40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 60 of 339  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  14089   Thu Jul 19 18:09:17 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 nn_simulation_mlt_sine_nodes4_lr0p00001_beta1_0p8_beta2_0p85_marked.pdfnn_simulation_2_nodes4_target-1to1_marked.pdf 
  14088   Thu Jul 19 13:35:30 2018 SteveSummaryVACannuloses pumped Roughing down the annuloses required closing
V1 for 13 minutes

IFO is 2.2e-5 Torr
 AnsPumped.png 
  14087   Thu Jul 19 11:01:03 2018 SteveSummaryVACpd81 @ 2e-5 TorrCold cathode gauge just turned on.  pd81@2days.png 
  14086   Thu Jul 19 04:44:09 2018 Annalisa, TerraSummaryThermal Compensationfrequency shift observed with heating!Annalisa, Gautum, Koji, Terra

Summary: with
the reflector setup, we measured a frequency
 scanning_fine_2018-07-19-07-32-08_parsed.pdfscanning_fine_2018-07-19-06-57-47_parsed.pdfYscan_scanning_parsed_2am.txt.pdf 
  14085   Thu Jul 19 01:56:25 2018 gautamSummaryVACAUX pump shutdown[koji,
gautam]

Per Steve's instructions, we
  
  14084   Wed Jul 18 23:43:50 2018 KojiUpdateGeneralVent 80 recoveryIs the reflector too close to the beam
and causing clipping?

 IMG_5868.JPGIMG_5382.JPG 
  14083   Wed Jul 18 17:36:50 2018 SteveSummaryVACpumpdown 81 at 6 +9 hrs completedIFO P1 6e-4 Torr,  manual gate valve
is fully open

The annuloses will be pumped down
 pd81completed.pngpd81@30hrs.png 
  14082   Wed Jul 18 12:49:08 2018 SteveSummaryVACpumpdown 81 at 6 +4.5hrsThe manual gate valve scan was clean. Atm1
    TP1 was pumping on it overnight.

         
 manlGateScan.pnghanding_over_Mag.pngTGVw2auxfans_.jpg 
  14081   Wed Jul 18 03:14:48 2018 AnnalisaUpdateGeneralVent 80 recovery[Gautam, Johannes, Koji, Annalisa]

Tonight we increased the power
of the PSL laser and we achieved the lock
  
  14080   Tue Jul 17 22:25:41 2018 KojiSummaryVACpumpdown 81 at 6 hrs10:20PM


Opened VM2 to pump down
the RGA section with TP1
Stopped
  
  14079   Tue Jul 17 18:16:38 2018 SteveSummaryVACpumpdown 81 at 6 hrsPrecondition:  4 days at atm.  
Atm5

HEPA tent used during the vent
 6x 
  14078   Tue Jul 17 17:37:46 2018 Annalisa, TerraConfigurationThermal CompensationHeaters installationSummary

We
installed two heaters setup on the ETMY bench
in order to try inducing some radius of curvature
 6x 
  14077   Tue Jul 17 12:55:45 2018 KojiSummaryGeneralStarted pumping[Steve, Koji, Gautam]

We started pumping down
at ~12:15PM.
 6x 
  14076   Tue Jul 17 12:46:28 2018 ranaUpdateGeneralsome notes from yesterdayFor the EY, instead of balancing the table,
I just moved the weight approximately so
that the ETMY OSEMS were at half light, but
  
  14075   Tue Jul 17 01:07:40 2018 gautamUpdateSUSETMY EQ stopsFor the heater setup on EY table, I EQ-stopped
ETMY. Only
  
  14074   Mon Jul 16 18:12:00 2018 KojiUpdateVACAdding a manual gate valve between TP1 and V1/VM2[Steve Koji]

We are in the process of adding
a manual gate valve between TP1 (Osaka Maglev)
 P_20180716_155413.jpgP_20180716_155645.jpgP_20180716_155738.jpgP_20180716_162307.jpgP_20180716_172000.jpg 
  14073   Mon Jul 16 15:07:19 2018 KojiSummaryVACOven C vent[Steve Koji]

