40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 88 of 346  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  13020   Tue May 30 17:45:35 2017 jigyasaSummaryCamerasGigE configuration To verify the Pylon Installation on the
shared drive, I tried connecting the Basler
acA640-100gm to the PoE connector and running
 GigEconfiguration.pdf 
  13019   Tue May 30 16:02:59 2017 gautamUpdateGeneralCoil driver boards reinstalledI think the reason I am unable to engage
the de-whitening is that the OL loop is injecting
a ton of control noise - see Attachment #1.
 OL_noiseInjection.pdf 
  13018   Tue May 30 13:36:58 2017 SteveUpdateOptical LeversETMY Oplev HeNe is replacedFinally I reallized what is killing the
ETMY oplev laser. Wrong 
power supply, it  was driving the
 oplevETMY120d.png 
  13017   Mon May 29 16:47:38 2017 gautamUpdateGeneralCoil driver boards reinstalledYesterday,
I reinstalled the de-whitening boards + coil
driver boards into their respective Eurocrate
 deWhitening_consolidated.pdfdeWhitening_measurements.zipETMY_OL.png 
  13016   Sat May 27 10:26:28 2017 KaustubhUpdateGeneralTransimpedance CalibrationUsing Alberto's paper LIGO-T10002-09-R
titled "40m RF PDs Upgrade", I
calibrated the vertical axis in the bode
 ET-3040_test_transimpedance.pdfET-3010_test_transimpedance.pdfFormula_for_Transimpedance.pdf 
  13015   Thu May 25 19:27:29 2017 gautamUpdateGeneralCoil driver board noises [Koji, Gautam]

Summary: 


Attachment
#1 shows the measured/modeled noise
 coilDriverNoises.pdf 
  13014   Thu May 25 18:37:11 2017 jigyasaUpdateComputer Scripts / ProgramsMaking pylon installation on shared directoryGautam helped me execute the commands mentioned
above and Pylon has now been installed
on the shared directory. We extracted the
  
  13013   Thu May 25 16:42:41 2017 jigyasaUpdateComputer Scripts / ProgramsMaking pylon installation on shared directoryI have been working on interfacing with
the GigE’s. I went through Joe Be’s
paper and the previous elogs and verified
  
  13012   Thu May 25 12:22:59 2017 gautamUpdateCDSslow machine bootfestAfter ~3months without any problems on
the slow machine front, I had to reboot 
  
  13011   Wed May 24 18:19:15 2017 KaustubhUpdateGeneralET-3010 PD TestSummary:

In continuation to the previous
test conducted on the ET-3040 PD,  I
 PD_test_setup.pngET-3010_test.pdfET-3010_test.zip 
  13010   Tue May 23 22:58:23 2017 gautamUpdateGeneralDe-Whitening board noisesSummary:

I
 ITMX_deWhite_ch1_noise.pdf 
  13009   Tue May 23 18:09:18 2017 KaustubhConfigurationGeneralTesting ET-3010 PDIn continuation with the previous(ET-3040
PD) test.

The ET-3010 PD requires to be fiber
  
  13008   Tue May 23 16:33:00 2017 SteveUpdateOptical LeversBeam Profiling Results You may compare your results with this.

RXA: please no, that's not
the right way
  
  13007   Tue May 23 15:22:04 2017 ranaUpdateOptical LeversBeam Profiling Results
Include several sources of error.
Micrometer error is one, but you should be
able to think of at least 3 more.
There
  
  13006   Tue May 23 10:27:24 2017 DhruvaUpdateOptical LeversBeam Profiling Results I have attempted to calculate the
instrument error (micrometer least count)
using the values of the spot size obtained
 6x 
  13005   Mon May 22 18:20:27 2017 KaustubhSummaryGeneralTesting of the new Photo Detectors ET-3010 and ET-3040I am adding the text files with the data
readings and paramater settings along
with the Bode Plot of the data. I plotted
 ET-3040_test.zipET-3040_test.pdf 
  13004   Mon May 22 15:01:41 2017 jigyasaUpdatetelescope designUpdated Telescope design with 1'' eye pieceI examined
the use of a single lens system for the available
range of focal lengths, for the required
 1incep.pdf 
  13003   Mon May 22 13:37:01 2017 gautamUpdateGeneralDAC noise estimateSummary:

