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ID Date Author Type Category Subjectup Text Attachments
  8964   Mon Aug 5 11:53:45 2013 EvanUpdateISSCTN Servo - Explicit Requirement and Proposed ServoI goofed on the transfer function requirement
by not giving you the plant transfer function,
which looks to be about 0.014 V/V,  independent
  
  8759   Wed Jun 26 21:52:55 2013 CharlesUpdateISSCTN Servo Prototype CharacterizationFollowing the circuit
design in elog 8748, I constructed
a prototype for the servo portion of the
 TF_Mag-CTNServo_v2_Prototype.pngTF_Mag-CTNServo_v2_Prototype_AD829s.png 
  8771   Thu Jun 27 18:24:25 2013 CharlesUpdateISSCTN Servo Prototype Characterization - Done CorrectlyAs I showed in [elog
8759], measuring the transfer function
of my prototype servo was difficult due to
 TF-CTNServo_v2_Prototype-Individual_Stages.pngTF-CTNServo_v2_Prototype-Calc_vs_Meas.pngTF-CTNServo_v2_Prototype-Individual_Stages.figTF-CTNServo_v2_Prototype-Calc_vs_Meas.fig 
  14594   Fri May 3 15:40:33 2019 gautamUpdateGeneralCVI 2" beamsplitters deliveredFour new 2" CVI 50/50 beamsplitters
(2 for p-pol and 2 for s-pol) were delivered.
They have been stored in the optics cabinet,
  
  9006   Tue Aug 13 13:30:41 2013 Alex ColeConfigurationElectronicsCable Routing I routed cables (RG405 SMA-SMA) from
several demodulator boards in rack 1Y2 to
the RF Switch in rack 1Y1 using the overhead
 photo_(6).JPG 
  3520   Fri Sep 3 11:03:41 2010 AlbertoFrogsElectronicsCable cutting toolsI found this very interesting German maker
of cool cable cutting tools. It's called
Jokari.
  
  3522   Fri Sep 3 13:04:30 2010 KojiFrogsElectronicsCable cutting toolsYeah, this looks nice.
And I also like to have something
I have attached. This is "HOZAN P-90",
 P90.jpg 
  4346   Wed Feb 23 16:56:17 2011 Larisa ThorneUpdateVIDEOCable laying...continuedHaving finished labeling the existing cables
to match their new names, we (Steve, Kiwamu
and Larisa) moved on to start laying new
  
  4462   Wed Mar 30 17:01:08 2011 Larisa ThorneUpdateVIDEOCable laying...continued[Steve, Suresh, Kiwamu, Larisa]
 
Only the PRM/BS cable was laid today.
  
  4474   Thu Mar 31 08:31:44 2011 SureshUpdateVIDEOCable laying...continuedThe video work has crossed a milestone.    
Kiwamu and Steve have shifted the
three quads from the control room to
 P1070489.JPGP1070494.JPG 
  4492   Wed Apr 6 16:02:07 2011 Larisa ThorneUpdateElectronicsCable laying...continued[Steve, Kiwamu, Larisa]
 
Having finished laying new cable
  
  16805   Fri Apr 22 12:15:08 2022 AnchalUpdateBHDCable post installationIf someone gets time, let's put in
all the cable posts and clean up our cable
routing on the tables.
  
  16810   Mon Apr 25 16:57:57 2022 AnchalUpdateBHDCable post installation[Anchal, Tega, JC]

We installed cable posts in ITMY,
BS, and ITMX chambers for all the new suspensions.
  
  8676   Wed Jun 5 10:46:43 2013 GautamUpdateGeneralCable re-routing at 1Y4 There were 4 cables running over
the front side of rack 1Y4 such that the
front door could not be closed. I re-routed
 before.JPGafter.JPG 
  3369   Thu Aug 5 17:59:23 2010 KojiUpdatePSLCable removal from the control room[Alberto, Kiwamu, and Koji]
We removed the BNC cables from the
control room. 
 IMG_2684.jpg 
  16812   Mon Apr 25 18:00:03 2022 Ian MacMillanUpdateUpgradeCable supports updateI have designed new cable supports for
the new ribbon cables running up the side
of the tables in the vacuum chambers. 
 Chamber_Leg_Ribbon_Cable_Attachments.pdf 
  4739   Wed May 18 16:52:23 2011 SureshUpdateRF SystemCables for AS11 PD are in place[Larisa, Suresh]
All the cables needed for the AS11
PD are in place... the heliax cable runs
 1Y2_Rack_Layout_short-term.png 
  3342   Sat Jul 31 17:37:36 2010 josephbUpdateCDSCables needed for CDS testLast Thursday, Kiwamu and I went through
the cabling necessary for a full damping
test of the vertex optics controled by the
  
