40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 66 of 344  Not logged in ELOG logo
ID Dateup Author Type Category Subject Text Attachments
  3278   Fri Jul 23 15:54:38 2010 kiwamuUpdateSUSPRM and TT installed[ Jenne, Koji and Kiwamu]
 
 DSC_2275.JPG 
  3279   Fri Jul 23 16:00:35 2010 steveUpdateSAFETYcrane load test tomorrowAll 3 cranes will be load tested at 1 ton
tomorrow morning between 9am and 2pm
Do not come to the 40m lab during
  
  3280   Fri Jul 23 16:02:16 2010 RanaUpdatePSLReference Cavity InsulationThis is the trend so far with the copper
foil wrapping. According to Megan's calculation,
we need ~1 mm of foil and the thickness of
 Untitled.png 
  3281   Fri Jul 23 18:55:25 2010 kiwamuUpdateSUSPRM and TT installedI updated    
  3282   Fri Jul 23 21:14:29 2010 RanaUpdatePSLReference Cavity InsulationI wrapped another ~3 layers onto there.
It occurs to me now that we could just get
some 2mm thick copper plates made to fit
  
  3283   Fri Jul 23 21:35:48 2010 ranaUpdateCDSRerouted RFM around c1lsc, took RFM card out of c1lsc I just realized that an unfortunate
casualty of this LSC work was the deletion
of the slow controls for the LSC which we
  
  3284   Sat Jul 24 13:13:41 2010 rana, steve, albertoUpdateGeneralInitial Crane Inspection reveals flaws: wiring and oilThe guy from KroneCrane (sp?) came today
and started the crane inspection on the X
End Crane. There were issues with our crane
  
  3285   Sat Jul 24 14:03:19 2010 AlbertoUpdateElectronicsFSS Oscilaltor Phase Noise Measurement[Rana, Alberto]
Today we measured the phase noise
of the oscillator used for the FSS.
 FSScrystalPhaseNoiseHigherGain.pdf 
  3286   Sat Jul 24 14:27:36 2010 ranaUpdateElectronicsFSS Oscilaltor Phase Noise MeasurementI reconnected the RF signal to the FSS
and to the FSS' EOM so that we could lock
the refcav again.
  
  3287   Sun Jul 25 18:47:23 2010 AlbertoUpdateSVNOptickle 40mUpgrade model updated to include short cavity length correctionsI uploaded an updated optickle model of
the upgrade to the SVN directory with the
optickle models (here).
  
  3288   Mon Jul 26 08:51:31 2010 steveUpdatePEM lowering AC setpoint by 2F makes PSL happy

    
        
 htempRTemp.jpg 
  3289   Mon Jul 26 10:02:42 2010 josephbUpdateCDSRerouted RFM around c1lsc, took RFM card out of c1lscIf you're refering to just the medm screen, 
those can be restored from the SVN. 
As we're moving to a new directory structure,
  
  3290   Mon Jul 26 10:04:24 2010 steveUpdateGeneralInitial Crane Inspection reveals flaws: wiring, oil and imbalance


   
        
            
 2500.JPGsedrum.JPG 
  3291   Mon Jul 26 11:15:23 2010 GopalHowToCOMSOL TipsPictures from Transfer Function Tutorial on the WikiThe attached pictures give a brief overview
of my transfer function measurement procedure
in COMSOL. For more details, please see the
 7x 
  3292   Mon Jul 26 12:31:36 2010 kiwamuUpdateCDSfront end machine for the X endA brief
report about the new front end machine "C1ISCEX"
installed on the X end (old Y end).
  
  3293   Mon Jul 26 14:24:46 2010 josephb, kiwamuUpdateCDSRFM test take 1Kiwamu and I strung a temporary RFM fiber
from the c1iscex machine (in the new 1X9
rack) to the c1sus machine (in the new 1X4
  
  3294   Mon Jul 26 20:12:18 2010 kiwamuUpdateSUSOSEMs on PRM [Alberto and Kiwamu]
We installed the OSEMs to the new PRM.
 DSC_2279.JPG 
  3295   Mon Jul 26 20:30:35 2010 JenneUpdateSUS2 Tip Tilts suspended and balanced[Koji, Jenne]
We were on Team Cleanroom, while
Kiwamu and Alberto were on Team Chamber. 
  
  3296   Tue Jul 27 11:24:53 2010 josephbHowToComputer Scripts / Programskilldataviewer scriptI placed a script for killing all instances
of the dataviewer program on the current
computer in /cvs/cds/caltech/scripts/general/. 
  
  3297   Tue Jul 27 11:43:24 2010 steveUpdatePEMair quality is bad todayThe lab is at 30,000 and Pasadena air is
at 1.1 e+6 particles /cf min of 0.5 micron.
 pemtoday.jpg 
  3298   Tue Jul 27 12:02:31 2010 GopalUpdateOptic StacksPreliminary Transfer Function Measurements on MC1/MC3I have successfully
completed a preliminary transfer function
 MC1_MC3_FDA_1.pngMC1_MC3_FDA_2.pngMC1_MC3_FDA_3.pngMC1_MC3_FDA_4.pngMC1_MC3_FDA_5.png 
  3299   Tue Jul 27 16:03:36 2010 ranaSummaryDAQDAQ timing test

    
        
