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ID Date Authorup Type Category Subject Text Attachments
  9420   Thu Nov 21 10:24:50 2013 KojiUpdateSUSbeam dumpsYou don't need the fourth glass piece on
the diamond beam dump.
  
  15930   Wed Mar 17 11:57:54 2021 Paco, AnchalUpdateSUSTested New Input Matrix for MC1[Paco, Anchal]

Paco accidentally clicked on C1:SUS-MC1_UL_TO_COIL_SW_1_1
(MC1 POS to UL Coil Switch) and clicked it
 20210317_MC1_InMATtest.pdfMC1_Input_Matrix_Test.tar.gz 
  7358   Fri Sep 7 09:37:20 2012 SteveUpdateCamerasbaffle plate for SOS

    

       
            
 IMG_1624.JPGIMG_1618.JPGIMG_1616.JPG 
  7375   Wed Sep 12 17:02:00 2012 SteveUpdateCamerasbaffle plate hole getting larger

    

       
            
 IMG_1631.JPGIMG_1628.JPG 
  9419   Thu Nov 21 09:56:15 2013 SteveUpdateSUSgreen glass beam dumps Green
welding glass  is used in these
Koji
 HEXdump.jpgVdump.jpgDiamond1_2inchTraps.jpg 
  15160   Mon Jan 27 21:35:06 2020 YehonathanUpdatePSLRingdown measurementsZeroth
order IMC ringdown setup

Following
 IMC_REFL_Beam_Path.jpg 
  15617   Wed Oct 7 16:56:23 2020 anchalSummaryALSALS noise budget update - Updated AUX PDH Loop valuesAUX PDH Loop update

I
used D1400293
to get the latest logged details about the
 Extract_X_AUX_PDH_Model.zipALS_NoiseBudgetUpdate.pdf 
  11926   Tue Jan 12 03:03:55 2016 ericqUpdateLSCFrequently making noiseGautam will soon follow up with detailed
analysis, but here is a brief summary of
some of our activities and findings.
  
  11924   Sat Jan 9 00:39:15 2016 gautamUpdateLSCAUX Y Freq Noise re-measured


 AuxPLL.pdf 
  11925   Mon Jan 11 19:01:56 2016 gautamUpdateLSCPLL Marconi InvestigationEDIT 01/12/2016 6PM:
I've updated the plots of the in-loop
 6x 
  11929   Tue Jan 12 19:38:31 2016 gautamUpdateLSCFrequently making noiseEDITS
15Jan:


Schematic
 2016_01_AUXLaser.tar.gzOLGs.pdfvariedCurrent.pdfvariedTemp.pdfPLL_setup.pdf 
  15290   Wed Apr 1 00:51:41 2020 gautamUpdateWienerSlightly improved MCL FFSummary:

Retraining the MCL filters resulted
in a slight improvement in the performance.
 MC2_act_calib.pdfIIR_fit_to_FIR.pdfFIRvIIR.pdf 
  15619   Thu Oct 8 11:59:52 2020 ranaSummaryALSALS noise budget update - Updated AUX PDH Loop valuesFor all the loops where we drive the NPRO
PZT, there is some notch/resonance feature
due to the PZT mechanical resonance. In the
  
  3290   Mon Jul 26 10:04:24 2010 steveUpdateGeneralInitial Crane Inspection reveals flaws: wiring, oil and imbalance


   
        
            
 2500.JPGsedrum.JPG 
  3312   Wed Jul 28 16:42:21 2010 steveUpdateGeneralCrane gear box cheched


   
        
            
 P1060503.JPGP1060511.JPGP1060515.JPGP1060517.JPG 
  3378   Fri Aug 6 17:47:36 2010 steveSummaryGeneralcranes load tested at 1998 lbs


   
        
            
 0.9ton.PDFP1060523.JPGP1060532.JPGP1060541.JPG 
  15177   Thu Jan 30 15:24:10 2020 ?UpdateGeneraldelay line frequency discriminator for PMyes, its fine to use this
with a level 3 or level 7 mixer; let's
  
  2438   Mon Dec 21 07:30:58 2009 ???UpdateASSOAF Model update and build instructions What does OAF stand for? The entry
doesn't say that. Also the acronym is not
in the abbreviation page of the wiki.
  
