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ID Datedown Author Type Category Subject Text Attachments
  9843   Wed Apr 23 19:58:00 2014 manasaUpdateLSCTRY 60Hz noise[Steve, Manasa]
To find noise source
1. Swapped the power cable of the
  
  9842   Tue Apr 22 22:49:10 2014 ranaUpdateLSCTRY 60Hz noise 
 The detectors and electronics
on this table are not properly isolated.
  
  9841   Tue Apr 22 21:54:50 2014 manasaUpdateLSCTRY 60Hz noise

    

       
            
 60HzTRY.jpg 
  9840   Tue Apr 22 02:14:55 2014 ericqUpdateLSClock acquisition path for the CM servoIn an effort to familiarize myself with
the analog CM servo, I've begun to replicate
Koji and Den's work from the ELOG post that
  
  9839   Tue Apr 22 01:39:57 2014 JenneUpdateCDSFB unhappy again[Jenne, Q]
The frame builder (or something)
is unhappy again.  I know that we've
  
  9838   Tue Apr 22 01:11:42 2014 JenneUpdateLSCTRY 60Hz noise

    

       
            
 TRY_60Hz_noise_21Apr2014.pdf 
  9837   Mon Apr 21 23:33:57 2014 ranaSummaryGreen LockingHP 8591E reads low by 140 Hz out of 10 MHzTo
check the basolute frequency stability of
the old monochrome HP 8591E RF Spectrum analyzer
  
  9836   Mon Apr 21 22:53:16 2014 manasaUpdateLSCALS noise

    

       
            
 ALSX_FreeInLoop.jpgALSXY_inLoop.jpg 
  9835   Mon Apr 21 22:32:33 2014 ranaConfigurationGeneralnetgpibdata is working again nowNot working again. I tried the commands
in Koji's elog as well as the ones from my
notes, but the AG 4395 hooked up to the yellow
  
  9834   Mon Apr 21 10:14:00 2014 SteveUpdateVACMaglev controller serviced

    

       
            
 ourControllerBack560Hz.png 
  9833   Sun Apr 20 18:15:37 2014 ericqUpdateIOOCleaner CleanupCame in, and the PMC and MC needed aligning. 
PMC Trans .74->.83
I wasn't able to move the MC1&3
  
  9832   Fri Apr 18 20:17:17 2014 JenneUpdateLSCALS noisyLast night, as well as tonight, the ALS
seems not quite as robust as it was earlier
in the week.
 ALS_1kHzRMSnoise.pdfALS_oolNoise.pdf 
  9831   Fri Apr 18 19:05:17 2014 jamieUpdateCDSmx_stream not starting on c1ioo


   
        
            
  
  9830   Fri Apr 18 14:00:48 2014 rolfUpdateCDSmx_stream not starting on c1ioo 
 To fix open-mx connection to
c1ioo, had to restart the mx mapper on fb
  
  9829   Fri Apr 18 12:53:54 2014 JenneUpdateLSCAttempt at handing CARM to REFL11: Time seriesSome time series data from Wednesday
night. 
Here is the first time we've gotten
 CARMin1_POPDC_TRX_1000sec_TRXwas1ct.pnglockloss_CARMoscillating.pnglockloss_CARMoscillating_2.png 
  9828   Fri Apr 18 09:40:28 2014 SteveUpdateElectronicsit is a kick10 days of on-off glitching?  
It is a kick. The LSC is off, so it must
be the ALS
 theLifeofGlithes.pngglitchingEndsMC2.pngitisaKick.png 
  9827   Thu Apr 17 17:27:32 2014 ericqUpdateLSCSome reference PlotsJenne made some suggestions for some plots
that would be useful on our CARM offset reduction
adventures, so I made some with my MIST model. 
 carm2TRX.pdfcarmSignalLevels.pdf 
  9826   Thu Apr 17 17:22:32 2014 JenneUpdateCDSmx_stream not starting on c1ioo, locking okayJamie tells me that the 2 big consequences
of this are (a) we are not archiving any
data that is collected on the ioo machine,
  
