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ID Date Author Typedown Category Subject Text Attachments
  14026   Wed Jun 27 19:37:16 2018 KojiConfigurationComputersNew NAT router installed[Larry, Koji]

We replaced the NAT router between
martian and the campus net. We have the administrative
 P_20180627_193357.jpg 
  14033   Fri Jun 29 18:16:32 2018 JonConfigurationPSLChanges to AUX Optical Layout on PSL TableIn order to use the 0th-order deflection
beam from the AOM for cavity mode scans,
I've coaligned this beam to the
 PSL_AUX_SETUP_CHANGE.pdf 
  14041   Fri Jul 6 12:12:09 2018 AnnalisaConfigurationThermal CompensationThermal compensation setupI tried to put together a rudimentary heater
setup. 

As a heating element, I used the
 IMG_1887.jpgIMG_1884.jpgIMG_1883.jpgIR20180706_0358_labels.png 
  14043   Sat Jul 7 19:50:38 2018 AnnalisaConfigurationThermal CompensationStudy about the Thermal projection setup and its effect on the cavityI made some simulation to study the change
that the heater setup can induce on the Radius
of Curvature of the ETM.
 6x 
  14050   Tue Jul 10 23:44:23 2018 AnnalisaConfigurationThermal CompensationHeater setup assembly[Annalisa, Koji]

Today both the heater and the reflector
were delivered, and we set down the setup
 8x 
  14062   Fri Jul 13 00:15:13 2018 Annalisa, TerraConfigurationAUXY arm cavity scan [Annalisa, Terra, Koji, Gautam]

Summary: We
find a configuration for arm scans which
 IMG_6492.JPGIMG_6494.JPG 
  14071   Fri Jul 13 23:39:46 2018 AnnalisaConfigurationThermal CompensationThermal compensation setup - power supply[Annalisa, Rana]

In order to power the heater setup
to be installed in the ETMY chamber,
 IMG_2012.jpgIMG_2013.jpg20180713_213818.jpg 
  14078   Tue Jul 17 17:37:46 2018 Annalisa, TerraConfigurationThermal CompensationHeaters installationSummary

We
installed two heaters setup on the ETMY bench
in order to try inducing some radius of curvature
 6x 
  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
  
  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
  
  14153   Fri Aug 10 11:29:39 2018 aaronConfigurationUpgradeParts list for BHDI've started putting together a list
of things we'll need to buy to do BHD
readout. I'm still messing around with
  
  14154   Fri Aug 10 16:43:50 2018 gautamConfigurationUpgradeParts list for BHDCan we use the leakage
beam from MMT2 on the OMC table as the
LO beam? I can't find the spec for this
  
  14155   Sun Aug 12 10:59:34 2018 aaronConfigurationUpgradeParts list for BHDThat seems fine, I wasn't thinking
of that beam. in that case could we just
have a PBS directly behind MMT2 and send
  
  14158   Mon Aug 13 17:20:07 2018 aaronConfigurationUpgradeParts list for BHDI've attached the diagram of what I
mean.

There are a couple caveats and
 BHD_layout.pdf 
  14205   Fri Sep 21 09:59:09 2018 yukiConfigurationASCY end table upgrade plan[Yuki, Gautam]

Attachments #1 is the current setup
of AUX Y Green locking and it has
 Pic_CurrentSetup_AUXYgreen.jpegModeMatchingSolution_Current.pdfModeMatchingSolution_Current_Magnified.pdfModeMatchingSolution_Optimized.pdfModeMatchingSolution_Optimized_Magnified.pdf 
  14212   Sun Sep 23 19:32:23 2018 yukiConfigurationASCY end table upgrade plan[ Yuki, Gautam ]

The setup I designed before has
abrupt gouy phase shift between two steering
 Pic_NewSetup0923_AUXYgreen.jpegModeMatchingSolution_Result.pdfModeMatchingSolution_Magnified_0923.jpgpic0923_1.jpgpic0923_2.jpg 
  14214   Mon Sep 24 11:09:05 2018 yukiConfigurationASCY end table upgrade plan[ Yuki, Steve ]

With Steve's help, we checked
a new lens can be set soon after dichroic
 pic0924_1.jpg 
  14216   Tue Sep 25 18:08:50 2018 yukiConfigurationASCY end table upgrade plan[ Yuki, Gautam ]

We want to remotely control steeing
PZT mirrors so its driver is needed.
  
