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New entries since:Wed Dec 31 16:00:00 1969
ID Date Authordown Type Category Subject Text Attachments
  1669   Thu Jun 11 22:14:10 2009 AlbertoUpdateLSCDD Handoff for the Short DOFs completedThis afternoon I tuned the handoff script
for the SRC, after that Rob eralier during
the day had already adjusted that for PRC.
  
  1681   Tue Jun 16 20:03:41 2009 AlbertoUpdateElectronicsRequirements on Wenzel MultiplierFor
the 40m Upgrade, we plan to 
 SummaryOfResult.pdf 
  1686   Fri Jun 19 13:38:42 2009 AlbertoConfigurationComputerselog rebootedToday I found the elog down, so I rebooted
it following the instructions in the wiki.
  
  1688   Fri Jun 19 14:30:47 2009 AlbertoConfigurationComputerselog rebooted


   
        
            
  
  1709   Tue Jun 30 23:09:40 2009 AlbertoUpdateLockingchronicles of some locking attemptsTonight I tried to lock the interferometer.
At the first attempts the arm power didn't
go above about 4. The mode cleaner seemed
  
  1722   Wed Jul 8 11:13:36 2009 AlbertoOmnistructureComputerswireless router disconnectedOnce again, this morning I found the wireless
router disconnected from the LAN cable. No
martian WiFi was available.
  
  1725   Wed Jul 8 19:13:19 2009 AlbertoUpdatePSLPSL beam aligned to the Mode CleanerToday I tuned the periscope on the PSL
table to align the beam to the Mode Cleaner.
With the Wave Front Sensor control off, I
  
  1735   Mon Jul 13 00:34:37 2009 AlbertoDAQComputersAll computers down


   
        
            
  
  1736   Mon Jul 13 00:53:50 2009 AlbertoDAQComputersAll computers down


   
        
            
  
  1737   Mon Jul 13 15:14:57 2009 AlbertoUpdateComputersDAQAWGToday Alex came over, performed his magic
rituals on the DAQAWG computer and fixed
it. Now it's up and running again.
  
  1742   Tue Jul 14 00:57:11 2009 AlbertoUpdateLockingphotodiode alignment checkSince lately the alignment of the input
beam to the interferometer has changed, I
went checking the alignment of the beam on
  
  1749   Wed Jul 15 12:14:08 2009 AlbertoUpdateLockingphotodiode alignment check


   
        
            
 2009-07-15_PD9spectrumPDF.pdf 
  1755   Thu Jul 16 01:00:56 2009 AlbertoUpdateLockingPD9 aligned


   
        
            
 2009-07-15_PD9spectrumPDF02.pdf 
  1772   Wed Jul 22 01:57:19 2009 AlbertoConfigurationComputerscomputers are down


   
        
            
  
  1773   Wed Jul 22 09:04:10 2009 AlbertoConfigurationComputerscomputers are down


   
        
            
  
  1774   Wed Jul 22 10:49:40 2009 AlbertoUpdatePSLMC Alignment TrendTrying to track the MC positions back for
a few days, it seems that the data hasn't
been recorded properly for a while. Something
 2009-07-21_MC-align-trend.pdf2009-07-22_mc-align-trend.pdf 
  1776   Wed Jul 22 11:14:11 2009 AlbertoConfigurationComputerscomputers are down


   
        
            
  
  1783   Thu Jul 23 10:05:38 2009 AlbertoUpdatePSLSummary of the latest adventures with the alignment of the mode cleaner


  
  1784   Thu Jul 23 20:30:23 2009 AlbertoUpdatePSLBeam aligned to the FaradyAfter yesterday's changes in the MC cavity
state today it was necessary to optimize
the alignment to the Faraday.
  
  1785   Fri Jul 24 11:04:11 2009 AlbertoConfigurationComputerselog restartedThis morning I found the elog down. I restarted
it using the procedure in the wiki.
  
  1788   Fri Jul 24 21:02:46 2009 AlbertoUpdatePSLAligning the beam to the FaradayThis afternoon I kept working on the alignment
of the beam so that it matches at the same
the PSL periscope, the Mode Cleaner and the
  
  1794   Sun Jul 26 16:05:17 2009 AlbertoUpdatePSLAligning the mode cleaner


   
        
            
  
  1803   Wed Jul 29 11:58:57 2009 AlbertoUpdatePSLMC not lockingThis morning I found the Mode Cleaner unlocked.
I check the sliders for the mirrors
bias and they have not changed. Also the
  
  1817   Mon Aug 3 01:08:20 2009 AlbertoUpdatePSLMC unlockedFriday afternoon the mode cleaner got unlocked.
Then some adjustment of the MC1 bias sliders
locked it again. The driftmon showed the
  
  1818   Mon Aug 3 12:57:09 2009 AlbertoUpdatePSLMC unlocked


   
        
            
  
