40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 39 of 341  Not logged in ELOG logo
IDup Date Author Type Category Subject Text Attachments
  1916   Mon Aug 17 02:12:53 2009 YoichiSummaryComputersFE bootfestRana, Yoichi

All the FE computers went red this evening.
  
  1917   Mon Aug 17 04:16:13 2009 YoichiUpdatePSLReference cavity reflection looks bad[quote]Rana, Yoichi
- We also moved the Refcav reflection camera
to look at the leakage through a reflection
  
  1918   Mon Aug 17 07:01:09 2009 ClaraUpdatePEMADC noisenessI shorted the inputs on three channels
and the outputs on three channels of the
Guralp box, and I did similar things with
  
  1919   Mon Aug 17 09:52:04 2009 robSummaryGeneralconlogger restartedI restarted the conlogger on op340m. 
This needs to be done when op340m is rebooted--it
wasn't done for some reason and so we've
  
  1920   Mon Aug 17 17:43:11 2009 ranaSummaryGeneralconlogger restartedAdded the conlog directory to the SVN,
minus the enormous data directory. We are
now free to make changes to the conlog code.
  
  1921   Mon Aug 17 17:48:49 2009 robSummaryGeneralconlogger restarted


   
        
            
  
  1922   Tue Aug 18 01:16:01 2009 JenneUpdatePSLMach Zehnder is realignedThe Mach Zehnder and I got to know each
other today.  The reason for redoing
the alignment was to improve pointing from
 MachZehnderOptics2.pdf 
  1923   Tue Aug 18 14:24:43 2009 YoichiSummaryPSLReference Cavity InspectionRana, Koji, Yoichi

To see why the reflected beam from the RC
  
  1924   Tue Aug 18 15:16:15 2009 robUpdateIOOMC WFS working againRob, Yoichi
 
The MC WFS have apparently been bad
  
  1925   Tue Aug 18 15:52:27 2009 JenneUpdatePSLMZI tweaked up the MZ alignment. 
The reflection had been around 0.550, which
kept the MEDM indicator green, but was still
  
  1926   Tue Aug 18 19:57:47 2009 rana, JenneUpdatePSLMZ- we finished the MZ alignment; the contrast
is good.
- we did the RFAM tuning using a
 MZ_RFAMmon_setup_small.jpgMZ_RFAMmon_SpecAnalyzer_small.jpgMZ_EOM_IRrefl2_small.jpg 
  1927   Wed Aug 19 02:17:52 2009 ranaOmnistructureEnvironmentControl Room Workstation desks lowered to human heightThere were no injuries...Now we need to
get some new chairs.
  
  1928   Wed Aug 19 17:11:33 2009 JenneUpdateIOOQPDs aligned


   
        
            
  
  1929   Wed Aug 19 18:02:22 2009 JenneUpdateLSCRF PDs alignedAll of the LSC RF PDs have been aligned. 
I didn't really change much of anything,
since for all of them, the beam was already
  
  1930   Wed Aug 19 23:57:35 2009 robUpdateLockingreport 
locking work proceeding apace tonight.
diagonalized DRM with setDDphases
  
  1931   Thu Aug 20 09:16:32 2009 steveHowToPhotosControl Room Workstation desks lowered to human height


   
        
            
 P1040788.pngP1040782.pngP1040786.pngP1040789.pngP1040785.png 
  1932   Fri Aug 21 17:05:04 2009 JenneUpdateGeneralrestarted the elog[Kevin, Jenne]
Kevin's awesome final report/elog
entry was so awesome that it crashed the
  
  1933   Fri Aug 21 17:28:50 2009 Kevin, ranaSummaryPEMMagnetic Field Measurements Around the Lab


 AC-field.pngDC-field.png 
  1934   Fri Aug 21 17:49:47 2009 YoichiSummaryComputersUpgrade FE conceptual planI started to draw a conceptual diagram of
the upgraded FE system.
http://nodus.ligo.caltech.edu:30888/FE/FE-Layout.html
 Picture_2.png 
  1935   Fri Aug 21 18:37:16 2009 JenneUpdateGeneralTransfer function of Mode Cleaner StacksUsing free-swinging Mode Cleaner OSEM data
and Guralp seismometers, I have taken transfer
functions of the Mode Cleaner stacks.
 TF_osems_guralps.png 
  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.
  
