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ID Date Author Type Categoryup Subject Text Attachments
  16082   Fri Apr 23 18:00:02 2021 gautamUpdatePSLHEPA speed loweredI will upload some plots later - but in
summary, I set the HEPA speed to ~40%. I
used (i)IMC transmission RIN, (ii) Arm cavity
 HEPAdiag.pdf 
  16083   Fri Apr 23 19:26:58 2021 KojiUpdatePSLHEPA speed loweredI believe that there is an internal setting
for the minimum flow, so the flow is not
linear ("0%" is not zero), but
  
  16141   Fri May 14 17:45:05 2021 ranaUpdatePSLHEPA speed raisedThe PSL was too hot, so I turned on the
south HEPA on the PSL. The north one was
on and the south one was off (or so slow
  
  16142   Sat May 15 12:39:54 2021 gautamUpdatePSLNPRO tripped/switched offThe NPRO has been off since ~1AM this morning
it looks like. 
 NPRO.png 
  16144   Tue May 18 00:52:38 2021 ranaUpdatePSLHEPA speed raisedLooks like the fan lowered the temperature
as expected. Need to get a few more days
of data to see if its stabilized, or if that's
 Untitled.png 
  16145   Tue May 18 20:26:11 2021 ranaUpdatePSLHEPA speed raisedFluke. Temp fluctuations
are as usual, but the overall temperature
is still lower. We ought to put some temperature
  
  16400   Thu Oct 14 09:28:46 2021 YehonathanUpdatePSLPMC unlockedPMC has been unlocked since ~ 2:30 AM.
Seems like the PZT got saturated. I moved
the DC output adjuster and the PMC locked
  
  16401   Thu Oct 14 11:25:49 2021 YehonathanUpdatePSLPMC unlocked{Yehonathan, Anchal}

I went to get a sandwich around
10:20 AM and when I came back BS was moving
 BS_OSEM_Sensor_PSD.pdfBS_OSEM_Sensor_PSD_AfterReconnectingCables.pdf 
  16886   Thu Jun 2 20:05:37 2022 yutaConfigurationPSLIMC input power recovered to 1W, some alignment works[Paco, Yuta]

We have
 Before.JPGAfter.JPG 
  16917   Wed Jun 15 15:03:41 2022 KojiUpdatePSLPMC input beam alignedThe commissioners complained about the
PMC alignment. The PMC input beam was aligned.
It made the transmission improved from 0.72
 Screenshot_2022-06-15_15-03-16.pngPXL_20220615_212304650.jpg 
  16922   Thu Jun 16 15:29:03 2022 yutaUpdatePSLPMC input beam aligned again, IMC [Paco, Tomislav, Yuta]

Somehow, when we were trying to measure
 Screenshot_2022-06-16_15-27-30.png 
  16966   Thu Jun 30 19:04:55 2022 ranaSummaryPSLPSL HEPA: How what when whyFor the PSL HEPA, we wanted it to remain
at full speed during the vent, when anyone
is working on the PSL, or when there is a
  
  17047   Fri Jul 29 20:21:11 2022 KojiUpdatePSLFSSSlow/MCAutolocker issue (docker)MCAutolocker/FSSSlow are not properly documented
and not properly working.
Tidy up the script and documentation,
  
  17049   Sat Jul 30 10:38:12 2022 AnchalUpdatePSLFSSSlow/MCAutolocker issue (docker)The FSSSlow script was not properly documented
and it was not working, so I had to use one
that I knew worked from CTN. This scripts
  
  17050   Sat Jul 30 12:48:18 2022 KojiUpdatePSLFSSSlow/MCAutolocker issue (docker)> it only starts working when C1:IOO-MC_LOCK
is 1 and C1:PSL-FSS_SLOWLOOP is 1.