  12153   Tue Jun 7 17:21:13 2016 AakashUpdateGeneralSURF 2016Hi!

I am Aakash Patil. I will be working
at the 40m lab as a SURF student with Gautam
  
  12160   Thu Jun 9 09:57:06 2016 AakashUpdateGeneralSeismometer Enclosure Development
Me and Gautam yesterday
opened the tilt-free seismometer enclosure
to see if we could use the thermocouples
  
  12163   Thu Jun 9 18:54:40 2016 AakashUpdateGeneralAbout Acromag | SURF 2016Today I tried to setup Acromag Busworks
card. I was able to calibrate and test it
over USB but I couldn't test it over
  
  12172   Mon Jun 13 19:30:58 2016 AakashUpdateGeneralEPICS Installation | SURF 2016About acquiring data: Initially I couldn't
start with proper Acromag setup as the Raspberry
pi had a faulty SD card slot. Then Gautam
  
  12224   Tue Jun 28 22:54:43 2016 AakashUpdateGeneralSeismometer Enclosure Development | SURF 2016The existing enclosure for seismometer
at LIGO 40m lab is a cylindrical stainless
steel can placed upside down over the seismometer.
 plot1.pngplot2_corrected.png 
  12225   Wed Jun 29 00:09:36 2016 AakashUpdateGeneralThings from past | SURF 2016I have taken out the heaters and temperature
sensors from the enclosure which was made
by Megan last summer. Soon I will test and
  
  12236   Fri Jul 1 01:52:54 2016 AakashUpdateGeneralSeismometer Enclosure Development | SURF 2016I have transferred most of the temperature
measurement stuff from the front area to
seismometer at the end of Y-arm.  While
 DSC_0677.pngDSC_0678.png 
  12253   Wed Jul 6 16:40:09 2016 AakashUpdateGeneralSeismometer Enclosure Development | SURF 2016I am using AD592CNZ temperature
transducer ICs for measuring temperature
inside as well as outside the enclosure.
 AD592CNZ_avg.pngAD592CNZ_diff.png 
  12273   Fri Jul 8 13:01:23 2016 AakashUpdateGeneralAcromag is talking ! | SURF 2016Acromag is talking now, after few changes
to the original EPICS configuration and cross
compile configuration. Modbus config files
  
  12306   Fri Jul 15 17:44:37 2016 AakashSummaryGeneralAcromag Setup | SURF2016Aidan has described the physical connections
and initial setup here :  https://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:resources:computing:acromag#recovering_from_a_terminal_power_communication_outage 
.
  
  12308   Mon Jul 18 05:05:05 2016 AakashUpdateGeneralHeater for Seismometer Enclosure | SURF 2016I took off the silicon rubber heaters which
were used by a SURF last year for heating
the enclosure. The heater data sheet has
 HEATERS.jpegHEATERS.jpeg 
  12317   Thu Jul 21 05:22:26 2016 AakashUpdateGeneralTemperature measurements across the enclosure | SURF 2016I have measured the transfer function of
temperature fluctuations inside the enclosure
to that of the temperature fluctuations outside.
 script21jul2016.mfig1.pdffig2.pdffig3.pdf 
  12323   Thu Jul 21 21:38:44 2016 AakashUpdateGeneralTemperature measurements across the enclosure | SURF 2016I have made the changes as suggested by
Gautam.
  
