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  40m Log, Page 31 of 341  Not logged in ELOG logo
ID Date Author Type Category Subjectup Text Attachments
  9780   Thu Apr 3 00:30:52 2014 JenneUpdateLSCAttempt at PRMI+2 arms[EricQ, Jenne]
We started out this evening by
locking the PRMI, on different REFL PDs,
  
  9781   Thu Apr 3 03:06:34 2014 JenneUpdateLSCAttempt at PRMI+2 arms[EricQ, Jenne]
Much more success later! 
We've had the arms locked on ALS
  
  9783   Thu Apr 3 18:09:54 2014 ericqUpdateLSCAttempt at PRMI+2 armsSo, here's the basic: "We reduced
the CARM offset and saw more TRY" plot. 
 offsetTRY.pdf2dhist.pdfpdh_trans.pdf 
  6736   Fri Jun 1 02:13:00 2012 JenneUpdateGreen LockingAttempt at Ygreen beat - failed[Yuta, Jenne]
We tried to find the Ygreen beat
note, with no success yet.  We calculate
  
  9821   Thu Apr 17 01:18:34 2014 JenneUpdateLSCAttempt at handing CARM to REFL11[Jenne, Koji]
This evening, Koji and I followed
the procedure from last night (elog
  
  9829   Fri Apr 18 12:53:54 2014 JenneUpdateLSCAttempt at handing CARM to REFL11: Time seriesSome time series data from Wednesday
night. 
Here is the first time we've gotten
 CARMin1_POPDC_TRX_1000sec_TRXwas1ct.pnglockloss_CARMoscillating.pnglockloss_CARMoscillating_2.png 
  897   Fri Aug 29 11:01:49 2008 josephbConfigurationComputersAttempt to change a channel gain in ICS-110BAs noted earlier by Rana, I was playing around
with the /cvs/cds/caltech/chans/daq/C1IOOF.ini
file with help from Rob.  I had made a backup
  
  8654   Thu May 30 10:40:59 2013 JamieConfigurationCDSAttempt to cleanup c1ioo ADC connectionsI have attempted to reconcile all of the
ADC connections to c1ioo.  Upon close
inspection, it appears that there was a lot
  
  922   Thu Sep 4 11:33:25 2008 josephb, Eric, JenneConfigurationComputersAttempt to increase gain for C1:PSL-ISS_INMONPD_F via 110BWe were attempting to increase the gain on
the channel C1:PSL-ISS_INMONPD_F in preparation
to do a scan of the PMC at very low input
  
  925   Thu Sep 4 16:24:56 2008 ranaConfigurationComputersAttempt to increase gain for C1:PSL-ISS_INMONPD_F via 110B[quote]We were attempting to increase the
gain on the channel C1:PSL-ISS_INMONPD_F
in preparation to do a scan of the PMC at
  
  11394   Tue Jul 7 23:26:19 2015 KojiUpdateCDSAttempt to list CDS issuesAs Jamie succeded to realize somewhat workable
condition of the 40m CDS, I tried to list
the obvious CDS issues so that we can attack
 burt.log.zip 
  9740   Wed Mar 19 21:37:45 2014 manasaSummaryLSCAttempt to lock PRMIsb with REFL165I&QI tried to
repeat Koji's PRMI lock using REFL165I/Q.
I was not able to lock PRMI stably. All I
  
  1035   Wed Oct 8 21:26:20 2008 YoichiUpdatePSLAttempt to replace the DC-DC converter (aborted)Rich, Steve, Yoichi

We opened the MOPA box and inspected our
 DCDC.JPGNPRO.JPG 
  14093   Fri Jul 20 22:53:15 2018 KojiUpdateASSAttempt to resurrect Yarm ASS [Koji Gautam]

We managed to realize stable
ASS configuration for Yarm. The transmission
 02.png 
  13040   Mon Jun 5 12:27:34 2017 jigyasaUpdateCamerasAttempt to run camera server Python codeWhile attempting
to execute the Python/Pylon code for the
camera server, camera_server.py, the compiler
  