 Untitled.png 
  3300   Tue Jul 27 16:33:50 2010 KojiSummaryGeneralHigh school students tourJenne made the 40m tour for the annual
visit of 30-40 students.
c.f.
 IMG_2657.jpg 
  3301   Tue Jul 27 18:42:57 2010 GopalUpdateOptic StacksBode Magnitude Plot and ConcernsI  completed
the frequency domain analysis mentioned previously
 Bode_Mag_MC1_MC3.png 
  3302   Tue Jul 27 21:38:21 2010 kiwamuUpdateSUSinstallation of in-vac optics[Alberto and Kiwamu] 
We put the PRM back approximately on
 DSC_2284.JPGDSC_2291.JPG 
  3303   Tue Jul 27 23:46:45 2010 JenneUpdateSUSQ measurements of 2 TTs[Koji, Jenne]
We took measurements of the Q of
all the modes that we could think of for
  
  3304   Wed Jul 28 01:05:44 2010 ranaUpdateSEIBode Magnitude Plot and Concerns1) Gravity has to be included because the
inverted pendulum effect changes the resonant
frequencies. The deflection from gravity
  
  3305   Wed Jul 28 12:09:06 2010 Sharmila,KatharineUpdateWIKI-40M UpdateMaglevWe have modeled our maglev setup in simulink
but we have a few corrections to make since
the system goes into undamped oscillations
 Picture_1.png 
  3306   Wed Jul 28 12:16:03 2010 GopalUpdateSEIBode Magnitude Plot and Concerns

    
        
 Bode_Disp_MC1_MC3_y.png 
  3307   Wed Jul 28 12:31:00 2010 GopalUpdateWIKI-40M Update7.21.10-7.28.10 Weekly UpdateSummary of this week's activities:
7/21: Frequency Domain Analysis of
rectangular bar; discussed with Koji how
  
  3308   Wed Jul 28 12:53:32 2010 channaUpdateComputersnds data listenerFor the sake of writing it down: /cvs/cds/caltech/apps/linux64/rockNDS   
  3309   Wed Jul 28 13:06:47 2010 RazibUpdatePhase Camera Attached are some calculation that I did
previously for the phasecamera setup. This
shows the nature of the beat signal that
 mean_100_snaps.pngstd_100_snaps.pngphase_cam_calc.pdf 
  3310   Wed Jul 28 14:34:29 2010 channaUpdateComputersinstallation on allegraI have done the following on allegra and
rosalba:
[root@allegra caltech]# yum install
  
  3311   Wed Jul 28 14:54:56 2010 steveUpdateSAFETYevacuation drill at the 40mHead count at the evacuation drill today.
I checked  alarms and flashers 
at room 104,102,101, 103, 105 and 107. They
 P1060520.JPG 
  3312   Wed Jul 28 16:42:21 2010 steveUpdateGeneralCrane gear box cheched


   
        
            
 P1060503.JPGP1060511.JPGP1060515.JPGP1060517.JPG 
  3313   Wed Jul 28 17:32:37 2010 kiwamuUpdateSUSinstallation of in-vac optics[Jenne, Koji and Kiwamu]
We have installed two steering mirrors
  
  3314   Wed Jul 28 18:24:57 2010 JenneUpdateGreen Locking2 Green Periscopes have mirrors, aligned[Koji, Jenne, Kiwamu]
This is to describe the work that
went on in the Cleanroom today.  Kiwamu's
  
  3315   Thu Jul 29 10:39:43 2010 kiwamuUpdateSUSRe: installation of in-vac opticsI updated the last entry   
  3316   Thu Jul 29 11:33:38 2010 kiwamuUpdateCDSPCI5565 driver for RFM Yesterday I installed a PCI-5565
driver on new C1SUS in order to test the
  
  3317   Thu Jul 29 12:13:28 2010 kiwamuSummaryCDSnear term plan [Joe and Kiwamu]
 current_setup_v2.png 
  3318   Thu Jul 29 12:31:09 2010 KojiSummaryGeneralLab ScheduleJuly 
29 Thu BS chamber work: Move cable
towers / green steering mirrors / (2 TTs
 PSL_work_schedule.pdf 
  3319   Thu Jul 29 12:31:24 2010 josephbUpdateCDSWorking DAC, working IOP - next up SUSOk, after a few minutes of talking to Alex,
I got the correct "GUI syntax"
through my head, and we now have a simple
 Simple_Green_Control.png 
  3321   Thu Jul 29 15:35:21 2010 josephb, kiwamuUpdateCDSWorking out ADC/DAC/BO wiringWe are currently using the SUS wiring diagram
found on Ben Abbott's page (link here)
to determine the ADC/DAC/BO channel numbers
  
  3322   Thu Jul 29 17:11:16 2010 GopalUpdateCOMSOL TipsIncluding Gravity in COMSOL[Gopal, Jan]
  
  3323   Thu Jul 29 17:12:48 2010 josephb, kiwamuUpdateCDSRe:Working out ADC/DAC/BO wiringWe
have installed  4 BO boards, 3 DAC boards
and 1 ADC board for new C1SUS.
They
 DSC_2302.png 
  3324   Thu Jul 29 20:43:32 2010 GopalSummaryOptic StacksModeling Tips and TiltsI have discovered a method of completely  XTrans_XDisp.pngXTrans_XDisp.pngYTrans_XDisp.pngZTrans_XDisp.png 
  3325   Thu Jul 29 21:13:39 2010 DmassUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystals


   
        
            
  
  3326   Thu Jul 29 22:08:32 2010 AlbertoUpdateSUSMore optics installed on the BS table[Koji, Steve, Kiwamu, Alberto]
- This afternoon we installed
a few new optics on the BS table: GR_PBS,
  
  3327   Thu Jul 29 22:58:25 2010 kiwamuUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystals- As you said, I just calculated the waist
position in the crystal because the speed
of light changes in a medium and eventually
  
  3328   Fri Jul 30 00:02:15 2010 DmassUpdateGreen Lockingwaist positon of Gaussian beam in PPKTP crystals


   
        
            
  
ELOG V3.1.3-