I've
 DAC_noise_model.pdfC1NB_disp_40m_MICH_NB_22_May_2017.pdf 
  13002   Mon May 22 10:53:02 2017 DhruvaUpdateOptical LeversBeam Profiling Results  




 6x 
  13000   Mon May 22 10:15:14 2017 jigyasaSummarytelescope designLens tubes and object distancesSince the
f numbers of the lenses in the proposed design
with biconvex lenses are a little less than
 Pictures1.pdf 
  12999   Fri May 19 19:18:53 2017 KaustubhSummaryGeneralTesting of the new Photo Detectors ET-3010 and ET-3040Motivation:

I got some hands-on-experience
on using RF photodetectors and the Network
 IMG_20170519_173247922.jpgIMG_20170519_173253252.jpgIMG_20170519_173300174.jpgPD_test_setup.png 
  12998   Thu May 18 15:20:29 2017 jigyasaSummarytelescope designTelescope Design for the Gig-E camerasWith the objective of designing a telescope
system for the Gig-E, a system of two lenses
is implemented. A rough schematic of
 6x 
  12997   Wed May 17 18:08:45 2017 DhruvaUpdateOptical LeversBeam Profiling SetupAndrew and I set up the razor blade beam
profiling experiment for He-Ne lasers on
the "SP" table.  Once I receive
 1.jpg2.jpg3.jpg4.jpg5.jpg 
  12996   Wed May 17 11:10:31 2017 SteveUpdateCamerasMC2 CCD video camera back in placeOlympus camera is removed and our old CCD
camera is back to monitor the face of MC2

  
  12995   Wed May 17 08:19:59 2017 SteveUpdateSUS4.1M earthquake Sus dampings recovered. ETMY oplev needs
to be recentered.

 eq_4.1_SantaBarbara.png4.1m_Isla_Vista_CA.png 
  12994   Tue May 16 16:16:16 2017 SteveUpdatesafetysafety training Early surfs of India Jigyasa and
Kaustubh received basic 40m specific safety
traning.
 surfs2017.jpg 
  12993   Mon May 15 20:43:25 2017 ranaConfigurationComputerscatastrophic multiple monitor failuresthis is not the right one; this Ethernet
controlled strip we want in the racks for
remote control.
  
  12992   Mon May 15 19:21:04 2017 KojiUpdateComputer Scripts / ProgramsFSSslow / MCautolocker restartedIt seems that FSS slow servo stopped working.

I found that megatron was restarted
(
  
  12991   Mon May 15 08:26:43 2017 ranaUpdateCDSSVN up in userapps/cdsI did an 'svn update' in userapps/cds/
which pulled in some changes from the sites
as well as various CDS utilities in common/
  
  12990   Fri May 12 18:50:08 2017 gautamUpdateGeneralITM and BS coil driver + dewhite board pulled outI've uploaded high-res photos + marked
up schematics to the same DCC page linked
in the previous page. I've noted the
  
  12989   Fri May 12 18:45:04 2017 rebeccaUpdateCamerasMC2 Pics with OlympusRaw and JPG formats of the pictures are
saved on the Mac in the control room and
at this link:
  
  12988   Fri May 12 12:34:55 2017 gautamUpdateGeneralITM and BS coil driver + dewhite board pulled outI first set the bias sliders to 0 on the
MEDM screen (after checking that the nominal
values were stored), then shut down the watchdogs,
  
  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 
  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 
  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.
  
  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,
  
  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 
  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
  
  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
  
  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
  
  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 
  12978   Tue May 9 15:23:12 2017 SteveConfigurationComputerscatastrophic multiple monitor failuresGautam and Steve,

Surge
protective power strip was install on
 Trip-Lite.jpg 
  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 
  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
  
  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 
  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
  
  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 
  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 
  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
  
  12970   Thu May 4 08:00:54 2017 SteveUpdatesafetysafety trainingFreshmen Rebecca Zhang as " work study
undergrad "  received 40m specific
basic safety training yesterday.
  
ELOG V3.1.3-