  13041   Mon Jun 5 12:50:42 2017 jigyasaUpdateCamerasAttempt to run camera server Python codeI think there
might be a problem with the fact that
the installation of the various components
  
  13042   Mon Jun 5 15:04:33 2017 ranaUpdateCamerasAttempt to run camera server Python codeRight - we want to be compatible with new
version of the code, so instead of moving
the files to where the code wants them you
  
  13043   Mon Jun 5 18:40:12 2017 jigyasaUpdateCamerasAttempt to run camera server Python code[Gautam, Jigyasa]

This
evening, Gautam helped me resolve the
  
  11219   Wed Apr 15 02:26:41 2015 ericqUpdateLSCAttempted DRMI + ALS armsI spent some time tonight trying to revive
DRMI locking, with the arms held off on ALS. Not
much news, I haven't been able to get
  
  16577   Tue Jan 11 18:18:29 2022 AnchalSummaryBHDAttempted OSEM installation on AS1[Anchal, Paco, Yehonathan]

Connected in-cir cable to new flange
on ITMY Chamber
  
  8266   Mon Mar 11 10:20:36 2013 Max HortonSummaryComputersAttempted Smart UPS 2200 Battery ReplacementAttempted Battery Replacement on Backup
Power Supply in the Control Room: 
I tried to replace the batteries
 upsB.jpgupsBa.jpg 
  2517   Fri Jan 15 18:53:05 2010 josephb,peter,kojiUpdateComputersAttempted locking with Megatron replacing ETMY front endThis afternoon we attempted to lock the
interferometer using Megatron insteady of
the usual ETMY front end.
  
  12956   Fri Apr 28 18:01:56 2017 rebeccaUpdateCamerasAttempting to Load Camera ClientUsing /ligo/apps/linux-x86-64/camera/bin/camera_client.py
-c  /opt/rtcds/caltech/c1/scripts/GigE/SnapPy/L1-CAM-MC1.ini,
the Python script was able to run without
  
  12958   Fri Apr 28 22:50:35 2017 johannesUpdateCamerasAttempting to Load Camera ClientYou'll likely have to run camera_server.py
using the same ini file first before you
can use the client. Since the pylon installation
  
  12959   Sun Apr 30 13:24:00 2017 ranaUpdateCamerasAttempting to Load Camera ClientWe ought to put the camera software on
the shared disk; I don't think there's
any speed reasons that it needs to be local.
  
  2054   Mon Oct 5 18:34:26 2009 JenneUpdateAdaptive FilteringAttempts to take a TF of the OAF system[Jenne, Sanjit]
As per Matt's instructions in his
OAF document (elog
 OAF_TF_CORRexc_EMPHout_2.png 
  2058   Tue Oct 6 11:13:53 2009 JenneUpdateAdaptive FilteringAttempts to take a TF of the OAF system

    
        
  
  2061   Wed Oct 7 03:49:49 2009 ranaUpdateAdaptive FilteringAttempts to take a TF of the OAF system Here's a plot of the spectra of the
seismometers and MCL. The coherence shows
which axes are aligned right now: MC1_X is
 Untitled.png 
  2063   Wed Oct 7 07:42:55 2009 ranaUpdateAdaptive FilteringAttempts to take a TF of the OAF systemI remeasured
the OAF time delay using the OAF-TF template
  
  3801   Wed Oct 27 21:51:29 2010 SureshUpdatePSLAttenuation of PSL NPRO removedThe laser
power was attenuated to 40 mW yesterday for
ensuring that the power built up within the
  
  11943   Fri Jan 22 01:56:01 2016 ericqUpdateLSCAudio ALSXI hooked up the ALSX DFD output to the
fibox, and used the adjustable delay line
to set the phase properly. I recorded the
 ALSX.wav 
  1492   Thu Apr 16 17:48:00 2009 YoichiConfigurationComputer Scripts / ProgramsAutoDTTAs Peter mentioned in his entry on the last
night's locking, I imported AutoDTT from
Hanford.
  
