40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 171 of 344  Not logged in ELOG logo
ID Dateup Author Type Category Subject Text Attachments
  8550   Wed May 8 17:23:04 2013 JamieConfigurationCDSfixed direct IPC connection between c1als and c1mcsAs with the previous post, I eliminated
and unnecessary hop through c1rfm for the
c1als --> c1mcs connection for the ALS
  
  8551   Wed May 8 17:45:49 2013 JamieConfigurationCDSMore bypassing c1rfm for c1mcs --> c1ioo IPCsAs with the last two posts, I eliminated
more unnecessary passing through c1rfm for
IPC connections between c1mcs and c1ioo.
  
  8552   Wed May 8 18:33:02 2013 KojiUpdateASSYARM ASS - faster and more precise convergencePrecise arm alignment is more demanded.
as the PRMI locking requires good and reliable
alignment of the ITMs.
 YARM_ASS.pngScreenshot.png 
  8553   Wed May 8 19:31:17 2013 JamieConfigurationLSCLSC: added new SQRT_SWITCH to power normalization DOF outputsThis removes the old sqrt'ing from the
inputs to the POW_NORM matrix (was only on
the POP110 I/Q) and moves it to the DOF outputs. 
  
  8554   Wed May 8 22:36:42 2013 KojiUpdateASSXARM ASS (YARM ASS - faster and more precise convergence)Same ASS setup for the X arm has been
done.
Now
 XARM_ASS.png 
  8555   Thu May 9 00:05:12 2013 rana, Koji, JenneSummaryLSCAA and AI changeWe would
like to increase the UGF of the PRC loop
 AAAI.pdf 
  8556   Thu May 9 01:36:32 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressProgress with end table:
Parts in green show assembled optics
that will not require any changes. Parts
 0509.png 
  8557   Thu May 9 02:19:53 2013 JenneUpdateLocking50% BS installed in POP pathKoji had the good idea of trying to measure
the motion of the POP beam, and feeding that
signal to PRM yaw to stabilize the motion. 
  
  8558   Thu May 9 02:47:23 2013 JenneUpdatePEMT240 at corner station - cabling thoughtsSomething that I want to look at is the
coherence between seismic motion and PRM
motion.  Since Den has been working
  
  8559   Thu May 9 15:07:51 2013 JenneUpdateGeneralDistances from CAD drawingSince I keep asking Manasa to "measure"
distances off of the CAD drawing for me,
I thought I might just write them all down,
 05091301.PDF 
  8560   Thu May 9 22:29:23 2013 ManasaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress[Annalisa, Manasa]
More optics have been put on the
table. Direction of the rejected beam from
  
  8561   Fri May 10 20:05:21 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressI rotated some mounts along
the green beam path, and I started aligning
the beam again.
  
  8562   Sat May 11 01:11:52 2013 KojiUpdateASCPRC mode stabilization with a shadow sensor at POPAh, AWESOME.
Indefinite PRMI lock was finally achieved.
 Screenshot.png130510_PRMI.pdf 
  8563   Mon May 13 17:24:38 2013 JenneUpdateWienerFilteringPRM YAW Wiener filteringI have done a quicky offline Wiener filter
to check how much PRM yaw motion we can subtract
using a seismometer in the corner station. 
 PRM_SUSYAW_subtractUsing_GUR1_xyz.png 
  8564   Mon May 13 18:44:04 2013 JenneUpdateLockingprcl angular motionI want to redo this estimate of where RIN
comes from, since Den did this measurement
before I put the lens in front of the POP
 TT_Q_measurements.pdf 
  8565   Mon May 13 21:35:55 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progressYend
table - Current status
  
  8566   Mon May 13 23:05:26 2013 KojiConfigurationLSCPRMI locking- Disabled MCL path in mcdown/mcupscript.
Nominal gain in mcdown/mcup was -50
and -100 respectively.
 130513_PRC_ASC.pdf130513_PRC_ASC_servo.pdf 
  8567   Mon May 13 23:05:51 2013 JenneUpdatePEMGUR1 masses recentered[Evan, Jenne]
Evan brought the Guralp handheld
readout paddle and cables back from the ATF
  
  8568   Tue May 14 01:13:35 2013 JenneUpdate40m UpgradingTRY realignedKoji noticed that earlier this afternoon
the Yarm ASS was working, but then after
dinner it was no longer working.  I
  
  8569   Tue May 14 01:56:20 2013 JenneUpdateGreen LockingXend Green tweakedI locked the Xarm on green.  At the
PSL table, I adjusted the steering mirror
to get the beam centered on the GTRX DC PD. 
  
  8570   Tue May 14 02:19:13 2013 KojiUpdateGreen LockingXend Green tweakedNote that I'm supposed to return one of
the two green beat PDs and the power supply.
  