- OK. Your new MCAutolocker does
  
  17057   Thu Aug 4 11:28:22 2022 AnchalUpdatePSLFSSSlow/MCAutolocker issue (docker)Added C1:IOO-MC_LOCK
to ALConfigMC.yml which solved the isse
with FSS Slow. We should tune the FSS Slow
  
  17065   Mon Aug 8 14:47:10 2022 ranaUpdatePSLFSSSlow/MCAutolocker issue (docker)can't we just go back to the old python
script that was working for many years, and
tested? I imagine that as soon as someone
  
  17201   Thu Oct 20 14:13:42 2022 yutaSummaryPSLPMC and IMC sideband frequencies measuredI measured the sideband frequencies for
PMC and IMC lock (to use it for Mariner PMC
and IMC design).
 IMC.JPGPMC.JPG 
  17271   Wed Nov 16 11:56:21 2022 RadhikaUpdatePSLPMC input beam aligned again, IMC [Yuta, JC, Radhika]

PMC input beam was aligned again,
bringing transmission from 0.70 to ~0.75.
 Screen_Shot_2022-11-16_at_12.04.18_PM.png 
  17290   Mon Nov 21 09:13:31 2022 JCUpdatePSLPMC input beam aligned again, IMC [JC, Paco]

I attempted to align PMC Beam from
a transmission of 0.72. I failed to do so
  
  17297   Tue Nov 22 08:56:27 2022 JCUpdatePSLPMC input beam alignment[Paco, Anchal, JC]

C1:PSL-PMC_PMCTRANSPD ~ 0.715 this
morning, this was increased to ~0.730. There
 Screenshot_from_2022-11-22_08-58-45.png 
  17316   Mon Nov 28 11:21:25 2022 JCUpdatePSLPMC input beam alignmentC1:PSL-PMC_PMCTRANSPD was increased from
0.72 to 0.731
 Screenshot_from_2022-11-28_11-20-31.png 
  17390   Tue Jan 10 16:06:58 2023 yutaSummaryPSLPMC transmission dropped to 0.68[JC, Paco, Yuta]

It seems like PMC transmission
(C1:PSL-PMC_PMCTRANSPD) dropped to ~0.68
 Screenshot_2023-01-10_14-26-46.pngIMG_1994.JPG 
  17426   Thu Jan 26 16:07:05 2023 yutaSummaryPSLPMC aligned, now PMC transmission is 0.7PMC aligned (Attachment #1).
Over the past month, PMC transmission
is actually slowly growing from 0.68 to 0.70
 Screenshot_2023-01-26_16-10-20.pngScreenshot_2023-01-26_16-10-35.png 
  17433   Mon Jan 30 10:59:15 2023 JCSummaryPSLPMC aligned, now PMC transmission is 0.7PMC hit a drop around mid-day on Saturday
and has been going down since. As of now,

C1:PSL-PMC_PMCTRANSPD - 0.664
 Screenshot.png 
  113   Fri Nov 16 18:46:49 2007 steveBureaucracyPSL MOPA was turned off & onThe "Mohana" boys scouts and their parents
visited the 40m lab today.
The laser was turned off for their safety.
  
  2951   Wed May 19 14:36:46 2010 AidanHowToPhase CameraPhase Camera algorithm and stuff I had a think about the algorithm
we might use for the phase camera measurement.
MATLAB has an fft function that will allow
 phase_camera_DC_comp.pdfphase_camera_F1_comp.pdfphase_camera_F2_comp.pdfload_raw_data.m 
  2955   Thu May 20 10:06:56 2010 AidanHowToPhase CameraPhase Camera- raw data video    
  3096   Tue Jun 22 09:45:21 2010 Aidan, Joe, RazibUpdatePhase CameraCurrent phase camera setup. Seeing Acoustic beat We've set up a preliminary test bed
for the phase camera. It simply uses a HeNe
that is split into two beams. One is frequency
 2010-06-22_Phase_camera_layout_version_1.pdf 
  3097   Tue Jun 22 13:38:13 2010 KojiUpdatePhase CameraCurrent phase camera setup. Seeing Acoustic beat1. In terms of the AOM:

How much beam power is  incident
  
  3102   Wed Jun 23 12:28:34 2010 RazibSummaryPhase CameraWeeekly SummaryThis past week I have completed the following
tasks:
 
 trigger-box_circuit.pngtest1.png 
  3146   Wed Jun 30 12:20:49 2010 RazibUpdatePhase CameraWeekly updateThis week I have completed following tasks:
1. Worked out the analytical expressions
for the amount of power of the DC and oscillatory
  