- Attachment1: Removed the thermal
cap. Checked the temperature of the oven.
 P_20180716_141512.jpgP_20180716_141601.jpgP_20180716_141610.jpgP_20180716_141827.jpgP_20180716_143901.jpg 
  14072   Sat Jul 14 16:04:34 2018 aaronUpdateOMCChecking OMC ElectronicsNext check is the DCPD/OMMT Satellite
Box

I traced a cable from the
OMC electrical feedthrough flanges to find
 Screenshot_2018-07-14_17.53.40.pngScreenshot_2018-07-14_17.57.17.png 
  14071   Fri Jul 13 23:39:46 2018 AnnalisaConfigurationThermal CompensationThermal compensation setup - power supply[Annalisa, Rana]

In order to power the heater setup
to be installed in the ETMY chamber,
 IMG_2012.jpgIMG_2013.jpg20180713_213818.jpg 
  14070   Fri Jul 13 23:23:49 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 nn_simulation_2_nodes4_lr0p00001_beta1_0p8_beta2_0p85.pdfnn_simulation_2_nodes8_lr0p00001_beta1_0p8_beta2_0p85.pdf 
  14069   Fri Jul 13 20:36:33 2018 KojiSummaryGeneralIn vac/In air heater wiring I went to the Y-end and took more photos
of the cable stand. These revealed that in-vac
pin #13 is connected to the shield of the
 heater_wiring.pdf 
  14068   Fri Jul 13 18:01:13 2018 gautamUpdateGeneralLow power MCAfter getting the go ahead from Steve,
I removed the physical beam block on the
PSL table, sent the beam into the IFO, and
  
  14067   Fri Jul 13 17:13:45 2018 KojiUpdateGeneralVent objectives and prepNotice:
I removed these 75Ohm video cables.
 P_20180713_020603.jpg 
  14066   Fri Jul 13 16:26:52 2018 SteveUpdateVACVent 80 is completing...Steve and Aaron,

6 hrs vent is reaching equlibrium
to room air. It took 3 and a half instrument
 @atm.pngvent80_7h.pngventregN2&Air_c.jpg 
  14064   Fri Jul 13 10:54:55 2018 aaronUpdateVACVent 80[aaron, steve]

Steve gave me a venting tutorial.
I'll record this in probably a bit more
 vent80wtiptilts.png 
  14063   Fri Jul 13 02:52:11 2018 gautamUpdateGeneralVent objectives and prep[KA,
GV]
 preVentStatus.png 
  14062   Fri Jul 13 00:15:13 2018 Annalisa, TerraConfigurationAUXY arm cavity scan [Annalisa, Terra, Koji, Gautam]

Summary: We
find a configuration for arm scans which
 IMG_6492.JPGIMG_6494.JPG 
  14061   Thu Jul 12 23:59:14 2018 gautamUpdateGeneralVent objectives and prepVent
objectives:
  
  14060   Thu Jul 12 21:16:25 2018 aaronUpdateOMCChecking OMC ElectronicsIn preparation for tomorrow's vent,
I'm checking some of the OMC-related
electronics we plan to use.
  
  14059   Thu Jul 12 16:18:22 2018 SteveUpdateVACVent preparationsWe are getting ready to vent.

 
 before_Vent.pngbefore_Vent_cond.png 
  14058   Thu Jul 12 15:15:47 2018 SandrineUpdate Beat Note Measurements for Cavity Scans(Gautam, Sandrine)

We calculated the expected power
of the beat note for Annalisa's Y arm
  
  14057   Thu Jul 12 14:06:39 2018 keerthanaUpdateelogFinesse and Analytical solution - ComparisonI tried to compare the cavity scan data
we get from the Finesse simulation and that
we expect from the Analytical solution. The
 finesse_cavity.pngAnalytical1.pdfFinesse_Analytical.pdfDifference.pdf 
  14056   Thu Jul 12 12:26:39 2018 aaronUpdateGeneralOMC revivalWe found a diagram describing the DC Readout
wiring
scheme on the wiki page for DC
  
