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ID Date Authorup Type Category Subject Text Attachments
  14010   Sat Jun 23 13:08:41 2018 JonUpdateAUXFirst Coherent AUX Scan of PRC Using AM Sidebands[Jon, Keerthana, Sandrine]

Thu.-Fri. we continued with PRC
scans using the AUX laser, but now the "scanned"
 IMG_2695.jpegIMG_2698.jpegIMG_2699.jpeg 
  14020   Tue Jun 26 17:20:33 2018 JonConfigurationCamerasLLO Python Camera Software is WorkingThanks to a discussion yesterday with Joe
Betzweiser, I was able to identify and fix
the remaining problem with the LLO GigE camera
  
  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 
  14035   Tue Jul 3 11:59:10 2018 JonUpdateAUXAUX Carrier Scan of Y-Arm CavityI made the first successful AUX laser scan
of a 40m cavity last night.

Attachment #1 shows the measured
 yarm_carrier_trans.pdfAG4395A_02-07-2018_185504.txt 
  14036   Wed Jul 4 19:11:49 2018 JonUpdateAUXMore Testing of AUX-Laser Mode ScanningMore progress on the AUX-laser cavity scans.

Changes to the Setup


For
scans, the Agilent is now being used as a
 yarm_trans_70uW.pdfprc_trans_9mW.pdfyarm_carrier_trans_70uW.tar.gzprc_carrier_trans_9mW.tar.gz 
  14044   Sun Jul 8 12:20:12 2018 JonSummaryAUXGouy Phase Measurements from AUX-Laser ScansThis note reports analysis of cavity scans
made by directly sweeping the AUX laser carrier
frequency (no sidebands). The measurement
 yarm_aux_carrier_trans.pdfprmi_aux_carrier_trans.pdfdrmi_aux_carrier_trans.pdf 
  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
  
  14171   Mon Aug 20 15:16:39 2018 JonUpdateCDSRebooted c1lsc, slow machinesWhen I came in this morning no light was
reaching the MC. One fast machine was
dead, c1lsc, and a number of the slow machines:
  
  14179   Thu Aug 23 15:26:54 2018 JonUpdateIMCMC/PMC troubleI tried unsuccessfully to relock the MC
this afternoon.

I came in to find it in a trouble
  
  14187   Tue Aug 28 18:39:41 2018 JonUpdateCDSC1LSC, C1AUX rebootsI found c1lsc unresponsive again today.
Following the procedure in elog
#13935, I ran the rebootC1LSC.sh
 CDS_FE_STATUS.png 
  14190   Wed Aug 29 11:46:27 2018 JonUpdateSUSlocal 4.4M earth quakeI freed ITMX and coarsely realigned the
IFO using the OPLEVs. All the alignments
were a bit off from overnight.
  
  14196   Mon Sep 10 12:44:48 2018 JonUpdateCDSADC replacement in c1lsc expansion chassisGautam and I restarted the models on c1lsc,
c1ioo, and c1sus. The LSC system is functioning
again. We found that only restarting c1lsc
  
  14278   Tue Nov 6 19:41:46 2018 JonOmnistructure c1vac1/2 replacementThis afternoon I started setting up the
Supermicro 5017A-EP that will replace c1vac1/2.
Following Johannes's procedure in 
  
  14282   Wed Nov 7 19:17:18 2018 JonOmnistructure modbusIOC is running on c1vac replacementToday I finished setting up the server
that will replace the c1vac1/2 machines.
I put it on the martian network at the unassigned
  
