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ID Dateup Author Type Category Subject Text Attachments
  12938   Mon Apr 10 18:42:09 2017 johannesUpdateCamerasPylon installation warningIt looks like we may not need to use this
old Pylon version after all. Gautam and I
looked into installing SnapPy with the makefile
  
  12939   Tue Apr 11 00:38:37 2017 gautamUpdatePSLPMC demod moved off servo boardAs discussed at the Wednesday meeting last
week, I tried moving the demodulation of
the PMC error signal off the PMC servo board,
 PMC_Ctrl_spec.pdf 
  12940   Wed Apr 12 00:36:53 2017 gautamUpdatePSLPMC demod moved off servo boardHere is a more detailed comparison of the
spectra of the signals at the front panel
DAQ LEMO output, measured with the Agilent
 PMC_digitalSpec.pdfPMC_DAQ_spectra.pdf 
  12941   Thu Apr 13 09:48:37 2017 SteveUpdateSUSITMY-UL and ETMX sensorsWhy ITMY UL can not see this earth quake?
SRM and PRM are misaligned. ETMX is still
not well.
 ITMY.pngITMY-UL.pngETMX?.png 
  12942   Thu Apr 13 19:54:07 2017 ranaUpdateDAQcheckup on minute trendsOur minute trends are still not available
through NDS2 from the outside world due to
the bad config of the DAQ, but I can confirm
 BRLMS-trend.png 
  12943   Thu Apr 13 21:01:20 2017 ranaConfigurationComputersLG UltraWide on Rossawe installed a new curved 34" doublewide
monitor on Rossa, but it seems like it has
a defective dead pixel region in it. Unless
 LG34c.jpgcrack.jpg 
  12944   Tue Apr 18 01:01:03 2017 gautamUpdatePSLPMC OLTF measured, DAQ channels calibratedQuick entry, details to follow in the AM
tomorrow.


I calibrated the PMC DAQ
 PMCspectra_calibrated.pdfPMC_MEDMs.png 
  12945   Tue Apr 18 16:10:00 2017 gautamUpdatePSLPMC OLTF measured, DAQ channels calibratedHere are the details:


PMC OLTF:


the
procedure used was identical to what Koji
 PMC_OLTF_170418.pdf 
  12946   Tue Apr 18 23:37:15 2017 ranaUpdatePSLPMC OLTF measured, DAQ channels calibratedWhat's
the reasoning behind setting the the gain
  
  12947   Wed Apr 19 15:13:30 2017 gautamUpdatePSLPMC/MCL multicoherenceI used a one hour stretch of data from
last night to look at coherence between the
PMC control signal and MCL, to see if the
 PMC_MCL_multicoherence.pdf 
  12948   Wed Apr 19 15:46:24 2017 gautamUpdateGeneral1611/1811 inventory checkI looked through the lab area to do a fast
photodiode inventory check, as we may need
to buy some for the higher order mode spectroscopy
  
  12949   Fri Apr 21 13:59:47 2017 Eric GustafsonSummary 1064 nm Semiconductor Laser Fiber Distribution System and Mirror Tomography1064 nm Semiconductor Laser Fiber
Distribution System and Mirror Tomography

Below threshold these Semiconductor
  
  12950   Tue Apr 25 19:35:41 2017 gautamUpdateGeneralIPCS -qDataviewer wouldn't launch on pianosa
- it seemed to work fine on Donatella though.
Rana suggested using the ipcs -q command.
  
  12951   Wed Apr 26 01:00:23 2017 gautamUpdateGeneralDRMI locking Since we'd like to get back to DRSE
locking, I tried locking the DRMI tonight.
I did the following:
 DRMI_1f_26April2017.pngIMG_7373.JPGIMG_7372.JPG 
  12952   Thu Apr 27 16:41:13 2017 Eric GustafsonUpdateLSC Status of the 40 m PD Frequency Response Fiber SystemThere two reports in the DCC describing
the state of the system as of October 2014
including: (1)  Alex Cole’s “T1300618
  
  12953   Thu Apr 27 17:55:33 2017 SteveUpdateCameraswhich camera to use for IR scatterring picturesYesterday I failed to take good pictures
of ETMY  resonant arm of 1064 nm with
Cannon Rebel T3i in RAW 22-27Mp & JPG
 P4270081RAWolym.jpgImg0344.jpg 
  12954   Fri Apr 28 02:04:36 2017 gautamUpdateGeneralDRMI locking I got a couple of ~30min long DRMI lock
stretches today. The settings I used are
essentially the same as what I had back in
 20170428_DRMI.pdf 
  12955   Fri Apr 28 13:56:26 2017 ranaUpdateGeneralDRMI locking one of these signals does not look like
the others: explanation?
  
