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  40m Log, Page 103 of 341  Not logged in ELOG logo
ID Date Author Typeup Category Subject Text Attachments
  2483   Thu Jan 7 14:08:46 2010 JenneUpdateComputersWe haven't had a bootfest yet this week.....so today's the dayAll the DAQ screens are bright red. 
Thumbs down to that.
  
  2484   Thu Jan 7 14:55:36 2010 JenneUpdateComputersWe haven't had a bootfest yet this week.....so today's the day

    
        
  
  2486   Fri Jan 8 10:38:35 2010 josephb, kojiUpdateComputersRFM and MegatronLast night, we installed the VMI 5565 RFM
card into Megatron.  After turning off
the watchdogs for the ETMY optic, we disconnected
  
  2487   Fri Jan 8 11:43:22 2010 josephb, alexUpdateComputersRFM and MegatronAlex came over with a short RFM cable this
morning.  We used it to connect the
rfm card in c1iscey to the rfm card megatron
  
  2488   Fri Jan 8 15:40:14 2010 josephb, alexUpdateComputersRFM and RCGAlex added a new module to the RCG, for
generating RFMIO using floats.  This
has been commited to CVS.
  
  2491   Sat Jan 9 09:47:03 2010 AlbertoUpdateLSCProblems trying to lock the armsThis morning I've been having problems
in trying to lock the X arm.
The X arm's filter FM6 in the LSC
  
  2492   Sat Jan 9 11:07:30 2010 AlbertoUpdateLSCProblems trying to lock the arms

    
        
  
  2493   Sat Jan 9 15:02:01 2010 AlbertoUpdateABSLPRC scanningI scanned the PRC in the frequency range
of 30-60 MHz, untill the PLL lost lock. But
everything is working fine.
The
  
  2494   Sun Jan 10 13:32:09 2010 HaixingUpdateSUStransfer function measurement of the quadrant maglev circuit I have assembled the circuit and the
control box for the quadrant magnetic
levitation yesterday. The final setup
 6x 
  2495   Sun Jan 10 15:47:26 2010 KojiUpdateSUStransfer function measurement of the quadrant maglev circuit 1. Why do all of the BNCs have no GND connection?
Each should have the individual cables to
the ground. Each signal line and the corresponding
  
  2497   Sun Jan 10 16:50:34 2010 HaixingUpdateSUStransfer function measurement of the quadrant maglev circuit

    
        
  
  2498   Sun Jan 10 17:15:25 2010 KojiUpdateSUStransfer function measurement of the quadrant maglev circuit 1. Yes. That is the bad. You should eventually
replace the BNCs to the isolated ones.
2. OK. I like to emphasize again
  
  2500   Mon Jan 11 09:18:44 2010 AlbertoUpdateGeneralMeasurement runningI'm working on the AbsL experiment. A measurement
which involved the PRC locked is running
at the moment.
  
  2502   Mon Jan 11 11:06:53 2010 AlbertoUpdateABSLMeasurement running


   
        
            
  
  2503   Mon Jan 11 14:16:59 2010 JenneUpdatePEMGur2 cables reconnected to the PEM ADCUSo that we can use both Guralps for Adaptive
stuff, and so that I can look at the differential
ground motion spectra, I've reconnected the
  
  2504   Mon Jan 11 16:59:14 2010 AlbertoUpdateABSLInterferometer BusyI'm currently running a measurement on
the PRC.
Please don't interfere with the IFO
  
  2505   Mon Jan 11 19:36:13 2010 AlbertoUpdateABSLMeasurement runningLeaving for dinner. Back in ~1hr.
I left a measurement running. Please
don't interfere with it till I'm back. Thanks.
  
  2506   Mon Jan 11 21:49:17 2010 JenneUpdateABSLMeasurement running

    
        
  
  2508   Tue Jan 12 09:37:05 2010 AlbertoUpdateABSLIFO availableI finished measuring the AbsL for this
morning. The IFO is again available.
Please don't mess up with the
  
  2509   Tue Jan 12 11:34:26 2010 josephbUpdatePEMAllegra dataviewer

    
        
  
  2510   Tue Jan 12 13:24:50 2010 HaixingUpdateSUSQuadrant Magnetic LevitationI have tried to make the quadrant magnetic
levitation work but unfortunately I did
not succeed. During the experiment, I
 schmematic.png 
  2512   Wed Jan 13 12:01:06 2010 AlbertoUpdateComputersc1dcuepics, c1lsc rebooted this morningSince last night the alignemtn scripts
couldn't work.
c1lsc wasn't working
properly because attempts to lock the X arm
  
  2513   Wed Jan 13 12:03:00 2010 AlbertoUpdateABSLMeasurement now running. Please be carefulAt the moment I'm running a measurement
on the PRC and I'm planning to leave it going
for the time we'll be at the 40m meeting.
  
  2515   Fri Jan 15 11:21:05 2010 josephbUpdateComputersMegatron and tst model for ETMYThe tst model wasn't compiling this morning
due to some incorrect lines in the RfmIOfloat.pm
file located in /home/controls/cds/advLIgo/src/epics/util/lib
  
  2516   Fri Jan 15 12:04:26 2010 Sanjit, mevansUpdateAdaptive FilteringCanceling noise again! 
OAF is successfully canceling noise
again, thanks to Matt!
 OAF_15JAN2010.png 
  2517   Fri Jan 15 18:53:05 2010 josephb,peter,kojiUpdateComputersAttempted locking with Megatron replacing ETMY front endThis afternoon we attempted to lock the
interferometer using Megatron insteady of
the usual ETMY front end.
  
