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ID Date Author Typedown Category Subject Text Attachments
  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.
  
  14692   Mon Jun 24 13:48:36 2019 KruthiConfigurationCDSGiada wireless connection[Gautam, Kruthi]

This afternoon, Gautam helped me
setup Giada to access the GigE installed
  
  14767   Wed Jul 17 17:56:18 2019 KojiConfigurationComputersGave resolv.conf to giadaKruthi noticed that she could not login
to rossa from giada.

I checked /etc/resolv.conf and
  
  14812   Thu Jul 25 14:28:03 2019 gautamConfigurationComputersfirewalld disabled for EPICS CAI think rana did some more changes to this
workstation to make it useful for commissioning
activities - but the MEDM screens were still
 donatellaCommissioning.png 
  15085   Sun Dec 8 20:48:29 2019 ranaConfigurationComputersMegatron: starts up gradeI noticed recently that Megatron was running
Ubuntu 12, so I've started
its OS upgrade.
  
  15095   Wed Dec 11 22:01:24 2019 ranaConfigurationComputersMegatron: starts up gradeMegatron is now running Ubuntu 18.04
LTS.

We should probably be able to load
  
  15117   Mon Jan 13 15:47:37 2020 shrutiConfigurationComputer Scripts / Programsc1psl burt restore[Yehonathan, Jon, Shruti]

Since the PMC would not lock, we
initially burt-restored the c1psl machine
  
  15125   Wed Jan 15 14:10:28 2020 JonConfigurationPSLNew EPICS database for C1PSL + C1IOOSummary

I have completed the
new EPICS channel database for the c1psl
and c1ioo channels
  
  15142   Wed Jan 22 19:17:20 2020 gautamConfigurationComputersMegatron: starts up gradeupgrade was done

cronjob testing wasn't one
by one 😢 
  
  15145   Thu Jan 23 15:32:42 2020 gautamConfigurationComputersMegatron: starts up gradeThe burt snapshotting is still not so reliable
- for whatever reason, the number of snapshot
files that actually get written looks random.
  
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