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ID Date Author Type Category Subject Text Attachments
  1534   Thu Apr 30 05:49:06 2009 YoichiUpdateLocking166MHz LO phase changedIn order to optimize the REFL_2I demod phase,
I changed the delay line setting for the
166MHz LO.
  
  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 
  1532   Wed Apr 29 10:20:14 2009 steveHowToVACcryo pump interlock rule is waved


   
        
            
  
  1531   Wed Apr 29 04:03:51 2009 YoichiUpdateLockingCARM RF changed to REFL_2IYoichi, Peter

As Rob suggested, the optimal demodulation
  
  1530   Tue Apr 28 17:51:13 2009 robHowToLockingsetting the RF CARM demod phase


   
        
            
 XARM_phases_POX.pdfCARM_phases_POX.pdf 
  1529   Tue Apr 28 16:36:24 2009 robHowToLockingsetting the RF CARM demod phaseTo set the demod phase for RF CARM, sensed
at REFL2 (REFL 166I), it suffices to set
the demod phase for REFL2 to be the optimal
 CARM_phases_REFL.pdfSRCL_phases_REFL.pdf 
  1528   Tue Apr 28 12:55:57 2009 CarynDAQPEMUnplugged Guralp channelsFor the purpose of testing out the temperature
sensors, I stole the PEM-SEIS_MC1X,Y,Z channels.
I unplugged Guralp NS1b, Guralp Vert1b,
  
  1527   Tue Apr 28 09:27:32 2009 steveConfigurationVACcryopump deserves some creditCongratulation Yoichi and Peter for full
rf locking at night. Let's remember that
the cryopump was shaking the hole vac envelope
 cryfl.jpgseiscryofl.jpg 
  1526   Tue Apr 28 04:30:16 2009 YoichiUpdateLockingRF full lockYoichi, Peter

I believe we have succeeded in the full lock
 Sweep1.png 
  1525   Tue Apr 28 01:48:45 2009 peteConfigurationVACVC1 openAt about 1am or so Yoichi and I opened
VC1.  CC1 had fallen to about 5e-5 torr.
  
  1524   Mon Apr 27 18:31:44 2009 steveConfigurationVACVC1 closedCC1 5e-7 Torr,  VC1 closed at 18:25, 
IFO is not pumped, RGA is in bg-mode
 
  
  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
  
  1522   Sat Apr 25 03:27:34 2009 YoichiUpdateLockingLocking statusYoichi, Peter,

We are working on the final step of the lock
  
  1521   Sat Apr 25 02:54:25 2009 YoichiConfigurationVACReflector for the cryopump temperature monitor changed[quote]The temperature of the cryopump head
is monitored by a photo switch looking at
an aluminum foil reflector attached to the
  
  1520   Sat Apr 25 00:45:31 2009 YoichiConfigurationVACReflector for the cryopump temperature monitor changedThe temperature of the cryopump head is monitored
by a photo switch looking at an aluminum
foil reflector attached to the needle of
  
  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
  
  1518   Fri Apr 24 16:24:25 2009 robOmnistructureVACPaschenIn response to Steve's elog entry, and
for 40m posterity, I provide the Paschen
Curve.
 paschens.pngpaschenplot.m 
  1517   Fri Apr 24 16:02:31 2009 steveHowToVACcryo pump interlock ruleI tested the cryopump interlock today.
It is touchy. I do not have full confidence
in it.
 cryo.png 
  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 
  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.
  
  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
  
  1513   Thu Apr 23 21:13:37 2009 YoichiSummaryEnvironmentMag. 4 earthquake in LA tripped the watchdogs of the most optics So far, no damage is noticeable.
restoreWatchdog script was useful :-)
  
  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 
  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 
  1510   Thu Apr 23 16:35:23 2009 YoichiSummaryComputer Scripts / ProgramsrestoreWatchdog scriptWhen the IFO loses lock during the lock acquisition
steps, it often kicks the MC2 (through the
CM servo) and trips the watchdog.
  
  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.
  
  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
  
  1507   Wed Apr 22 11:16:26 2009 steveConfigurationVACCryo pump is ON and the Maglev is deadThe
CRYO pump cooled down and VC1 was opened.
This
 cryoOn.jpg 
  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 
  1505   Mon Apr 20 23:27:59 2009 ranaSummaryVACc1vac2 rebooted: non-functional for several monthsWe found several problems with the framebuilder
tonight. The first symptom was that it was
totally out of
  
  1504   Mon Apr 20 20:45:25 2009 ranaConfigurationGeneralSVN: project area addedI added the [B]/cvs/cds/project/[/B] directory
to the SVN. I've noticed that we've been
using target/ for code which is not
  
  1503   Mon Apr 20 20:00:44 2009 ranaConfigurationIOOMcWFS gains re-allocatedSince it looks like the night time people
have been running with a WFS gain of 0.05
and I like the slider
  
  1502   Mon Apr 20 19:51:51 2009 JenneConfigurationPSLPMC has new Level 13 Mixer installedThe new Level 13 mixer on the PMC servo
board is installed (minicircuits SRA-3MH).  
Since the RF output of the LO board was ~16dBm,
 PMColg20Apr2009.png 
  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, 
  
  1500   Mon Apr 20 18:17:44 2009 robSummaryLockingCARM offset/Power rubricPlotted assuming the average arm power
goes up to ~80.  No DARM offset.
 ARMpowersCARM.png 
  1499   Mon Apr 20 11:57:27 2009 robUpdateCamerasMafalda may need an update


   
        
            
  
  1498   Mon Apr 20 05:18:42 2009 YoichiConfigurationLockingFM6 and FM10 of LSC-MC were restoredDuring tonight's locking work, I realized
that FM6 and FM10 (both resonant gains around
20Hz) were actually activated by cm_step.
  
  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
  
  1496   Sun Apr 19 11:34:33 2009 josephbHowToCamerasUSB Frame Grabber - How toTo use the Sensoray 2250 USB frame grabber:
Ensure you have the following packages
installed: build-essential, libusb-dev
  
  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.
  
  1494   Fri Apr 17 11:37:32 2009 YoichiConfigurationComputer Scripts / ProgramsAutoDTTIn order to get test point data with AutoDTT,
you have to pre-trigger test points you want
to use.
  
  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
  
  1492   Thu Apr 16 17:48:00 2009 YoichiConfigurationComputer Scripts / ProgramsAutoDTTAs Peter mentioned in his entry on the last
night's locking, I imported AutoDTT from
Hanford.
  
  1491   Thu Apr 16 17:19:44 2009 AlbertoUpdateAuxiliary lockingthe zipper


   
        
            
 04_3f_Current_40m_plots.pdf11_3f_40mUpgrade_plots.pdf 
  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 
  1489   Thu Apr 16 16:26:57 2009 peteUpdateLockingWed. night lockingyoichi, pete

We installed the watchLockLoss script in
  
  1488   Thu Apr 16 11:17:56 2009 JenneUpdatePSLEdited c1psl.db to calibrate PMC's LO mon


   
        
            
  
  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")
{
  
  1486   Wed Apr 15 11:25:21 2009 steveConfigurationVAC RGA cal completed

    
        
 rga-090415-bg-d7-cald2.png 
  1485   Wed Apr 15 03:52:27 2009 ranaUpdateDMFNDS client32 updated for DMF Since   
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