40m QIL Cryo_Lab CTN SUS_Lab TCS_Lab OMC_Lab CRIME_Lab FEA ENG_Labs OptContFac Mariner WBEEShop
  40m Log, Page 61 of 344  Not logged in ELOG logo
IDdown Date Author Type Category Subject Text Attachments
  14287   Fri Nov 9 22:24:22 2018 JonOmnistructure Wiring of Vacuum Acromag Chassis CompleteWiring of the power, Ethernet, and indicator
lights for the vacuum Acromag chassis is
complete. Even though this crate will only
 IMG_2987.jpgIMG_2985.jpgIMG_2986.jpg 
  14286   Fri Nov 9 15:00:56 2018 gautamUpdateIOONo IFO beam as TT1 UL hijacked for REFL55 checkThis
problem resurfaced. I'm doing the
debugging.
 REFL55_wht_chk.png 
  14285   Wed Nov 7 23:07:11 2018 gautamUpdateLSCDRMI locking recoveredI had some
success today. I hope that the tweaks I made
will allow working with the DRMI during the
 Screenshot_from_2018-11-07_23-05-58.pngSRCL2MICH_crosscpl.pdfPRCangularCoh_rot.pdf 
  14284   Wed Nov 7 19:42:01 2018 gautamUpdateGeneralIFO checkup and DRMI locking prepEarlier today, I rebooted a few unresponsive
VME crates (susaux, auxey).

The IMC has been unhappy for a
  
  14283   Wed Nov 7 19:20:53 2018 gautamUpdateComputersPaola Battery ErrorThe VEA vertex laptop, paola,
has a flashing orange indicator which I take
  
  14282   Wed Nov 7 19:17:18 2018 JonOmnistructure modbusIOC is running on c1vac replacementToday I finished setting up the server
that will replace the c1vac1/2 machines.
I put it on the martian network at the unassigned
  
  14281   Wed Nov 7 08:32:32 2018 SteveUpdateVACc1vac1 FAIL lights on (briefly)...checkedThe vacuum and MC are OK




 Vac_MC_OK.png 
  14280   Wed Nov 7 05:16:16 2018 yukiUpdateComputer Scripts / Programsarm loss measuremenentsPlease check your data file and compare
with those Johannes made last year.
I think the power in your data file may have
  
  14279   Tue Nov 6 23:19:06 2018 gautamUpdateVACc1vac1 FAIL lights on (briefly)Jon and I stuck a extender card into the
eurocrate at 1X8 earlier today (~5pm PT),
to see if the box was getting +24V DC from
 Screenshot_from_2018-11-06_23-18-23.pngScreenshot_from_2018-11-06_23-19-26.png 
  14278   Tue Nov 6 19:41:46 2018 JonOmnistructure c1vac1/2 replacementThis afternoon I started setting up the
Supermicro 5017A-EP that will replace c1vac1/2.
Following Johannes's procedure in 
  
  14277   Tue Nov 6 19:02:35 2018 aaronUpdateIOOIMC problematicThat was likely me. I had recentered the
beam on the PD I'm using for the armloss
measurements, and I probably moved
 181106_MCTRANS.jpg 
  14276   Tue Nov 6 15:32:24 2018 SteveUpdatePSLMC_TransmittedI tried to plot a long trend MC Transmitted
today. I could not get farther than
2017
 MC_Trans.png 
  14275   Tue Nov 6 15:23:48 2018 gautamUpdateIOOIMC problematicThe
IMC has been misbehaving for the last 5 hours.
 MCwonky.png 
  14274   Tue Nov 6 10:19:26 2018 aaronUpdateComputer Scripts / Programsarm loss measuremenentsI'm checking out the data this morning,
running armloss_AS_calc.py using the parameters
  
  14273   Tue Nov 6 10:03:02 2018 SteveUpdateElectronicsContec board foundThe Contec test board with Dsub37Fs was
on the top shelf of E7
 DSC01836.JPG 
  14272   Tue Nov 6 09:45:32 2018 aaronMetaphysicsTreasureZojirushi is deadNew
all organic machine.
  
  14271   Mon Nov 5 15:55:39 2018 SteveMetaphysicsTreasureZojirushi is deadWe
have no coffee machine.

We
 zoji.JPG 
  14270   Mon Nov 5 13:52:18 2018 aaronUpdateComputer Scripts / Programsarm loss measuremenentsAfter running this script Friday night,
i noticed Saturday that the data hadn't
saved. Scrolling up inthe terminal, I couldn't
  
  14269   Fri Nov 2 19:25:16 2018 gautamUpdateComputer Scripts / Programsloss measurementsSome facts which should be considered when
doing this measurement and the associated
uncertainty:
  
  14268   Fri Nov 2 16:42:31 2018 aaronUpdateComputer Scripts / Programsarm loss measuremenentsI'm continuing the arm loss measurements
Yuki was making. I'm first familiarizing
myself with the procedures for the measurement
  
  14267   Fri Nov 2 12:07:16 2018 ranaUpdateCDSNDScopehttps://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=44971

Let's install Jamie's new
Data Viewer
  
  14266   Fri Nov 2 10:24:20 2018 SteveUpdatePEMroof cleaningPhysical plan is cleaning our roof and
gutters today.
  
  14265   Fri Nov 2 09:47:57 2018 SteveMetaphysicsTreasureZojirushi is dead     It took at least
ten years to rust away. 
 DSC01773.JPGzoji.JPG 
  14264   Wed Oct 31 17:54:25 2018 gautamUpdateVACCC1 hornet power connection restoredSteve reported to me that the CC1 Hornet
gauge was not reporting the IFO pressure
after some cable tracing at EX. I found that
 cc1_Hornet.png 
  14263   Thu Oct 25 16:17:14 2018 SteveUpdatesafetysafety trainingChub Osthelder
received 40m specific basic safety traning
today.
  