  14055   Thu Jul 12 11:13:39 2018 gautamUpdateGeneralOMC revivalAaron and I are going to do the checkout
of the OMC electronics outside vacuum today.
At some point, we will also want to run a
  
  Draft   Wed Jul 11 18:13:19 2018 keerthanaSummaryAUXGouy Phase Measurements from AUX-Laser ScansFrom the Measurement Jon made, FSR is 3.967
MHz and the Gouy phase is 52 degrees. From
this, the length of the Y-arm cavity
  
  14053   Wed Jul 11 16:50:34 2018 poojaUpdateCamerasUpdate in developing neural networksAim: To develop a neural
network that resolves mirror motion from
 graphs.pdf 
  14052   Wed Jul 11 16:23:21 2018 aaronUpdateOMCCoordination of the Output Mode-cleaner Mirror Insertion Expedition (COMMIE)I started this document on my own with
notes as I was tracing the beam path through
the output optics, as well as some notes
  
  14051   Wed Jul 11 15:57:00 2018 aaronUpdateOMCReviving OMC electronicsGautam showed me the electronics racks
for the OMC PZTs and DAQ. I'm in the
process of chasing down what channels we
  
  14050   Tue Jul 10 23:44:23 2018 AnnalisaConfigurationThermal CompensationHeater setup assembly[Annalisa, Koji]

Today both the heater and the reflector
were delivered, and we set down the setup
 8x 
  14049   Tue Jul 10 16:59:12 2018 Izabella PastranaHowToComputer Scripts / ProgramsTaking Remote TF Measurements with the Agilent 4395AI copied the netgpibdata folder
onto rossa (under the directory ~/Agilent/),
which contains all the necessary scripts
  
  14048   Tue Jul 10 14:20:09 2018 steveUpdateGeneralprojector light bulb replacedBulb replaced at day 110  We have
now spare now.

 
  
  14047   Mon Jul 9 17:29:28 2018 Udit KhandelwalSummaryTip-TIltTipTilt mirror holder final changesFinal Summary of changes to mirror holder
in Tip-Tilt holder.

Determining minimum range
 d_COM.png1-1.png1-2.png2-1.png 
  14046   Mon Jul 9 12:36:32 2018 poojaUpdateGeneralProjector light bulb blown outProjector light bulb blown out today.   
  14045   Sun Jul 8 22:27:25 2018 keerthanaUpdate AUX diagram(Analisa, Keerthana, Sandrine)

So far we tried four different
techniques to scan the AUX laser. They are,
 PLL-single_demodulation.pdfPLL-double_demodulation.pdf 
  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 
  14043   Sat Jul 7 19:50:38 2018 AnnalisaConfigurationThermal CompensationStudy about the Thermal projection setup and its effect on the cavityI made some simulation to study the change
that the heater setup can induce on the Radius
of Curvature of the ETM.
 6x 
  14042   Fri Jul 6 19:39:37 2018 Udit KhandelwalSummaryGeneralCAD drawings of cantilever suspension requiredRequest
to Koji to acquire the drawings or 3D CAD
of the cantilever suspensions of the Tip-Tilt
  
  14041   Fri Jul 6 12:12:09 2018 AnnalisaConfigurationThermal CompensationThermal compensation setupI tried to put together a rudimentary heater
setup. 

As a heating element, I used the
 IMG_1887.jpgIMG_1884.jpgIMG_1883.jpgIR20180706_0358_labels.png 
  14040   Thu Jul 5 17:58:04 2018 keerthana, sandrineUpdateelog (Analisa, Sandrine, Keerthana)

Today Annalisa helped us to understand
the new set up used to make the frequency
 setup1.jpgsetup2.jpg 
  14039   Thu Jul 5 17:33:36 2018 keerthana, sandrineUpdateelogLights not working
N/S ARM FL.
N/S ARM
INC.


These two lights inside
the 40m-lab are not working.
  
ELOG V3.1.3-