  3848   Tue Nov 2 16:49:02 2010 JenneConfigurationCamerasCabling on the PSL tableDear whomever setup the camera on the SW
corner of the PSL table,
It would be handy if, even for temporary
  
  5583   Fri Sep 30 06:25:20 2011 kiwamuUpdateLSCCalbiration of BS, ITMs and PRM actuatorsThe AC responses
of the BS, ITMs and PRM actuators have been
 actuators.png 
  4347   Thu Feb 24 00:54:33 2011 KevinUpdateElectronicsCalculated Dark Noise for POX and POY[Kevin, Rana, Koji]
I calculated the dark noise of POX
and POY due to Johnson noise and voltage
  
  10374   Wed Aug 13 10:50:04 2014 AndresUpdateIMCCalculation for the input mode cleaner  Calculation for the input mode
cleaner
I have been working on the
calculation for the input mode cleaner. I
 ModeCleanerSetup0.PNGalaModeModeCleanersolution.png 
  10375   Wed Aug 13 13:08:24 2014 ranaUpdateIMCCalculation for the input mode cleanerCan you please give us some more details
on how this design was decided upon? What
were the design considerations?
  
  10379   Wed Aug 13 22:01:57 2014 ranaUpdateIMCCalculation for the input mode cleanerNic,
Andres, and I discussed some more about the
MC WFS project today. We want
  
  10384   Thu Aug 14 15:10:47 2014 AndresUpdateIMCCalculation for the input mode cleaner

    

       
            
 SolutionForTheModeCleanerSetup00.pngSolutionForTheModeCleanerSetup11.pngPossibleSetupForModeCleaner.PNGalaModeSolution.zip 
  4471   Wed Mar 30 21:43:31 2011 Aidan, KiwamuSummaryGreen LockingCalculation of the green contrast on the RF PDSkip to final thought ...
Kiwamu and I have set about measuring
the contrast of the signal on the RF PD.
  
  7695   Fri Nov 9 18:28:23 2012 CharlesUpdateSummary PagesCalendarThe calendar tab now displays calendars
with weeks that run from Sunday to Saturday
(as opposed to Monday to Sunday). However,
  
  1100   Wed Oct 29 12:54:28 2008 JenneUpdatePEMCalibrated Guralp Noise compared to average ground motionHere is a calibrated noise plot of the Guralp
seismometer box.  This is the same noise
measured on Friday, measured at TP3 (just
 GuralpVert1Noise_mPERs_Ranger.png 
  694   Fri Jul 18 16:57:37 2008 JenneUpdateIOOCalibrated MC_FI have calibrated MC_F.  The conversion factor
is 137.49 MHz/count.
 MC_Fcalib.png20080717MC_F-MC_I.pdf 
  13969   Fri Jun 15 00:53:21 2018 gautamUpdateLSCCalibrated MICH spectrumUsing the numbers from the sensing measurement,
I calibrated the measured in-loop MICH spectrum
from Tuesday night into free-running displacement
 C1NB_disp_40m_MICH_NB_2018-06-14.pdf 
  6858   Fri Jun 22 20:58:15 2012 JenneUpdateGreen LockingCalibrated POX spectra - Xarm stabilized by ALS[Yuta, Jenne, Koji]
We stabilized the Xarm using the
ALS and took a spectrum of POX as our out
 POX11_I_ERR_calib_residualCavityMotion_better.pdf 
  9630   Wed Feb 12 19:47:40 2014 JenneUpdateLSCCalibrated REFL signalsI calibrated the REFL signals to meters
from counts.  The I-phase signals all
line up very nicely, but the Q-phase signals
 CalibratedUsingPRMdrive.pdf 
  9631   Wed Feb 12 20:30:41 2014 KojiUpdateLSCCalibrated REFL signalsWe usually want to remove PRCL from the
Q quadrature for each PD. 
Therefore, you are not supposed to
  
