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  40m Log, Page 222 of 335  Not logged in ELOG logo
ID Date Author Typeup Category Subject Text Attachments
  9970   Mon May 19 09:19:44 2014 SteveUpdateLSChappy IFO15 hours  whenthinksareworking.png 
  9971   Mon May 19 22:44:21 2014 denUpdatePEMxend sei isolation kit is set

    

       
            
  
  9972   Tue May 20 02:12:35 2014 JenneUpdateLSCALS X noise investigation[Rana, Jenne]
We
have looked at a few things that do and don't
 ALS_outofloop_19May2013.pdfXbeatSaturate.png 
  9974   Tue May 20 11:48:22 2014 SteveUpdateSUSbeam dumps added to ETMX_ISCTAnodized aluminum dumps replaced by 6 razor
beam dumps.
Two more razor beam dumps added this
 razorbeamdumps.jpgrazorbeamdumpss.jpg 
  9976   Tue May 20 16:48:52 2014 ericqUpdateLSC3f StabilitySo, I really should have done this as soon
as Manasa
measured the arm lengths... I've
 3fs.pdfCARMsweepPrcFields.pdf 
  9977   Tue May 20 22:42:28 2014 ericqUpdateLSC3f Stability Here's the angles of MICH and PRCL
from the my earlier plot by themselves; this
shows that the individual demod angles in
 PRCangles.pdf 
  9978   Wed May 21 00:18:40 2014 JenneUpdateLSCPRMI locked with REFL33 vs. REFL165Since Q has found that REFL165 will be
better for holding the PRMI while we reduce
the CARM offset, I had a look at locking
 PRMI_outofloop_20May2014.pdf 
  9979   Wed May 21 05:05:39 2014 JenneUpdateLSCREFL 165 vs 33 investigations[Rana, Jenne]
We spent some time tonight looking
at locking the PRMI with REFL165 vs. REFL33,
  
  9980   Wed May 21 09:35:33 2014 SteveUpdateSUS razor beam dumps ETMX_ISCT

    

       
            
 9rbdETMY.jpg 
  9981   Wed May 21 11:11:01 2014 manasaUpdateIOOMC tunedI found MC unlocked this morning. I looked
at the 2 day trend of the MC suspensions
and found MC2 suspensions have been misaligned.
 MC_SUS2days.png 
  9982   Wed May 21 13:18:47 2014 ericqUpdateCDSSuspension MEDM BugI fixed a bug in the SUS_SINGLE screen,
where the total YAW output was incorrectly
displayed (TO_COIL_3_1 instead of TO_COIL_1_3).
  
  9983   Wed May 21 13:20:34 2014 manasaUpdateLSCALS X noise from angular motion of mirrors

    

       
            
 ALSX_OLYerrITM.png 
  9984   Wed May 21 13:51:19 2014 SteveUpdatesafetyscope battery recallTektronix RECALL
on TDS3000 or TDS300B  oscilloscope
  
  9986   Wed May 21 22:15:37 2014 ericqUpdatePSLPMC relockedPMC has been unlocked for ~4hrs, not sure
why. It's servo gain was down at -10dB...
Relocked with transmission of .76V,
  
  9988   Thu May 22 00:30:40 2014 manasaUpdateLSCALS X noise from angular motion of mirrorsBelow are the transfer functions measured
between the angular (pit, yaw) motion of
X arm mirrors and the ALSX error signal.
 ALSX_OLPerrITM2.pngALSX_OLYerrITM.pngALSX_OLPerrETM.pngALSX_OLYerrETM2.png 
  9989   Thu May 22 11:21:06 2014 SteveUpdateSUSETMX oplev

    

       
            
 ETMXoplev.png 
  9990   Fri May 23 11:58:28 2014 manasaUpdateGreen LockingY arm green alignment tunedThe Y arm green transmission had come down
to 0.3 and the green steering mirrors on
the Y end table required some minor alignment
  
  9991   Sat May 24 22:56:57 2014 JenneUpdateElectronicsAmplifier removed from BeatX pathI just realized that I forgot to elog this,
but yesterday afternoon I bypassed the amplifier
in the BeatX path, and now the X beatnote
  
  9992   Mon May 26 07:59:23 2014 KojiUpdateElectronicsAmplifier removed from BeatX pathAnd the out-of-loop level of the ALSX compared
with the previous measurement is ...?

  
  9993   Mon May 26 20:10:14 2014 ericqUpdatePSLPMC relockedI came in and PMC transmission was at 0.5V,
and ETMX was swinging around a lot, (LSC
mode was on). 
  
