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  40m Log, Page 15 of 339  Not logged in ELOG logo
ID Date Author Typedown Category Subject Text Attachments
  1426   Wed Mar 25 04:18:28 2009 YoichiUpdateLockingTuesday LockingAfter the new PO_DC PD was installed, I tweaked
several gains to make the locking scripts
work right.
 AO-Loop-p9.png 
  1427   Wed Mar 25 09:55:45 2009 steveUpdateIOOglitching sensors of MCSUS-MC1_SENSOR_SIDE and SUS-MC2_SENSOR_UL
are glitching
Yesterday's 4.8mag earthquake at
 glitchesofMC.jpg 
  1428   Wed Mar 25 17:22:58 2009 YoichiUpdateIOOMC lock without FSSI made 40k:4k passive filter in a POMONA box
and connected it to IN1 (not TEST IN1) of
the FSS box.
 MC-loop-gain.png 
  1429   Wed Mar 25 20:41:43 2009 JenneUpdateIOOMode Cleaner Servo Board Transfer Functions (to be updated)When all things fail (netgpibdata.py is
giving me weird data.  When I plot the
data it has saved from the 4395A, it's some
 MCwithBoxsmall.JPGMCnoBoxsmall.JPGPomonaBoxforMCsmall.JPG 
  1430   Thu Mar 26 00:45:24 2009 JenneUpdateIOOMode Cleaner Servo Board Transfer Functions (to be updated)


   
        
            
 MCwithandwithoutfilter25Mar2009.pngPomonaBoxMCfilter25Mar2009.pngMCServoData25Mar2009.tar.gz 
  1431   Thu Mar 26 04:01:24 2009 YoichiUpdatePSLFSS Open Loop GainYoichi, Peter, Jenne

Attached is the open loop transfer function
 OpenLoopTF.png 
  1432   Thu Mar 26 04:09:38 2009 YoichiUpdateIOOSingle X arm lock spectra with different MC lock schemesThe attached plots show MC_F, FSS_FAST_F and
XARM IN/OUT spectra with different MC locking
modes.
 XarmSpectra.pdfXarmSpectraZoom.pdf 
  1433   Thu Mar 26 04:27:26 2009 YoichiUpdateLocking3.8kHz peak as a function of the arm powerDuring the power ramp-up, I actuated CARM
using ETMs and measured the transfer functions
to the PO_DC at several arm powers.
 CARM-PODC.pdf 
  1434   Thu Mar 26 09:08:18 2009 KakeruUpdateoplevsarm cavity oplev calibrationI uploaded a document about my oplev calibration.
/cvs/cds/caltech/users/kakeru/oplev_calibration/oplev.pdf
  
  1436   Fri Mar 27 02:50:54 2009 YoichiUpdateLockingDD demodulation phase suspiciousI noticed that the gain of PD6_Q (before the
phase rotation) was 0 whereas PD6_I gain
was 15.
  
  1437   Fri Mar 27 15:05:42 2009 YoichiUpdateIOOMC glitch investigationAttached plots are the result of the
MC1 trend measurement.
See the
attachment #1. The first two plots show the
 MC1_Drift.pdfMC2_Drift.pdf 
  1438   Fri Mar 27 17:52:16 2009 YoichiUpdateIOOMC glitch investigationPer Rob's suggestion, I put the probes
across the output resistors of the bias current
buffers instead of measuring the output voltage
  
  1439   Sun Mar 29 13:44:27 2009 steveUpdateSUSETMY sus damping restoredETMY sus damping was found to be tripped.
It was retored.
All fluorecent light were turned
  
  1440   Sun Mar 29 17:54:41 2009 YoichiUpdateSUSMC1 drift investigation continuedThe attached plots show the trend of the MC
OSEM signals along with the voltages across
the output resistors of the bias current
 Drift1.pdf 
  1441   Mon Mar 30 09:07:22 2009 ranaUpdateSUSMC1 drift investigation continued[COLOR=chocolate]Maybe we can temporarily
just disconnect the bias and just use the
SUS sliders for bias if there's enough range?[/COLOR]
  
  1444   Mon Mar 30 13:29:40 2009 YoichiUpdateSUSMC1 drift investigation continued[quote][COLOR=chocolate]Maybe we can temporarily
just disconnect the bias and just use the
SUS sliders for bias if there's enough range?[/COLOR][/quote]
  
  1445   Mon Mar 30 15:51:27 2009 steveUpdateElectronicsHP4291A left the lab to be repairedEric Gustafson is handling the old HP4291A
rehabilitation. Tarac picked both units up
today.
  
