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ID Date Author Type Category Subject Text Attachments
  7685   Wed Nov 7 19:07:45 2012 JenneUpdateCamerasNo beam seen on external camera viewsI have written some scripts which collect
photos, then average them together, and subtract
out an averaged background (as Rana described
 BS_PRM_7Nov2012_SpotImage_pixelsTimes3.pngETMXF_7Nov2012_SpotImage_pixelsTimes3.pngETMYF_7Nov2012_SpotImage_pixelsTimes3.pngITMYF_7Nov2012_SpotImage_pixelsTimes3.pngMC2F_7Nov2012_SpotImage_pixelsTimes3.png 
  7684   Wed Nov 7 17:20:01 2012 jamieUpdateAlignmentJamie's tip tilt proposal

    

       
            
  
  7683   Wed Nov 7 15:51:44 2012 JenneUpdateAlignmentJamie's tip tilt proposalSteve's elog
7682 is in response to the conversation
we had at group meeting re: Jamie's proposed
  
  7682   Wed Nov 7 15:17:15 2012 SteveUpdateAlignmentsteering option with pico motor?We have two ready for vacuum 1.5" mirror mounts
with pico motors in our hands. 
 IMG_1795.JPG 
  7681   Wed Nov 7 14:59:35 2012 SteveUpdatePEMhigh particle count ALART & oplevs

    

       
            
 oplevs.png 
  7680   Wed Nov 7 11:43:29 2012 SteveUpdatePEMhigh particle count ALARTThe BS camber is open only. We should close
ASAP
Outside air quality is 1.7- 2.2 
 highpartcount.png 
  7679   Wed Nov 7 09:09:02 2012 SteveUpdateAlignmentAlignment-PRM and SRM  OSEM LL 1.5V are they misaligned?  9amNov7w.png 
  7678   Wed Nov 7 07:11:10 2012 ranaUpdateAlignmentAlignment- POY and oplevs. photos.The way to usually do image subtraction
is to:
1) Turn off the room lights.
  
  7677   Wed Nov 7 00:10:38 2012 Jenne UpdateAlignmentAlignment- POY and oplevs. photos.Can we have a drawing of what you did, how
you confirmed your green alignment as the
same as the IR (I think you had a good idea
  
  7676   Tue Nov 6 18:39:16 2012 DenUpdatedigital noiseifo checking systemMatlab version of ifo digital noise estimation
code is almost ready. It estimates digital
noise introduced by each filter bank in each
  
  7675   Tue Nov 6 17:22:51 2012 Manasa, JamieUpdateAlignmentAlignment- POY and oplevs

    

       
            
  
  7674   Tue Nov 6 17:07:04 2012 jamieUpdateAlignmentAS and REFLAS:   tmp6oTENk.pngtmplamEtZ.png 
  7673   Tue Nov 6 16:38:37 2012 jenne, jamie, ayaka, manasaUpdateAlignmentAlignment back under control againWe had a big alignment party early this
morning, and things are back to looking good. 
We have been very careful not to bump or
  
  7672   Mon Nov 5 20:37:01 2012 AyakaUpdateWienerFilteringPlay with wiener filtering I am trying to find what limits the
reduction rate with wiener filtering.
I did some calculations below:
 estimate.pngWfilter_notch.png 
  7671   Mon Nov 5 19:38:52 2012 jamie, jenne, ayaka, denUpdateAlignmentmore alignment woesEarlier this morning we thought things
were looking pretty good.  IPPOS, IPANG,
and the AS and REFL spots looked like they
  
  7670   Mon Nov 5 13:28:15 2012 jamieUpdateGeneral40m DCC document treeLink to the new 40m
DCC Document Tree: E1200979
  
  7669   Mon Nov 5 10:34:48 2012 SteveUpdateVACexisting vacuum documents

    

       
            
  
  7668   Mon Nov 5 09:53:35 2012 JenneUpdateAlignmentAS, REFL camera shotsToday's photos:
AS:
 AS_5Nov2012.pngREFL_5Nov2012.pngIPPOS_IPANG_weekend_trend.png 
  7667   Sat Nov 3 10:31:59 2012 ranaUpdateAlignmentPOP, POX, POY, IPPOS, IPANG, REFL all coming out of vac  That's good, but I request
two things:
1) Check that the REFL beam is coming
  
  7666   Fri Nov 2 21:40:04 2012 ManasaUpdateAlignmentAS, REFL camera shots 
 To get the camera shot of AS,
Y1 mirror on the path was replaced by a 99%
  
  7665   Fri Nov 2 20:41:53 2012 JenneUpdateAlignmentAS, REFL camera shotsThese don't show anything too interesting,
but we're including them to show where the
beams are right now on the cameras, so we
 AS_2Nov2012.pngREFL_2Nov2012.png 
  7664   Fri Nov 2 19:59:54 2012 JenneUpdateAlignmentPOP, POX, POY, IPPOS, IPANG, REFL all coming out of vac[Evan, Jenne, Jamie]
We used the green laser pointer technique
to adjust the POP steering mirrors behind
  
  7663   Fri Nov 2 16:09:14 2012 SteveUpdateGeneralOpen-sided mount - why

    

       
            
  
  7662   Fri Nov 2 14:37:36 2012 JenneUpdateGeneralOpen-sided mount - why

    

       
            
  
  7661   Fri Nov 2 13:20:35 2012 MashaUpdateMachineLearningFeedback controller

    