  9825   Thu Apr 17 17:15:54 2014 jamieUpdateCDSmx_stream not starting on c1iooWhile
trying to get dolphin working on c1ioo,
the c1ioo
 c1ioo_no_mx_stream.png 
  9824   Thu Apr 17 16:59:45 2014 jamieUpdateCDSslightly more successful attempt to get Dolphin working on c1iooSo it turns out that the card that Rolf
had given me was not a Dolphin host adapter
after all.  He did have an actual host
  
  9823   Thu Apr 17 16:04:40 2014 JenneUpdateElectronicsHigh gain Trans PD electronics change 
 I have made the same modification
to the Yarm trans PD whitening board as was
  
  9822   Thu Apr 17 11:00:54 2014 jamieUpdateCDSfailed attempt to get Dolphin working on c1iooI've been trying to get c1ioo on the Dolphin
network, but have not yet been successful.
Background: if we can put the c1ioo
  
  9821   Thu Apr 17 01:18:34 2014 JenneUpdateLSCAttempt at handing CARM to REFL11[Jenne, Koji]
This evening, Koji and I followed
the procedure from last night (elog
  
  9820   Thu Apr 17 01:01:02 2014 JenneUpdateLSCLSC model modificationsLast night, EricQ and I were concerned
that we might need some CARM UGF servoing,
so I added a UGF servo block, copied from
  
  9819   Thu Apr 17 00:49:06 2014 JenneUpdateLSCCARM and DARM on IR signals, boosts engagedI looked at 2 of the locklosses from last
night, (1:19am and 1:27am), and saw that
for both, the DARM loop started to oscillate
 Lockloss_DARMgainTooHigh_119am.pngLockloss_DARMgainTooHigh_127am.pngSmoothCARMandDARMtransitions_LSCboosts.png 
  9818   Wed Apr 16 02:29:30 2014 ericqUpdateLSCCARM and DARM on IR signals, boosts engaged As Jenne mentioned, we took OLTF
transfer functions, and determined that we
had more than enough phase margin to switch
 carmOLTF.pdfboostPlot.png 
  9817   Wed Apr 16 02:11:40 2014 JenneUpdateLSCCARM and DARM on IR signals, boosts engaged[Jenne, EricQ]
Tonight, we transitioned CARM
and DARM to IR signals, took loop transfer
  
  9816   Wed Apr 16 01:51:16 2014 JenneUpdateLSCScripts written for ALS acquisition, CARM and DARM transitions[Jenne, EricQ]
This evening, as part of locking
activities, we threw together some handy
  
  9815   Tue Apr 15 16:21:18 2014 KojiUpdateIOOMC2 LSC offset was set to be -5000Yesterday, MC2 alignment was slipping all
day. Even when the WFS was off (i.e. there
wa sno actuation), I had continual misalignment
  
  9814   Tue Apr 15 13:24:42 2014 SteveUpdatePSLlaser turned onThe 2W Innolight was off for 4 hours.  laserOff4hrs.pnglaserShutsDown.png 
  9813   Tue Apr 15 09:32:19 2014 GabrieleUpdateLSCMICH gets noisy as CARM or DARM offset reducedI guess this is normal. DARM has (almost)
the same effect of MICH on the corner interferometer
signals, just increased in amplitude by the
  
  9812   Tue Apr 15 08:55:57 2014 KojiUpdateLSCAnalog phasing of REFL11 and REFL55I have never used such a long cable for
RF phase adjustment. The speed of the signal
is 2e8 m/s and the frequency is ~10e6 Hz.
  