  14287   Fri Nov 9 22:24:22 2018 JonOmnistructure Wiring of Vacuum Acromag Chassis CompleteWiring of the power, Ethernet, and indicator
lights for the vacuum Acromag chassis is
complete. Even though this crate will only
 IMG_2987.jpgIMG_2985.jpgIMG_2986.jpg 
  14296   Wed Nov 14 21:34:44 2018 JonOmnistructure Vacuum Acromags installed and testedAll 7 Acromag units are now installed in
the vacuum chassis. They are connected to
24V DC power and Ethernet.
 IMG_3003.jpg 
  14308   Mon Nov 19 22:45:23 2018 JonOmnistructure Vacuum System SubnetworkI've set up a closed subnetwork for
interfacing the vacuum hardware (Acromags
and serial devices) with the new controls
  
  14309   Mon Nov 19 23:38:41 2018 JonOmnistructure Vacuum Acromag Channel AssignmentsI've completed bench testing of all
seven vacuum Acromags installed in a custom
rackmount chassis. The system contains
 Binary_IO_Channel_Assignments.pdf 
  14315   Sun Nov 25 17:41:43 2018 JonOmnistructure Vacuum Controls Upgrade - Status and PlansNew hardware has been installed in the
vacuum controls rack. It is shown in the
below post-install photo.
 rack_photo.jpg 
  14320   Mon Nov 26 21:58:08 2018 JonOmnistructure Serial Vacuum SignalsAll the serial vacuum signals are now interfaced
to the new digital controls system. A set
of persistent Python scripts will query each
 GP307_relays.jpeg 
  14325   Fri Nov 30 15:53:52 2018 JonOmnistructureGeneralN2 pressure gauge fixI've made a repair to the N2 pressure
monitor. I don't believe the polarity
of the analog signal into the controller
 N2_transducer_datasheet.pdf 
  14327   Sun Dec 2 16:08:44 2018 JonOmnistructureUpgradeFeedthroughs for Vacuum Acromag ChassisBelow is an inventory of the signal
feedthroughs that need to be installed on
the vacuum Acromag crate this week.
  
  14330   Tue Dec 4 10:38:12 2018 JonOmnistructureUpgradeUpdated Feedthrough List for Vacuum Acromag ChassisBased on new input from Chub, attached
is the revised list of signal cable
feedthroughs needed on the vacuum system
 acromag_chassis_feedthroughs.pdf 
  14333   Thu Dec 6 17:33:33 2018 JonOmnistructureGeneralN2 line disconnectedI believe I finally have the N2 gauge working
correctly. The wiring is unchanged from its
original state and the controller has been
  
  14348   Wed Dec 12 18:27:07 2018 JonOmnistructureUpgradeAnalog signals, A/D Acromag added to vacuum systemThere turned out to be a few analog signals
for the vacuum system after all. The TP2/3
foreline pressure gauges were never part
  
  14372   Thu Dec 20 08:38:27 2018 JonUpdateVACPumpdown tomorrow Linked is the pumpdown
procedure, contained in the old 40m documentation.
The relevant procedure is "All Off -->
  
  14375   Thu Dec 20 21:29:41 2018 JonOmnistructureUpgradeVacuum Controls Switchover Completed[Jon, Chub, Koji, Gautam]

Summary

Today we carried
out the first pumpdown with the new vacuum
 40m_vacuum_acromag_channels.pdf 
  14383   Fri Jan 4 10:25:19 2019 JonOmnistructureVACN2 line valved offYes, for TP2 and TP3. They both have
a small vent valve that opens automatically
on shutdown.
  
  14384   Fri Jan 4 11:06:16 2019 JonOmnistructureUpgradeVac System PunchlistThe base Acromag vacuum system is running
and performing nicely. Here is a list of
remaining questions and to-do items we still
  
  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.
  