  12326   Fri Jul 22 05:20:26 2016 AakashUpdateGeneralTemperature measurements across the enclosure | SURF 2016Please find the new attached plots and
the new script.
 coherence.pdftransferfunc.pdftransferfuncdB.pdfscript22jul2016.m 
  12352   Fri Jul 29 03:44:04 2016 AakashSummary About Acromag | SURF 2016I tried to recompile the modbusApp binary
for linux-arm acrhitecture since I suspected
someting wrong with it. But still the problem
  
  12360   Mon Aug 1 18:50:29 2016 AakashUpdateGeneralAcromag Setup | SURF2016There were many unknown and unsolved problems
with using modbusApp for linux-arm architecture.
So I tried to install the necessary files
 7x 
  12366   Wed Aug 3 15:35:19 2016 AakashUpdateGeneralAcromag Setup | SURF2016Lydia helped me to troubleshoot the Accromag
connection problems which I was facing previously. 
If power goes off/turned off manually, the
  
  3484   Sat Aug 28 08:17:51 2010 AbertoUpdateElectronicsFSS Frequency Generation Box under testI've taken the FSS frequency generation
box out of the 1Y1 rack. It's sitting on
one of the electronics benches. I'm measuring
  
  161   Mon Dec 3 19:44:58 2007 Accelerometers on new mountsConfigurationPEMAndrey
I (Andrey) continued today working with new
accelerometer mounting. (see entry #151 about
 DSC_0194.JPGDSC_0195.JPGDSC_0196.JPG 
  742   Sat Jul 26 15:09:57 2008 AidanUpdateComputersReboot of op440m
I was reviewing the PSL Overview screen this
afternoon and op440m completely froze when
  
  1205   Mon Dec 29 18:01:07 2008 AidanUpdateAuxiliary lockingUpdated 40m Upgrade Document T080074-00-R
Added a paragraph to the 40m Upgrade document
describing the fiber stabilization and frequency
  
  1687   Fri Jun 19 13:39:29 2009 AidanUpdateGeneralUpper limit measurement of the scatter from the eLIGO beam dumps. 
 D0900095_ELIGO_35_WATT_AIR_COOLED_BEAM_DUMP_3INCH_P.POL-3.PDFbeam_dump_expt.pngscatter_measurement1.pdfBRDF1.pdfIMG_0308.JPG 
  1782   Thu Jul 23 07:34:45 2009 AidanUpdateCDSAdded C2 MEDM screens to 40m SVN. 
See Adhikari eLOG entry: http://nodus.ligo.caltech.edu:8080/AdhikariLab/194
  
  2792   Mon Apr 12 17:48:32 2010 AidanUpdateComputer Scripts / Programselog restarted The elog crashed when I was uploading
a photo just now. I logged into nodus and
restarted it.
  
  2793   Mon Apr 12 19:50:30 2010 AidanSummaryGreen LockingTemperature sweep of the Lightwave: df/dT = 2.8GHz/KThe beams from the Innolight and Lightwave
NPROs were both incident on a 1GHZ New Focus
PD. Mott and I swept the temperature of the
 LightWave_temp_sweep.pdfLightWave_Temp.m 
  2807   Mon Apr 19 11:31:04 2010 AidanUpdateGreen Locking1W NPRO output profile

    

       
            
  
  2809   Mon Apr 19 16:27:13 2010 AidanUpdateGreen LockingRaicol crystals arrived and we investigated themJenne, Koji and I opened up the package
from Raicol and examined the crystals under
the microscope. The results were mixed and
  
  2816   Tue Apr 20 11:14:31 2010 AidanUpdateGreen LockingRaicol crystals arrived and we investigated them 
 Here
is Crystal 724 polished side 2 with all photos
  
  2910   Tue May 11 14:39:17 2010 AidanUpdateGreen LockingGreen Laser Beam Profile 
 Here's a photo of the set-up
used. The beam profile is measured relative
 P5110057_beams.jpg 
  2951   Wed May 19 14:36:46 2010 AidanHowToPhase CameraPhase Camera algorithm and stuff I had a think about the algorithm
we might use for the phase camera measurement.
MATLAB has an fft function that will allow
 phase_camera_DC_comp.pdfphase_camera_F1_comp.pdfphase_camera_F2_comp.pdfload_raw_data.m 
  2955   Thu May 20 10:06:56 2010 AidanHowToPhase CameraPhase Camera- raw data video    
  2995   Wed May 26 18:54:55 2010 AidanSummaryGreen LockingMounted Crystal 724 in the Doubling OvenAndri and I mounted the Raicol Crystal
#724 in one of the new Covesion Ovens. The
procedure was the same as before - see
  
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