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ID Date Authorup Type Category Subject Text Attachments
  5807   Fri Nov 4 13:04:50 2011 ZachUpdateGreen LockingPassive summing box modificationsI spent some time the other day trying
to diagnose the problem with the Y Arm universal
PDH box (S/N 17), which Katrin
 sum_circuit_new.pngsumbox_TFs.png 
  5808   Fri Nov 4 13:13:25 2011 ZachUpdateGreen LockingPDH box #17 modified, tooI also modified the Y-Arm PDH box itself
slightly. Previously, there was a flying
10k resistor from the SWEEP input to TP2.
  
  5822   Sat Nov 5 21:19:08 2011 ZachUpdateSUSDr. SUS paths updated--question of human oversight remainsOk, here's the deal:

    For the time being, I
have written a "
  
  5824   Sun Nov 6 16:58:25 2011 ZachUpdateSUSDr. SUS failed--NDS2 problems again Dr. SUS failed while trying to   
  5829   Mon Nov 7 12:51:44 2011 ZachUpdateelogRestarted elogI've noticed that it always takes running
the script twice for it to actually work.
I think there's something wrong with how
  
  5868   Fri Nov 11 00:18:53 2011 ZachUpdateElectronicsPrecision temperature controllerI have made   
  5893   Tue Nov 15 09:51:04 2011 ZachUpdateGreen LockingY end PDH lock : UGF at 17 kHz

    

       
            
  
  5902   Wed Nov 16 01:45:37 2011 ZachUpdateelogrestartedElog was hanging. Restarted it with script.   
  5926   Thu Nov 17 14:38:16 2011 ZachUpdateRF SystemStochmon?It turns out that we don't have all the
parts I would need to do a full prototype
  
  5936   Fri Nov 18 00:25:10 2011 ZachUpdateelogrestarted with script.   
  5937   Fri Nov 18 00:36:23 2011 ZachUpdateGreen LockingY-Arm PDH box modifiedI modified the Y-Arm PDH box (S/N 17)  pdh17_tf_vs_liso_11_17_11.png 
  5946   Fri Nov 18 12:11:24 2011 ZachUpdateGreen LockingY end green PDH servo : it's okay

    

       
            
  
  5954   Sat Nov 19 00:09:02 2011 ZachUpdateRF SystemFoam house on EOM

    

       
            
  
  5955   Sat Nov 19 00:34:36 2011 ZachUpdateRF Systemwhy the Newport 6000 isn't working I just figured out why the Newport
6000 isn't stabilizing the temperature. It is designed
  
  5956   Sat Nov 19 00:47:24 2011 ZachUpdateGreen LockingY-Arm locked with PDH Box #17I installed the newly modified PDH  error_sig_m_11_18_11.png 
  5976   Tue Nov 22 06:12:43 2011 ZachUpdateRF SystemPrototype temperature controllerTonight I built a simpler version of  refres1.pngrefres2.pngproto_temp_ctrl.pngschematic.png 
  5983   Wed Nov 23 00:00:53 2011 ZachSummaryGreen LockingSome issues on the Y end green PDH locking

    

       
            
  
  5984   Wed Nov 23 00:30:14 2011 ZachUpdateRF SystemEOM temperature controller trials[Jenne, Zach]
We did some testing of the prototype
temperature controller. When I left it late
  
  5985   Wed Nov 23 00:30:55 2011 ZachUpdateelogsucksTried the script 3 times and it didn't
come back. Pkill'd and then scripted. That
worked.
  
  5987   Wed Nov 23 13:53:36 2011 ZachUpdateGreen LockingSensor noiseThe in-loop Y-Arm error signal looks
equal to the beat note noise divided by the
Y-Arm OL gain in the broadband-noise region
 Yarm_ALS_2011Nov19_marked.png 
  5998   Thu Nov 24 12:45:12 2011 ZachUpdateIOORFAMPD channels / EOM monitor channels added to DAQJenne   
  6032   Tue Nov 29 02:09:15 2011 ZachUpdateRF SystemEOM temp stabilization fixedI inspected the temperature stabilization
circuit today to see why it wasn't working.
It didn't make sense that it just kept railing
 EOM_temp.png 
  6035   Tue Nov 29 14:22:03 2011 ZachUpdateRF SystemEOM temp stabilization performanceI left the EOM stabilization running overnight,
so we can finally see how the EOM temperature
stabilization does over long periods of time.
 Screen_shot_2011-11-29_at_1.33.50_PM.pngScreen_shot_2011-11-29_at_1.34.06_PM.pngScreen_shot_2011-11-29_at_1.41.03_PM.png 
  6040   Tue Nov 29 18:17:27 2011 ZachUpdateRF SystemEOM temp stabilization performance


   
        
            
  
  6043   Tue Nov 29 19:08:53 2011 ZachUpdateRF SystemEOM heater disconnectedI disconnected the heater at ~2:20
UTC, leaving the sensor circuit
operational. Don't be fooled by the apparent
 Screen_shot_2011-11-29_at_7.03.36_PM.png 
  6047   Tue Nov 29 23:03:34 2011 ZachUpdateRF SystemRFAM fluctuation reducedI was hesitant to claim that this is definitely
true without the control data we were taking
  