  10298   Wed Jul 30 15:33:48 2014 AkhilSummaryGeneralCalibrated Thermal Actuator TFs The goal of the measurements we made
( my previous 3 elogs) was to characterize
the laser frequency thermal actuator that
 Y_Arm_TA_TF.pdfX_Arm_TA_TF.pdfY_Arm_TA_with_fit.pdfX_Arm_TA_with_fit.pdf 
  1390   Wed Mar 11 22:57:48 2009 YoichiUpdateLockingCalibrated XARM error signal spectrumI did a rough calibration of the XARM error
spectrum.
See the attached calibrated spectrum.
 XarmErrorSpeCalibrated.pdf 
  1402   Fri Mar 13 22:07:14 2009 YoichiUpdateLockingCalibrated XARM error signal spectrumOf course I made a mistake.
I put a pole at 1525Hz whereas it should
have been a zero.
 XarmErrorSpeCalibrated.pdf 
  9105   Wed Sep 4 20:47:15 2013 manasaUpdateLSCCalibrated in-loop MICH noiseTo estimate in-loop MICH noise:
(a) Calibrate MICH_ERR:
1. Lock the arms for IR using POX11
 MICH_noise.pdf 
  4214   Thu Jan 27 21:10:47 2011 OsamuUpdate40m UpgradingCalibrated noise of greenI calibrated noise spectrum of green lock.
1. Measurement of conversion factor
of ADC input from V to ct:
 20110127_Calibrated_grrennoise.pdf20110127_Calibrated_grrennoise.jpg20110127_TF_ETMXSUSEXC_to_PZTOUT.pdf 
  850   Tue Aug 19 10:36:34 2008 SharonUpdate Calibrating accelerometersI took apart the accelerometers near MC1 and
MC2.
The 2 sets of 3 accelerometers are now covered
  
  1139   Mon Nov 17 11:01:15 2008 AlbertoHowToElectronicsCalibrating the Frequency Standard of the MarconiI locked the [COLOR=purple][I]SRS Rubidium
Frequency Standard FS275[/I][/COLOR] to the
the 1pps from the GPS. The specs from the
 2023ASeriesOperatingManual.pdfSRS_FS275_Rubidium_Frequency_Standard.pdf 
  10286   Tue Jul 29 18:00:20 2014 AkhilUpdateLSCCalibration of ETMX and ETMY actuatorsThe ultimate goal of characterizing the
temperature actuator turned to be fruitful
in obtaining the calibration values for ETMX
 PZT_ETMX_TF.pngPZT_ETMY_TF.pngPZT_ITMX_TF.pngPZT_ITMY_TF.png 
  8242   Wed Mar 6 18:14:33 2013 ManasaSummaryLSCCalibration of BS, ITMX and ITMY actuators[Yuta, Manasa]

Measured
 MICHerrCalibration.pngMICHerrCalibration.pngMICHOLTF.pngactcalibITMBS.png 
  11841   Thu Dec 3 03:01:07 2015 gautamUpdateLSCCalibration of C1CAL [ericq, gautam]

While trying to resolve the strange
SRCL loop shape seen yesterday (which has
 2015-12-C1CAL_Calibration.pdf 
  6402   Mon Mar 12 22:14:56 2012 SureshUpdateRF SystemCalibration of Demod Board Efficiency. I have completed the calibration of the
demod board efficiencies.  Here is the
schematic of the set-up.
 Calibration_Schematic.pngDemod_calib.pngDemod_calib.txtDemod_calib.xlsx 
  5172   Wed Aug 10 14:27:39 2011 Ishwita , ManuelUpdatePEMCalibration of Guralp and STS2ADC:
216counts = 4V Hence, calibration
of ADC is 214counts/V.
  
  5174   Wed Aug 10 14:35:39 2011 ranaUpdatePEMCalibration of Guralp and STS2I'm pretty sure that don't have any ADC's
with this gain. It should be +/- 10V for
16 bits. 
  
  5175   Wed Aug 10 15:17:39 2011 Ishwita, ManuelUpdatePEMCalibration of Guralp and STS2

    
        
  
  5185   Thu Aug 11 09:39:25 2011 Ishwita, ManuelUpdatePEMCalibration of Guralp and STS2

    
        
 pw_gurs_aug11.png 
  5187   Thu Aug 11 11:50:56 2011 Manuel , IshwitaUpdatePEMCalibration of Guralp and STS2 
 We just checked with a function
generator the calibration of the ADC. We
  
  5196   Thu Aug 11 16:15:59 2011 Ishwita, ManuelUpdatePEMCalibration of Guralp and STS2 
Finally, we have found the correct
calibration of Guralp and STS2 seismometers.
  
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