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  40m Log, Page 95 of 341  Not logged in ELOG logo
ID Dateup Author Type Category Subject Text Attachments
  4737   Wed May 18 07:18:15 2011 SureshUpdateRF SystemPOY55_Demod board Hardware change completedThe ~350 Hz noted in the elog below was
traced to an RF modulation of the 11 MHz
sideband.  This modulation was set up
  
  4738   Wed May 18 15:54:50 2011 KojiUpdateRF SystemDC power supplies for the RF generation box in place[Koji, Steve]
DC power supplies for the RF generation
box are now in place. They are the top two
  
  4739   Wed May 18 16:52:23 2011 SureshUpdateRF SystemCables for AS11 PD are in place[Larisa, Suresh]
All the cables needed for the AS11
PD are in place... the heliax cable runs
 1Y2_Rack_Layout_short-term.png 
  4740   Wed May 18 17:06:39 2011 SureshUpdateRF SystemDC power supplies for the RF generation box in place 
I have checked the voltages on the
connector.  They are okay and I have
  
  4741   Wed May 18 18:33:46 2011 AidanUpdateelogrestarted elog with script    
  4742   Wed May 18 18:48:46 2011 kiwamuUpdateElectronicsidentification of RFPD interface cables[Haixing / Kiwamu]
 As a part of the Wednesday's
cabling work, we spent some times for identifying
  
  4743   Wed May 18 22:11:31 2011 ranaConfigurationLSCNew digital lockin added to LSC model/screen   Untitled.png 
  4744   Thu May 19 00:15:20 2011 JenneUpdateelogRestarted, Italian-styleAka, from a hotel in Pisa.   
  4745   Thu May 19 00:22:21 2011 ranaUpdateelogRestarted, Italian-style

    
        
  
  4746   Thu May 19 00:23:44 2011 ranaUpdateCDSdiagonalization of MC input matrix I've
moved all of my SOS peak fitting stuff into
  
  4747   Thu May 19 03:13:54 2011 kiwamuUpdateElectronicsREFL11 not working
 1305799561ZgerKtrd.gif 
  4748   Thu May 19 12:09:41 2011 josephbUpdateCDSAA filter box pulled from 1X5, optic suspensions currently off[Steve, Joe]
Steve pulled the top AA filter box
from 1X5 which handled some of the suspensions
  
  4749   Thu May 19 16:46:20 2011 kiwamuUpdateLSCc1lsc model : input channels rearangedAccording to Suresh's LSC rack design I
rearranged the input channels of the c1lsc
model such that the analog signals and the
 c1lsc.png 
  4750   Thu May 19 17:53:03 2011 steveUpdateCDSAA filter box modified at 1X5

    

       
            
 P1070727.JPG 
  4751   Thu May 19 19:41:17 2011 SureshUpdateRF SystemDAQ channel Assignments for RF PDs[Kiwamu, Suresh]
In trying to keep the wiring of the
LSC rack as neat as possible, we came up
 1Y2_Rack_Layout.png 
  4752   Fri May 20 01:02:50 2011 loose connection hunterUpdateSUSloose connection on ETMY rackThe
UL signal of the shadow sensor on ETMY went
to zero this evening. 
 ETMY_loose.png 
  4753   Fri May 20 03:01:17 2011 kiwamuUpdateLSClocking status(PRMI locking)
Since REFL11 has gone I tried locking
the PRMI with combination of REFL55 and AS55.
 Screen_shot_2011-05-20_at_2.50.00.png 
  4754   Fri May 20 03:29:04 2011 kiwamuUpdateCDSBinary IO box on 1X5 : LEDs off[Steve / Kiwamu]
 When Steve was working on the
strain reliefs on 1X5 he found that 
 DSC_3050_small.jpg 
  4755   Fri May 20 05:41:22 2011 SureshUpdateRF SystemDemod board measurementsThe POP110 board which had the large Amplitude
and Phase unbalances was examined today. 
It turned out that there was some stray solder
  
  4756   Fri May 20 11:37:44 2011 KojiUpdateElectronicsREFL11 fixed (REFL11 not working)- Found the inductor which shunts the positive
input of MAX4107 was not touching the ground.
 REFL11_transimpedance.pdf 
  4757   Sat May 21 06:19:46 2011 kiwamuUpdateLSCDRMI trial : no luckI will try with POY55 that Koji prepared
today.
  
  4758   Sat May 21 17:02:38 2011 KojiUpdateElectronicsAlberto's 11MHz was modified to POP55MHz- Resonant at 55MHz. The transimpedance
is 258Ohm. That is about half of REFL55 (don't
know why).
 POP55_schematic_110520_KA.pdfPOP55_transimpedance.pdf 
  4759   Mon May 23 00:36:51 2011 kiwamuUpdateLSCDRMI trial : sucessEventually the
D
  
  4760   Mon May 23 12:27:26 2011 kiwamuUpdateLSCDRMI trial : details(PRMI
locking with slightly misaligned SRM)
 First I tried locking PRC and
  
  4761   Mon May 23 14:28:23 2011 kiwamuConfigurationLSCPOY55 installedLast
Saturday the POY55 RFPD (see
this entry
 POY55.png 
  4762   Mon May 23 18:10:41 2011 kiwamuUpdateLSCf2p filters on PRM : not goodDuring
the DRMI trial I noticed that the f2p filters
on PRM is not quite effective
 f2p_PRM.png 
  4763   Mon May 23 18:16:42 2011 KojiConfigurationLSCPOY55 installedThe DC Transimpedance of POP55 was increased
from 50 Ohm to 10010 Ohm. There is the offset
of 46mV. This should be cancelled in the
  
  4764   Wed May 25 19:03:59 2011 JamieConfigurationCDSUpdate rtcds checkout of cds_user_apps with new top-level directory names.The top-level subsystem subdirectories
in the cds_user_apps source repository were
renamed today to be all lower case. 
  