  14218   Thu Sep 27 14:02:55 2018 yukiConfigurationASCPZT driver board verification[ Yuki, Gautam ]

I fixed the input terminal that
had been off, and made sure PZT driver
 PZTdriverSimulationDiagram.pdfPZTdriverSimulationResult.pdfPZTdriverPerformanceCheck_ResultOUT.pdfPZTdriverPerformanceCheck_ResultMON.pdfPZTdriver.asc 
  14219   Sun Sep 30 20:14:51 2018 yukiConfigurationASCQPD calibration[ Yuki, Gautam, Steve ]

Results:
I calibrated a QPD (D1600079, V1009)
 QPDcalibrationXaxis.pdfQPDcalibrationYaxis.pdf 
  14220   Mon Oct 1 12:03:41 2018 not yukiConfigurationASCPZT driver board verificationI assume this QPD set is a D1600079/D1600273
combo.

How much was the SUM output during
  
  14221   Mon Oct 1 13:33:55 2018 yukiConfigurationASCQPD calibration


Quote:


 Pic_QPDcalibration.jpg 
  14222   Mon Oct 1 20:39:09 2018 gautamConfigurationASCc1asyWe need to set up a copy of the c1asx   
  14224   Tue Oct 2 18:50:53 2018 yukiConfigurationASCPZT mirror calibration[ Yuki, Gautam ]

I calibrated PZT mirrors. The ROUGH
result was attached. (Note that some errors and
 PZTM1calibrationCH2.pdfPZTM1calibrationCH1.pdfPZTM2calibrationCH2.pdfPZTM2calibrationCH1.pdf 
  14226   Wed Oct 3 14:24:40 2018 yukiConfigurationASCY end table upgrade planInterim Procedure Report:

Purpose

The current setup of AUX Y-arm
  
  14227   Wed Oct 3 18:15:34 2018 yukiConfigurationASCAI board improvement[ Yuki, Gautam ]

I improved Anti-Imaging board (D000186-Rev.D),
which will be put between DAC port and
 TF_AIboard.pdf 
  14228   Thu Oct 4 00:44:50 2018 yukiConfigurationASCAI board improvement[ Yuki, Gautam ]

I made a cable which connects DAC
port (40 pins) and AI board (25 pins). I
  
  14230   Thu Oct 4 22:15:30 2018 yukiConfigurationASCY-end table upgradeBefore changing setup at Y-end table, I
measured the status value of the former setup
as follows. These values will be compared
 AUXYGreenLock20180921.jpgPic_FormerSetup.jpegPic_CurrentSetup1004.jpg 
  14231   Fri Oct 5 00:46:17 2018 KojiConfigurationASCY-end table upgrade???

The SHG crystal has the conversion
efficiency of ~2%W (i.e. if you have 1W input
  
  14232   Fri Oct 5 17:32:38 2018 yukiConfigurationASCY-end table upgradeI measured it with the wrong setting of
a powermeter. The correct ones are here:


beam power going into doubling
  
  14233   Fri Oct 5 17:47:55 2018 gautamConfigurationASCY-end table upgradeWhat
about just copying the Xend
  
  14234   Fri Oct 5 22:49:22 2018 yukiConfigurationASCY-end table upgradeI designed a new layout. It has good mode-matching
efficiency, reasonable sensitivity to component
positions, good Gouy phase separation. I'm
  
  14235   Sun Oct 7 16:51:03 2018 gautamConfigurationLSCYarm triggering changedTo facilitate Yuki's alignment of the
EY green beam into the Yarm cavity, I have changed
  
