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ID Date Author Typeup Category Subject Text Attachments
  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


   
        
            
  
  1501   Mon Apr 20 18:36:37 2009 ranaUpdateCamerasMafalda may need an updateSadly, the sensoray crap doesn't seem to build
on CentOS. I too would prefer a homogenous
solution, 
  
  1506   Tue Apr 21 18:18:27 2009 steveUpdateVACmaglev failedOur Osaka TG360MB maglev failed with CSB
error message. This means that the dry emergency
landing bearing has to be replaced.
 nopumping10h.jpg 
  1508   Thu Apr 23 13:55:43 2009 josephb, peterUpdateComputersRCG example We successfully compiled and installed
the Real time Code Generator "Hello
World" example (which is a skeleton
  
  1509   Thu Apr 23 16:27:24 2009 YoichiUpdateLockingLocking with the cryo-pumpThe last night, the IFO was unstabler than
usual and the locking script often failed
before reaching the power up stage.
  
  1511   Thu Apr 23 16:38:33 2009 steveUpdateVACvac valve relay box is shortingBen and I found this vacuum valve relay
box intermittently shorthing yesterday.
It effects V4, V5, VA6 and VM1........
 vacrel.png 
  1512   Thu Apr 23 18:09:11 2009 YoichiUpdateEnvironmentEffect of cryopumpThe attached is the trend plot of the MC1
accelerometer for 3 days.
It is evident that the seismic level increased
 SeisTrend.pdf 
  1514   Fri Apr 24 03:57:30 2009 YoichiUpdateLockingDARM demod phaseTonight, I was able to go up to arm power
= 40 by tweaking the DARM demodulation phase.
I think the DARM loop became unstable because
  
  1515   Fri Apr 24 04:38:49 2009 YoichiUpdateLockingDARM demod phase[quote]Tonight, I was able to go up to arm
power = 40 by tweaking the DARM demodulation
phase.
  
  1516   Fri Apr 24 11:34:32 2009 robUpdateLockingDARM demod phase[quote][quote]Tonight, I was able to go up
to arm power = 40 by tweaking the DARM demodulation
phase.
 darm_phase_rotate.png 
  1519   Fri Apr 24 17:26:57 2009 YoichiUpdateLockingDARM demod phase[quote]
There's actually code in place in the LSC
to dynamically adjust the demod phase for
  
  1522   Sat Apr 25 03:27:34 2009 YoichiUpdateLockingLocking statusYoichi, Peter,

We are working on the final step of the lock
  
  1523   Sun Apr 26 02:13:18 2009 YoichiUpdateLockingTwo more successes of RF CARM handoffTonight, the RF CARM hand off (mostly) succeeded
twice.
But still, the IFO lost lock when I reduced
  
  1526   Tue Apr 28 04:30:16 2009 YoichiUpdateLockingRF full lockYoichi, Peter

I believe we have succeeded in the full lock
 Sweep1.png 
  1531   Wed Apr 29 04:03:51 2009 YoichiUpdateLockingCARM RF changed to REFL_2IYoichi, Peter

As Rob suggested, the optimal demodulation
  
  1533   Wed Apr 29 15:56:43 2009 robUpdateLockingeffect of SRCL detune on ARM powers in a CARM sweepWith no DARM offset, sweeping CARM shows
an asymmetry between the state where we lock
to a DARM spring and the state with a DARM
 CARMsweep_DARMspringnospring.png 
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