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ID Date Author Type Categoryup Subject Text Attachments
  141   Sun Apr 24 18:31:18 2011 AidanComputingNetwork architectureAdded hosts and network drives on TCS machinesUnder
edit ...
I added the names of the network
  
  142   Mon Apr 25 16:28:27 2011 Aidan, JoeComputingNetwork architectureFixed problem network drive fb1:/cvs on Ubuntu & CentOS machinesWith Joe's help we fixed the failure of
princess_sparkle to mount the
fb1:/cvs directory when relying
  
  182   Thu Dec 15 14:02:01 2016 AidanComputingNetwork architectureCorrect network settings for Ubuntu 14 in /etc/network/interfacesThese settings work to get a computer onto
the TCS/ATF network.
 IMG_8148.JPG 
  183   Fri Dec 16 10:41:33 2016 AidanComputingNetwork architectureCorrect network settings for Ubuntu 14 in /etc/network/interfacesSpelt out in a searchable fashion:

auto <portname>

iface <portname> inet
  
  203   Tue Nov 14 19:08:00 2017 Jon RichardsonComputingNetwork architectureRsync Server for Automatic LDAS BackupsI implemented an access point for LDAS
to pull data from the TCS lab EPICS frame
archive (fb4:/frames) via rsync. The setup
  
  223   Fri Oct 26 09:49:47 2018 AidanMiscOpticsStarting 80C cure of epoxyI've started an 80C cure of two materials
bonded by EPOTEK 353ND. The objective is
to see (after curing) how much the apparent glass
 IMG_7054.jpg 
  234   Wed Jul 24 16:25:13 2019 Edita BytyqiLab InfrastructureOpticsUpdated 2-lens setupThe previous 2-lens setup focused the beam
to a tight spot, however due to the divergence
angle of the laser beam, a significant amount
 20190724_161926.jpg 
  236   Mon Jul 29 18:53:16 2019 Edita BytyqiLab InfrastructureOpticsMounted Reflector and HeaterSince we set up the 2-lens system focusing
the laser beam to the CCD, the next step
was to mount the spherical reflector (31
 20190729_185214.jpg20190729_185156.jpg20190729_185153.jpg20190729_185139.jpg20190729_185112.jpg 
  237   Thu Aug 1 15:20:39 2019 Edita BytyqiLab InfrastructureOpticsReflector Mount and DC SupplyYesterday, we were able to take some data
using the 120 V DC power supply. The reflectors
cut at the focal point and radius were both
 20190731_170920.jpg20190801_145836.xcf20190801_145836.jpg20190801_150635.jpg20190801_145842.jpg 
  153   Thu Sep 1 15:51:38 2011 AidanLaserOrderingAccess Lasy50 50W laser arrived. The 50W Access Laser is now in the
lab. We need to wire up the interlock to
the laser, plumb the chiller lines to the
  
  10   Fri Feb 5 12:42:19 2010 SteveElectronicsPre-amplifierChanges to boardTest entry   
  11   Mon Feb 8 10:45:50 2010 Steve O'ConnorElectronicsPre-amplifierreplace Pot with fixed Resistor 
  
  12   Mon Feb 8 17:44:38 2010 AidanElectronicsPre-amplifierreplace Pot with fixed Resistor

    

       
            
  
  104   Tue Jan 25 16:38:16 2011 AidanElectronicsPre-amplifierL1 TCSY ISS Board transfer function I measured the AC and DC channel
transfer functions of the eLIGO L1 TCSY ISS
board for PD1 and PD2. The gain is quite
 L1TCS_ISS_boards_transfer_functions.pdfSRS003.78DSRS004.78DSRS005.78DSRS006.78D 
  7   Thu Feb 4 14:05:59 2010 AidanElectronicsRing HeaterRing heater transfer function measurement 240mHz-5HzI've been trying to measure the ring heater
transfer function (current to emitted power)
by sweeping the supply voltage and measuring
  
  8   Thu Feb 4 15:26:37 2010 AidanElectronicsRing HeaterRing heater transfer function measurement 240mHz-5Hz

    
        
