40m QIL Cryo_Lab CTN SUS_Lab CAML OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
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  2611   Fri Jan 28 15:18:27 2022 AnchalSummaryEquipment loanCTN raided by 40m tribes[Anchal, Paco]

CTN was raided today afternoon
between 2 pm and 3 pm by 40m tribes. They
  2352   Wed May 29 18:50:18 2019 anchalDailyProgressFSSNorth FSS F and Crossover Frequency MeasurementI took the transfer function of North FSS
side to see how much suppression we are doing.
I took the transfer function by sending source
  637   Mon Jul 25 21:02:25 2011 frank, raphael, taraNotesFSSTF of EOM We measured EOM's transfer function
again. The result is unexpected, it is flat
from ~ 100k to 1MHz, instead of going up
  648   Tue Aug 2 23:58:40 2011 taraDailyProgressopticNew RCAV setup is locked  RCAV is locked, I have not
optimized the mode matching yet, the coupling
efficiency is ~ 67%.
  653   Tue Aug 9 00:39:30 2011 taraDailyProgressopticRCAV modematching optimized I optimized mode matching for RCAV.
The coupling is ~75%.  I also minimized
RFAM from the 35.5MHz EOM.
  658   Mon Aug 15 23:13:53 2011 taraDailyProgressopticRCAV modematching optimized I recalculated the mode matching
so that the spot radius in AOMs is 100 um.
Now the visibility of RCAV is 90%.
  659   Wed Aug 17 20:41:13 2011 taraDailyProgressopticACAV path is upI put most optics on ACAV path. I have
not tried to lock the cavity yet. I'll install
  2108   Tue Feb 27 14:17:13 2018 AaronDailyProgressTempCtrlHigh Current Draw for Vaccan Temp Control Causing Nonlinear Voltage SpikesI think I'm seeing a similar problem
that y'all were when I use my heater
circuit (which is I believe the same as your
  1538   Wed Feb 4 17:29:29 2015 AidanSummaryDocumentationElectronics and power chassis connection summaryI spent this afternoon tracing out all
the connections to and from all the
chassis in the CTN lab.
  1539   Mon Mar 30 14:22:36 2015 AidanNotesComputersOrdered Acromag slow controls test unitI ordered the following Acromag units for
a new slow controls test setup. The
idea is to replace the Sun workstation
  1540   Mon Mar 30 14:24:48 2015 AidanNotesComputersLab workstation has diedThe Windows XP workstation in the lab died
last week. After booting up to the "Windows
XP" screen it reported a hardware problem.
  1541   Mon Mar 30 14:29:25 2015 AidanSummaryEnvironmentCleaning underwayI've started removing a lot of
the miscellaneous hardware from the lab (old
pieces of Bosch framing, sheets of acrylic/plastic,
  1542   Tue Mar 31 11:43:37 2015 AidanSummaryComputersRebooted VME and added sitemapAidan

Aidan rebooted the Sun machine
and VME. It took a while to get the EPICS
  1543   Wed Apr 1 17:33:08 2015 AidanDailyProgressPMCLaser out of alignment to PMCI've been trying to lock the laser
to the PMC since we adjusted the Faraday.
It's basically badly out of alignment
  1545   Thu Apr 9 17:03:35 2015 AidanSummaryComputersAcromag ADC set upI set up an Acromag slow controls based
on the procedure that Keith wrote in T1400200.
It's really pretty easy. It took an hour
  1547   Wed Apr 15 17:51:43 2015 AidanSummaryDAQAcromag XT1541 DAC working correctly - a little trick to configureAidan.