  2519   Sun Jan 17 19:18:55 2010 AlbertoUpdateComputersBoot fest to restart the computer and c1iscey not responding.Thi afternoon I found that the RFM network
in trouble. The frontends sync counters had
railed to 16384 counts and some of the computers
  
  2521   Mon Jan 18 18:34:01 2010 AlbertoUpdateABSLMeasurement in progressI started a long measurement of the PRC's
transmissivity. I'm leaving the lab and I'm
going to be back at about 8 tonight. Please
  
  2522   Mon Jan 18 20:58:40 2010 AlbertoUpdateABSLMeasurement in progress

    
        
  
  2523   Mon Jan 18 23:44:19 2010 kiwamuUpdateElectronicstriple resonant circuit for EOMThe first
design of the triple resonant EOM circuit
 whole_circuit.pngdesigned_circuit.png 
  2524   Tue Jan 19 00:10:44 2010 ranaUpdateElectronicstriple resonant circuit for EOMVery cool.     
  2525   Tue Jan 19 02:39:57 2010 kiwamuUpdateElectronicsdesign complete --- triple resonant circuit for EOM ---The design
of the triple resonant circuit has been fixed.
 realistic.pngscaling.png 
  2526   Tue Jan 19 02:40:38 2010 KojiUpdateElectronicstriple resonant circuit for EOMThe design looks very good. I have some
questions.
1. As far as I remember, you've
  
  2527   Tue Jan 19 03:04:14 2010 KojiUpdateElectronicstriple resonant circuit for EOMSelf-follow:
I got the answer of Q3 from the follow-up
entry.
  
  2528   Tue Jan 19 03:20:28 2010 KojiUpdateElectronicsdesign complete --- triple resonant circuit for EOM ---First I was confused, but now I think I
understood.
My confusion: 
  
  2529   Tue Jan 19 03:27:47 2010 kiwamuUpdateElectronicsRe: triple resonant circuit for EOM1. You are right, the gain for the
single resonant circuit was about 9.3 in
my measurement.
  
  2530   Tue Jan 19 10:30:29 2010 josephbUpdateComputersBoot fest to restart the computer and c1iscey not responding.

    
        
  
  2531   Tue Jan 19 12:54:39 2010 AlbertoUpdateABSLMeasurement in progressA measurement will be running for the next
hour. Please be careful.
  
  2532   Tue Jan 19 16:21:18 2010 AlbertoUpdateABSLWatchdogs not working and then fixedThis afternoon the watchdogs stopped working:
they didn't trip when the suspension positions
crossed the threshold values.
  
  2533   Tue Jan 19 23:26:07 2010 kiwamuUpdateElectronicsRe:Re: triple resonant circuit for EOM


   
        
            
 matching_edit.pngeq1.pngdesigned_response.png 
  2534   Wed Jan 20 20:11:56 2010 AlbertoUpdateABSLSome preliminary results from measuring PRC's transmissivity for an amplitude modulated beamHere I'm posting a plot showing a
set of measurements that I made in the past
few days to determine the absolute length
 2010-01-19_PRCtransmissivityVsModel.png 
  2536   Thu Jan 21 10:31:13 2010 KojiUpdateABSLSome preliminary results from measuring PRC's transmissivity for an amplitude modulated beamNice
and interesting plot.
  
  2538   Thu Jan 21 11:08:30 2010 kiwamu, steveUpdateVACDry Pump replacement This morning I and Steve replaced 
the dry fore pump of TP3, which is located
under the y-arm.
 DSCN0428.JPG 
  2541   Fri Jan 22 02:54:06 2010 AlbertoUpdateABSLOvernight measurementI'm leaving a measurement running overnight.
It should be done in about one hour.
Tomorrow morning, If you need to
  
  2542   Fri Jan 22 12:33:37 2010 josephb, alexUpdateComputersModified CDS_PARTS for Binary outputTurns out the CDSO32 part (representing
the Contec BO-32L-PE binary output) rquires
two inputs. One for the first 16 bits, and
  
  2543   Fri Jan 22 14:40:49 2010 AlbertoUpdateABSLOvernight measurement

    
        
 2010-01-21_PRCtransmissivityVsModel.png 
  2544   Mon Jan 25 11:42:24 2010 josephbUpdateComputersMegatron and BO boardI was talking with Vladimir on Friday discussing
the Binary Output board, we looked at the
manual for it (Contec DO-32L-PE) and we realized
  
  2545   Mon Jan 25 16:30:37 2010 AlbertoUpdateABSL166 MHz sideband turned offI turned off the modulation at 166MHZ
becasue I don't need it if I'm only locking
the PRC.
  
  2546   Mon Jan 25 16:46:33 2010 AlbertoUpdateABSL166 MHz sideband turned off

    
        
  
  2547   Tue Jan 26 03:28:56 2010 ranaUpdateABSL166 MHz sideband turned off 
 You can turn the 166 off if
you want. MZ is unhappy after its turned
  
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