  
  9   Thu Feb 4 19:45:56 2010 AidanMiscRing HeaterRing heater transfer function - increasing collection areaI mounted the thinner Aluminium Watlow
heater inside a 14" long, 1" inner
diameter cylinder. The inner surface was
 low-emissivity-tube.jpg 
  13   Thu Feb 11 18:04:08 2010 AidanLaserRing HeaterRing heater time constantI've been looking to see what the time
constant of the ring heater is. The attached
plot shows the voltage measured by the photodiode
  
  14   Thu Feb 11 21:46:23 2010 AidanElectronicsRing HeaterRing heater time constant measurement - start timeAfter leaving the ring heater off for several
hours I turned on a 40V, 0.2A supply at a
gps time of 949 988 700
  
  15   Fri Feb 12 11:39:28 2010 AidanElectronicsRing HeaterRing heater transfer functionI applied a step function to the silver
WATLOW heater and measured the response with
the photodiode. The power spectrum of the
 watlow_heater_transfer_fn.jpg 
  16   Fri Feb 12 21:00:06 2010 AidanElectronicsRing HeaterRing heater step function response - time seriesHideously slow internet at airport is making
me write a brief entry. This is the times
series of the hesilver watlow heater radiative
 silver_watlow_heater_step_function_response_2010-02-12.pdf 
  112   Thu Feb 24 14:20:55 2011 AidanMiscRing HeateraLIGO H2 Ring Heater Pics Here are some pictures of the ring
heater segments destined for the H2 Y-arm
this year.
 aLIGO_Ring_Heaters.zip 
  239   Fri Aug 9 20:33:11 2019 JonElectronicsRing HeaterPower-regulated heater ready to useDespite some considerable time spent,
I was not able to get the Omega SCR controllers
working. The first unit definitely arrived
 IMG_3576.jpgIMG_3577.jpg 
  40   Thu May 20 10:44:13 2010 AidanElectronicsSLEDQPhotonics 980nm source powerdV = 0.385V
Responsivity= 0.65A/W
Transimpedance = 1.5E4 V/A
  
  41   Thu May 20 17:08:36 2010 AidanElectronicsSLEDSLED module - and driver - LIGO D1000892 - and Hartmann sensorVerified that the test-point for the current
limit pot on the driver (Wavelength Electronics
- LDTC 0520) was at 0.5V. Driver is set to
 2010-05-20_hartmann_image_and_located_spot.jpg 
  43   Wed May 26 06:47:02 2010 AidanLaserSLEDSwitched off SLED - 6:40AM    
  75   Sun Jul 25 16:24:56 2010 AidanComputingSLEDSuperlum SLED test integrated with DAQ - new channel names I added some new channels to the
Athena DAQ that record the diagnostic channels
from the Superlum SLED.
  
  76   Mon Jul 26 09:42:30 2010 AidanComputingSLEDLong term test on SLED started - Day 0 I set up the SLED to test its long
term performance. The test began, after a
couple of false starts, around 9:15AM this
 SLED_superlum_long_term_test_0001A.pdfSLED_superlum_long_term_test_0001B.pdf 
  79   Tue Jul 27 08:31:10 2010 AidanElectronicsSLEDLong term SLED test - Day 1 The measurement from the on-board
PD of the Superlum SLED seems to be falling.
This effect started around 5PM last night
 SLED_superlum_long_term_test_0002A.pdf 
  80   Wed Jul 28 18:32:12 2010 AidanElectronicsSLEDSLED long term test - Day 2Here's the data from the last 2 1/2 days
of running the SLED. The decrease in photo-current
measured by the on-board photo-detector is
 SLED_superlum_long_term_test_0003A.pdf 
  81   Thu Jul 29 10:09:19 2010 AidanElectronicsSLEDSLED long term test - Day 2I've attached the Acceptance Test Report
data from SUPERLUM for this SLED. I've also
determined the expected percentage decrease
 superlum_SLED_ATR.pdf 
  87   Sat Jul 31 11:54:20 2010 AidanComputingSLEDSLED Test Day 5 - Re-tuned current set-point control voltageMain Points

    Re-set SLED current set-point
control voltage to 0.111V
    SLED
  
  89   Mon Aug 9 10:58:37 2010 AidanLaserSLEDSLED 15-day trend Here's a plot of the 15-day output
of the SLED.
Currently there is an 980nm FC/APC
 SLED_superlum_long_term_test_0005A_annotated_15-day_result.pdf 
  59   Fri Jun 25 10:47:08 2010 AidanMiscaLIGO ModelingUploaded aLIGO axicon+ITM COMSOL model to the 40m SVNI added a COMSOL model of the aLIGO ITM
being heated by an axicon-formed annulus
to the 40m SVN. The model assumes a fixed
 aLIGO_axicon_spacing_post-magnification_optimization.jpg 
  60   Fri Jun 25 10:59:43 2010 AidanMiscaLIGO ModelingUploaded aLIGO axicon+ITM COMSOL model to the 40m SVNHere are the results in the annulus thickness
vs annulus diameter space ...