  14262   Mon Oct 22 15:19:05 2018 SteveUpdateVACMaglev controller servicedGautam & Steve,

Our controller is back with Osaka
maintenace completed. We swapped it in this
 our_controller_is_back.png 
  14261   Thu Oct 18 00:27:37 2018 KojiUpdateSUSSUS PD Whitening board inspection[Gautam, Koji]

As a part of the preparation for
the replacement of c1susaux with Acromag,
 43.png 
  14260   Wed Oct 17 20:46:24 2018 yukiConfigurationASCY end table upgrade planTo do for Green Locking in YARM:

The auto-alignment servo should
be completed. This servo requires many parameters
  
  14259   Wed Oct 17 09:31:24 2018 SteveUpdatePSLmain laser offThe main laser went off when PSL doors
were opened-closed. It was turned back on
and the PSL is locked.
 Inno2wFlipped_off.png 
  14258   Tue Oct 16 00:44:29 2018 yukiUpdateComputer Scripts / Programsloss measurementsThe scripts for measuring armloss are in
the directory "/opt/rtcds/caltech/c1/scripts/lossmap_scripts/armloss_scope".


armloss_derefl_asdcpd_scope.py:
  
  14257   Mon Oct 15 20:11:56 2018 yukiConfigurationASCY end table upgrade planFinal Procedure Report for Green Locking
in YARM:

Purpose
  
  14256   Mon Oct 15 13:59:42 2018 SteveUpdateVACdrypump replacedSteve & Bob,

Bob removed the head cover from
the housing to inspect the condition of the
 drypump_swap.png 
  14255   Mon Oct 15 12:52:54 2018 yukiUpdateComputer Scripts / Programsadditional comments


Quote:


  
  14254   Mon Oct 15 10:32:13 2018 yukiUpdateComputer Scripts / Programsloss measurementsI used these values for measuring armloss:


Transmissivitity of ITM
= 1.384e-2 * (1 +/- 1e-2) 
Transmissivitity
 XARM_20181015_1500.pdfYARM_20181015_1500.pdf 
  14253   Sun Oct 14 16:55:15 2018 not gautamUpdateCDSpianosa upgradeDASWG is not what we want to use for config;
we should use the K. Thorne LLO
instructions, like I did for ROSSA.
  
  14251   Sat Oct 13 20:11:10 2018 yukiUpdateComputer Scripts / Programsloss measurements


Quote:


  
  14248   Fri Oct 12 20:20:29 2018 yukiUpdateComputer Scripts / Programsloss measurementsI ran the script for measuring arm-loss
and calculated rough Y-arm round trip loss
temporally. The result was 89.6ppm. (The
  
  14247   Fri Oct 12 17:37:03 2018 SteveUpdateVACpressure gauge choices We want to measure the pressure gradient
in the 40m IFO

Our old MKS cold cathodes are out
  
  14245   Fri Oct 12 12:29:34 2018 yukiUpdateComputer Scripts / Programsloss measurementsWith Gautam's help, Y-arm was locked.
Then I ran the script "armloss_dcrefl_asdcpd_scope.py"
which gets the signals from oscilloscope.
  
  14244   Fri Oct 12 08:27:05 2018 SteveUpdateVACdrypumpGautam and Steve,

Our TP3 drypump seal is at 360
mT [0.25A load on small turbo]  after
 forepump.png 
  14243   Thu Oct 11 13:40:51 2018 yukiUpdateComputer Scripts / Programsloss measurements


Quote:


  
  14241   Wed Oct 10 12:38:27 2018 yukiConfigurationLSCAll hardware was installedI connected DAC - AIboard - PZTdriver -
PZT mirrors and made sure the PZT mirrors
were moving when changing the signal
  
  14240   Tue Oct 9 23:03:43 2018 yukiConfigurationLSCYarm Green locking was recovered[ Yuki, Gautam, Steve ]

To align the green beam in Y-end
these hardware were installed:
 Pic_1Y4.jpgPic_PZTcable.jpg 
  14239   Tue Oct 9 16:05:29 2018 gautamConfigurationASCc1tst deleted, c1asy deployed.Setting up c1asy:


Backed up old c1tst.mdl
as c1tst_old_bak.mdl in /opt/rtcds/userapps/release/cds/c1/models
Copied
 CDSoverview_ASY.png 
  14238   Mon Oct 8 18:56:52 2018 gautamConfigurationASCc1asx filter coefficient file missingWhile pointing Yuki to the c1asx servo
system, I noticed that the filter
file for c1asx is missing in the usual chans
  
  14237   Mon Oct 8 00:46:35 2018 yukiConfigurationASCY-end table upgrade


Quote:


  
  14236   Sun Oct 7 22:30:42 2018 yukiConfigurationLSCYarm Green locking was recoveredI finished installation of optics in the
Y-end and recovered green locking. Current
ALS-TRY_OUTPUT is about 0.25, which is lower
 Pic_NewLayout1007.jpgYendGreenModeMatching.zip 
  14235   Sun Oct 7 16:51:03 2018 gautamConfigurationLSCYarm triggering changedTo facilitate Yuki's alignment of the
EY green beam into the Yarm cavity, I have changed
  
  14234   Fri Oct 5 22:49:22 2018 yukiConfigurationASCY-end table upgradeI designed a new layout. It has good mode-matching
efficiency, reasonable sensitivity to component
positions, good Gouy phase separation. I'm
  
  14233   Fri Oct 5 17:47:55 2018 gautamConfigurationASCY-end table upgradeWhat
about just copying the Xend
  
ELOG V3.1.3-