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ID Date Authorup Type Category Subject Text Attachments
  9813   Tue Apr 15 09:32:19 2014 GabrieleUpdateLSCMICH gets noisy as CARM or DARM offset reducedI guess this is normal. DARM has (almost)
the same effect of MICH on the corner interferometer
signals, just increased in amplitude by the
  
  10278   Sat Jul 26 14:45:33 2014 GabrieleMetaphysicsASCResponse of POP QPD Koji asked me to perform a simulation
of the response of POP QPD DC signal to mirror
motions, as a function of the CARM offset.
 pop_qpd_all.pngpop_qpd_carrier.pngpop_qpd_sb.pngfoldeddoublecavity.mistpop_qpd.m 
  10337   Wed Aug 6 10:45:56 2014 GabrieleUpdateASCPOP QPD signals In addition to the simulation described
in my
previous elog, I simulated the signal
 pop_qpd_2f.png 
  10454   Thu Sep 4 18:30:13 2014 GabrieleSummaryASCOptimal Gouy phase for POP QPD Jenne asked me to simulate the signals
on POP QPD when moving different mirrors,
as a function of the Gouy phase where the
 pop_qpd_dc.pngfortymeters.mistfortymeters_pop_qpd.mistpop_qpd.m 
  13250   Thu Aug 24 18:02:16 2017 GabrieleSummaryLSCFirst cavity length reconstruction with a neural network1) Introduction

In brief, I
trained a deep neural network (DNN) to recosntuct
the cavity length, using as input only the
 8x 
  13256   Sat Aug 26 09:56:34 2017 GabrieleSummaryLSCFirst cavity length reconstruction with a neural networkUpdate

I included the 55 MHz
sideband and higher order modes in my
training examples. To keep things simple,
 gru_fp_2017_08_25a_50x2_3000_300_20_histogram_1d.png.pnggru_fp_2017_08_25a_50x2_3000_300_20_histogram_2d.png.pngFP_net_reconstruction_1dhistogram.pngFP_net_reconstruction_2dhistogram.png 
  13274   Wed Aug 30 11:04:08 2017 GabrieleSummaryLSCFirst look at neural network reconstruction of PRMI motionIntroduction

I trained a deep
neural network (DNN) to reconstruct MICH
and PRCL degrees of freedom in the PRMI configuration.
 IMG_5882.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_time_domain.png.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_free_swinging_histograms2d.png.pngsimulation_histograms2d.png.png 
  13294   Tue Sep 5 16:37:47 2017 GabrieleSummaryLSCImproved PRMI deep learning reconstructionThis is an update on the results already
presented earlier (refer to elog 13274 for
 Unknown.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_time_domain.png.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_free_swinging_histograms2d.png.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_simulation_reference.png.png 
  13304   Fri Sep 8 12:08:32 2017 GabrieleSummaryLSCGood reconstruction of PRMI degrees of freedom with deep learningIntroduction

This is an update
of my previous reports on applications of
deep learning to the reconstruction of PRMI
 full_real_data_2017_09_06b_100x4_4000_300_20_free_swinging_time_domain.png.pngfull_real_data_2017_09_06b_100x4_4000_300_20_free_swinging_free_swinging_histograms2d.png.pnggru_2017_08_13a_100x4_4000_300_20_free_swinging_simulation_reference.png.png 
  13401   Wed Oct 25 09:32:14 2017 GabrieleSummaryLSCfurther testing of c1dnn integration; plugged in to DAQ


  
  8375   Fri Mar 29 19:23:49 2013 Gabriele, JenneFrogsLSCAnalog whitening filter of REFL55 not switchingWe discovered that the analog whitening
filter of the REFL55_I board is not switching
when we operate the button on the user interface.
  
  8377   Fri Mar 29 19:58:24 2013 Gabriele, JenneFrogsLSCAnalog whitening filter of REFL55 not switching

    

       
            
  
  8665   Mon Jun 3 18:49:44 2013 GautamUpdateGeneralITMx Oplev Fixed  (Manasa)
The ITMx Oplev was misaligned. Switched
the ITMx Oplev back on and fixed the alignment.
  
  8676   Wed Jun 5 10:46:43 2013 GautamUpdateGeneralCable re-routing at 1Y4 There were 4 cables running over
the front side of rack 1Y4 such that the
front door could not be closed. I re-routed
 before.JPGafter.JPG 
  15223   Tue Feb 25 16:17:57 2020 Gautam, HangUpdateCDS Seems that the GPS is out of sync on donatella.
We could not get any data from diaggui...
  