  9811   Tue Apr 15 02:26:45 2014 ericqUpdateLSCAnalog phasing of REFL11 and REFL55For future reference:
As we were poking around with the
common mode servo in an FPMI configuration,
  
  9810   Tue Apr 15 02:19:54 2014 JenneUpdateLSCAnalog phasing of REFL11 and REFL55[Jenne, EricQ]
I told Koji that I wanted to play
with the common mode servo this evening,
  
  9809   Mon Apr 14 19:02:09 2014 JenneUpdateLSCMICH gets noisy as CARM or DARM offset reducedThis afternoon, I was toying around with
reducing either the CARM or DARM offsets
(so, put in a CARM offset, leave DARM zero,
 MICH_fuzzy_when_offsets_small_longerData.pngTRX_TRY_100cts.pngMICH_fuzzy_when_offsets_small.png 
  9808   Mon Apr 14 17:59:05 2014 JenneConfigurationPEMNew T-240 cableAs payment for borrowing 2 of our seismometers,
Zach has made us a new Trillium cable, to
go from the granite station to the readout
  
  9807   Mon Apr 14 13:20:45 2014 JenneUpdateLSCIFO Configure screen updated, CARM / DARM scripts addedI have compressed the IFO Configure screen. 
All PRMI things (sideband lock and carrier
lock) are in the PRMI button, all arm things
  
  9806   Mon Apr 14 11:19:55 2014 JenneUpdateLSCMC WFS found offI'm not sure why, but the WFS were turned
off when I came in this morning.  The
MC was not staying locked, and even during
  
  9805   Sun Apr 13 13:03:34 2014 ranaUpdateLSC That's a very smooth DARM transition -
its good news that the dALS signals don't
have a huge offset w.r.t the real error signal.
  
  9804   Fri Apr 11 18:55:28 2014 manasaUpdateLSCarm length measurementsArm lengths were measured
using ALS
 Xarm.pngYarm.png40mCavLength.zip 
  9803   Fri Apr 11 16:04:31 2014 KojiUpdateLSCcongratulationIt's
just one of the stepping stones, but not
yet a mile stone.
  
  9802   Fri Apr 11 14:57:53 2014 steveUpdateLSCcongratulation 
 
 whenSheisHappy3h.pngmc4hArms3hrs.png 
  9801   Fri Apr 11 12:32:33 2014 ericqUpdateLSCCARM and DARM both on IR signals!!!!!!!!!

    

       
            
  
  9800   Fri Apr 11 12:21:27 2014 KojiUpdateLSCCARM and DARM both on IR signals!!!!!!!!!About the ADC range,
According to the elogs, DARM = AS55Q/400.
So in the current level, the error has +/-40cntpp
  
  9799   Fri Apr 11 11:58:24 2014 JenneUpdateLSCCARM and DARM both on IR signals!!!!!!!!! A few time series from last night's
data. 
300 seconds, starting from 1081240100,
 DARM_IN1_getsSmaller.pngDARM_CARM_TRX_TRY.pngCARMtransition_DARMtransition.pngDARMin_DARMout.pngCARM_DARM_in_out.png 
  9798   Fri Apr 11 10:30:48 2014 jamieUpdateLSCCARM and DARM both on IR signals!!!!!!!!!


   
        
            
  
  9797   Fri Apr 11 02:09:31 2014 JenneUpdateLSCCARM and DARM both on IR signals!!!!!!!!![EricQ, Jenne]
A few more details on our work for
the evening, of 
 IRlocks.pdf 
  9796   Fri Apr 11 01:02:07 2014 JenneUpdateLSCCARM and DARM both on IR signals!!!!!!!!![EricQ, Jenne]
We're still working, but I'm really
excited, so here's our news: 
 onlyIRspectra.pdf 
  9795   Thu Apr 10 16:09:29 2014 SteveUpdateVACRGA scan at 75% pumping speed

    

       
            
 520HzpumpingSpeed.png 
  9794   Thu Apr 10 10:52:15 2014 manasaSummaryIOOMC2_TRANS path in WFS servo

    

       
            
  
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