  1494   Fri Apr 17 11:37:32 2009 YoichiConfigurationComputer Scripts / ProgramsAutoDTTIn order to get test point data with AutoDTT,
you have to pre-trigger test points you want
to use.
  
  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 
  12581   Wed Oct 26 16:06:01 2016 JohannesUpdateGeneralAutolocker maintenance[Gautam, Johannes]

The autolocker was acting up today,
Gautam traced it to EPICS channels ( namely
  
  9059   Fri Aug 23 21:01:38 2013 Alex ColeHowToElectronicsAutomated Photodetector Frequency Response System This post describes how to use the
Automated Photodetector Frequency Response
System.
  
  14539   Thu Apr 11 17:30:45 2019 JonUpdateSUSAutomated suspension testing with susPythonSummary

In anticipation of
needing to test hundreds of suspension
signals after the c1susaux upgrade, I've
  
  14542   Mon Apr 15 18:13:23 2019 ranaUpdateComputer Scripts / ProgramsAutomated suspension testing with susPythonif this gonna be general for everybody,
maybe it oughta be called IFOtest
(like the last incarnation that was tried
  
  13772   Thu Apr 19 20:41:09 2018 KojiConfigurationGeneralAux Laser LD dying? (AS port laser injection)I suspect
that the LD of the aux laser is dying.
- The max power we obtain from this
 Aux_laser_adj_Pout.pdfAux_laser_RIN.pdf 
  13781   Tue Apr 24 08:36:47 2018 johannesConfigurationGeneralAux Laser LD dying? (AS port laser injection)In September
2017 I measured ~150mW output power,
which was already kind of low. What are the
  
  12106   Thu May 5 04:05:03 2016 ericqUpdateLSCAux X PDH checksWe took an OLG measurement of the green
PDH loop. It seems consistent with past measurements.
I've added a trace for the the post-mixer
 nom_noise.pngnom_olg.png 
  8244   Wed Mar 6 18:51:07 2013 AnnalisaUpdateAlignmentAuxiliary laser installed for FSR and TMS measurement of the PRCWe want to measure the g-factor of the
PRC using the beat note of the main laser
with an auxiliary NPRO laser.
 IMG_3-6-13.JPG 
  8313   Tue Mar 19 20:24:56 2013 AnnalisaUpdateAuxiliary lockingAuxiliary laser on PSL table I moved the auxiliary laser from
the ITMY table to the PSL table and installed
all the optics (mirrors and lenses) to steer
  
  342   Wed Feb 27 22:05:03 2008 JohnUpdateLSCAuxiliary lockingA summary of the status of the auxiliary arm
locking effort.
  
  16341   Fri Sep 17 00:56:49 2021 KojiUpdateGeneralAwesomeThe
Incredible Melting Man!

 
  
  11509   Fri Aug 14 23:49:34 2015 KojiSummaryGeneralB&K Shaker fixedI fixed a shaker that was claimed to be
broken. I had to cut the rubber membrane
to open the head.
 IMG_1947.JPG 
  10009   Mon Jun 9 10:55:48 2014 NichinSummaryElectronicsBBPD D1002969-v8 transimpedence measurementMy SURF
week-1 work...
 PD_transimpedence_measurement.pngresults.pdfcode_and_data.zip 
  10012   Mon Jun 9 16:55:31 2014 KojiSummaryElectronicsBBPD D1002969-v8 transimpedence measurementHow is the modulation depth assumed in
the calculation?
If you don't know the modulation
  
  10058   Wed Jun 18 15:25:06 2014 NichinUpdateElectronicsBBPD Transimepedence plot Motivation:  BBPD.pngBBPD_readings_06-18-2014.zip 
  10087   Sat Jun 21 01:46:28 2014 NichinUpdateElectronicsBBPD Transimepedence plotSorry for
the late update Koji.
There
 BBPD_06-18-2014.pdfBBPD_readings_06-18-2014.zip 
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