  9994   Tue May 27 11:00:43 2014 SteveUpdateVACRGA scan at day 111 
 Rga scan at pump down 77, vacuum
normal valve configuration, maglev rotation
 pd77d111RGA.png 
  9995   Tue May 27 11:58:45 2014 JenneUpdateElectronicsAmplifier removed from BeatX pathSorry, I had been in a hurry when I worked
on this last week, and again when I wrote
the elog, but I wanted to at least put in
 ALS_outofloop_27May2013.pdf 
  9996   Tue May 27 21:48:31 2014 JenneUpdateLSCX green broadband PD not working???!?Grr.  I am very frustrated. 
After lunch I redid alignment for both X
and Y green systems (Yarm both at the end
 ALS_outofloop_27May2013_2.pdf 
  9997   Tue May 27 22:29:17 2014 JenneUpdatePSLPSL making noisesAlso, while I was working on the PSL table,
I heard noise that sounded like a bearing
rolling around.  I suspected the HEPAs,
  
  9998   Wed May 28 11:55:16 2014 SteveUpdatePSLPSL Innolight controller fan is noisy

    

       
            
 2WinnoRFan.jpg 
  9999   Wed May 28 14:13:06 2014 manasaUpdateIOOMC relocked

    

       
            
  
  10000   Wed May 28 17:51:48 2014 manasaUpdateLSCX green broadband PD NOT working

    

       
            
  
  10001   Wed May 28 19:15:38 2014 KojiUpdateLSCX green broadband PD NOT workingIf the PD is the suspect, just pull it
from the table and bring it to the PD testing
setup.
  
  10002   Thu May 29 02:16:02 2014 ericqUpdateLSCHigh Bandwidth power recycled Yarm. I'll put more detail in the morning, but
I was able to get the PRM/ITMY/ETMY coupled
cavities locked with 32kHz bandwidth using
 quickOLTFs.pdf 
  10003   Thu May 29 08:43:34 2014 manasaUpdatePEMAnt season already inAnt season has set in. I spotted and killed
 a few ants around the optics
  
  10004   Thu May 29 14:40:17 2014 KojiUpdateLSCHigh Bandwidth power recycled Yarm. Wait. It is not so clear.
Do you mean that the IFO was locked
with REFL11I for the first time? 
  
  10005   Thu May 29 15:33:55 2014 ericqUpdateLSCHigh Bandwidth power recycled Yarm.

    

       
            
  
  10006   Fri Jun 6 14:56:09 2014 ericqUpdateelogAaaaaand we're back!ELOG is back up and running after last
Friday's disk-crash-a-thon. SVN is still
a work in progress. Jenne and I are now restarting
  
  10007   Mon Jun 9 09:41:06 2014 steveUpdatesafetysafety training2014 surf students Nichin and Akhil received
40m specific basic safety training last week.
 2014surfs.jpg 
  10008   Mon Jun 9 09:51:11 2014 Sai AkhilUpdateElectronicsFrequency Error Measurement of UFC-6000 RF Frequency Counter Motivation: 
 
To test the
precision of Mini-Circuits Model UFC-6000
 Data_and_Script_Files.zipError_Measurement_FC.pdfError_freq.jpg 
  10010   Mon Jun 9 11:42:00 2014 JenneUpdateCDSComputer statusCurrent computer status:
All fast machines except c1iscey
are up and running. I can't ssh to c1iscey,
  
  10011   Mon Jun 9 12:19:17 2014 ericqUpdateCDSComputer status

    

       
            
  
  10013   Mon Jun 9 19:02:34 2014 Evan, EricUpdateComputer Scripts / ProgramsSVN is backThe SVN Apache server was not happy trying
to read from /cvs/cds/caltech/svn/;
it complains "Value too large for defined
  
  10015   Mon Jun 9 22:26:44 2014 rana, zachUpdateCDSSLOW controls recovery All of the SLOW computers were
in limbo since the fileserver/nameserver
change, but me and Zach brought them back.
  
  10016   Mon Jun 9 22:40:36 2014 JenneUpdateCDSFast front end computers upRana
and I now seem to have the fast front end
computers (c1lsc, c1sus, c1ioo, c1iscex and
  
  10017   Mon Jun 9 23:08:58 2014 JenneUpdateIOOMC board checkoutRana mentioned this in his elog entry re:
SLOW computer recovery, but I want to highlight
it:
  
  10018   Tue Jun 10 09:25:29 2014 JamieUpdateCDSComputer status: should not be changing namesI really think it's a bad   
  10020   Tue Jun 10 12:49:46 2014 AkhilUpdateComputer Scripts / ProgramsInterfacing UFC-6000 with Raspberry Pi completed Goal:
 To interface the Mini Circuits
RF Frequency Counter(FC) Model UFC-6000 with
 Interfacing_Script.zip 
  10023   Wed Jun 11 08:57:49 2014 SteveUpdatePEM air cond maintenance tomorrow morning

    

       
            
  
  10025   Wed Jun 11 14:36:57 2014 JenneUpdateCDSSLOW controls recovery 
 I have brought back c1auxex
and c1auxey.  Hopefully this elog
  
  10026   Wed Jun 11 14:41:11 2014 JenneUpdateSUSBurt restored c1scxepicsETMX had default 1's for gains, 0's for
matrix elements, etc., so I did a burt restore
to May 25th, 2pm, which was a few days before
  
  10027   Wed Jun 11 15:57:18 2014 JenneUpdateCDSNote on cables for talking to slow computersWe have (now) in the lab 2 cables that
are RJ45-DB9.  The gray one is LIGO-made,
while the blue one is store-bought.  
 06111401.PDF 
  10028   Wed Jun 11 16:01:31 2014 SteveUpdateCDSc1Vac1 and c1vac2 rebooted

    

       
            
 beforeReboot.png 
  10030   Thu Jun 12 10:41:58 2014 SteveUpdatePSLPMC-T trend of 4 years

    

       
            
 4yTrend2Winno.png 
  10033   Thu Jun 12 15:31:47 2014 JamieUpdateCDSNote on cables for talking to slow computers

    

       
            
  
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