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  40m Log, Page 59 of 344  Not logged in ELOG logo
ID Dateup Author Type Category Subject Text Attachments
  2926   Thu May 13 05:06:43 2010 ranaUpdate40m Upgrading216 MHz resonance in the POY11 PD killed 
 This idea was tried before
by Dale in the ~1998 generation of PDs. Its
  
  2927   Thu May 13 15:19:44 2010 josephbUpdateCDSTrying to get lsc.mdl and lsp.mdl workingI had a chat with Alex this morning and
discovered that the dcu_ids 13,14,15,16 are
reserved currently, and should not be used. 
  
  2928   Thu May 13 23:59:46 2010 ZachSummaryIOOMC table leveled After the recent removal of the old
IMMT and the relocation of the Faraday isolator,
the MC table was tilted a bit (southward
  
  2929   Fri May 14 03:30:45 2010 KojiSummaryIOOMC table leveledThanks Zach.This was a great job.
It was not mentioned but: was the
Faraday clamped down on the table?
  
  2930   Fri May 14 08:18:46 2010 steveUpdateGreen LockingReflection from ETM and ITM !I stopped AWG  1 Hz drive to ITMYs.
ITMXe was also driven or oscillating. ITMXe
damping was off, so I turned it on. It did
 itmx1hzos.jpg 
  2931   Fri May 14 10:33:01 2010 ZachSummaryIOOMC table leveledAh... no, I didn't. That explains why there
were loose dogclamps on the table. I wrapped
them in foil and put them on the clean cart.
  
  2932   Fri May 14 12:14:26 2010 josephbUpdateCDSNeed to track down old code for lsc system and remove themI'm currently in the process of tracking
down what legacy code is interfering with
the new lsc model.
  
  2933   Fri May 14 16:14:37 2010 KevinUpdateGreen LockingGreen Laser Beam Profile

    
        
 profile.pngresiduals.png 
  2934   Fri May 14 16:19:22 2010 JenneUpdatePEMGuts of a Guralp[Jenne, Rana]
We took apart and examined one of
the Guralp seismometers this afternoon. 
  
  2935   Sat May 15 04:13:33 2010 KojiSummaryIOOMC table leveledFixing at the next time is absolutely OK.

  
  2936   Sun May 16 12:51:08 2010 kiwamuUpdateGreen Lockingreflected beam at PDMode matching
to the cavity has been done.
  
  2937   Sun May 16 19:25:45 2010 KojiUpdateGreen Lockingreflected beam at PDDon't
make a short cut. The beam size at a single
place does not tell you anything. 
  
  2938   Mon May 17 02:10:10 2010 KojiConfigurationIOOHow to lock / align the MCLet
me remind you how to lock and align the IMC
To lock
  
  2939   Mon May 17 10:57:16 2010 steveConfigurationSUSdamping restored to ETMYsETMY-south sus damping was restored   
  2940   Mon May 17 17:17:49 2010 josephb, steve, alberto, kiwamuUpdateCDSNew CDS computers now in racks.We placed 3 new computers in the racks. 
One in 1X4 (machine running SCX) and 2 in
1Y4 (LSC and SUS).  These are 1U chassis,
  
  2941   Mon May 17 19:42:11 2010 JenneUpdateIOOFirst steps toward MC mode measuring[Jenne, Kevin, Steve]
We made some progress toward getting
the MC's beam profile measured.  In
  
  2942   Tue May 18 01:40:56 2010 KojiUpdateIOOFirst steps toward MC mode measuringOK. Don't worry. This is just an initial
confusion which we also had for the suspensions
a while ago.
  
  2943   Tue May 18 11:54:29 2010 steveConfigurationSAFETYpsl mechanical shutter is not workingAs we learned yesterday, the PSL laser
power out put mechanical shutter is not working
in the remote mode. It only works in local
  
  2945   Tue May 18 12:04:13 2010 robUpdateIOOFirst steps toward MC mode measuring


   
        
            
  
  2946   Tue May 18 14:30:31 2010 josephbUpdateCDSLSC.mdl problem found and fixedAfter having checked old possibilities
and deciding I wasn't imagining the lsc.mdl
file not working, but working as another
  
  2947   Tue May 18 15:09:02 2010 steveConfigurationSAFETYPSL output shutter in order again


   
        
            
  
  2948   Tue May 18 16:19:19 2010 josephbUpdateCDSWe have two new IO chassisWe have 2 new IO chassis with mounting
rails and necessary boards for communicating
to the computers.  Still need boards
  
  2949   Tue May 18 16:44:35 2010 KojiUpdateIOOFirst steps toward MC mode measuringHere is the upadted list http://lhocds.ligo-wa.caltech.edu:8000/40m/Upgrade_09/Optics

  
  2950   Tue May 18 23:03:08 2010 JenneUpdateIOONo real progress....[Jenne, Kevin]
No real progress today.  We
opened the chambers and again tried to lock
  
  2951   Wed May 19 14:36:46 2010 AidanHowToPhase CameraPhase Camera algorithm and stuff I had a think about the algorithm
we might use for the phase camera measurement.
MATLAB has an fft function that will allow
 phase_camera_DC_comp.pdfphase_camera_F1_comp.pdfphase_camera_F2_comp.pdfload_raw_data.m 
  2952   Wed May 19 16:00:18 2010 JenneUpdateIOOHooray! We locked the MC! (and some other stuff)[Jenne, Kevin]
We opened up the MC chambers again,
and successfully got the MC locked today! 
  
