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  14134   Sun Aug 5 13:45:00 2018 gautamUpdateSUSETMX trippedIndependent from the problems the vertex
machine has been having (I think, unless
it's something happening over the shared
 ETMX_tripped.pngETMX_tripped_zoom.png 
  14133   Sun Aug 5 13:28:43 2018 gautamUpdateCDSc1lsc flakySince the lab-wide
computer shutdown last Wednesday, all
the realtime models running on c1lsc have
  
  14132   Fri Aug 3 19:02:11 2018 gautamUpdateASSX arm ASS recovery[koji,
gautam]

After I effected the series resistance
  
  14131   Fri Aug 3 18:54:58 2018 gautamUpdateSUSGlitchy MC1The wall StripTool indicated that the IMC
wasn't too happy when I came in today.
Specifically:
 MC1_sensorAnomaly.png 
  14130   Fri Aug 3 16:27:40 2018 ranaUpdateSUSLow noise bias path ideaBah! Too complex.   
  14129   Fri Aug 3 15:53:25 2018 gautamUpdateSUSLow noise bias path ideaSummary:

The idea we are going with to push
the coil driver noise contribution down is
 LT1055_precOpAmp.pdf 
  14128   Fri Aug 3 14:35:56 2018 gautamSummaryElectronicsEX AUX electronics power restoredSteve and I restored the power to the EX
AUX electronics rack. The power strip on
the lowest shelf of the AUX rack now
  
  14127   Thu Aug 2 23:09:25 2018 ranaSummaryComputersX Green "Mystery" solvedI'm going to guess that this was me:
I was disconnecting some octopus power strip
nonsense down there (in particular illuminators
  
  14126   Thu Aug 2 20:54:18 2018 gautamSummaryComputersc1omc model looks stableActually, c1lsc had crashed again sometime
last night so I had to reboot everything
this morning. I used the reboot script again,
  
  14125   Thu Aug 2 20:47:29 2018 gautamSummaryElectronicsX Green "Mystery" solvedI walked
down to the X end and found that the entire
  
  14124   Thu Aug 2 16:30:08 2018 SteveUpdateTreasuretime capsule locationI 've just found this time capsule
note from Nov. 26, 2000 by Kip Thorne: 
LIGO will discover gravitational waves by
 time_capsule.JPG 
  14123   Wed Aug 1 20:44:57 2018 gautamSummaryComputersc1omc model (re?)createdThe main motivation behind adding a DAC
card in c1ioo was to setup an RTCDS model
for the OMC. Attachment #1 shows the new
 CDS_OVERVIEW_withOMC.png 
  14122   Wed Aug 1 19:41:15 2018 gautamSummaryComputersRTCDS recovery, c1ioo changes[Gautam Koji]

After this work, we recovered the
nominal RTCDS state. The main points were:
 CDS_overview.png 
  14121   Wed Aug 1 16:23:48 2018 KojiSummaryComputersTransition of the main NFS disk on chiara[Gautam Koji]

Taking the opportunity to shutdown
c1ioo for adding a DAC card, we shutdown
  
  14120   Tue Jul 31 22:50:18 2018 aaronUpdateOMCOMC Expected Refl SignalI learned a lot about lasers this week
from Siegman. Here are some plots that show
the expected reflectivity off of the OMC
 omcRefl.pdf 
  14119   Tue Jul 31 08:17:55 2018 SteveUpdateSUSTrillium interface box was fixed,reinstalled & working 

 
 all_OK.png 
  14118   Mon Jul 30 18:19:03 2018 KojiUpdateSUSTrillium interface box was fixed and reinstalledThe trillium interface box was removed
from the rack.

