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ID Date Author Type Category Subject Text Attachments
  4913   Wed Jun 29 22:35:06 2011 NicoleSummarySUSCompleted Quad photodiode Box Circuit DiagramsI have finished
drawing the circ
 summingcircuit.jpgQPDYcircuit.jpgQPDX_2circuit.jpg 
  4912   Wed Jun 29 14:43:12 2011 KojiUpdateLSCLSC model updatedLSC model has been updated and running,
- Now the power and signal recycling
cavity lengths are named "PRCL"
  
  4911   Wed Jun 29 13:56:42 2011 kiwamuUpdateGeneralminutes of 40m meeting    meeting.graffle.pdf 
  4910   Wed Jun 29 12:20:53 2011 kiwamuUpdateLSCsensing matrix measurement in PRMI configurationOf course
I made a mistake in my calculation of the
  
  4909   Wed Jun 29 11:45:54 2011 steveUpdateGeneralwhere are we storing PDs ?Photo diodes stored in the east arm cabinet
E4:  ALL PDs  meet here, fast 
or slow......
 P1070921.JPG 
  4908   Wed Jun 29 11:25:07 2011 NicoleSummarySUSWeekly Summary of WorkUpdate of Week
3 Work:
  
  4907   Wed Jun 29 11:13:13 2011 JenneUpdateSUSissues in the current quad maglev system


   
        
            
  
  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 
  4905   Wed Jun 29 00:35:36 2011 KojiUpdateLSCnew LSC overview screen 80% doneNew
LSC screen is 80% completed.
It is now accessible from the LSC
 LSC_OVERVIEW.png 
  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 
  4903   Tue Jun 28 22:07:46 2011 JamieHowToSAFETYEurocrate extender card fried (ie. Jamie did a very bad thing)IMPORTANT ELECTRONICS SAFETY
LESSON TO FOLLOW
Yesterday,
  
  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
  
  4901   Tue Jun 28 16:52:37 2011 SonaliUpdateGreen LockingRouting of fibre to PSL complete.1. Suresh and I completed the alignment
of the fibre and the three mirrors on the
ETMY table.
 coupled_fibre.jpgthe_fibre_route.jpgETMY_aftr_fibre_coupling2.png 
  4900   Tue Jun 28 15:23:21 2011 steveUpdateElectronicsCoilcraft RF-design kits are restockedOur design kits are full again. They are
waiting for a new brilliant PD design.
 P1070917.JPGP1070915.JPG 
  4899   Tue Jun 28 15:20:08 2011 kiwamuUpdateLSCsensing matrix measurement in PRMI configurationHere is
the result of the measurement of the sensing
 rawmatrix.pngsensmat.png 
  4898   Tue Jun 28 14:21:41 2011 kiwamuUpdateIOOsomething wrong ? : Power incident on REFL11 and REFL55The measured
change in the REFL DC power with and without
  
  4897   Tue Jun 28 11:25:56 2011 AlastairBureaucracyComputersrestarted elogThe manual instructions on the 40m wiki
for restarting wouldn't work.  I killed
the process okay, but then I got an error
  
  4896   Tue Jun 28 10:11:13 2011 steveUpdateIOOPower incident on REFL11 and REFL55


   
        
            
  
  4895   Tue Jun 28 09:50:03 2011 SureshUpdateIOOWFS2 RF responseThe WFS2  Transimpedance has been
measured to determine if it also suffers
from the same 200MHz oscillations seen in
 WFS2_transimpedance.pdf 
  4894   Tue Jun 28 07:46:54 2011 SureshUpdateIOOPower incident on REFL11 and REFL55I measured the power incident on REFL11
and REFL55.  Steve was concerned that
it is too high.  If we consider this
  
  4893   Tue Jun 28 02:11:47 2011 JenneUpdateLockingLatest MICH noise budgetI have measured / calculated the latest
MICH noise budget.  It doesn't really
look all that stellar.
 MICH_noise_budget_as_of_28June2011.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
  
  4891   Mon Jun 27 16:57:06 2011 steveUpdatePhotosHaixing is backHe has moved the levitation stuff for his
surf student to Jan's lab in W-Bridge.
 P1070914.JPG 
  4890   Mon Jun 27 10:04:29 2011 kiwamuSummaryGeneralWeekly report Summary
for the week ending June 26th. 
(Number
  