  12956   Fri Apr 28 18:01:56 2017 rebeccaUpdateCamerasAttempting to Load Camera ClientUsing /ligo/apps/linux-x86-64/camera/bin/camera_client.py
-c  /opt/rtcds/caltech/c1/scripts/GigE/SnapPy/L1-CAM-MC1.ini,
the Python script was able to run without
  
  12957   Fri Apr 28 19:32:06 2017 gautamUpdateGeneralDRMI locking - PRCL angular FFI took a closer look at the POP QPD/ PRC
angular feedforward situation yesterday.
I thought it would be useful to have a 
 PRC_angularFF.pdfPRC_TFs.pdf 
  12958   Fri Apr 28 22:50:35 2017 johannesUpdateCamerasAttempting to Load Camera ClientYou'll likely have to run camera_server.py
using the same ini file first before you
can use the client. Since the pylon installation
  
  12959   Sun Apr 30 13:24:00 2017 ranaUpdateCamerasAttempting to Load Camera ClientWe ought to put the camera software on
the shared disk; I don't think there's
any speed reasons that it needs to be local.
  
  12960   Mon May 1 16:29:51 2017 gautamUpdateGeneralDRMI locking For the traces I posted, I had not turned
on the whitening for the SRCL sensing PD
(REFL55). However, I took a spectrum on a
 LSC_sensingNoise.pdfIMG_7378.JPG 
  12961   Mon May 1 17:14:58 2017 SteveUpdateCamerasETMY & MC2 ccd cameras removedMC2 ccd camera is replaced by Olympus 570
zoom temporarly.

So as the ETMY ccd camera is replaced
  
  12962   Mon May 1 21:45:54 2017 ericqUpdateGeneralDRMI locking Comparing counts doesn't get you anywhere;
each PD has different whitening gain which
may vary from measurement to measurement.
  
  12963   Wed May 3 16:00:00 2017 gautamSummaryGeneralNetwork Topology Check[johannes, gautam]

I forgot we had done this last
year already, but we updated the control
 Network_topology_3May2017.pdf 
  12964   Wed May 3 16:02:36 2017 SteveUpdateGeneralPI pzt inventory checkOne is broken, two are ready to steer green
and 3 available in un known condition

 
 IMG_3678.JPGPIpztETMYgreen.jpg 
  12965   Wed May 3 16:12:36 2017 johannesConfigurationComputerscatastrophic multiple monitor failuresIt seems we lost  monfight.jpg 
  12966   Wed May 3 16:46:18 2017 KojiConfigurationComputerscatastrophic multiple monitor failures- Is there any machine that can handle
4K? I have one 4K LCD for no use.
- I also can donate one 24" Dell
  
  12967   Wed May 3 16:47:45 2017 KojiUpdateGeneralPI pzt inventory checkI also have a functional one on my desk,
which has one of the wires repaired.

  
  12968   Wed May 3 17:16:30 2017 PrafulUpdateElectronicsNew Altium Schematic Design for Microphone AmpI made an Altium schematic for the microphone
amplifier circuit for fabrication.

mic_schematicv2.pdf
 mic_schematicv2.pdf 
  12969   Wed May 3 18:45:45 2017 ranaUpdateGeneralDRMI locking [quote]Comparing counts doesn't get you anywhere;
each PD has different whitening gain which
may vary from measurement to measurement.
  
  12970   Thu May 4 08:00:54 2017 SteveUpdatesafetysafety trainingFreshmen Rebecca Zhang as " work study
undergrad "  received 40m specific
basic safety training yesterday.
  
  12971   Thu May 4 09:52:43 2017 ranaConfigurationComputerscatastrophic multiple monitor failuresThat's a new failure mode. Probably
we can't trust the power to be safe anymore.