The
 P_20180730_173134.jpgP_20180730_180151.jpg 
  14117   Mon Jul 30 16:11:54 2018 gautamUpdateSUSTrillium interface box is broken[koji,
steve, gautam]
  
  14115   Mon Jul 30 11:05:44 2018 gautamUpdateSUSIFO SUS wonkyWhen I came in this morning:


PMC was unlocked.
Seis
BLRMS were off scale.
ITMX OSEM
 IMG_7102.JPG 
  14114   Sun Jul 29 23:15:34 2018 poojaUpdateCamerasDeveloping CNNAim: To develop a convolutional
neural network that resolves mirror motion
 conv_nn_varying_freq_amp_1.pdfconv_nn_varying_freq_amp_2.pdf 
  14113   Sun Jul 29 20:03:02 2018 ranaUpdatePEMSeismometer temp controlWhile Shruti is re-building Kira's
heater circuit, I looked up how to do one
of these (i.e. what does a real EE say about
 Screen_Shot_2018-07-29_at_8.00.27_PM.png 
  14112   Sun Jul 29 00:59:54 2018 KojiUpdateElectronicsCharacterization of Transimpedance AmplifierYou have this measurement problem when
the IF bandwidth is larger than the measurement
frequency. I suspect the IF bandwidth is
  
  14111   Sat Jul 28 22:16:49 2018 John MartynUpdate Characterization of Transimpedance AmplifierKevin and I meaured the transfer function
of the photodiode circuit using the Jenne
laser and agilent in the 40m lab. The attached
 PD_TF1.pdfPD_TF2.pdfPD_and_TIA_Transfer_Function_Measurements.zip 
  14110   Sat Jul 28 00:45:11 2018 terra, sandrineSummaryThermal CompensationHeater measurements overview[Sandrine, Koji, Terra]

Summary: We
completed multiple scans at different heating
 7x 
  14109   Fri Jul 27 17:16:14 2018 SandrineUpdateThermal CompensationCopied working scripts for mode spectroscopy into new directory (modeSpec)The scripts: AGfast.py, make HDF5.py, plotSpec_marconi.py,
and SandrineFitv3.py were copied into the
new directory modeSpec.
  
  14108   Fri Jul 27 10:48:57 2018 SteveUpdateSUSBS oplev windowYesterday I inspected this BS oplev viewport.
The heavy connector tube was shorting to
table so It was moved back towards the chamber.
 BSOw_.jpgdustInsideBSO.jpg 
  14107   Fri Jul 27 02:30:51 2018 gautamUpdateGeneralGlitchy MCKevin and I saw some weird IMC / PEM BLRMS
behaviour today - see Attached screenshot.
Not sure what was happening with the IMC,
 38.png 
  14106   Thu Jul 26 15:11:18 2018 SteveUpdateGeneral Viewports & coating of 2001New optical quality BK-7 windows in 2001
[4 substrates ] AR coated R<0.75 % for
630-1064nm "
 BK7window_Coatings.PDF 
  14105   Thu Jul 26 01:52:01 2018 terraUpdateThermal Compensationheater work updateJust a quick update: over the past few
days we've taken (at least) 5 scans around
each peak [carrier - HOM3] at 9.4V/0.8A,
 OpLev_thermal_drift.pdfhotColdAll.pdf 
  14104   Wed Jul 25 22:46:15 2018 gautamConfigurationComputersNDS access from outsideAfter this work, I've been having some
trouble getting data with Python NDS. Eventually,
I figured out that the nds connection request
  
  14103   Wed Jul 25 14:45:59 2018 SandrineSummaryThermal CompensationETM Y Table AUX read outAttached is a photo of the set up of the
ETM Y table showing the AUX read out set
up. 
 EY_table_.JPG 
  14101   Tue Jul 24 09:47:51 2018 gautamUpdateCamerasDeveloping neural networks on simulated videoI was thinking a little more about the
way we are training the network for the current
topology - because the network has no recurrent
  
  14100   Tue Jul 24 06:11:50 2018 ranaUpdateCamerasDeveloping neural networks on simulated videoThis looks like good progress. Instead
of fixed sines or random noise, you should
generate now a time series for the motion
  
