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  40m Log, Page 201 of 341  Not logged in ELOG logo
ID Date Authorup Type Category Subject Text Attachments
  10935   Fri Jan 23 14:25:03 2015 evanUpdateCDSNew netgpib scripts for SR785Does netgpibdata/TFSR785
work at the 40m currently? I rsynced the
netgpibdata
 TFSR785.zip 
  228   Wed Jan 9 10:47:15 2008 frickeUpdateComputersethernet wiring in office/control roomThe electrical people have been here for three
days, installing ethernet cables and drops
in the 40m office area, in the old conduits
  
  9575   Sat Jan 25 21:09:16 2014 gabrieleHowToLSCProcedure to measure PRC lengthI know the drawing is wrong.
I put random distances, not realistic ones,
and I did not try to get something close
  
  12063   Tue Apr 5 11:42:17 2016 gaericqutamUpdateendtable upgradeTABLE REMOVALThere is currently no table at
the X end! 

We have moved the vast majority
  
  8684   Wed Jun 5 20:45:19 2013 gautamUpdateGeneralITMx Oplev Fixed

    

       
            
 ITMx_overview.JPGITMx_clipping_.JPG 
  8688   Fri Jun 7 17:12:46 2013 gautamUpdateGeneralProjector - lightbulb replaced

    

       
            
  
  8735   Thu Jun 20 20:46:16 2013 gautamUpdateIOOWFS debugging-QPD debugging 
 I wanted to make sure that
the QPD map on the C1IOO_MC_TRANS_QPD.adl
 MC2_QPD-map.png 
  8745   Tue Jun 25 12:42:16 2013 gautamUpdateGeneralSerial-interface with Doubling Oven at Y endSummary 
I have been working on setting up
a serial-link with the temperature controller
  
  8746   Tue Jun 25 19:18:07 2013 gautamConfigurationendtable upgradeplan of action for PZT installation  This entry is
meant to be a sort of inventory check and
  
  8755   Wed Jun 26 11:45:06 2013 gautamUpdateGeneralPID tuning-Doubling Oven at Y end 
Summary
Having established the serial link
 oven-loop.pdfTime_series.pngfit_attempt.png 
  8758   Wed Jun 26 19:02:38 2013 gautamUpdateGeneralITMx Oplev (not quite?) Fixed 
Summary:
Steve and I tried to fix the Oplev
 oplev_chamber.pdfphoto_1.JPGphoto_2.JPG 
  8770   Thu Jun 27 18:11:53 2013 gautamUpdateGeneralITMx Oplev-POX looks beam okay 
 Jenne just aligned the X arm
and I got a chance to check the status of
  
  8777   Thu Jun 27 23:01:39 2013 gautamUpdateGeneralITMx Oplev-servo gains adjusted 
 With rana's input, I changed
the ITMx oplev servo gains given the beam
 pitch-plot.pdfyaw-plot.pdf 
  8784   Fri Jun 28 13:10:28 2013 gautamUpdateGeneralITMx Oplev-servo gains adjusted 
 As mentioned in elog
8770, I wanted to give the POX beam a
 pitch-plot_copy.pdfyaw-plot_copy.pdf 
  8789   Tue Jul 2 00:25:14 2013 gautamUpdateGreen LockingUniversal PDH box tuning [Koji, Annalisa, Gautam]
Annalisa noticed that over the weekend
the Y-arm green PDH was locked to a sideband,
 circuit.pdfmodel.pdf 
  8800   Wed Jul 3 21:19:04 2013 gautamConfigurationendtable upgradeplan of action for PZT installation This is an update on the situation
as far as PZT installation is concerned.
I measured the required cable (PZT driver
 DAC_bank.pngASC_schematic.pdf 
  8804   Mon Jul 8 13:45:19 2013 gautamConfigurationendtable upgradeDriver board verificationWith the help of an expansion card,  I
verified that the + 15V and + 24V
from the eurocrate in the slot I've identified
  
