40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 295 of 341  Not logged in ELOG logo
ID Datedown Author Type Category Subject Text Attachments
  2334   Wed Nov 25 15:42:27 2009 AlbertoUpdateABSLWorking on the AP table


   
        
            
  
  2333   Wed Nov 25 15:38:08 2009 robUpdateLockingMeasured MC length

    
        
  
  2332   Wed Nov 25 14:29:08 2009 robUpdateLockingMeasured MC length--FSS trend

    
        
 FSStrendpowerjump.png 
  2331   Wed Nov 25 12:28:22 2009 JenneUpdateSUSMC2 trippedJust felt a big "kerplunk" type
ground-shaking, presumably from all the antics
next door.  MC2's watchdog tripped as
  
  2330   Wed Nov 25 11:10:05 2009 JenneUpdateComputers40m frame builder backup acting funny

    
        
  
  2329   Wed Nov 25 11:02:54 2009 AlbertoUpdateABSLAbsL PLL not able to lock

    
        
  
  2328   Wed Nov 25 10:20:47 2009 AlbertoUpdateABSLAbsL PLL not able to lockLast night something happened on the
beat between the PSL beam and the auxiliary
NPRO beam, that spoiled the quality of the
  
  2326   Wed Nov 25 08:43:08 2009 AlbertoUpdateABSLWorking on the AP tableI'm working on the AP table. I also opened
the auxiliary NPRO shutter. The auxiliary
beam is on its path on the AP table and PSL
  
  2325   Wed Nov 25 03:05:15 2009 robUpdateLockingMeasured MC length

    
        
  
  2324   Tue Nov 24 19:16:02 2009 AlbertoUpdateABSLworking on the AP table


   
        
            
  
  2323   Tue Nov 24 18:24:54 2009 SanjitConfigurationAdaptive FilteringASS channels added to framebuilder 
[Sanjit, Jenne, Rob, Joe]
 
  
  2322   Tue Nov 24 16:06:45 2009 JenneUpdateComputers40m frame builder backup acting funny

    
        
  
  2321   Tue Nov 24 14:33:22 2009 AlbertoUpdateABSLworking on the AP tableI'm working on the AP table. I also opened
the auxiliary NPRO shutter. The auxiliary
beam is on its path on the AP table and PSL
  
  2320   Tue Nov 24 10:36:21 2009 KojiUpdateLSCMeasured MC lengthWhat I meant was the VCO driver, not the
FSS box.
As for the frequency, all written
  
  2319   Tue Nov 24 08:00:16 2009 ranaUpdateLSCMeasured MC lengthI propose that from now on, we indicate
in the elog what frequencies we're referring
to. In this case, I guess its the front panel
  
  2318   Mon Nov 23 21:36:38 2009 KojiUpdateIOOAligned PMC/RCI aligned the beam goes to PMC. It increased
the MC Trans from 8.25 to 8.30.
I also aligned the beam goes to RC.
 091123_PSL.png 
  2317   Mon Nov 23 21:30:29 2009 JenneUpdateLSCMeasured MC lengthWith Koji's help, I measured the length
of the Mode Cleaner.
The new modulation frequencies (as
  
  2316   Mon Nov 23 19:36:28 2009 JenneUpdateAdaptive FilteringHow to add ASS channels, so that they're saved to frames[Jenne, Sanjit]
We would like several channels from
the OAF/ASS screen to be saved to frames,
  
  2315   Mon Nov 23 17:53:08 2009 JenneUpdateComputers40m frame builder backup acting funnyAs part of the fb40m restart procedure
(Sanjit and I were restarting it to add some
new channels so they can be read by the OAF
  
  2314   Mon Nov 23 16:28:12 2009 steveSummaryCamerasVideo swicher options


   
        
            
  
  2313   Mon Nov 23 11:03:00 2009 steveUpdateSUSjackhammer special well under control


   
        
            
 dig10d.pngP1050740.JPG 
  2312   Mon Nov 23 10:11:03 2009 steveUpdatePEMlong term temp fluctuation of the 40m lab

    
        
 7ytemp.jpg 
  2311   Mon Nov 23 00:46:09 2009 rana, robUpdatePSLISS RIN: Its too high by 10xThis plot shows the RIN as measured
by the ISS. Its ~2 x 10^-7, whereas its supposed
to be more like 3 x 10^-8.
 Untitled.png 
  2310   Fri Nov 20 17:44:38 2009 JenneUpdateAdaptive FilteringSome svn shenanigans[Sanjit, Jenne]
Sanjit and I are trying to put names
to some signals which exist in SimuLink land,
  
  2309   Fri Nov 20 16:18:56 2009 robConfigurationSUSwatchdog rampdownI've changed the watchdog rampdown script
so it brings the SUS watchdogs to 220, instead
of the 150 it previously targeted. 
  
  2308   Fri Nov 20 13:54:45 2009 AlbertoOmnistructureEnvironmentNew Paper and Cardboard Recycling Bins Introduced to the 40mThe 40m produces a large amount of paper
and cardboard waste. It would be worth it
if we disposed those kind of garbages for
 DSC_1030.JPGDSC_1031.JPG 
  2307   Fri Nov 20 11:32:48 2009 HaixingUpdateSUSMagnetic levitationI added an integrator to increase
the gain at low frequencies (below 5 Hz).
In addition, I increased
 IntDiff.PNGS8007340.jpgS8007333.jpg 
  2306   Fri Nov 20 11:14:22 2009 josephb, alexConfigurationComputerstest points working on megatron and we may have filters with switch outputs built inAlex tooked at the channel definitions
(can be seen in tpchn_C1.par), and noticed
the rmid was 0. 
  