  14098   Mon Jul 23 09:58:52 2018 SteveSummaryVACRGA scan at day 6 

 
 pd81-560Hz-d6.png 
  14097   Sun Jul 22 14:01:07 2018 poojaUpdateCamerasDeveloping neural networks on simulated videoAim: To develop a neural
network that resolves mirror motion from
 nn_simulation_2_normalized_mult_sin_nodes8_128epochs_lr0p00001_beta1_0p8_beta2_0p85_0p4train_0p1valid_marked.pdfnn_simulation_normalizedtarget_128epochs_mult_sin_load_wt_varyingtest_nodes8_lr0p00001_beta1_0p8_beta2_0p85_0p4train_0p1valid_marked.pdfnn_simulation_2_normalized_varying_mult_sin_nodes8_128epochs_lr0p00001_beta1_0p8_beta2_0p85_0p4train_0p1valid_marked.pdf 
  14096   Sat Jul 21 14:03:19 2018 KojiSummaryThermal CompensationY arm lockingAh. With MC2 feedback, we have about 3
times smaller "optical gain" for
the ASS A2L. We have same dither, same actuator,
  
  14095   Sat Jul 21 01:14:02 2018 gautamUpdateOMCPZT Jena driver board check[Aaron, gautam]

We did a quick check of this
board today. Main takeaways:
  
  14094   Sat Jul 21 01:06:49 2018 gautamSummaryThermal CompensationY arm lockingI implemented this today. For now, the
LSC output matrix is set to actuate on MC2
for Y arm locking. As expected, the transmission
  
  14093   Fri Jul 20 22:53:15 2018 KojiUpdateASSAttempt to resurrect Yarm ASS [Koji Gautam]

We managed to realize stable
ASS configuration for Yarm. The transmission
 02.png 
  14092   Fri Jul 20 22:51:28 2018 KojiUpdateIOOIMC WFS path alignmentIMC WFS tuning 

- IMC was aligned manually to have
maximum output and also spot at the center
  
  14091   Fri Jul 20 18:30:47 2018 JonConfigurationAUXRecommend to install AUX PZT driverI recently realized that the PLL is only
using about 20% of the available actuation
range of the AUX PZT. The +/-10 V control
  
  14090   Fri Jul 20 07:43:54 2018 SteveSummarySUSETMY  

 
 ETMY_leveling.pngETMY.png 
  14089   Thu Jul 19 18:09:17 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 nn_simulation_mlt_sine_nodes4_lr0p00001_beta1_0p8_beta2_0p85_marked.pdfnn_simulation_2_nodes4_target-1to1_marked.pdf 
  14088   Thu Jul 19 13:35:30 2018 SteveSummaryVACannuloses pumped Roughing down the annuloses required closing
V1 for 13 minutes

IFO is 2.2e-5 Torr
 AnsPumped.png 
  14087   Thu Jul 19 11:01:03 2018 SteveSummaryVACpd81 @ 2e-5 TorrCold cathode gauge just turned on.  pd81@2days.png 
  14086   Thu Jul 19 04:44:09 2018 Annalisa, TerraSummaryThermal Compensationfrequency shift observed with heating!Annalisa, Gautum, Koji, Terra

Summary: with
the reflector setup, we measured a frequency
 scanning_fine_2018-07-19-07-32-08_parsed.pdfscanning_fine_2018-07-19-06-57-47_parsed.pdfYscan_scanning_parsed_2am.txt.pdf 
  14085   Thu Jul 19 01:56:25 2018 gautamSummaryVACAUX pump shutdown[koji,
gautam]

Per Steve's instructions, we
  
  14084   Wed Jul 18 23:43:50 2018 KojiUpdateGeneralVent 80 recoveryIs the reflector too close to the beam
and causing clipping?

 IMG_5868.JPGIMG_5382.JPG 
  14083   Wed Jul 18 17:36:50 2018 SteveSummaryVACpumpdown 81 at 6 +9 hrs completedIFO P1 6e-4 Torr,  manual gate valve
is fully open

The annuloses will be pumped down
 pd81completed.pngpd81@30hrs.png 
  14082   Wed Jul 18 12:49:08 2018 SteveSummaryVACpumpdown 81 at 6 +4.5hrsThe manual gate valve scan was clean. Atm1
    TP1 was pumping on it overnight.

         
 manlGateScan.pnghanding_over_Mag.pngTGVw2auxfans_.jpg 
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