40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 33 of 344  Not logged in ELOG logo
ID Date Author Type Categorydown Subject Text Attachments
  4827   Thu Jun 16 00:43:36 2011 KojiUpdateSUSVertex SUS Binary Output Boxes were turned off / need investigation- I was investigating the SUS whitening
issue.
- I could not find any suspension
  
  4828   Thu Jun 16 08:45:14 2011 steveUpdateSUSVertex SUS Binary Output Boxes removed

    

       
            
 P1070894.JPG 
  4829   Thu Jun 16 23:19:09 2011 KojiUpdateSUSVertex SUS Binary Output Boxes removed[Jamie, Koji]
- We found the reason why some
of the LEDs had no light. It was because
  
  4831   Fri Jun 17 08:03:48 2011 steveUpdateSUSITMY sus damping restoredITMY sus damping restored.
 
  
  4833   Fri Jun 17 17:02:15 2011 JamieUpdateSUSETMX/ETMY binary output modules (re)installed, not yet testedI have installed a new binary output module
in ETMY, where there was none previously. 
It is installed, powered (with working LEDs),
  
  4836   Mon Jun 20 09:04:13 2011 steveUpdateSUSETMX damping restoredETMX sus damping restored   
  4839   Mon Jun 20 11:04:03 2011 NicoleUpdateSUSWork Plan for Week 2Here is my work plan for this week:
Current Week Plan (Week 2)
  
  4844   Mon Jun 20 18:12:20 2011 NicoleUpdateSUSSmall Table Cleaned and Levelled    P6220198.JPGP6220199.JPG 
  4853   Wed Jun 22 12:24:44 2011 NicoleSummarySUSMidweek 2 Work SummaryI
have made my transfer function model
 P6220200.JPG 
  4858   Wed Jun 22 18:41:23 2011 NicoleSummarySUSBROKEN bread board circuit box and L9337 LED Current Versus Voltage CurveNOTE: The potentiometers on the  LED_I_vs_V_exp_plot.png 
  4868   Thu Jun 23 21:35:46 2011 Jamie, Rana, KiwamuUpdateSUSFix calibration for sus sensorsWe have fixed the counts-to-micron (cts2um)
calibration for the suspension sensor filters.
 Each suspension sensor filter bank (e.g.
  
  4869   Thu Jun 23 22:00:22 2011 JamieUpdateSUSburt snapshotI recorded a burt snapshot of these settings:
/opt/rtcds/caltech/c1/burt/autoburt/snapshots/2011/Jun/23/21:40
  
  4875   Fri Jun 24 01:05:32 2011 NicoleSummarySUSTransfer Function Model Analysis Summary and New Posted LED V vs. I CurveI have updated   
  4876   Fri Jun 24 07:40:23 2011 steveUpdateSUSPRM damping restoredThe PRM sus damping restored. C1:SUS-PRM_SDPD_VAR
is still 20-30mV and going up.  Side
gain  turned on. This pulled it down
  
  4879   Fri Jun 24 17:04:25 2011 NicoleUpdateSUSBasic Laser Safety Training; Moved TT Mirror; Horizontal Displacement Mech PlanToday Ishwita,
Sonali, and I completed basic laser safety
 CompiledParts.JPGHorizontalDispMount.JPG 
  4887   Sun Jun 26 18:35:16 2011 ranaHowToSUSfree swing all opticsI used scripts/SUS/freeswing-all.csh to
give the optics a kick and then turn off
their watchdogs and collect the free swinging
 ringdown.png 
  4892   Tue Jun 28 01:18:53 2011 ranaHowToSUSfree swing all opticsChris Wipf tells me that the EPICS Mutex
Jumbo Mumbo can be overcome by upgrading
our EPICS. We should get one of Jamie's assistants
  
  4902   Tue Jun 28 21:05:05 2011 JamieUpdateSUSSUS control model updatedI have updated the sus_single_control model,
adjusting/cleaning up/simplifying the LSC/POS
input signals, and routing new signals to
  
  4904   Tue Jun 28 22:36:04 2011 JamieUpdateSUSChecking binary switching of SUS whitening filterI have been checking the binary output
switching for the SUS whitening filters.
It appears that the whitening switching is
 botest.py 
  4906   Wed Jun 29 01:23:21 2011 haixingUpdateSUSissues in the current quad maglev systemHere I show several issues that we have
encountered in the quad magnetic levitation
system. It would be great if you can give
 config_2.png 
  4907   Wed Jun 29 11:13:13 2011 JenneUpdateSUSissues in the current quad maglev system


   
        
            
  
  4908   Wed Jun 29 11:25:07 2011 NicoleSummarySUSWeekly Summary of WorkUpdate of Week
3 Work:
  
  4913   Wed Jun 29 22:35:06 2011 NicoleSummarySUSCompleted Quad photodiode Box Circuit DiagramsI have finished
drawing the circ
 summingcircuit.jpgQPDYcircuit.jpgQPDX_2circuit.jpg 
  4916   Thu Jun 30 01:50:02 2011 JenneUpdateSUSITMX whitening, ETMX left free swingingWhile closing up the whitening shop for
the night, I noticed that the ITMX whitening
state (Whitening "On") is opposite
  
