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  40m Log, Page 168 of 346  Not logged in ELOG logo
ID Date Author Type Category Subject Text Attachments
  8969   Tue Aug 6 07:52:58 2013 manasaUpdateGeneralReady to pump downI did an alignment check of the IFO before
we start pumping down.
Arms were locked. PRM and SRM were
 MCspot_0806.pngOSEM_0806.pngOL_0806.pngQPD_0806.png 
  8968   Mon Aug 5 19:10:01 2013 KojiUpdateCDSChoosing LO Amplitudes and Frequencies - I suppose the green transmission paths
were thoroughly inspected and aligned in
prior to the measurement
  
  8967   Mon Aug 5 18:48:44 2013 gautamConfigurationendtable upgradeFull range calibration of PZT mounted mirrors for Y-endtable I
had prepared two more PZT mounted mirrors
for the Y-end some time back. These are:
 2-inch-CVI-Yawcalib.pdf2-inch-CVI-Pitchcalib.pdf1-inch-Laseroptik-Yawcalib.pdf1-inch-Laseroptik-Pitchcalib.pdf 
  8966   Mon Aug 5 18:18:32 2013 gautamUpdateCDSChoosing LO Amplitudes and Frequencies In
order to decide what frequencies to dither
the 4 degrees of freedom (M1-pitch&yaw,
 GTR_Power_Spectrum.pdf 
  8965   Mon Aug 5 18:02:34 2013 manasaUpdateGeneralClose up list checked

    
    Center
  
  8964   Mon Aug 5 11:53:45 2013 EvanUpdateISSCTN Servo - Explicit Requirement and Proposed ServoI goofed on the transfer function requirement
by not giving you the plant transfer function,
which looks to be about 0.014 V/V,  independent
  
  8963   Mon Aug 5 10:50:48 2013 SteveUpdateVACRGA background RGA background at day 12 of this
vent . The maglev is pumping on the rga through
VM2
 v75bgMd12.png 
  8962   Fri Aug 2 22:51:10 2013 JenneUpdateGeneralAll vent tasks complete, just need oplev check[Manasa, Koji, Jenne]
We went into the BS and IOO chambers,
and aligned the green beams such that they
  
  8961   Fri Aug 2 21:59:36 2013 CharlesUpdateISSFinalized ISS Schematic (hopefully) Attached is the finalized schematic. The
general circuit topology should remain the
same from this point forward, although individual
 ISS_v3.pdfISS_v3-Power_Reg.pdf 
  8960   Fri Aug 2 17:50:10 2013 JenneUpdateGeneralPR3 wedge angle adjusted[Jenne, Manasa, Koji]
Earlier today, we locked and aligned
both the X and Y arms. 
  
  8959   Thu Aug 1 22:58:45 2013 CharlesUpdateISSCTN Servo - Explicit Requirement and Proposed Servo In PSL
elog 1270, Evan elucidated the explicit
requirements for the CTN ISS board. Essentially,
 CTN_Servo_TF_-_Proposed_v_Req.pngCTNServo_v3.fil 
  8958   Thu Aug 1 22:49:31 2013 manasaUpdateGeneralGreen status after PR3 flipping investigated[EricQ, Koji, Manasa]
We opened the BS chamber to check
the status of the green beams. The X green
  
  8957   Thu Aug 1 21:28:09 2013 gautamUpdateCDSSlow channels set-up in ALS The following
slow channels have been added and are now
  
  8956   Thu Aug 1 20:58:56 2013 gautamUpdateCDSNew model for endtable PZTs-MEDM Screens setup 
I
 MAIN_SCREEN.pdfMATRICES.pdfLOCKINS.pdfCONTROL_FILTERS.pdf 
  8955   Thu Aug 1 18:55:20 2013 Alex ColeUpdateElectronicsPreliminary Photodetector Frequency Reponse Measurements

    

       
            
 POX11.jpgPOX11fit.jpg 
  8954   Thu Aug 1 16:33:39 2013 SujanUpdatePEMGuralp2 seismometer installed at North side of POX table1)Power to the seismometers were turned
down,
2)Guralp2 was moved to North side
 IMG_1213.JPG 
  8953   Thu Aug 1 16:03:52 2013 SteveUpdateGeneralreopen BS & IOO

    

       
            
 IOOnorth.jpg 
  8952   Thu Aug 1 15:28:44 2013 gautamUpdateCDSNew model for endtable PZTs-problem solved

    

       
            
  
  8951   Thu Aug 1 15:06:59 2013 jamieUpdateCDSNew model for endtable PZTs

    

       
            
  
  8950   Thu Aug 1 13:09:17 2013 gautamUpdateCDSNew model for endtable PZTs-procedure 
 These
are roughly the steps I followed in setting
  
  8949   Thu Aug 1 12:12:35 2013 gautamUpdateCDSNew model for endtable PZTsI have
made a new model for the endtable PZT servo,
and have put it in c1iscex. Model name is
 C1ASX_GDS_TP.png 
  8948   Wed Jul 31 21:12:05 2013 manasaUpdateGeneralPump down called off[Koji, Manasa]
We missed to check that we had the green
  
  8947   Wed Jul 31 17:02:17 2013 Alex ColeUpdateElectronicsPreliminary Photodetector Frequency Reponse Measurements[Eric, Alex]
We used our setup from yesterday
(elog #8940) to measure transimpedance measurements
 REFL11.jpgREFL33.jpgREFL55.jpgAS55.jpg 
  8946   Wed Jul 31 10:27:00 2013 SteveUpdateVACinstrument grade air is discontinouedWe have been using Air Liquide Instrument
Grade Air for venting the 40m vacuum envelope.
It is no longer available.
  