  4889   Mon Jun 27 00:23:11 2011 ranaUpdateCDSETMX SIDE problemThe slow readback of the ETMX side seems
to also have something flaky and bi-stable.
This is not an issue for damping, but it
 etmx-side.png 
  4888   Sun Jun 26 22:38:20 2011 ranaUpdateCDSMC1 LR dead for > 1 month; now revived temporarily Since the MC1 LRSEN channel is
not wasn't working, my input matrix
diagonalization hasn't worked today
 lrsen.pngbt.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 
  4886   Sun Jun 26 16:17:22 2011 ranaUpdateCDSdiagonalization of MC input matrixI have updated the scripts/SUS/peakFit/  inMatDiag.pdf 
  4885   Sun Jun 26 16:02:12 2011 kiwamuUpdateIOOFriday MC activity[Rana / Kiwamu]
 Last Friday we did several
things for MC :
  
  4884   Sat Jun 25 06:09:38 2011 kiwamuUpdateLSCFriday lockingI
was able to measure the sensing matrix in
the PRMI configuration.
  
  4883   Sat Jun 25 04:40:43 2011 SureshUpdateASCWFS1 Transimpedance measurementWFS1 Transimpedance
The
attached plots show the location of the ~29.5
MHz pole and the 59 MHz notch for each quadrant
 WFS1_transimpedance.pdfP6250224.JPGP6250223.JPG 
  4882   Sat Jun 25 00:00:28 2011 SonaliUpdateGreen LockingFibre Coupling. What I did today.
1. I tried to align the IR input
beam by aligning the two mirrors, to couple
 Fibre_coupling_successful_24_june.jpgBeam_output_on_screen.jpg 
  4881   Fri Jun 24 22:35:23 2011 ranaConfigurationCDSdataviewer broken on pianosaWhen I try to get minute trend, it says
"word too long". 
  
  4880   Fri Jun 24 21:21:46 2011 SureshUpdatePSLPlaced labels on the zig-zag mirrors on PSL tableI put labels on the pair of beam steering
mirrors which are at the output end of the
PSL table.  I had changed one of these
  
  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 
  4878   Fri Jun 24 10:38:01 2011 steveUpdateCamerasITMY camera gets fixedITMY gets new Tamron M118FM50 that has
improved close focusing. It is a small fixed
focal length camera so the video tube cover
  
  4877   Fri Jun 24 07:49:23 2011 steveUpdateABSLI-P curve of LWE with serial numbers

    

       
            
  
  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
  
  4875   Fri Jun 24 01:05:32 2011 NicoleSummarySUSTransfer Function Model Analysis Summary and New Posted LED V vs. I CurveI have updated   
  4874   Fri Jun 24 00:13:24 2011 kiwamuUpdateABSLbeam profile measurement of LWEThe
beam profile of the LWE (LightWave Electronics)
NPRO was measured.
 beam_profile.png 
  4873   Thu Jun 23 23:54:29 2011 KojiOmnistructureEnvironmentWe are savedSonali, Ishwita, and another anonymous
SURF saved the long-lasted water shortage
of the 40m
 IMG_0023.jpg 
  4872   Thu Jun 23 22:59:45 2011 kiwamuUpdateABSLI-P curve of LWE The  IP_curve_small.png 
  4871   Thu Jun 23 22:53:02 2011 kiwamuUpdateCDSran activateDQ.pyI found some DQ channels (e.g. SENSOE_UL
and etc.) for C1SUS haven't been activated,
so I ran activateDQ.py.
  
  4870   Thu Jun 23 22:39:34 2011 JenneUpdatePSLPMC found unlockedI found the PMC unlocked.  Koji noticed
that the FSS Slow Actuator Adjust was railed
at the positive end of the slider. 
  
  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
  
  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.
  
  4867   Thu Jun 23 21:34:21 2011 kiwamuUpdateCDSno foton on the CentOS machines For
some reasons foton's deafault sample rate
is NOT correct when it runs on the CentOS
  
  4866   Thu Jun 23 10:35:12 2011 steveUpdateComputersold computers leaving the labRod Luna picked up these computers for
Larry Wallace yesterday: Dell Inspiron 530,
Dell Dimension 4600 and SunBlade 1000
 P1070905.JPGP1070904.JPGblade1000.JPG 
  4865   Thu Jun 23 10:17:49 2011 steveUpdatePSLAP table is open to PSL againAccess to the north side of the PSL table
is blocked by the    8" beam
guard. This opens the beam pathways between
 P1070911.JPGP1070910.JPG 
  4864   Thu Jun 23 09:46:16 2011 ranaUpdateLSCPRMI locking : not stable enoughAll the suspensions are bad until you fix
them. But, ... there
  
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