

(Borja Sorazu, Alan Cumming, Giles Hammond)

This entry is an informative summary of some of the work we are doing/planning to do at Glasgow related to the monolithic suspensions and their violin modes R&D:

1) Identify actual fibre profiles of the installed fibres with actual masses.

2) Model aLIGO 'real' final stage suspension (with real fibre profiles) in ANSYS, to learn about the violin frequencies distribution and see how that can inform on identifying the higher order harmonics and their associated masses. Notice that only fundamental and fist harmonics are partially identified with actual test masses.

3) Use the model to estimate D factor for first 5 or 6 harmonics, and the energy distribution along the fibre length taking into account full fibre shape including necks and hopefully welds.

4) Use these energy ratios to weight the material loss factor equations. In this case, the material loss factor equations are used independently for each segment along the length of the fibre (therefore taking into account correctly the full fibre shape), and summed together and weighted by the energy ratio of each segment of the fibre, to give the full material loss of the fibre. Most probably we are talking about 500-1000 segments or so along each fibre's length.

5) The material loss factor equations we have used previously have used conservative estimates of parameters such as surface and weld loss, and subsequent measurements here in Glasgow have shown that the losses could be better than this, so we can give a range of possible losses (and hence noise spectra) using these and the FEA analysis, for the lower glass stage of the suspension, and compare these values with the measured Q's of the fundamental and higher harmonics of the violin modes. This information may help into understand if the low frequency noise has any thermal noise source.

H1 General
edmond.merilh@LIGO.ORG - posted 09:27, Wednesday 16 March 2016 (26097)
PSL Light Pipe Shuttered
16:20 Filiberto has locked and tagged the PSL Light Pipe
H1 General (PSL)
edmond.merilh@LIGO.ORG - posted 08:57, Wednesday 16 March 2016 (26096)
PSL Weekly status and trends
Laser Status:
SysStat is good
Front End power is 31.72W (should be around 30 W)
Frontend Watch is GREEN
HPO Watch is RED

PMC:
It has been locked 1.0 days, 19.0 hr 34.0 minutes (should be days/weeks)
Reflected power is 3.035Watts and PowerSum = 24.92Watts.

FSS:
It has been locked for 1.0 days 0.0 h and 4.0 min (should be days/weeks)
TPD[V] = 1.501V (min 0.9V)

ISS:
The diffracted power is around 9.648% (should be 5-9%)
Last saturation event was 0.0 days 16.0 hours and 33.0 minutes ago (should be days/weeks)

Please refer further, in depth, analysis of PSL trends to Jason, Peter or Rick.
Images attached to this report
H1 General
bubba.gateley@LIGO.ORG - posted 08:53, Wednesday 16 March 2016 (26095)
Grouting in the LVEA
Grouting of the remainder of the HEPI piers, transmitter and receiver pylons in the LVEA began on Monday morning by Reiboldt and Associates. The grouting has consumed more product than was originally expected and we have used up all that we had. I have ordered more grout and that should be onsite today, meanwhile, the grout crew will be out today. 

Progress to date includes, all of the HEPI piers on HAM 5 & 6, the large carbon fiber leaner on the south side of HAM 4, and the large stainless steel leaner pylon on X-Arm. Remaining items to grout in the LVEA include, 5 of the small transmitter pylons, and 1 each of the large carbon fiber and stainless steel leaner pylon. The plan is to finish these items in the LVEA tomorrow and move to the End stations afterwards.
H1 General
edmond.merilh@LIGO.ORG - posted 08:15, Wednesday 16 March 2016 (26094)
Shift Summary - Day Transition
TITLE: 03/16 day Shift: 16:00-00:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    Wind Avg: 2 mph
    Primary useism: 0.03 μm/s
    Secondary useism: 0.26 μm/s 
QUICK SUMMARY:LVEA is LASER SAFE
LHO FMCS
bubba.gateley@LIGO.ORG - posted 07:06, Wednesday 16 March 2016 (26093)
Bearing Change on Supply Fan 5
Yesterday afternoon I began the disassembly of Supply Fan 5 to investigate a very noisy bearing. I informed the control room that I was going to increase the flow on SF-6 from 
~6200 CFM to ~ 8500 CFM to compensate for the reduced air flow of one fan being down. I will continue with disassembly today and if all parts are readily available, I hope to have the fan back up and running by the end of this week. 
LHO VE
chandra.romel@LIGO.ORG - posted 18:57, Tuesday 15 March 2016 (26092)
Y beam manifold vacuum
John, Chandra

We isolated the beam manifold from QDP80 and are now backing turbo with scroll only.
Control cable switched to scroll box. 
Safety valve set point on both X and Y pump stations is 5e-2 Torr.