  14236   Sun Oct 7 22:30:42 2018 yukiConfigurationLSCYarm Green locking was recoveredI finished installation of optics in the
Y-end and recovered green locking. Current
ALS-TRY_OUTPUT is about 0.25, which is lower
 Pic_NewLayout1007.jpgYendGreenModeMatching.zip 
  14237   Mon Oct 8 00:46:35 2018 yukiConfigurationASCY-end table upgrade


Quote:


  
  14238   Mon Oct 8 18:56:52 2018 gautamConfigurationASCc1asx filter coefficient file missingWhile pointing Yuki to the c1asx servo
system, I noticed that the filter
file for c1asx is missing in the usual chans
  
  14239   Tue Oct 9 16:05:29 2018 gautamConfigurationASCc1tst deleted, c1asy deployed.Setting up c1asy:


Backed up old c1tst.mdl
as c1tst_old_bak.mdl in /opt/rtcds/userapps/release/cds/c1/models
Copied
 CDSoverview_ASY.png 
  14240   Tue Oct 9 23:03:43 2018 yukiConfigurationLSCYarm Green locking was recovered[ Yuki, Gautam, Steve ]

To align the green beam in Y-end
these hardware were installed:
 Pic_1Y4.jpgPic_PZTcable.jpg 
  14241   Wed Oct 10 12:38:27 2018 yukiConfigurationLSCAll hardware was installedI connected DAC - AIboard - PZTdriver -
PZT mirrors and made sure the PZT mirrors
were moving when changing the signal
  
  14257   Mon Oct 15 20:11:56 2018 yukiConfigurationASCY end table upgrade planFinal Procedure Report for Green Locking
in YARM:

Purpose
  
  14260   Wed Oct 17 20:46:24 2018 yukiConfigurationASCY end table upgrade planTo do for Green Locking in YARM:

The auto-alignment servo should
be completed. This servo requires many parameters
  
  14301   Fri Nov 16 15:09:31 2018 SteveConfigurationVACnot venting cryo and ion pumpsNotes on the ion pumps and cryo pump:



Our
4 ion pumps were closed off for a lomg time.
I estmated their pressure to be around ~1
  
  14322   Tue Nov 27 17:06:51 2018 SteveConfigurationVACAgilent 84FS turbo installed as TP2Chub & Steve,   
  14382   Thu Jan 3 21:17:49 2019 ranaConfigurationComputersWorkstation Upgrade: Donatella -> Scientific Linux 7.2donatella was one of our last workstations
running ubuntu12. we installed SL7 on there
today
 IMG_20190103_205158.jpg 
  14387   Mon Jan 7 11:54:12 2019 JonConfigurationComputer Scripts / ProgramsVac system shutdownI'm making a controlled shutdown of
the vac controls to add new ADC channels.
Will advise when it's back up.
  
  14388   Mon Jan 7 19:21:45 2019 JonConfigurationComputer Scripts / ProgramsVac system shutdownADC work finished for the day. The vac
controls are back up, with all valves
CLOSED and all pumps OFF.
  
  14476   Fri Mar 8 08:40:26 2019 AnjaliConfiguration Frequency stabilization of 1 micron sourceThe schematic of the homodyne configuration
is shown below.

Following are the list of components
 Homodyne_setup.png 
  14664   Tue Jun 11 19:25:58 2019 aaronConfigurationBHDReviving the single OMC BHD design?I drew out some idea of how we might
use a single OMC to clean both paths of the
BHD after mixing, without being susceptible
 singleOMC.pdf 
  14672   Thu Jun 13 22:21:44 2019 KojiConfigurationCDSPaola wireless connected to martianSURFs had trouble connecting paola to martian
via wireless.
Of course, it requires a fixed IP
  
  14685   Fri Jun 21 19:22:40 2019 KojiConfigurationBHDReviving the single OMC BHD design?I think a Faraday rotator rotates the polarizations
in a same way for both forward and backward
beam, and it's not like in this figure.
  
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