  1937   Mon Aug 24 16:48:57 2009 steveHowToVACnew UPS installed


   
        
            
  
  1938   Tue Aug 25 00:35:04 2009 ranaUpdateGeneralTransfer function of Mode Cleaner StacksLooks like all of the accelerometers and
seismometers have been disconnected since
early AM last Monday when Clara disconnected
 Untitled.png 
  1939   Tue Aug 25 01:27:09 2009 ranaConfigurationComputersRaid update to Framebuilder (not quite)


   
        
            
  
  1940   Tue Aug 25 02:37:53 2009 ranaConfigurationComputer Scripts / ProgramsFirefox 3.5 installed for 64 bit linux in apps/   DSC_0620.JPG 
  1941   Tue Aug 25 03:30:23 2009 YoichiSummaryWIKI-40M UpdateGreen lock and phase noiseWhile Koji and I were discussing about the
green laser lock, we wondered if the common
motion of the cavity mirrors,
 PhaseNoise.png 
  1942   Tue Aug 25 11:02:39 2009 ranaSummaryPSLTemperature BoxThe PSL Temperature Box (D980400-B-C, what
kind of numbering scheme is that?) modified
at LHO/LLO ~8 years ago to have better resolution
 D980400-B.pdf 
  1943   Tue Aug 25 18:42:42 2009 steveUpdatePSLreference cavity temp box temporarly out of order


   
        
            
  
  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 
  1946   Tue Aug 25 21:55:11 2009 ranaUpdatePSLreference cavity temp box temporarly out of orderThere's no elog entry about what work has
gone on today, but it looks like Peter took
apart the reference cavity temperature control
 Untitled.pngrc-heater.jpg 
  1947   Tue Aug 25 23:16:09 2009 Alberto, ranaConfigurationComputerselog moved in to the cvs pathIn nodus, I moved the elog from /export
to /cvs/cds/caltech. So now it is in the
cvs path instead of a local directory on
  
  1948   Wed Aug 26 14:45:14 2009 steveUpdatePSLPSL-FSS_RCTEMP of 4 yearsThe reference cavity vacuum chamber temp
is plotted starting Feb 22 of 2005
This plot suggest that the MINCO
 refcavtemp.jpg 
  1949   Wed Aug 26 15:42:17 2009 AlbertoUpdatePSLreference cavity temp box temporarly out of order

    
        
  
  1950   Wed Aug 26 16:10:28 2009 Peter KingConfigurationPSLPSL reference cavity temperature box modificationsThe 40m Lab reference cavity temperature
box S/N BDL3002 was modified as per DCN D010238-00-C.
These were:
 DSC_0731.jpg 
  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
  
  1952   Wed Aug 26 16:31:34 2009 steveUpdatePSLreference cavity temp box temporarly out of order


   
        
            
  
  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
  
  1954   Wed Aug 26 19:58:14 2009 Rana, AlbertoUpdatePSLReference Cavity Temperature Control: MINCO PID removedSummary: This afternoon we managed
to get the temperature control of the reference
cavity working again.
 rc.png 
  1955   Thu Aug 27 12:34:48 2009 YoichiUpdateLockingup to arm power 70Last night, I tried to run locking scripts.
The power went up to 70 a couple of times
.
  
  1956   Thu Aug 27 13:42:08 2009 ranaSummaryPSLReference Cavity Temperature Control: psl.db changesI made the changes
to the psl.db to handle the new Temperature
  
  1957   Thu Aug 27 14:00:33 2009 ranaUpdatePSLRC thermal servo impulse responseI stepped the TIDALSET and looked at
what happened. Loop was closed with the very
 Untitled.png 
  1958   Thu Aug 27 16:14:28 2009 steveSummaryOMCburned photodiodeOld -pre 6/2009  LLO DCPD 3 mm od
GTRAN photodiode
 20090827_173252.jpg20090827_170802.jpg 
  1959   Fri Aug 28 12:56:17 2009 YoichiUpdateLockingRF CARM hand off problemLast night,  the lock script proceeded to
the RF CARM hand-off about half of the time.
However, the hand off was still unsuccessful.
  
  1960   Fri Aug 28 13:49:07 2009 robUpdateLockingRF CARM hand off problem[quote]Last night,  the lock script proceeded
to the RF CARM hand-off about half of the
time.
  
  1961   Fri Aug 28 15:30:15 2009 steveConfigurationGeneralPOX rfpd removedI removed POX rfpd to see how it is mounted
on its base. It is here on the work bench
just in case someone wants to use it the
  
  1962   Tue Sep 1 11:23:36 2009 steveUpdateGeneralelectrical groundI was told yesterday, that on Friday the
construction people accidentally ripped out
one of the 40m soil ground.....AND HOW MANY
 ground.JPG 
  1963   Tue Sep 1 13:52:06 2009 steveConfigurationGeneralPOX rfpd is back & needs alignment


   
        
            
  
  1964   Thu Sep 3 10:19:35 2009 steve, albertoUpdatePEMparticle counts and burning hillsidesThe San Gabriel mountain has been on fire
for  6 days. 144,000 acres of beautiful
hillsides burned down and it's still burning. 
 fire6d.jpg40mgarden.JPG40mgarden2.JPGRBLOG-FIRE-SKY.JPG 
  1965   Thu Sep 3 11:20:26 2009 steveUpdateGeneralelectrical ground in place


   
        
            
 Gs-n.JPGnewground.JPG 
ELOG V3.1.3-