  13057   Fri Jun 9 17:45:21 2017 Gautam, KaustubhUpdateIMCIMC wonkiness 




  
  15076   Thu Dec 5 08:44:44 2019 GavinUpdateLoss MeasurementQ Measurements of Test Masses[Yehonathan, Gavin]

Measuring POX11_Q_MON and injecting
a signal into the ITMX_UL_IN port a signal
 20191205_132158.jpg 
  15055   Wed Nov 27 18:51:22 2019 Gavin WallaceUpdateIMCQ Measurement of Test Masses[Yehonathan, Gavin]

As the resonant modes of the 40m
TMs are at high frequencies (starting at
  
  230   Wed Jan 9 20:36:42 2008 GoUpdateTreasureMoney in labGo's Desk.  DSC_0370.JPG 
  3103   Wed Jun 23 12:31:36 2010 GopalUpdateGeneral6.16.10-6.23.10 Weekly UpdateSummary of This Week's Activities:
6/16: LIGO Orientation; First Weekly
Meeting; 40m tour with Jenne; Removed WFS
  
  3166   Wed Jul 7 11:35:59 2010 GopalUpdateWIKI-40M Update6.30.10 - 7.7.10 Weekly Update Summary of this Week's Activities:
6/30: 2nd and 3rd drafts of Progress
Report
  
  3180   Thu Jul 8 16:24:30 2010 GopalUpdateOptic StacksCompletion of single stack layerSingle layer of stack successfully modeled
in COMSOL. I'm working on trying to add Viton
springs now and extend it to a full stack.
  
  3186   Fri Jul 9 11:41:58 2010 GopalSummaryOptic StacksTop Optic Layer Complete; Mechanical Tests Giving Problems



 7x 
  3199   Mon Jul 12 18:37:10 2010 GopalUpdateOptic StacksEigenfrequency Analysis of Simple ObjectsEigenfrequency analysis has been successfully
completed in COMSOL on both a tutorial camshaft,
as well as a homemade metal bar.
  
  3206   Tue Jul 13 13:56:29 2010 GopalConfigurationOptic StacksVitol Material PropertiesViton flouroelastomers have somewhat variable
material properties. The following parameters
are being used for eigenfrequency analysis.
  
  3207   Tue Jul 13 14:59:04 2010 GopalUpdateOptic StacksEigenfrequency Analysis of Single Stack CompleteVia reconfiguration of Viton parameters
(previously posted), I managed to debug the
COMSOL run time errors and null pointer exceptions.
 Eigenmode_Stack_4.pngEigenmode_Stack_4_xdisp.pngEigenmode_Stack_4_ydisp.pngEigenmode_Stack_4_zdisp.png 
  3222   Wed Jul 14 19:00:56 2010 GopalConfigurationOptic StacksVitol Material Properties, REVISED

    
        
  
  3223   Wed Jul 14 19:15:26 2010 GopalSummaryOptic StacksREVISION: Eigenfrequency Analysis of Single Stack CompleteMy previous eigenfrequency analysis
was incorrect by two orders of magnitude
due to the misuse of Young's Modulus information
 Eigenfrequency_1_Stack4.pngEigenfrequency_2_Stack4.pngEigenfrequency_2_Stack4.pngEigenfrequency_3_Stack4.pngEigenfrequency_4_Stack4.png 
  3224   Wed Jul 14 19:36:17 2010 GopalUpdateOptic StacksExperimental Confirmation of COMSOL AnalysisI experimentally determined the spring
constant of a single Vitol spring in
order to obtain a rough estimate for the
 Untitled.png 
  3246   Mon Jul 19 16:11:17 2010 GopalUpdateOptic StacksEigenfrequency Analysis of Full StackExpanding on the single-layer model, I
added the second, third, and fourth layers
to the stack in COMSOL. Eigenfrequency
 Eigenfrequency_1_4Stacks.pngEigenfrequency_2_4Stacks.pngEigenfrequency_3_4Stacks.pngEigenfrequency_6_4Stacks.png 
  3252   Tue Jul 20 17:38:16 2010 GopalConfigurationOptic StacksStack Type ClarificationsSome clarification is warranted regarding
the different shapes of stacks. Corrections
  
  3255   Wed Jul 21 11:57:59 2010 GopalUpdateWIKI-40M Update7.14.10-7.21.10 Weekly UpdateSummary of this week's activities:
7/14: Analytical calculation of Viton
spring constant; updated Viton values in
  