  1447   Tue Mar 31 09:42:32 2009 steveUpdatePEMETMY sus damping restored againThe Caltech gasoline storage tank is being
upgraded.
They are jack hammering and digging
  
  1448   Wed Apr 1 10:22:13 2009 steveUpdateVACRGA logging is workingThanks to Joe B who made the SRS RGA working
with linux
Last data file logged at 2008 Oct
 rga-090401.png 
  1449   Wed Apr 1 15:47:48 2009 YoichiUpdateLocking3.8kHz peak looks like a real optical response of the interferometerYoichi, Peter

To see where the 3.8kHz peak comes from,
 CARM-ETM-EXC.pngAOpath-TFs.png 
  1450   Wed Apr 1 16:14:36 2009 YoichiUpdateLocking3.8kHz peak does not change with SRC offsetYoichi, Peter

We suspected that maybe the 3.8kHz peak is
  
  1452   Fri Apr 3 10:01:50 2009 steveUpdateVACrgascan with temp plotRga scan of day 231 since pumpdown pd66-m-d231
m stands for maglev pumping speed,
vacuum normal condition of valves,
 pd66tempow.jpgrga-090403scan.png 
  1454   Fri Apr 3 17:20:05 2009 YoichiUpdateLockingThe 3.8kHz peak seems like the DARM RSE (not 100% sure though)Yoichi, Kentaro,

Last night, we took several measurements
 AO-TF-DARM-OFFSET.pngAO-TF-DARM-DEMOD-PHASE.pngAO-TF-MICH-OFFSET.pngPOX_1I.pngDARM-Loop.pdf 
  1455   Mon Apr 6 19:09:15 2009 JenneUpdatePEMOld Guralp is hooked back up to the ADCOld Guralp is hooked back up, the new one
is sitting next to it, disconnected for now.
  
  1456   Mon Apr 6 21:50:43 2009 ranaUpdateLSCArm Locking via pushing MC2Inspired by our 'No Refcav' scheme here, I
was inspired to re-explore the idea of locking
the
 mc2-xarm.pdfUntitled.pngnohands.pdf 
  1458   Wed Apr 8 02:47:42 2009 YoichiUpdateLockingLocking statusThis is a summary of activities in the last
few nights, although there is not much progress.
 CARM_TFs.pdfDARM_TFs.pdfDARM-CARM-Coupling.pdf 
  1462   Thu Apr 9 11:27:19 2009 steveUpdateVACvac gauge reading problemCold cathode gauge CC4  is reading
normal.
CC1 is glitching, it is probably
 vacgflsec.jpgvacgflmin.jpg 
  1463   Thu Apr 9 12:23:49 2009 peteUpdateLockingtuning ETM common modePete, Yoichi
Last night, we put the IFO in FP
Michelson configuration.  We took transfer
 FPMI-DARM-CARM-ETM-fineScan.pdf 
  1467   Fri Apr 10 01:24:08 2009 ranaUpdateComputersallegra update (sort of)I
tried to play an .avi file on allegra. In
a normal universe this would be easy, but
  
  1469   Fri Apr 10 04:54:24 2009 YoichiUpdateLockingREFL_DC for CARMSuggested by Rob and Rana's simulation works,
I tried to use REFL_DC for the CARM error
signal.
 AO-loop-gain-CARM-REFL_DC.png 
  1470   Fri Apr 10 18:11:18 2009 JenneUpdatePSLISS has a bad cable?[Rob, Jenne]
I noticed that the ISS Mean Value
and CS Saturation were both 
  