 Screen_shot_2010-06-25_at_11.01.38_AM.png 
  157   Tue Jun 5 17:25:43 2012 Alex MauneyMiscaLIGO Modeling6/5/12 Daily Summary- Had a meeting to talk about the basics
of LIGO (esp. TCS) and discuss the project
- Created COMSOL model for the test
  
  158   Wed Jun 6 16:54:09 2012 Alex MauneyMiscaLIGO Modeling6/6/12 Daily Summary- Got access to and started working with
SIS on Rigel1
- Fixed SVN issues
  
  160   Thu Jun 7 16:50:16 2012 Alex MauneyMiscaLIGO Modeling6/7/12 Daily Summary- Created a COMSOL model with thermal deformations
- Added non-symmetrical heating to
cause astigmatism
  
  162   Fri Jun 8 16:36:47 2012 Alex MauneyMiscaLIGO Modeling6/8/12 Daily Summary- Tried to fix COMSOL error using the (ts)
module, ended up emailing support as the
issue is new in 4.3
  
  164   Mon Jun 11 17:11:01 2012 Alex MauneyMiscaLIGO Modeling6/11/12 Daily Summary- Fixed the (ts) model, got strange results
that indicate that the antisymmetric heating
mode is much more prominent than previously
  
  166   Wed Jun 13 16:36:14 2012 Alex MauneyMiscaLIGO Modeling6/12 and 6/13 Daily Summary- Realized that the strange deformations
that we were seeing only occur on the face
nearest the ring heater, and not on the face
  
  168   Thu Jun 14 16:51:03 2012 Alex MauneyMiscaLIGO Modeling6/14/12 Daily Summary- Plugged the output of the model with
uniform heating into SIS using both modification
of the radius of curvature, and direct importation
 SIS_Outputs.txtAssymetric_Heating_Line_Graph.png 
  169   Mon Jun 18 16:30:36 2012 Alex MauneyMiscaLIGO Modeling6/18/12 Daily Summary- Verified that the SIS output does match
satisfy the equations for Gaussian beam propagation
- Investigated how changing the amount
  
  171   Tue Jun 19 16:24:52 2012 Alex MauneyMiscaLIGO Modeling6/19/12 Daily Summary- Did more modeling for different levels
of heating and different mesh densities for
the SIS input.
  
  172   Wed Jun 20 16:44:58 2012 Alex MauneyMiscaLIGO Modeling6/20/12 Daily Summary- Attended a lot of meetings (Safety, LIGO
Orientation)
- Finished draft of week 3 report
 TS_model_deformation_line_graph_2W_10%.pngTS_model_deformation_line_graph_2W_10%_sym.pngTS_model_deformation_line_graph_2W_10%_antisym.pngTS_model_deformation_contour_graph_2W_10%.pngHTSM_model_deformation_contour_graph_2W_10%.png 
  174   Thu Jun 21 16:54:45 2012 Alex MauneyMiscaLIGO Modeling6/21/12 Daily Summary- Paper edits and more data generation
for the paper (lower resolution grid data)
- Attended a talk on LIGO
  
  177   Wed Jun 27 16:43:56 2012 Alex MauneyMiscaLIGO Modeling6/27/12 Daily SummaryPlan for building the model
- Find the fields that would be incident
on the beam splitter from each arm (This
  
  178   Thu Jun 28 16:27:37 2012 Alex MauneyMiscaLIGO Modeling6/28/12 Daily Summary- Finished the MatLab code that both combines
two fields and simulates the adjustment of
the beamsplitter to minimize the power out
  
  180   Mon Jul 9 16:54:17 2012 Alex MauneyMiscaLIGO Modeling7/9/12 SummaryMade a COMSOL model that can include CO2
laser heating, self heating, and ring heating
Figured out how to run SIS out of
  
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