I configured the Acromag XT1541
  1548   Thu Apr 16 13:31:32 2015 AidanSummaryDAQAcromag XT1541 DAC working correctly - a little trick to configurehttps://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:resources:computing:acromag


  1549   Mon May 18 16:49:59 2015 AidanSummaryPMCRealigning PMC with rubbish input beamI'm practicing the procedure of aligning
the PMC. The input beam isn't great (I
might be clipping a little on the Faraday).
  1559   Sat Aug 1 09:29:25 2015 AidanSummaryEnvironmentCleaned computer table. Added AcromagI cleaned the table with the computers
and removed one of the monitors. I installed
the Acromag units to the rack, powered them
  1561   Tue Aug 4 14:15:14 2015 AidanSummaryComputersDAQD not running on FB2. FB2 trend disk is fullLike the title says ...

If I try running DAQD per https://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:experiments:psl:add_channel_for_daq_in_fb2

then it fails and the log file
  1564   Wed Aug 5 10:18:54 2015 AidanSummaryComputersSummary of installation of Acromag units and control workstationSummary of installation of new hardware:


ACROMAG1 computer.
  1571   Fri Aug 14 19:10:39 2015 AidanSummaryTempCtrlDropped lab temperature set point from 72F to 68FAt 7:07PM

  1572   Mon Aug 17 17:02:41 2015 AidanSummaryComputersAcromag binary outputs working - still can't control TTFSS box thoughI managed to figure out the modbusDrv configuration
settings to get the binary output of the
Acromag working. I've updated the Wiki
  1573   Wed Aug 19 10:34:33 2015 AidanSummaryDAQBinary IO control of TTFSS box working - can lock PDH remotelyI've worked out how to get the binary
IO to work with the TTFSS box so that we
can activate switches in that unit. It wasn't
  1574   Wed Aug 19 13:53:45 2015 AidanSummaryDAQDAC calibration for Acromag slow unitsVolts (requested) to Counts

C = a1*V_req + a2

a1 = 3003.5 counts/Volt
  1585   Thu Oct 8 16:27:18 2015 AidanSummaryNoiseBudgetNoise Budget on MATLAB - RIN is possibly the reason locking sucks right nowAfter two straight days of trying to get
iPython notebooks to run on my Mac and two
different Ubuntu installations, I gave up
  1591   Thu Oct 15 10:09:16 2015 AidanSummaryComputersUpdated network diagram on Wikihttps://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:resources:computing:network:menu

Removed a few old computers from
the diagram (35W laser, old OPC server, PSL
  1597   Mon Oct 26 13:47:18 2015 AidanSummaryRefCavThermal shield cap drawing - lower emissivity materialhttps://dcc.ligo.org/DocDB/0120/D1500213/001/D1500213-v1.PDF   
  1598   Mon Oct 26 17:24:59 2015 AidanSummaryRefCavThermal shield cap drawing - lower emissivity materialHere's the drawing for the shield. https://dcc.ligo.org/LIGO-D1500403

  1610   Fri Mar 4 17:27:48 2016 AidanSummaryEnvironmentTable and enclosure raisingWe have raised the table by ~ 16"
and the enclosure around the table by about
  1618   Wed Mar 30 10:22:59 2016 AidanSummaryDAQNew front panel for Acromag slow controls orderedI've ordered a 4U rack mount kit with
DIN rail for mounting the Acromag stuff.
It's open on the top and bottom but is
  1628   Sat Apr 9 12:30:15 2016 AidanSummaryDAQDAC back online for laser SLOW control: now via AcromagWith the (intentional) demise of the VME
crate, the slow controls for the laser were
brought back online today. So far, only the
  1629   Sat Apr 9 12:30:20 2016 AidanSummaryDAQDAC back online for laser SLOW control: now via AcromagWith the (intentional) demise of the VME
crate, the slow controls for the laser were
brought back online today. So far, only the
  1634   Mon May 30 14:27:48 2016 AidanSummarySafetyGave Andrew Wade a safety walkthroughI showed Andrew Wade the CTN lab and gave
him a safety walkthrough. We also went over
the safe operating procedure for turning
  1636   Tue May 31 13:26:21 2016 AidanSummaryRF36MHz and 37MHz Wenzel crystals added to the lab for PDHI have a set of two Wenzel OCXO added to
the electronics chassis, courtesy of the
gentry from the Cryo Lab. The chassis has
  1700   Thu Aug 4 15:15:32 2016 AidanSummaryTempCtrlRTDs used in aLIGO TCS RHsThese are the RTDs we use in aLIGO TCS


