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ID Date Author Type Category Subject Text Attachments
  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.
  
  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.
  
  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 
  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.

  
  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
  
  12965   Wed May 3 16:12:36 2017 johannesConfigurationComputerscatastrophic multiple monitor failuresIt seems we lost  monfight.jpg 
  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 
  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 
  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.
  
  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
  
  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 
  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.
  
  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
  
  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 
  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
  
  12955   Fri Apr 28 13:56:26 2017 ranaUpdateGeneralDRMI locking one of these signals does not look like
the others: explanation?
  
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