  2305   Fri Nov 20 11:01:58 2009 josephb, alexConfigurationComputersWhere to find RFM offsetsAlex checked out the old rts (which he
is no longer sure how to compile) from CVS
to megatron, to the directory:
  
  2304   Fri Nov 20 00:18:45 2009 ranaSummaryCamerasVideo MUX Selection Wiki pageSteve is summarizing the Video Matrix
choices into this Wiki page:
http://lhocds.ligo-wa.caltech.edu:8000/40m/Electronics/VideoMUX
  
  2303   Thu Nov 19 18:49:55 2009 AlbertoConfigurationelogElog debugging output - Down time programmed today to make changes

    
        
  
  2302   Thu Nov 19 16:04:48 2009 AlbertoConfigurationelogElog debugging output - Down time programmed today to make changesWe want the elog process to run in verbose
mode so that we can see what's going. The
idea is to track the events that trigger
  
  2301   Thu Nov 19 11:33:15 2009 josephbConfigurationComputersMegatron I tried rebooting megatron, to see if that
might help, but everything still acts the
same. 
  
  2300   Thu Nov 19 10:19:04 2009 josephbUpdateComputersMegatron tst statusI did a full make clean and make uninstall-daq-tst,
then rebuilt it.  I copied a good version
of filters to C1TST.txt in /cvs/cds/caltech/chans/
  
  2299   Thu Nov 19 09:55:41 2009 josephbUpdateComputersTrying to get testpoints on megatronThis is a continuation from last night,
where Peter, Koji, and I were trying to get
test point channels working on megatron and
  
  2298   Thu Nov 19 09:48:54 2009 steveUpdatePEMconstruction effect8 days plot: Thurdsay, Friday, Sat and
Sun without construction
 varseism.png 
  2297   Thu Nov 19 09:25:19 2009 steveUpdateMOPAwater was added to the laser chillerI added ~500 cc of distilled water to the
laser chiller yesterday.
 htempwtr.png 
  2296   Thu Nov 19 08:53:12 2009 peteFrogsEnvironmentdiesel fumes Instead of doing RCG stuff, I went
to Millikan to work on data analysis as I
couldn't stand the fumes from the construction.
  
  2295   Wed Nov 18 22:38:17 2009 KojiUpdateElectronicsmulti-resonant EOM --- EOM characterization ---How can I get those values from the figure?

  
  2294   Wed Nov 18 16:58:36 2009 kiwamuUpdateElectronicsmulti-resonant EOM --- EOM characterization ---In designing the whole circuit it is better
to know the characteristic of the EOM.
I made impedance measurement with
 EOM_impedance.png 
  2293   Wed Nov 18 16:24:25 2009 peteConfigurationSUSETMY suspension conencted to megatron ADC/DAC/cvs/cds/caltech/target/fb/daqd -c daqdrc
This starts the FB.
Now the dataviewer and DTT work!
  
  2292   Wed Nov 18 14:55:59 2009 kiwamuUpdateElectronicsmulti-resonant EOM --- circuit design ----The circuit design of multi-resonant EOM
have proceeded.
By using numerical
 whole_circuit.pngdesigned.pngmont.png 
  2291   Wed Nov 18 12:33:30 2009 Koji, josephbConfigurationSUSETMY suspension conencted to megatron ADC/DACHurraaaah!
We've got the damping of the suspension.
The Oplev loops has also worked!
The
 Untitled.png 
  2290   Wed Nov 18 11:27:33 2009 Koji, josephbConfigurationSUSETMY suspension conencted to megatron ADC/DAC

    
        
  
  2289   Wed Nov 18 01:12:15 2009 ranaUpdatePEMseismometers were not saturating during Halloween weekend   Untitled.png 
  2288   Wed Nov 18 00:38:33 2009 ranaSummaryElectronicsVoltage Noise of the SR560's OUTPUTs (the back panel)I've
measured the voltage noise of the SR560's
lead acid battery outputs; they're not so
 sr560.png 
  2287   Tue Nov 17 21:21:30 2009 robUpdateSUSETMY UL OSEMHad been disconnected for about two weeks. 
I found a partially seated 4-pin LEMO cable
coming from the OSEM PD interface board. 
  
  2286   Tue Nov 17 21:10:35 2009 ranaSummaryElectronicsBusby Low Noise Box: Photos and Upgrades   IMG_0217.JPGbusby-noise.png 
  2285   Tue Nov 17 21:10:30 2009 KojiConfigurationSUSETMY suspension conencted to megatron ADC/DACKoji, Rana
The megatron DAC was temporaly connected
to the suspension electronics for the DAC
  
  2284   Tue Nov 17 21:09:17 2009 Jenne, ranaUpdateGeneralLittle Thorlabs Photodiode[Rana, Jenne]
We opened up the little Thorlabs
battery operated PD to see what was inside. 
 ThorlabsPD.png 
ELOG V3.1.3-