  8809   Tue Jul 9 11:37:37 2013 gautamUpdateCDSset up for testing DAC Interface-board pin outsThe bank marked channel 9-16 is free, but
the connector is a 40 pin IDC and I need
to know the exact pin-out configuration before
  
  8811   Tue Jul 9 12:01:20 2013 gautamUpdateCDSset up for testing DAC Interface-board pin outs 
 Jenne just rebooted c1scy and
daqd on the framebuilder. We will do the
  
  8814   Tue Jul 9 18:44:37 2013 gautamUpdateCDSDAC Interface Board-Pin Outs  Summary:
The pin-outs for the DAC interface
board have been determined.
 DAC_Interface_Board_Pin-out.pdfbreak-out_ribbon.JPG 
  8817   Wed Jul 10 01:27:44 2013 gautamUpdateGreen LockingY-end Green PDH open-loop transfer function [Annalisa, gautam]
Summary:
We have measured the open-loop transfer
 Green_PDH_measurement.pdfY-end_Green_PDH.pdf 
  8823   Wed Jul 10 22:41:06 2013 gautamConfigurationendtable upgradePZT Driver Board I
did the following with the 
 HV_Amplifier.pdf 
  8832   Thu Jul 11 23:50:57 2013 gautamConfiguration PZT Driver Board-changes made Summary:

 ASC_schematic.pdfDAC_Max_output.JPG 
  8845   Mon Jul 15 11:51:18 2013 gautamConfigurationendtable upgradeDAC at 1Y4-Max Output and Power Spectrum Summary:
I measured the maximum output of
the DAC at 1Y4 as well as its power spectrum.
 max_amp.JPGmax_amp_all_channels.JPGDACOffPowerSpec.pdfDACOnPowerSpec.pdfDAC2kPowerSpectrum.pdf 
  8848   Mon Jul 15 15:54:20 2013 gautamConfigurationendtable upgradeDAC at 1Y4- Power Spectrum -with the right units

    

       
            
 DACOffPSD.pdfDAC500PSD.pdfDAC2000PSD.pdf 
  8853   Mon Jul 15 17:59:31 2013 gautamConfigurationendtable upgradeDAC at 1Y4- Power Spectrum -6.4kHz bandwidth

    

       
            
 DAC-6.4_kHz_BW_PSD.pdf 
  8857   Tue Jul 16 14:51:09 2013 gautamConfigurationendtable upgradeAI Board-D000186-Modified notches I tried shifting the notch frequencies
on the D000186-revision D board given to
me by Koji. The existing notches were at
 D000186_Frequency_Response.pdf 
  8873   Thu Jul 18 19:09:08 2013 gautamConfigurationendtable upgradeQPD Calibration for PZT CalibrationSummary 
I have been working on setting up
a QPD which can eventually be used to calibrate
 QPD-XCalib.pdfQPD-YCalib.pdfError_Function_Fitting.zip 
  8874   Thu Jul 18 20:20:52 2013 gautamConfigurationendtable upgradeFirst mirror glued to PZT and mounted in modified mounts 
 Yesterday,
I mounted the first PZT in one of the modified
 Piezo-mirror.jpg 
  8875   Thu Jul 18 21:12:58 2013 gautamConfigurationendtable upgradeAI Board-D000186-All channels modified 
 I carried some further modifications
and tests to the AI Board. Details and observations
 AI_Board_Output.jpg 
  8877   Thu Jul 18 23:34:40 2013 gautamConfigurationendtable upgradeCoarse adjustment of PZT axes orientation in mount I have
managed to orient the PZT in the mount such
that its axes are approximately aligned with
 PZT_out_waveform.jpg 
  8883   Fri Jul 19 22:51:40 2013 gautamConfigurationendtable upgradeSecond mirror glued to PZT and mounted  
I
 Piezo-mirror_2.JPG 
  8884   Fri Jul 19 23:35:31 2013 gautamConfigurationendtable upgradePreliminary Calibration of PZT I recalibrated
the QPD today as I had shifted its position
a little. I then identified the linear range
 QPD-XCalib.pdfQPD-YCalib.pdfPiezo_Yaw_Calib-in_QPD_linear_range-Pitch_tilt.pdfPiezo_Yaw_Calib-in_QPD_linear_range-Yaw_tilt.pdf 
  8900   Tue Jul 23 04:07:48 2013 gautamUpdateCDSExcitation points set up on c1scx 
 In
light of recent events and the decision to
  