  3167   Wed Jul 7 12:17:36 2010 RazibUpdatePhase CameraWeekly updateI have completed the following tasks:
1. Find a simplified calibration
of the exposure time for the current He-Ne
 DC_1Hz_beat_sig.jpgDC_1Hz_beat_sig.jpgDC_5Hz_beat_sig.jpg 
  3187   Fri Jul 9 12:07:26 2010 RazibUpdatePhase CameraWeekly updateHere are some more details about the current
phasecam setup. We are using a He-Ne laser
setup
 phase_cam_setup_09_08_10.jpgmod_setup_(copy)_annotated.jpg 
  3213   Wed Jul 14 10:00:14 2010 josephbUpdatePhase CameraWork near 1Y2 yesterdayRazib and I were attempting to get the
output of a photodiode (PD55A in this case)
recorded, so that we could independently
  
  3215   Wed Jul 14 11:51:48 2010 RazibUpdatePhase CameraWork near 1Y2 yesterday


   
        
            
  
  3217   Wed Jul 14 12:12:03 2010 RazibSummaryPhase CameraWeekly updateThis week I was mainly interested in investigating
the noise source at the phase camera. So
having this issue in mind, my activities
  
  3221   Wed Jul 14 18:09:50 2010 josephb, razibUpdatePhase CameraSome cleanup behind 1Y2 rack of phasecamera electronicsWe made an attempt at cleaning up the phase
camera setup electronics.
We have moved a portion of the electronics
  
  3258   Wed Jul 21 12:20:58 2010 RazibUpdatePhase CameraWeekly updateThis past week I have worked on the following:
1. Setting up the infrastructure
to do noise analysis: We added a temporary
 phase_cam_setup_21_07_2010.jpg 
  3309   Wed Jul 28 13:06:47 2010 RazibUpdatePhase Camera Attached are some calculation that I did
previously for the phasecamera setup. This
shows the nature of the beat signal that
 mean_100_snaps.pngstd_100_snaps.pngphase_cam_calc.pdf 
  3360   Wed Aug 4 16:52:59 2010 Razib, AidanUpdatePhase CameraSideband power measurement (updated)Aidan and I made some attempt to measure
the power of the sidebands so that we can
calculate our expected signal strength.
 Setup_08_04_2010.jpgpower_40MHz.pngpower_25MHz.png 
  3411   Thu Aug 12 16:52:02 2010 RazibUpdatePhase CameraSideband power measurement (updated)I made some measurement of the SCR (signal
to contrast ratio) from the signal from the
EOM and the AOM.
 SCR.jpgDC_sig_sideband_profile.jpgsideband_profile.jpgsine_trig.jpgsine_trig.jpg 
  3412   Thu Aug 12 17:10:07 2010 KojiUpdatePhase CameraSideband power measurement (updated)This sounds very relieving although this
could be a lower bound of the number.
Why didn't you use the output on the
  
  3413   Thu Aug 12 17:28:28 2010 RazibUpdatePhase CameraSideband power measurement (updated)


   
        
            
  
  50   Thu Nov 1 19:53:02 2007 Andrey RodionovBureaucracyPhotosTobin's picture   DSC_0053.JPG 
  51   Thu Nov 1 19:53:34 2007 Andrey RodionovBureaucracyPhotosRobert's photo   DSC_0068.JPG 
  52   Thu Nov 1 19:54:22 2007 Andrey RodionovBureaucracyPhotosRana's photo   DSC_0120.JPG 
  53   Thu Nov 1 19:55:03 2007 Andrey RodionovBureaucracyPhotosAndrey's photo   DSC_0055.JPG 
  54   Thu Nov 1 19:55:59 2007 Andrey RodionovBureaucracyPhotosAndrey, Tobin, Robert - photo   DSC_0092.JPG 
  55   Thu Nov 1 19:58:07 2007 Andrey RodionovBureaucracyPhotosSteve and Tobin's picture   DSC_0023.JPG 
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