  14390   Tue Jan 8 19:13:39 2019 JonUpdateUpgradeReady for pumpdown tomorrowEverything is set for a second pumpdown
tomorrow. We'll plan to start pumping
after the 1pm meeting. Since the main volume
  
  14393   Wed Jan 9 20:01:25 2019 JonUpdateVACSecond pumpdown completed[Jon, Koji, Chub, Gautam]

Summary

The
second pumpdown with the new vacuum system
 Screenshot_from_2019-01-09_20-00-39.pngIMG_3088.jpg 
  14396   Thu Jan 10 19:59:08 2019 JonUpdateVACVac System Running Normally on Turbo Pumps[Jon, Gautam, Chub]

Summary

We continued
the pumpdown of the IFO today. The main volume
 Screen_Shot_2019-01-10_at_7.58.24_PM.pngCCs.pngTPs.png 
  14410   Sun Jan 20 23:41:00 2019 JonOmnistructureVACNotes on vac serial comm, adapter wiringI've attached my handwritten notes
covering all the serial communications in
the vac system, and the relevant wiring for
 Jon_wiring_notes.tar.gz 
  14453   Thu Feb 14 18:16:24 2019 JonUpdateVACVacromag failureI sent Gautam instructions to first try
stopping the modbus service, power
cycling the Acromag chassis, then
  
  14456   Fri Feb 15 11:58:45 2019 JonUpdateVACVac system is back upThe problem encountered with the vac controls
was indeed resolved via the recommendation
I posted yesterday. The Acromags had gone
  
  14461   Fri Feb 15 20:07:02 2019 JonUpdateVACUpdated vacuum punch listWhile working on the vac controls
today, I also took care of some of the remaining
to-do items. Below is a summary of what was done,
  
  14487   Wed Mar 20 12:31:30 2019 JonUpdateVACDoing vac controls workI'm rebooting the IOLAN server to load
new serial ports. The interlocks might trip
when the pressure gauge readbacks cut out.
  
  14488   Wed Mar 20 19:26:25 2019 JonUpdateVACProtection against AC power lossToday I implemented protection of the vac
system against extended power losses. Previously,
the vac controls system (both old and new)
 IMG_3146.jpg 
  14489   Wed Mar 20 20:07:22 2019 JonUpdateVACDoing vac controls workWork is completed and the vac system is
back in its nominal state.

  
  14490   Thu Mar 21 12:46:22 2019 JonUpdateVACMore vac controls upgradesThe vac controls system is going down for
migration from Python 2.7 to 3.4. Will advise
when it is back up.
  
  14491   Thu Mar 21 17:22:52 2019 JonUpdateVACMore vac controls upgradesI've converted all the vac control
system code to run on Python 3.4, the latest
version available through the Debian
  
  14493   Thu Mar 21 18:36:59 2019 JonOmnistructureUpgradeVacuum Controls Switchover CompletedUpdated vac channel list is attached. There
are several new ADC channels.

 40m_Vacuum_Acromag_Channels_20190321.pdf 
  14495   Mon Mar 25 10:21:05 2019 JonUpdateUpgradec1susaux upgrade planNow that the Acromag upgrade of c1vac is
complete, the next system to be upgraded
will be c1susaux. We chose c1susaux because
 IMG_3136.jpgIMG_3138.jpgIMG_3137.jpg 
  14497   Tue Mar 26 18:35:06 2019 JonUpdateUpgradeModbus IOC is running on c1susaux2Thanks to new
info from Johannes, I was able to finish
setting up the modbus IOC on c1susaux2.
  
  14500   Fri Mar 29 11:43:15 2019 JonUpdateUpgradeFound c1susaux database bugI found the current bias output channels,
C1:SUS-<OPTIC>_<DOF>BiasAdj,
were all pointed at C1:SUS-<OPTIC>_
  
  14505   Mon Apr 1 12:01:52 2019 JonUpdateCDS I brought c1susaux back online this morning
for suspension-channel test scripting. It
had been dead for some time. I followed
  
  14508   Tue Apr 2 15:02:53 2019 JonUpdateCDSITMY freed    
  14514   Wed Apr 3 16:17:17 2019 JonUpdateVACTP2 forepump replacedI can't explain the mechanical switching
sound Gautam reported. The relay controlling
power to the TP2 forepump is housed in the
 IMG_3180.jpg 
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