  8909   Tue Jul 23 16:47:01 2013 gautamUpdateCDSExcitation points set up on c1scx I just compiled and installed the
model with the excitation points on c1scx
and then restarted framebuilder. The channels
  
  8911   Tue Jul 23 19:38:58 2013 gautamUpdateCDSCharacterisation of DAC at 1X9 
 I
just finished carrying out the same checks
  
  8912   Tue Jul 23 20:41:40 2013 gautamConfigurationendtable upgradeFull range calibration and installation of PZT-mounted mirrors Given
that the green beam is to be used as the
 M1_Pitch_calib.pdfM1_Yaw_calib.pdfM2_Pitch_calib.pdfM2_Yaw_calib.pdfPI_S330.20L.pdf 
  8932   Mon Jul 29 13:39:25 2013 gautamConfigurationendtable upgradePZT Driver Board-further changes 
 
I have
 D980323-C-modified.pdfD980323-C-modified-pg2.pdf 
  8935   Mon Jul 29 21:57:45 2013 gautamConfigurationendtable upgradeHardware installed at 1X9 The following hardware   
  8942   Tue Jul 30 19:40:47 2013 gautamConfigurationendtable upgradeDAC-PZT Driver Board Output Signal Chain Tested 
 [Alex, Gautam]
  
  8943   Tue Jul 30 19:44:05 2013 gautamConfigurationendtable upgradeSecond mirror glued to PZT and mounted  
 I have
  
  8949   Thu Aug 1 12:12:35 2013 gautamUpdateCDSNew model for endtable PZTsI have
made a new model for the endtable PZT servo,
and have put it in c1iscex. Model name is
 C1ASX_GDS_TP.png 
  8950   Thu Aug 1 13:09:17 2013 gautamUpdateCDSNew model for endtable PZTs-procedure 
 These
are roughly the steps I followed in setting
  
  8952   Thu Aug 1 15:28:44 2013 gautamUpdateCDSNew model for endtable PZTs-problem solved

    

       
            
  
  8956   Thu Aug 1 20:58:56 2013 gautamUpdateCDSNew model for endtable PZTs-MEDM Screens setup 
I
 MAIN_SCREEN.pdfMATRICES.pdfLOCKINS.pdfCONTROL_FILTERS.pdf 
  8957   Thu Aug 1 21:28:09 2013 gautamUpdateCDSSlow channels set-up in ALS The following
slow channels have been added and are now
  
  8966   Mon Aug 5 18:18:32 2013 gautamUpdateCDSChoosing LO Amplitudes and Frequencies In
order to decide what frequencies to dither
the 4 degrees of freedom (M1-pitch&yaw,
 GTR_Power_Spectrum.pdf 
  8967   Mon Aug 5 18:48:44 2013 gautamConfigurationendtable upgradeFull range calibration of PZT mounted mirrors for Y-endtable I
had prepared two more PZT mounted mirrors
for the Y-end some time back. These are:
 2-inch-CVI-Yawcalib.pdf2-inch-CVI-Pitchcalib.pdf1-inch-Laseroptik-Yawcalib.pdf1-inch-Laseroptik-Pitchcalib.pdf 
  8972   Tue Aug 6 16:36:51 2013 gautamUpdateCDSChoosing LO Amplitudes and Frequencies-revisedI redid
the power spectrum measurement for the X-arm
green transmission after aligning the arm
 powerSpec0806.pdf 
  8983   Wed Aug 7 23:40:49 2013 gautamUpdateCDSX-End Green ASS - A first update I
have done some preliminary testing of the
X-End Green ASS Servo. I will write a more
 time-series.pdf 
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