  1832   Wed Aug 5 09:25:57 2009 AlbertoDAQComputersfb40m is upFB40m up and running again after restarting
the DAQ.
  
  1837   Wed Aug 5 15:57:05 2009 AlbertoConfigurationComputersPMC MEDM screen changedI added a clock to the PMC medm screen.
I made a backup of the original file
in the same directory and named it *.bk20090805
  
  1841   Thu Aug 6 09:22:17 2009 AlbertoDAQGeneralcan't get trends


   
        
            
  
  1853   Fri Aug 7 11:39:13 2009 AlbertoUpdatePSLMZ AlignmentFor the last couple of days we've been
trying to find the cause that is preventing
us to get more than 0.85 for the arm power.
After
  
  1855   Fri Aug 7 14:31:39 2009 AlbertoUpdatePSLDAQ REstartedFor some reason a few minutes ago the FB
DAQ crashed and I had to restarted.
  
  1877   Mon Aug 10 16:41:31 2009 AlbertoConfigurationPSLPMC VisibilityAlberto, Rana
lately we've been trying to better
understand what's preventing the arm power
  
  1893   Wed Aug 12 15:02:33 2009 AlbertoConfigurationComputerselog restartedIn the last hour or so the elog crashed.
I  have restarted it.
  
  1936   Mon Aug 24 10:43:27 2009 AlbertoOmnistructureComputersRFM Network FailureThis morning I found that all the front
end computers down. A failure of the RFM
network drove all the computers down.
  
  1944   Tue Aug 25 21:26:12 2009 AlbertoUpdateComputerselog restartedI just found the elog down and I restarted
it.
  
  1945   Tue Aug 25 21:36:28 2009 AlbertoUpdatePSLreference cavity temp box temporarly out of order 
 Is that the reason of the PSL
craziness tonight? See attachment.
 2009-08-25_PSLtrend.png 
  1949   Wed Aug 26 15:42:17 2009 AlbertoUpdatePSLreference cavity temp box temporarly out of order

    
        
  
  1951   Wed Aug 26 16:11:41 2009 AlbertoUpdatePSLreference cavity temp box temporarly out of orderIt turned out that half an hour was too
long. In less than that the reference cavity
temperature passed the critical point when
  
  1953   Wed Aug 26 16:35:03 2009 AlbertoConfigurationPSLPSL reference cavity temperature box modificationsBasically, in addition to the replacement
of the resistors with metal film ones, Peter
replaced the chip that provides a voltage
  
  1966   Thu Sep 3 23:41:32 2009 AlbertoConfigurationLSCPOX (PD3) alignedToday I aligned the beam to PD3 (POX) since
Steve had moved it.
The DC power read 1.3mV when the
  
  1969   Mon Sep 7 23:18:01 2009 AlbertoUpdateLockingSome locking attemptsTried
to lock the interferometer but arm power
didn't get over 65.
  
  1972   Tue Sep 8 12:26:16 2009 AlbertoUpdatePSLConnection of the RC heater's power supply replacedI
have replaced the temporary clamps that were
connecting the RC heater to its power supply
  
  2044   Fri Oct 2 17:00:06 2009 AlbertoUpdateGeneral40m Update - Requirements on the 5x Frequency MultiplierHere's the gist of the requirements on
the 5x frequency multiplier for the upgrade
(see attachemnt - despite the preview down
 DesignOfTheMultiplier1-14-15.pdf 
  2049   Mon Oct 5 09:31:05 2009 AlbertoFrogsPSLPSL laser accidentally turned offAlberto, Steve,
While I was moving a cart near by
the PSL table I pushed the red emergency
  
  2053   Mon Oct 5 14:37:29 2009 AlbertoUpdateABSLAbsolute Length Meaasurement NPRO is onIn the revival of the experiement length
measurement for the recycling cavities, I
turned the auxiliary NPRO back on. The shutter
  
  2108   Sun Oct 18 15:46:08 2009 AlbertoConfigurationGeneralAntique, unused QPD removed from the AS table Inspecting the AS table to make an inventory
of the photodiodes in use around the interferometer,
I found a mysterious photodetector hiding
  
  2129   Wed Oct 21 15:07:45 2009 AlbertoUpdateWIKI-40M UpdatePhotodiodes' configuration for the UpgradeI uploaded on the Wiki (here)
the results of an inventory over our current
PDs, a list of the new ones that we're going
  
  2131   Wed Oct 21 17:12:30 2009 AlbertoUpdateelogBrowser context menu enabled on the Elog under HTM editing modeOn behalf of Steve and of the rest of the
not-native-English community at the 40m willing
to have their browser's spell checker working
  
  2174   Wed Nov 4 16:49:32 2009 AlbertoUpdateLSCArm Cavity Finesse MeasurementI'm going to work on the X arm to measure
the arm cavity finesse.
The idea is to measure the cavity
 DSC_0952.JPG 
  2175   Wed Nov 4 18:35:19 2009 AlbertoUpdateLSCArm Cavity Finesse Measurement

    
        
  
  2176   Wed Nov 4 21:46:18 2009 AlbertoUpdateLSCArm Cavity Finesse Measurement

    
        
  
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