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Entry  Thu Aug 6 00:34:38 2020, Yehonathan, Update, BHD, Monte Carlo Simulations 8x
    Reply  Fri Aug 7 11:23:47 2020, rana, Update, BHD, Monte Carlo Simulations 
       Reply  Mon Aug 10 07:13:00 2020, Yehonathan, Update, BHD, Monte Carlo Simulations 8x
          Reply  Tue Aug 25 05:51:29 2020, Yehonathan, Update, BHD, Monte Carlo Simulations 8x
             Reply  Mon Sep 14 07:50:01 2020, Yehonathan, Update, BHD, Monte Carlo Simulations 10x
                Reply  Fri Oct 16 09:16:37 2020, Yehonathan, Update, BHD, Monte Carlo Simulations 8x
                   Reply  Thu Oct 22 11:48:08 2020, Yehonathan, Update, BHD, Monte Carlo Simulations 8x
                      Reply  Thu Dec 10 14:48:00 2020, Yehonathan, Update, BHD, Monte Carlo Simulations MCMCLance_NoiseBudget_Example.pdfIFO_Check.pdf
                         Reply  Fri Dec 11 09:28:52 2020, rana, Update, BHD, Monte Carlo loop coupling Simulations 
                            Reply  Mon Dec 14 11:09:28 2020, Yehonathan, Update, BHD, Monte Carlo loop coupling Simulations MCMC_LANCE_OLTFs.pdfMCMC_LANCE_OLCoupling2DARM.pdf
                               Reply  Mon Jan 11 16:11:51 2021, Yehonathan, Update, BHD, Monte Carlo loop coupling Simulations MC_LANCE_OLTFs.pdf
                                  Reply  Mon Jan 11 19:10:10 2021, rana, Update, BHD, Monte Carlo loop coupling Simulations 
Message ID: 15569     Entry time: Mon Sep 14 07:50:01 2020     In reply to: 15539     Reply to this: 15631
Author: Yehonathan 
Type: Update 
Category: BHD 
Subject: Monte Carlo Simulations 

Turns out what was causing the instability in the aLIGO plots were the lock commands which I forgot to remove before running the simulation. Removing these also made the simulation much faster.

Other than that I improved other stuff in the simulations:

  • The LO phase in the aPlus simulation is now optimized for the lowest noise at 100Hz.
  • Added RF PDs diagnostics (see attachments 8 for aPlus and 9 for aLIGO). The thresholds (red dashed lines in attachments 8,9) for cutting marginal simulations are set such that roughly 30% of the simulations are discarded.
  • Removed DHARD because it jacks up the RF PD readings in aPlus for some reason.
  • Fixed the sign of laser frequency shift in response to CARM offset.

Still need to do:

  • Incorporate Jon’s noise curves.
  • Add phase noise for LO beam.
  • Add arm reflectivity imbalance.
  • Add mirror curvature imbalance.
  • Include feedback loops using Pytickle.

Feel free to add to the todo list.

Attachment 1: MICH_AplusMCMC.pdf  38 kB  Uploaded Mon Sep 14 08:58:54 2020  | Hide | Hide all
MICH_AplusMCMC.pdf
Attachment 2: PRCL_AplusMCMC.pdf  37 kB  Uploaded Mon Sep 14 08:59:36 2020  | Hide | Hide all
PRCL_AplusMCMC.pdf
Attachment 3: SRCL_AplusMCMC(1).pdf  35 kB  Uploaded Mon Sep 14 09:00:14 2020  | Hide | Hide all
SRCL_AplusMCMC(1).pdf
Attachment 4: OMC_Comm_AplusMCMC.pdf  36 kB  Uploaded Mon Sep 14 09:01:32 2020  | Hide | Hide all
OMC_Comm_AplusMCMC.pdf
Attachment 5: OMC_Diff_AplusMCMC.pdf  39 kB  Uploaded Mon Sep 14 09:01:51 2020  | Hide | Hide all
OMC_Diff_AplusMCMC.pdf
Attachment 6: OMC_Angle_Yaw_AplusMCMC.pdf  38 kB  Uploaded Mon Sep 14 09:02:36 2020  | Hide | Hide all
OMC_Angle_Yaw_AplusMCMC.pdf
Attachment 7: OMC_Angle_Pitch_AplusMCMC.pdf  42 kB  Uploaded Mon Sep 14 09:02:55 2020  | Hide | Hide all
OMC_Angle_Pitch_AplusMCMC.pdf
Attachment 8: Main_Laser_RIN_AplusMCMC.pdf  43 kB  Uploaded Tue Sep 15 03:32:42 2020  | Hide | Hide all
Main_Laser_RIN_AplusMCMC.pdf
Attachment 9: aPlus_RF_Diagnostics.pdf  24 kB  Uploaded Tue Sep 15 03:33:00 2020  | Hide | Hide all
aPlus_RF_Diagnostics.pdf
Attachment 10: aLIGO_RF_Diagnostics.pdf  24 kB  Uploaded Tue Sep 15 03:33:26 2020  | Hide | Hide all
aLIGO_RF_Diagnostics.pdf
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