Need Steve to order a couple
  
  12972   Thu May 4 19:03:15 2017 gautamUpdateGeneralDRMI locking - preliminary MICH NBSummary:

 DRMI_noArms_April30.pdfMICH_OLTF.pdfC1NB_disp_40m_MICH_NB_30_April_2017.pdf40m_REFL_RFPDs_efficiency.pdf 
  12973   Fri May 5 08:41:42 2017 SteveUpdateCamerasMC2 resonant picturesOlympus SP570 UZ - without  IR blocker,
set up as Atm.3  Camera distance to
MC  face ~85 cm,  IOO-MC_TRANS_SUM
 P5040028MC2c.jpgIMG_3682.JPGIMG_3688.JPG 
  12974   Fri May 5 10:13:02 2017 ericqUpdateGeneralMICH NB questionsIs suspension thermal noise missing? I take
it "Thermal" refers just to thermal things
going on in the optic, since I don't see
  
  12975   Fri May 5 12:10:53 2017 gautamUpdateGeneralMICH NB questions[quote]Is suspension thermal noise missing?
I take it "Thermal" refers just
to thermal things going on in the optic,
 C1NB_disp_40m_MICH_NB_30_April_2017.pdf 
  12976   Sat May 6 21:52:11 2017 ranaUpdateGeneralMICH NB questionsI think the most important next two items
to budget are the optical lever noise, and
the coil driver noise. The coil driver noise
  
  12977   Mon May 8 21:53:56 2017 ranaSummarySEIattempt to get seismic BLRMS minute trendI tried to
get some minute trend data today, but was
unable to get it from inside or outside the
 BLRMS_trend.png 
  12978   Tue May 9 15:23:12 2017 SteveConfigurationComputerscatastrophic multiple monitor failuresGautam and Steve,

Surge
protective power strip was install on
 Trip-Lite.jpg 
  12979   Wed May 10 01:56:06 2017 gautamUpdateGeneralMICH NB - OL couplingLast night, I tried to estimate the contribution
of OL feedback signal to the MICH length
error signal.

In order to do so,
 OL_BS_ITM_comp.pdfC1NB_disp_40m_MICH_NB_8_May_2017.pdfC1NB_disp_40m_MICH_NB_10_May_2017.pdf 
  12980   Wed May 10 12:37:41 2017 gautamUpdateCDSMCautolocker deadThe MCautolocker had stalled - there were
no additional lines to the logfile after
12:17pm (~20mins ago). Normally, it suffices
  
  12981   Wed May 10 16:53:38 2017 ranaUpdateGeneralMICH NB - OL couplingThat's a good find.


The OL control signal can
be gotten from the DQ error signal. You just
  
  12982   Wed May 10 16:57:52 2017 ranaUpdateCDSMCautolocker deadI rebooted megatron around 12:20 today.
It had dozens of stalled medm process (some
of them there since February!). I couldn't
  
  12983   Wed May 10 17:17:05 2017 gautamUpdateGeneralDAC / Coil Driver noiseSuspension
Actuator noise:

There
are 3 main sources of electronics noise which
 actuation.jpg 
  12984   Wed May 10 17:46:44 2017 gautamUpdateGeneralDAC / Coil Driver noise - SRM coil driver + dewhite board removedI've
removed the SOS coil driver (D010001-B,
  
  12985   Thu May 11 09:45:46 2017 ranaUpdateGeneralDAC / Coil Driver noise - SRM coil driver + dewhite board removedI believe the ETMs and ITMs are different
from the others.
  
  12986   Thu May 11 18:59:22 2017 gautamUpdateGeneralSRM coil driver + dewhite board initial surveyI've added marked-up schematics + high-res
photographs of the SRM coil driver board
and dewhitening board to the 40m DCC Document
 D010001-B_40m.pdfD000183-C8_40m.pdf 
  12987   Fri May 12 01:36:04 2017 gautamUpdateGeneralSRM coil driver + dewhite board LISO modelingI've
made the LISO models for the dewhitening
board and coil driver boards I pulled out.
 SRM_bypass_plus_CoilDriver.pdfliso.zip 
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