  3261   Wed Jul 21 17:41:17 2010 GopalConfigurationOptic StacksPictures of StacksNow that venting is complete, this is a
request for anyone who opens any chamber:
1) Please notify me immediately
  
  3276   Fri Jul 23 14:26:01 2010 GopalUpdateOptic StacksSimple Frequency Response Measurements in COMSOLOver the past couple days, I discovered
a simple, direct method for calculating
frequency responses with a combination
  
  3291   Mon Jul 26 11:15:23 2010 GopalHowToCOMSOL TipsPictures from Transfer Function Tutorial on the WikiThe attached pictures give a brief overview
of my transfer function measurement procedure
in COMSOL. For more details, please see the
 7x 
  3298   Tue Jul 27 12:02:31 2010 GopalUpdateOptic StacksPreliminary Transfer Function Measurements on MC1/MC3I have successfully
completed a preliminary transfer function
 MC1_MC3_FDA_1.pngMC1_MC3_FDA_2.pngMC1_MC3_FDA_3.pngMC1_MC3_FDA_4.pngMC1_MC3_FDA_5.png 
  3301   Tue Jul 27 18:42:57 2010 GopalUpdateOptic StacksBode Magnitude Plot and ConcernsI  completed
the frequency domain analysis mentioned previously
 Bode_Mag_MC1_MC3.png 
  3306   Wed Jul 28 12:16:03 2010 GopalUpdateSEIBode Magnitude Plot and Concerns

    
        
 Bode_Disp_MC1_MC3_y.png 
  3307   Wed Jul 28 12:31:00 2010 GopalUpdateWIKI-40M Update7.21.10-7.28.10 Weekly UpdateSummary of this week's activities:
7/21: Frequency Domain Analysis of
rectangular bar; discussed with Koji how
  
  3322   Thu Jul 29 17:11:16 2010 GopalUpdateCOMSOL TipsIncluding Gravity in COMSOL[Gopal, Jan]
  
  3324   Thu Jul 29 20:43:32 2010 GopalSummaryOptic StacksModeling Tips and TiltsI have discovered a method of completely  XTrans_XDisp.pngXTrans_XDisp.pngYTrans_XDisp.pngZTrans_XDisp.png 
  3339   Sat Jul 31 04:03:11 2010 GopalSummaryOptic StacksComplete Displacement Translational Transfer Function MatrixOver the past 36 hours, I've run full-fledged
FDAs on KALLO.
 Progress_Report_2.png 
  3363   Wed Aug 4 20:58:22 2010 GopalUpdateWIKI-40M Update7.28.10 - 8.4.10 Weekly UpdateSummary
of this week's activities:
  
  3376   Fri Aug 6 15:50:29 2010 GopalUpdateOptic Stacks(Much Better Looking) Displacement-Displacment Transfer FunctionsI reran
the FDA in COMSOL on the MC1/MC3 Stack and
produced the following Displacement-Displacement
 MC1_MC3_XTrans.pngMC1_MC3_YTrans.pngMC1_MC3_ZTrans.png 
  3380   Fri Aug 6 19:46:59 2010 GopalUpdateOptic Stacks(Much Better Looking) Displacement-Displacment Transfer Functions


   
        
            
  
  3418   Fri Aug 13 01:53:12 2010 GopalUpdateOptic StacksGravity Implementation ConfirmedTime Domain
Analysis on a Driven, Damped Simple Pendulum
 Pendulum_Length.pngPendulum_Length.pngPendulum_Length.png 
  3142   Wed Jun 30 11:35:06 2010 Gopal UpdateGeneral6.23.10 - 6.30.10 Weekly UpdateSummary of this Week's Activities:
6/23: LIGO Safety Tour; Simulink
Controls Tutorial
  
  3193   Mon Jul 12 11:20:56 2010 Gopal HowToCOMSOL TipsIntrusions (Negative Extrusions)For the sake of future users, I have decided
to periodically add tips and tricks in using
COMSOL that I have figured out, most probably
 6x 
  3219   Wed Jul 14 13:03:04 2010 Gopal UpdateWIKI-40M Update7.8.10 - 7.14.10 Weekly UpdateSummary of this Week's Activities:
Wed. 7/7: COMSOL Busbar tutorials;
began stack design; began base; Viton rubber
  
  3397   Wed Aug 11 11:51:45 2010 Gopal UpdateWIKI-40M Update8.5.10 - 8.11.10 Weekly UpdateSummary of
this Week's Activities:
  
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