       
            
 standard_BATCH_0p35_ref_plant_lc.pngstandard_QUICKPROP_0p35_ref_plant_lc.pngstandard_RPROP_0p35_ref_plant_lc.pngstandard_INCREMENTAL_0p35_ref_plant_lc.pngstandard_INCREMENTAL_0p9_0p9_ref_plant_lc.png 
  7660   Fri Nov 2 03:28:54 2012 ranaUpdateGeneralbronze bushing for 40m vac

    

       
            
  
  7659   Thu Nov 1 20:20:33 2012 Den, AyakaUpdateWienerFilteringacoustic noise in PMCWe've subtracted acoustic noise from PMC
using 1 EM 172 microphone. We applied a 10
Hz high-pass filter to PMC length signal
 psd.pngcoh.png 
  7658   Thu Nov 1 19:28:48 2012 JenneUpdateAlignmentaligned, AS beam on cameraAfter everyone else did the hard work,
I moved the AS first-on-the-table steering
mirror sideways a bit so the AS beam is on
  
  7657   Thu Nov 1 19:26:09 2012 jamieUpdateAlignmentaligned, this time without the cryingJamie, Jenne, Nic, Manasa, Raji, Ayaka,
Den
We basically walked through the entire
  
  7656   Thu Nov 1 17:37:00 2012 SteveUpdateGeneralbronze bushing for 40m vacSuprema- SS clear edge mirror mount 2"
diameter is modified for 40m vacuum use.
One left and one right handed one. It's adjustment
 IMG_1764.JPG 
  7655   Thu Nov 1 10:58:49 2012 jamieUpdateAlignmentprogress, then setback - trend of BS table shiftHere's a plot of the BS, PRM, and MC1 suspension
shadow sensor trends over the last 24 hours. 
I tried to put everything on the same Y scale:
 foo.png 
  7654   Thu Nov 1 10:19:11 2012 jamieUpdateAlignmentTransmitance Measurements on LaserOptik mirror

    

       
            
  
  7653   Thu Nov 1 10:13:53 2012 jamieUpdateAlignmentTransmitance Measurements on LaserOptik mirror

    

       
            
  
  7652   Thu Nov 1 08:48:42 2012 steveUpdateAlignmentprogress, then setback - trend of BS table shift

    

       
            
 alignmentstrugle2d.pngalignmentstrugle2da.pngbefpd09252012.png 
  7651   Thu Nov 1 01:51:37 2012 ranaUpdateAlignmentprogress, then setback - trend of BS table shift  But these jumps in the OSEMs
are all at the level of 10-20 microns. Seems
like that wouldn't be enough to account for
  
  7650   Wed Oct 31 22:56:41 2012 DenUpdatePEMacoustic noiseMicrophone preamp box had a low-pass filter
at 2kHz, Ayaka changed it to 20 kHz by replacing
100pF capacitor with a 10pF.
 6x 
  7649   Wed Oct 31 17:36:39 2012 jamieUpdateAlignmentprogress, then setback - trend of BS table shift

    

       
            
  
  7648   Wed Oct 31 17:33:39 2012 KojiUpdateAlignmentTransmitance Measurements on LaserOptik mirror...Looks like the coating is out of spec
at any angle for 1064nm. E11200219-v2
  
  7647   Wed Oct 31 17:18:34 2012 JenneUpdateAlignmentprogress, then setback - trend of BS table shiftHere is a two hour set of second trends
of 2 sensors per mirror, for BS, PRM, ITMY
and MC1.  You can see about an hour
 PRM_BS_table_bumped_ITMY_MC1_no_big_change_2hoursBack.png 
  7646   Wed Oct 31 17:11:40 2012 jamieUpdateAlignmentprogress, then setbackjamie, nic, jenne, den, raji, manasa
We were doing pretty well with alignment,
until I apparently fucked things up.
  
  7645   Wed Oct 31 14:31:34 2012 SteveUpdatePEMhigh particle countHigh particle count confirmed with #2 counter  highparticlec.png 
  7644   Wed Oct 31 12:58:17 2012 RajiUpdateAlignmentTransmitance Measurements on LaserOptik mirror

    

       
            
 Transmission-plot@1064nm.pdfTransmission-data@1064nm.pdf 
  7643   Wed Oct 31 01:06:31 2012 DenUpdateAlignmentYarm 
 Jenne, Den
We looked at beam spots on ITMY and
  
  7642   Tue Oct 30 11:51:45 2012 JenneUpdateAlignmentPRC aligned, Yarm almost aligned[Raji, Jenne]
We tweaked PZT2, PZT1 (yaw only),
and PR3 (pitch only) to get the beam ~centered
  
  7641   Mon Oct 29 18:50:02 2012 JenneUpdateAlignmentPRC aligned, Yarm almost aligned[Jamie, Jenne, Raji, with consultation
from Nic, Ayaka and Manasa]
We went back and re-looked at the
  
  7640   Mon Oct 29 18:14:55 2012 DenUpdateSUS PITCH damping needed 
 We've received all parts that
we need for eddy current damping. I've made
 DSC_4787.JPGDSC_4791.JPG 
  7639   Mon Oct 29 14:57:41 2012 janoschUpdateGeneraltip-tilt phase maps
  
  7638   Mon Oct 29 11:27:42 2012 ManasaUpdateGeneraltip-tilt phase maps [Jan, Manasa]
Below are phasemaps for the tip-tilts
with both tilt and RoC removed. We have not
 6x 
  7637   Mon Oct 29 09:33:42 2012 SteveUpdateSUSPRM & ETMY sus damping restored    
  7636   Mon Oct 29 08:41:22 2012 AyakaUpdateAdaptive FilteringMicrophone noise again

    

       
            
  
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