  1471   Fri Apr 10 19:09:48 2009 JenneUpdatePSLPMC LO CalibrationI measured the RF LO output level from the
PMC's LO board which goes directly into the
LO input on the PMC Servo board.  This goes
 RFSliderAdjustCalib.pngRFSliderAdjustCalibWithOsc.png 
  1472   Fri Apr 10 19:10:53 2009 JenneUpdateGeneralXarm locked?I don't know who left the X arm locked,
but I just ran the Align Full IFO script,
so everything is good in case Yoichi/someone
  
  1473   Sat Apr 11 00:45:41 2009 YoichiUpdatePSLPMC LO Calibration[quote]
I then changed the RF Output Adjust slider
in increments of 0.5, and measured the peak-to-peak
  
  1475   Sun Apr 12 19:27:20 2009 ranaUpdatePSLPMC LO Calibration[quote]
3.8Vpp is about 16dBm. 
The mixer for the PMC demodulator is level
  
  1477   Mon Apr 13 08:59:57 2009 steveUpdatePSLmixers on order[quote][quote]
I then changed the RF Output Adjust slider
in increments of 0.5, and measured the peak-to-peak
  
  1478   Mon Apr 13 17:55:37 2009 JenneUpdatePSLPMC LO Mon CalibrationI have calibrated the PMC LO Mon (C1:PSL-PMC_LODET)
on the PMC's EPICS screen, by inputting different
RF LO levels into the LO input of the PMC
 LOmonCalibration.png 
  1480   Tue Apr 14 02:59:02 2009 YoichiUpdateLockingPower up until 26Yoichi, Peter,

With careful adjustments of the common mode
  
  1482   Tue Apr 14 17:20:36 2009 YoichiUpdateComputer Scripts / ProgramsParallel OptickleI wrote a parallel version of tickle() function
for Optickle.
The attached ptickle.m, which provides ptickle()
 ptickle.m 
  1484   Wed Apr 15 02:20:46 2009 rana, yoichiUpdateDMFDMF now working copyWe found that DMF/ was not an SVN working
copy, so I wiped out the SVN version, imported
the on-disk copy, moved it to DMFold/ and
  
  1485   Wed Apr 15 03:52:27 2009 ranaUpdateDMFNDS client32 updated for DMF Since   
  1487   Wed Apr 15 17:11:37 2009 JenneUpdatePSLEdited c1psl.db to calibrate PMC's LO mon


Following the method in Peter's
Elog, 

I edited c1psl.db to include
the following: 


grecord(calc, "C1:PSL-PMC_LOCALC")
{
  
  1488   Thu Apr 16 11:17:56 2009 JenneUpdatePSLEdited c1psl.db to calibrate PMC's LO mon


   
        
            
  
  1489   Thu Apr 16 16:26:57 2009 peteUpdateLockingWed. night lockingyoichi, pete

We installed the watchLockLoss script in
  
  1490   Thu Apr 16 16:37:42 2009 AlbertoUpdateAuxiliary lockingthe zipper It takes 18 months to double the computational
power of microprocessors but it took man
thousands of years to invent the zipper.
 19_3f_Current_40m_plots_SUCCESS.pdf 
  1491   Thu Apr 16 17:19:44 2009 AlbertoUpdateAuxiliary lockingthe zipper


   
        
            
 04_3f_Current_40m_plots.pdf11_3f_40mUpgrade_plots.pdf 
  1493   Fri Apr 17 11:05:22 2009 YoichiUpdateLockingThursday night locking statusThe last night, it was sort of robust to go
up until arm power = 26.
The REFL_DC gain seems to change a lot around
  
  1495   Sun Apr 19 03:34:05 2009 YoichiUpdateLockingSaturday night lockTonight I was able to go up to arm power =
33, by mainly tweaking the DARM gain. A small
progress.
  
  1497   Sun Apr 19 11:51:05 2009 josephbUpdateCamerasMafalda may need an updateI tried installing libusb-dev on mafalda
in order to try getting the usb frame grabber
to work on it, but could not as it could
  
  1499   Mon Apr 20 11:57:27 2009 robUpdateCamerasMafalda may need an update


   
        
            
  
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