X: 5.94e-7 Torr
Y: 1.82e-6 Torr
LHO VE
chandra.romel@LIGO.ORG - posted 17:47, Tuesday 15 March 2016 (26091)
started turbo on Y beam manifold
John, Chandra

Started turbo on Y beam manifold with inlet pressure at 1 Torr and pump water cooling ON. 

X: 8.0e-7 Torr
Y: 4.9e-1 Torr
LHO VE
chandra.romel@LIGO.ORG - posted 16:46, Tuesday 15 March 2016 (26090)
Annulus pressures at GV-5
John, Gerardo, Chandra

Yesterday Kyle and Gerardo noticed the current on annulus IP on GV-5 was high (off scale). Today we noticed it was at 2 mA. We tapped on the vacuum piping around the pump and the current rose. Then we opened the valve to the annulus of GV-5's gate. The current rose to 6 mA and then quickly fell to 2 mA. Closed valve again to isolate GV-5 gate annulus. Now the IP is reading 1 mA.
H1 General
jeffrey.bartlett@LIGO.ORG - posted 16:41, Tuesday 15 March 2016 (26089)
Ops Evening Shift
 
Activity Log: All Times in UTC (PT)

23:00 (16:00) Take over from Ed


End of Shift Summary:

03/15/2016, Evening Shift 23:00 – 07:00 (16:00 – 00:00) All times in UTC (PT)

Support: N/A               
 
Incoming Operator: N/A

Shift Detail Summary:  Some commissioning work going on; does not need Ops support.  


LHO VE
chandra.romel@LIGO.ORG - posted 16:38, Tuesday 15 March 2016 (26088)
backing turbo with scroll Xarm
John, Chandra

Now backing turbo pump on Xarm spool with scroll pump. 
Closed QDP80 valve on Xarm spool pump station. 
Closed vent/purge valves at both X & Y spools.
Closed valves on Inficon gauges (PT-170 and PT-180).

Pressure on PT-170 reading 1.56e-6 Torr.
H1 AOS (TCS)
alastair.heptonstall@LIGO.ORG - posted 17:08, Sunday 13 March 2016 - last comment - 12:04, Wednesday 16 March 2016(26048)
Y-arm TCS laser reporting flow alarm

I notice that the TCS Y laser is off and reporting a flow alarm.  The flow meter shows that the chiller is currently running.  I don't think this laser was in use but was running and it would be better not to leave it in this alarm state.  Either the power supply should be turned off if the laser is not needed, or it should be reset by turning the controller key on/off and pressing the gate button on the controller.

Comments related to this report
nutsinee.kijbunchoo@LIGO.ORG - 11:30, Monday 14 March 2016 (26056)OpsInfo

An instruction on how to restart TCS chiller and controller box can be found here.

kiwamu.izumi@LIGO.ORG - 19:01, Monday 14 March 2016 (26066)

Both TCSX and TCSY chillers were found to be tripped with an error messgage 'Low Temp'. I have power cycled the two units. And cycled the key on the X and Y CO2 laser controllers. They are now back up and functioning.

alastair.heptonstall@LIGO.ORG - 12:04, Wednesday 16 March 2016 (26102)

Thanks Kiwamu.  The LOW TEMP warning will almost certainly have occured because the DAC at some point has been restarted and caused a zero voltage out to the chillers.  This problem is meant to be getting fixed soon with an electronics fix.

It looks like the lasers are now ready to lase, and now you've reset the warnings with the key to get them running you probably just need to press the gate (on/off) button on the front of the controller.  I'm not sure you need them right now though.

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