  6053   Wed Nov 30 13:52:09 2011 ZachUpdateRF SystemEOM temp stabilization ineffectualThis recent off/on run proved what I was
afraid of: the temperature stabilization
setup appears to do nothing except very near
 Screen_shot_2011-11-30_at_1.31.44_PM.pngScreen_shot_2011-11-30_at_1.29.48_PM.pngScreen_shot_2011-11-30_at_1.21.16_PM.png 
  6055   Wed Nov 30 22:09:20 2011 ZachUpdateRF Systemsome final EOM stabilization effortsFirst, things that were done:

    I was troubled by the
odd-looking noise in the EOM temperature
 EOM_temp_stab_and_unstab_new_11_30_11.pdf11MHz_wandwo_ctrl_and_adc_noise_11_30_11.pdf 
  6059   Thu Dec 1 12:27:51 2011 ZachMetaphysicsRF SystemRAM diagnosis/suppression plan?It seems like there is some confusion---or
disagreement---amongst the lab about how
  
  6069   Mon Dec 5 09:46:21 2011 ZachMetaphysicsRF SystemRAM diagnosis/suppression plan?Since no
one has made any comments
  
  6087   Thu Dec 8 01:26:31 2011 ZachUpdateRF SystemEOM temp sensor modifiedI
have modified the EOM temperature sensor
 100k_thermistor_response.pngRAM_with_temp.png 
  6088   Thu Dec 8 11:59:53 2011 ZachUpdateRF Systemfringing indeedHere is a trend of 11 & 55 I&Q,
along with the EOM temperature and PSL RMTEMP
signals. 
 RAM_with_temp_overnight.png 
  6101   Fri Dec 9 20:03:57 2011 ZachUpdateRF SystemLots of current used in Rich's demod boxD0902745-v5 (probably
the AP1053's):
 Screen_shot_2011-12-09_at_8.00.54_PM.png 
  6113   Tue Dec 13 16:31:40 2011 ZachUpdateIOOPSL beam realigned into MCThe
MC coupling had become re-shittified. As
  
  6116   Wed Dec 14 12:18:11 2011 ZachUpdateRF Systemheater reengagedI
reengaged the heater this morning, to compare
 heater_reengaged_12_14_11.png 
  6121   Wed Dec 14 16:19:46 2011 ZachUpdateRF SystemLO for new demod boxI'm not sure I agree with your conversions,
BUT:
The IQ boards use a PE4140, fancy
  
  6122   Wed Dec 14 18:06:39 2011 ZachUpdateRF SystemLO for new demod boxActually, the LO inputs to the IQ boards
have AP1053 (Cougar) amps on them. These
  
  6130   Sat Dec 17 11:53:46 2011 ZachUpdateSUSAborted Hysteresis testDo you guys have timestamps for when you
started/ended the test? I have been trying
to take some long-term RAM data but keep
  
  6138   Mon Dec 19 23:50:23 2011 ZachUpdateRF SystemRAMmonI have been looking at the swings in the
RAMmon channels since the heater was reengaged,
to compare them to the data from beforehand
  
  6197   Fri Jan 13 17:40:38 2012 ZachUpdateRF Systemfoam box and temp controller taken off of PSL tableI stole the foam EOM box and the temperature
controller circuit from the PSL table so
that I could continue with the RAM measurements
  
  6219   Tue Jan 24 13:36:05 2012 ZachBureaucracyGeneralIf I'm Peter Pan...   jamie_rufio.png 
  6255   Fri Feb 3 23:19:22 2012 ZachUpdateSUSOSEM testing beginsI took one of the spare OSEM satellite  IDE64_homestyle.png 
  6258   Tue Feb 7 03:05:08 2012 ZachUpdateSUSOSEM sat amp measurementsI did some more investigation on the  sat_amp_measurement_setup.pngpd_amp_vs_liso.pngLED_driver_vs_liso.png 
  6261   Thu Feb 9 12:38:15 2012 ZachUpdateSUSOSEM LED driver noiseFrank pointed out to me that I had dumbly
forgotten to include the voltage reference's
 LED_driver_vs_liso.png 
  6267   Fri Feb 10 02:43:37 2012 ZachUpdateSUSOSEM LED driver noise *reduced*I worked on the OSEM box a little more
today, with the hopes of reducing the measured
output current noise. 
 circuit.pngLT1031_vs_liso.pnginterstage_vs_liso.pngLED_driver_vs_liso.png 
  6307   Thu Feb 23 02:20:07 2012 ZachUpdateSUSwacky state of SUS input matricesThis reminds me that the whole Dr. SUS
situation never got taken care of. Where
  
  6399   Sat Mar 10 15:29:47 2012 ZachHowToComputer Scripts / ProgramsModeMatchrFor your mode matching pleasure, I  MMrLogo.png 
  6415   Wed Mar 14 13:27:15 2012 ZachHowToComputer Scripts / ProgramsModeMatchrI have added to ModeMatchr the capability   
  6443   Mon Mar 26 12:50:24 2012 ZachUpdateelogrestarted with scriptOn the plus side, it was the first time
I've had to do it in a while..
  
  6478   Tue Apr 3 01:52:15 2012 ZachUpdateLSCRAM simulation for Full ifo

    

       
            
  
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