  2953   Wed May 19 16:09:11 2010 josephbUpdateCDSRacks to small for IO Chassis railsSo I discovered the hard way that the racks
are not standard width, when I was unable
to place a new IO chassis into the racks
  
  2954   Wed May 19 22:28:05 2010 KojiUpdateIOOHooray! We locked the MC! (and some other stuff)Good! What was the key?
The MC2 spot looks very high, but
don't believe the TV image. Believe the result
  
  2955   Thu May 20 10:06:56 2010 AidanHowToPhase CameraPhase Camera- raw data video    
  2956   Thu May 20 12:10:44 2010 kiwamuUpdatePhotosETMY end table I updated the photo of ETMY end table
on the wiki.
http://lhocds.ligo-wa.caltech.edu:8000/40m/Optical_Tables
 ETMY_s.png 
  2957   Thu May 20 12:34:46 2010 kiwamuConfiguration40m Upgradingoptical breadboards with legsYesterday Steve and I revived two legs
to mount some optical breadboards outside
of the end table.
 leg1_small.pngleg2_small.png 
  2958   Thu May 20 13:12:28 2010 josephbUpdateCDSPreparations for testing lsc,lsp, scy,spy togetherIn /cvs/cds/caltech/target/fb modified:
master: cleaned up so only io1 (IO
processor), LSC, LSP, SCY, SPY were listed,
  
  2959   Thu May 20 13:29:40 2010 kiwamuUpdateGreen Lockingmode profile at PPKTP crystal I measured again the mode profile
of the beam going through the PPKTP crystal
by using the beam scan.
 PPKTPmode.png 
  2960   Thu May 20 14:18:59 2010 kiwamuUpdateGreen Lockingmode profile of 40m cavityThe mode
profile of the green beam going through 40m
 MMT40mcavity.png 
  2961   Thu May 20 20:03:37 2010 JenneUpdateSAFETYDon't walk down the Y(new convention) arm tonight!Please don't go
down the Yarm (Old Xarm) for right now, or
  
  2962   Fri May 21 00:21:24 2010 JenneUpdateSAFETYDon't walk down the Y(new convention) arm tonight!All clear.

  
  2963   Fri May 21 00:30:44 2010 JenneUpdateVACTP3 fore pump is very loud[Jenne, Kiwamu, and Steve via phone]
Around 9:30pm, Kiwamu and I came
back from dinner, and were getting ready
  
  2964   Fri May 21 00:51:06 2010 JenneUpdateIOOFirst MC mode measuring (hopefully) done[Jenne, Kiwamu, Steve]
Round 1 of measuring the MC mode
is pretty much done.  Yay.
  
  2965   Fri May 21 08:28:29 2010 steveConfigurationVACTP3 turned off


   
        
            
  
  2966   Fri May 21 11:56:34 2010 AlbertoUpdate40m Upgrading40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue.I update my old 40mUpgrade Optickle model,
by adding the latest updates in the optical
layout (mirror distances, main optics transmissivities,
 7x 
  2967   Fri May 21 14:31:46 2010 josephb,alexUpdateCDSNew computer and IO chassis working in 1X4Alex brought over a ADC, DAC, and PCIe
card which goes into the computer and talk
to the IO chassis.  We tried installing
  
  2968   Fri May 21 16:24:11 2010 KojiUpdateLSC40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue.1. Give us the designed arm length. What
is the criteria?
2. The arm lengths got shorter as
  
  2969   Fri May 21 16:27:45 2010 AlbertoOmnistructureEnvironmentThe control room is molding...... not just because we haven't locked
the interferometer for quite some time. I
mean, it literally stinks. The chiller's
  
  2970   Fri May 21 16:37:35 2010 steveConfigurationVACtp3's drypump replacedBob replaced the tipseal in an other drypump
and I swapped it in. TP3 turbo is running
again, it's foreline pressure is 40 mTorr.
  
  2971   Fri May 21 16:41:38 2010 Alberto, JoUpdateComputersIt's a boy!Today the new Dell computer for the GSCS
(General SURF Computing Side) arrived.
We put it together and hooked it
  
  2972   Mon May 24 07:53:57 2010 steveConfigurationPEMair cond. just turned ONIFO room temp 27.5C , Please remember to
turn AC back on !
 acoff.jpg 
  2973   Mon May 24 10:03:14 2010 ranaUpdateLSC40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue. 
 If you have a working 40m Optickle
model, put it in a common place in the SVN,
  
  2974   Mon May 24 11:32:05 2010 ranaUpdateLSC40mUpgrade Field Power and RF Power Spectrum at the ports. 38m/38.55m arm length issue.


   
        
            
 reflRFpowerVsArmLength.png 
  2975   Mon May 24 14:28:35 2010 kiwamuUpdateElectronicsbad power supply of a vme rackIn this morning I found daqawg didn't work.
After looking for the cause, I found
  
  2976   Mon May 24 16:34:22 2010 KevinUpdatePSLND Filters for 2W Beam ProfileI tried to measure the beam profile of
the 2W laser today but ran into problems
with the ND filters. With the measurements
  
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