  4921   Thu Jun 30 11:36:54 2011 JamieUpdateSUSRe: ITMX whitening, ETMX left free swinging

    
        
  
  4929   Fri Jul 1 16:01:48 2011 JamieUpdateSUSETM binary whitening switching fixedI have fixed the binary whitening switching
for the ETMs (ETMX and ETMY).  See below
for a description of what some of the issues
  
  4930   Fri Jul 1 18:41:53 2011 JamieUpdateSUSCore optic sus damping controllers normalizedI found many of the core optic (ETMs, ITMs,
BS, PRM, SRM) suspension DOF damping controllers
(SUSPOS, SUSPIT, SUSYAW, SUSSIDE) to be in
  
  4931   Fri Jul 1 18:48:13 2011 JamieUpdateSUSETMY sus controller found to be in a bad stateI'm not sure what happened to ETMY SUS,
but it was in a pretty bad state.  Bad
burt restore, I would guess.
  
  4932   Fri Jul 1 18:54:34 2011 JamieUpdateSUSETMY binary whitening switching confirmed to be fixedAfter finally figuring out what was messed
up with ETMY I was able to get good measurements
  
  4933   Fri Jul 1 20:22:24 2011 ranaUpdateSUSETMY sus controller found to be in a bad stateActually, ETMY was the only good one. They
should all have the 30 Hz High pass as the
damping filter. I think these details are
  
  4934   Fri Jul 1 20:26:29 2011 ranaSummarySUSAll SUS Peaks have been fit        
MC1    MC2   
MC3    ETMX   ETMY  
 Screen_shot_2011-07-01_at_8.17.22_PM.png 
  4938   Tue Jul 5 13:35:56 2011 steveUpdateSUSPRM damping restoredThe PRM sus damping was restored. It's
side rms motion came down from 35 to 4 mV
immediately.     
  
  4941   Tue Jul 5 18:57:10 2011 JamieUpdateSUSMore normalization of all sus controllersBased on Rana's
comment I have gone through and moved
all of the corner frequencies for the high
  
  4942   Tue Jul 5 21:26:51 2011 ranaUpdateSUSMore normalization of all sus controllersThis is getting closer, but with the whitening
left OFF and the cts2um filter also OFF,
none
 Screenshot-1.png 
  4943   Wed Jul 6 02:12:36 2011 kiwamuUpdateSUSRe : More normalization of all sus controllers[Jenne / Rana/ Kiwamu]
 
  
  4944   Wed Jul 6 10:35:35 2011 JamieUpdateSUSRe : More normalization of all sus controllers


   
        
            
  
  4945   Wed Jul 6 11:45:20 2011 JamieUpdateSUSMore normalization of all sus controllers


   
        
            
  
  4946   Wed Jul 6 15:32:32 2011 JamieUpdateSUSRe : More normalization of all sus controllersSo after talking to Kiwamu about it, I
understand now that since the damping loops
need all of this extra gain when the high-pass
  
  4947   Wed Jul 6 16:44:37 2011 steve, kiwamuUpdateSUSBS oplev spectraHealthy BS oplev  BS.jpg 
  4948   Wed Jul 6 18:15:26 2011 kiwamuUpdateSUSRe: BS oplev spectra[Steve / Kiwamu]
Motivation:
 
  
  4956   Fri Jul 8 09:53:49 2011 Nicole SummarySUSSummer Progress Report 1A copy of my summer
progress report 1 has been uploaded to ligodcc
  
  4963   Tue Jul 12 17:30:24 2011 steve,UpdateSUSBS oplev spectra


   
        
            
 BS_oplev.jpg 
  4964   Wed Jul 13 12:24:46 2011 NicoleUpdateSUSWeekly UpdateThis week,  PHOTOSENSORPLAN.JPGprelimcircuit.JPGPCBforphotosensor.JPGlookingforbox.JPGaccelerometer.JPG 
  4966   Thu Jul 14 09:38:50 2011 steve,UpdateSUSBS oplev spectra

    
        
 BS_oplev.jpg 
  4967   Thu Jul 14 15:27:08 2011 steve,UpdateSUSSUS oplev spectras

    
        
 7x 
  4969   Thu Jul 14 20:24:32 2011 NicoleSummarySUSPhotosensor Head LessonsToday I tested
the photosensor head combination (2 Hamamatsu
 Photosensor_Head.jpg 
  4970   Fri Jul 15 01:11:21 2011 KojiSummarySUSPhotosensor Head LessonsRotate the PDs and the LED so that you
can put them as close as possible.
This is to increase the sensitivity
  
  4971   Fri Jul 15 08:48:36 2011 JamieSummarySUSPhotosensor Head LessonsNicole: I thought we had decided to use
teflon as the insulator between the PCB (yellow)
and the LED/PDs?  I don't think you
  
  4972   Fri Jul 15 09:25:02 2011 ranaUpdateSUSSUS oplev spectrasIn addition to the OL quadrants, you need
to plot the OPLEV_PERROR and OPLEV_YERROR
signals since these are the real signals
  
  4974   Fri Jul 15 14:23:30 2011 NicoleSummarySUSPhotosensor Head Lessons 
 Ah! I see! Thank
  
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