  4765   Wed May 25 19:19:11 2011 JamieConfigurationCDS!!!CHECK IN YOUR MODELS!!!!!!CHECK
IN MODEL CHANGES!!!
Today
I found three models that were modified,
  
  4766   Wed May 25 20:12:55 2011 JamieConfigurationLSCNew digital lockin added to LSC model/screen


   
        
            
 lsc-lockin-adl.png 
  4767   Thu May 26 17:10:21 2011 JamieConfigurationLSCNew digital lockin added to LSC model/screen


   
        
            
  
  4768   Fri May 27 17:52:53 2011 steveUpdateLSCLSC rack cables strain relieved & labeledLSC rack 1Y2 cables are strain relieved
and labeled. Spare and/or obsolete cables
are laid out on the top of the beam tube
  
  4769   Mon May 30 23:14:27 2011 valeraUpdateASCY arm initial alignmentI closed all 8 dither loops for the Y arm
initial alignment: 2x2 centering servo (this
worked before) and 2x2 input beam servo for
  
  4770   Tue May 31 11:26:29 2011 josephbUpdateCDSCDS Maintenance1) Checked in the changes I had
made to the c1mcp.mdl model just before leaving
for Elba.
  
  4771   Tue May 31 11:34:13 2011 steveSummarySAFETYsafety glasses checked  1064 nm transmison were measured
of 40m safety glasses as shown . Their performance
did not degrade. They are as good as their
 P1070823.JPG 
  4772   Tue May 31 14:29:00 2011 jzweizigUpdateCDSframesThere seems to be something strange going
on with the 40m frame builder.
Specifically, there is a gap in the
  
  4773   Tue May 31 15:45:37 2011 JamieUpdateCDSc1iscey IOchassis powered off for some reason. repowered.We found that both of the c1iscey models
(c1x05 and c1scy) were unresponsive, and
weren't coming back up even after reboot. 
  
  4774   Tue May 31 16:07:57 2011 Larisa ThorneConfigurationElectronicsSeismometer Box Update (Continuation of this)
 
I plugged the circuit into the LISO
 SeisBoxLISOplot1.pdfSeisBoxLISOplot2.pdfSTS2diagram_original.pdf 
  4775   Tue May 31 17:30:42 2011 steveUpdateSUSETMY damping restoredETMY's watch dogs were found tripped. They
were restored.
  
  4776   Wed Jun 1 11:31:50 2011 josephbUpdateCDSMC1 LR digital reading close to zero, readback ~0.7 voltsThere
appears to be a bad cable connection somewhere
on the LR sensor path for the MC1 optic.
  
  4777   Wed Jun 1 13:33:22 2011 koji, taraUpdateElectronicsTTFSS #7 We replaced GE81 by PZT2907A (PNP transistor)
in TTFSS #7, it's working fine.
  Last time I broke Q4 transistor,
 q4.png 
  4778   Wed Jun 1 21:56:43 2011 KojiUpdateGeneralaLIGO BBPD / Green PD final resultHere is the conclusive result for the
circuit configuration for aLIGO BBPD and
40m Green PD. 
 PD_response.pdflinearity_GALI_6.pdf 
  4779   Thu Jun 2 10:19:37 2011 Alex IvanovSummaryDAQinstalled new daqd (frame builder) program on fb (target/fb/daqd)I hope that new daqd code will fix the
problem with non-aligned at 16 seconds frame
file GPS times.
  
  4780   Thu Jun 2 16:23:42 2011 JamieUpdateSUSSUS control models updated to use new sus_single_control library partA new library part was made for the single
suspension controller (it was originally
made from the c1scx controller), using the
  
  4781   Thu Jun 2 16:31:41 2011 JamieUpdateCDSaquired SUS channel name suffixes changed from _DAQ to _DQCDS changed the suffix for all aquired
channel names from _DAQ to _DQ.  When
we rebuilt the sus models, described in the
  
  4782   Thu Jun 2 23:10:10 2011 KojiUpdateElectronicsREFL11 test results (Re: REFL11 fixed)The full characterization of REFL11 is
found in the PDF.
Resonance at 11.062MHz
 REFL11_test.pdf 
  4783   Fri Jun 3 14:27:32 2011 KojiUpdateElectronicsPOP55 test resultsThe full characterization of POP55 is found
in the PDF.
Resonance at 54.49MHz
 POP55_test.pdf 
  4784   Fri Jun 3 18:12:03 2011 steveUpdateComputersno PEM channelsAA filter box was removed and modified
at 1Y7 today. The -5V power supply was current
limited when I plugged it back in. It was
  
  4785   Sat Jun 4 15:26:04 2011 Larisa ThorneUpdateElectronicsSeismometer Box Update (continuation of this)
 
Here are the transfer function and
 SeisBoxLISO_transfer.pdfSeisBoxLISO_noise.pdf 
  4786   Mon Jun 6 02:09:39 2011 ranaUpdateElectronicsPOY11 Rework Nearly CompleteI've  777.png 
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