  8945   Wed Jul 31 09:51:43 2013 SteveUpdatesafetySujan receives safety trainingSujan got 40m specific basic safety training
this morning.
 IMG_0031.JPG 
  8944   Wed Jul 31 00:59:58 2013 manasaUpdateGeneralITMX chamber vented/Closing planMy Plan for closing:

Today:
  
  8943   Tue Jul 30 19:44:05 2013 gautamConfigurationendtable upgradeSecond mirror glued to PZT and mounted  
 I have
  
  8942   Tue Jul 30 19:40:47 2013 gautamConfigurationendtable upgradeDAC-PZT Driver Board Output Signal Chain Tested 
 [Alex, Gautam]
  
  8941   Tue Jul 30 18:56:31 2013 manasaUpdateGeneralITMX chamber vented/Closing plan[Koji,Manasa]
We removed the ITMX heavy door to
fix the oplev situation. 
  
  8940   Tue Jul 30 16:21:46 2013 Alex ColeUpdateElectronicsPhotodetector Input Modulation [Eric, Alex]
We successfully used our system to
modulate the input to a single photodetector.
  
  8939   Tue Jul 30 15:38:24 2013 manasaUpdateGeneralITMX oplev

    

       
            
  
  8938   Tue Jul 30 13:41:35 2013 KojiUpdateGeneralITMX oplevI wonder what optics is causing the halo
on the oplev beam.
It this comes from any uncoated lens
  
  8937   Tue Jul 30 11:30:55 2013 manasaUpdateGeneralITMX oplev

    

       
            
  
  8936   Tue Jul 30 00:21:15 2013 KojiUpdateGeneralVent progress[Koji, Manasa, Sujan] 
Tomorrow we'll make final checks
  
  8935   Mon Jul 29 21:57:45 2013 gautamConfigurationendtable upgradeHardware installed at 1X9 The following hardware   
  8934   Mon Jul 29 16:15:13 2013 KojiUpdateVACAC removedPrior to the access connector removal,
Manasa and I aligned the IFO mirrors. 
The arms were locked and aligned by
  
  8933   Mon Jul 29 16:04:40 2013 SteveUpdateVACAC removed Manasa, Eric, Evan, Koji and Steve,
Access connector removed in order
to complete alignment. Light aluminum with
 acout.pngAlAcACa.jpgAlAcACb.jpg 
  8932   Mon Jul 29 13:39:25 2013 gautamConfigurationendtable upgradePZT Driver Board-further changes 
 
I have
 D980323-C-modified.pdfD980323-C-modified-pg2.pdf 
  8931   Sun Jul 28 20:13:41 2013 AnnalisaUpdateGreen LockingY Phase tracker calibrationI did a calibration measurement for the
Y part of the BeatBox using a Marconi. This
is in order to get a more accurate calibration
 YbeatBox_Calibration.pdf 
  8930   Sun Jul 28 19:39:04 2013 AnnalisaUpdateendtable upgradePicture Yend table picture updated on the wiki
page
  
  8929   Fri Jul 26 22:45:14 2013 manasaUpdateGeneralVent progress[Koji, Manasa]
The arms were brought back to resonance
after yesterday's vent work.
  
  8928   Fri Jul 26 22:19:24 2013 CharlesUpdateISSISS - Full Schematic - Updated

    

       
            
 40mServo_v1.pdf 
  8927   Fri Jul 26 14:39:08 2013 CharlesUpdateISSPower Regulation for ISS BoardI constructed a regulator board that can
take 
  
  8926   Fri Jul 26 13:39:30 2013 KojiUpdateASCPOP QPD analysisIt was not actually easy to see from the
entry what signal was taken in what condition
but from the shape of the spectra
  
  8925   Thu Jul 25 14:45:06 2013 ranaUpdatePEMGuralp specgram with ligoDV and NDS2 Once you install a matlab newer than
2012a, you can install ligoDV as a matlab
app and get the NDS2 client software for
 a.pdf 
  8924   Thu Jul 25 14:02:53 2013 JenneUpdateSUSSR3, PR3 flippedYesterday afternoon, I went back into the
BS chamber, and flipped both PR3 and SR3.
  
  8923   Thu Jul 25 13:54:35 2013 manasaUpdateGeneralPR3 clamped and Y arm is back flashing[Jenne, Annalisa, Manasa]
After yesterday's flipping of PR3,
we lost our input pointing. Koji spent a
  
  8922   Thu Jul 25 12:53:45 2013 CharlesUpdateISSComparator + Triggering Prototype I realized I totally forgot to post
this last week, but I prototyped the comparator
and boost triggering portion of the ISS,
 Comparator_Prototype.pngComp_Triggering_Behavior.jpg 
  8921   Thu Jul 25 02:53:00 2013 KojiUpdateGeneralIFO Alignment after TT flipping - no progressThere was no progress tonight after Jenne
left. 
I could not find any reasonable fringes
  
  8920   Wed Jul 24 22:58:03 2013 CharlesUpdateISSISS - Full Schematic - Updated I have made significant changes to
the ISS schematic, mostly in the form of
adding necessary subsystems.
 40mServo_v1.pdf 
ELOG V3.1.3-