  1710   Tue Aug 30 10:28:07 2016 AidanMiscTempCtrlKapton stick on resistive heaters
I've ordered a few of these Kapton heaters
to fit the new shields: https://dcc.ligo.org/DocDB/0122/D1500403/002/D1500403-v2.PDF
  1711   Tue Aug 30 10:56:51 2016 AidanSummaryTempCtrlRTDs used in aLIGO TCS RHsHere's the RH driver PCB for aLIGO:


It uses this power amp: https://www.digchip.com/datasheets/download_datasheet.php?id=508953&part-number=LM12CLK
  1716   Tue Sep 6 15:24:52 2016 AidanSummaryEnvironmentPEM monitor computer is ready to run - needs licenseI'm working with Jamie to get a frame builder
running in the ATF & CTN for these temp/pres/humidity
channels to be stored on. There's no 
  1801   Wed Jan 4 16:21:52 2017 AidanNotesPMCCTN PMC COMSOL lowest body-mode 13.9kHz & UGF = 3.5kHz calculationI modeled the PMC in COMSOL. The lowest
order body mode is around 13.9kHz. This means
we want a UGF for the PMC control loop around
  1811   Wed Jan 11 17:08:45 2017 AidanSummaryPurchasesControllable 30V, 3A, 90W linear power supply with analog input I picked up one of the following linear lab
power supplies for the TCS Lab. They can
output 30V, 3A. They also have accept an
  1837   Wed May 24 14:58:45 2017 AidanSummaryPMCPMC driver board chassis and AcromagI've pulled the old PMC driver board
from the VIM crate architecture and inserted
it into a chassis (D1700003). The interface
  1920   Fri Sep 15 14:33:06 2017 AidanSummaryOtherCTN lab preparation for the plumbing work[Aidan, Gabriele, Eric]

We turned off and covered the clean flow
bench by the west wall. We also removed the
  1656   Fri Jul 1 16:50:35 2016 Aidan, AndrewSummaryDAQAcromag slow controls back upI showed Andrew how to set up the slow
controls. We got the previous 3 ADC channels
back up.
  1557   Thu Jul 30 14:55:14 2015 Aidan, AntonioSummaryEnvironmentBroken light replaced - general lab cleanlinessI had Facilities come and replace the dead
light tube in the CTN lab antechamber. It's
nice and bright in there right now.
  1558   Sat Aug 1 09:24:58 2015 Aidan, AntonioSummaryBEATLasers locked to cavities - no beat - polarization? Transmission issuesBoth lasers have been locked to the cavities
for 24 hours. The slow control of the frequency
is handed off to the PID loop. Antonio and
  1562   Tue Aug 4 17:41:01 2015 Aidan, AntonioSummaryRefCavDAQ running with TRANS channels - strange peaks as we scan the laser frequencyWe now have DC transmission channels in
the frames. I'll post the details soon,
but here's a plot that shows the transmission
  1565   Wed Aug 5 15:59:07 2015 Aidan, AntonioSummaryRefCavACAV transmission on RF photodiodeWe swept the temperature of the ACAV laser
and monitored the transmission through the
cavity. In the attached image, the TEM00
  1577   Thu Aug 27 17:11:43 2015 Aidan, AntonioSummaryBEATTrouble locking - 140kHz notes are switching supplies?We tried locking the PLL today but failed.
Looking at the beat note on the network analyzer
revealed some 70/140kHz harmonics. We thought
  1583   Tue Oct 6 09:11:48 2015 Aidan, AntonioDailyProgressPEMIt's alive! Newport temperature sensors resurrected We finally got the temperature sensors
broadcasting to EPICS channels again - well,
in part anyway. There are a lot of configuration
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