  8571   Tue May 14 14:24:56 2013 SteveUpdate40m Upgradingenclosure removal  
 I'm planning to remove the
ETMY optical table enclosure and move it
  
  8572   Tue May 14 16:14:47 2013 Max HortonUpdateSummary PagesImporting New CodeI have figured out all the issues, and
successfully installed the new versions of
the LAL software.  I am now going to
  
  8573   Tue May 14 19:52:58 2013 RijuConfigurationRF SystemPD frequency response [Eric, Riju, Annalisa]
Today we have cleared up the fiber
spool near AP table. We have put the 1x16
 IMG_0520.JPGIMG_0521.JPG 
  8574   Tue May 14 20:27:19 2013 KojiConfigurationLSCOpenloop gain for PRMI lock May 13The OLTFs for PRCL and MICH for the last
night's lock were modelled using Yuta's python
script.
 LSCPRCLOLTF.pngLSCMICHOLTF.png130513.zip 
  8575   Tue May 14 20:30:29 2013 JamieSummaryIOOMC error spectrum at various FSS gain settings.I used the Agilent 4395A and the GPIB network
bridge to measure the MC error spectrum at
the MC servo board.
 7x 
  8576   Tue May 14 21:03:15 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN 
The new lenses arrived, and I put
  
  8577   Wed May 15 00:45:28 2013 ranaConfigurationLSCOpenloop gain for PRMI lock May 13 
 Pfft.
  
  8578   Wed May 15 08:29:28 2013 SteveConfigurationRF Systemfiber protection at splitter box area I positioned the fiber loaded protecting
tubing and anchored them so they can do their
job.
 fiberprotect.jpg 
  8579   Wed May 15 15:33:49 2013 SteveUpdateGeneralOn-Track QPD I tested On-Track (from LLO) OT
301  amp with PSM2-10 qpd. It was
responding. Jenne will calibrate it. 
  
  8580   Wed May 15 17:17:05 2013 JamieSummaryCDSAccounting of ADC/DAC channel availabilityWe need ADC and DAC channels for a couple
of things:

    POP QPD: 3x ADC
  
  8581   Wed May 15 17:38:49 2013 JamieSummaryCDSAA/AI requirements

    

       
            
  
  8582   Wed May 15 17:48:25 2013 JamieUpdateCDSmisc problems noticed in modelsI noticed a couple potential issues in
some of the models while I was investigating
the ADC/DAC situation:
  
  8583   Wed May 15 19:32:04 2013 ranaSummaryCDSAccounting of ADC/DAC channel availability
    
  
  8584   Wed May 15 21:27:39 2013 AnnalisaUpdate40m UpgradingEndtable upgrade for auxiliary green laser : progress 
GREEN
I still have problems in maximizing
  
  8585   Wed May 15 22:47:11 2013 JamieSummaryCDSAccounting of ADC/DAC channel availability

    

       
            
  
  8586   Wed May 15 23:38:04 2013 ranaUpdateelogcategories trimmedI deleted a bunch of useless categories
from the 40m elogd.cfg file. IF you find
your category has been deleted, you can now
  
  8587   Thu May 16 01:41:31 2013 JenneSummaryIOOFSS gain settings set

    

       
            
  
  8588   Thu May 16 02:34:38 2013 ranaUpdateComputer Scripts / ProgramsAutoRUN GUI resurrectedWe talked about the thing that watches
the scripts for autolocking during the meeting
today.
 Autorun.png 
  8589   Thu May 16 04:46:37 2013 JenneUpdateLSCKiwamu's sensing matrix measurement script revivedKiwamu had an old set of scripts for
measuring
the sensing matrices, but they were
  
  8590   Thu May 16 08:32:05 2013 SteveUpdate40m upgradingETMY op table disabled 
All ETMY optical table electronics-
lasers-pds turned off, disconnected in order
 linguaa.jpg 
  8591   Thu May 16 11:50:25 2013 KojiConfigurationElectronicsMeasurement and empirical models of the AI board TFsYesterday, I pulled out the AI board
for the PRM/BS SUSs. (After the investigation
it was restored)
 D000186AD_TF.pdfD000186AD_TF.zip 
  8592   Thu May 16 22:03:16 2013 KojiConfigurationLSCY Green BBPD returned to the PSL tableI borrowed the GTRY BBPD  for the
REFL165 trial before.
Now the PD is back on the PSL table.
  
  8593   Thu May 16 23:48:39 2013 JenneUpdateLSCKiwamu's sensing matrix measurement script revivedKoji locked the PRMI for me, and I took
some data.  I haven't finished figuring
out what to do with it / writing a processing
  
  8594   Fri May 17 00:32:32 2013 AnnalisaUpdate40m upgradingETMY - progress[Rana, Annalisa] 
 GREEN
 IMG_0536.JPG 
  8595   Fri May 17 15:38:51 2013 SteveUpdate40m upgradingETMY enclosure is on the way back 
 It  will arrive around 10 am Monday morning.
  
  8596   Fri May 17 16:06:14 2013 ranaUpdate40m upgradingETMY op table disabled 
 TODO:

    We need to replace all
  
  8597   Fri May 17 18:24:04 2013 AnnalisaUpdate40m upgradingETMY - progressI aligned the green beam into the Faraday.
I needed an HWP to have the right polarization
for the light entering the Faraday itself.
  
  8598   Fri May 17 18:58:58 2013 Jamie, KojiSummaryCDSWeird DAC bit flipping at half integer output valuesWhile looking at the DAC anti-imaging filters,
Koji noticed an odd feature of the DAC output:
 const.pdfsweep.pdf 
  8599   Fri May 17 19:56:52 2013 KojiSummaryCDSWeird DAC bit flipping at half integer output valuesLet me make a complimentary comment on
this effect.
Because of this oscillation feature,
  
ELOG V3.1.3-