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ID Date Authorup Type Category Subject Text Attachments
  159   Thu Jun 7 00:23:11 2012 Aditi MittalMiscLIGO 3GSummary June 5 and June 6, 2012 June 5
-Discussed the actual project outline 
-Installed Comsol on the system
  
  161   Thu Jun 7 23:24:56 2012 Aditi MittalMiscLIGO 3GSummary June 7, 2012-Created a COMSOL model for variation of
temperature in two mass system.
-Used the above model for cryogenic
  
  163   Fri Jun 8 23:51:13 2012 Aditi MittalMiscLIGO 3GSummary June 8, 2012-Created a COMSOL model for cryogenically
shielded test mass with compensation plate.
-Analyzed the behavior of the model
  
  165   Mon Jun 11 20:53:31 2012 Aditi MittalMiscLIGO 3GSummary June 11, 2012 -Continued with the same cryogenic
model created and varied the length of  outer
shield and studied the temperature variation
  
  167   Thu Jun 14 05:37:30 2012 Aditi MittalMiscLIGO 3GSummary June 13, 2012-Derived formula for manual calculation
of temperature due to total influx.
-Compared the results by COMSOL and
  
  170   Mon Jun 18 23:42:39 2012 Aditi MittalMiscLIGO 3GCryogenic Shielding -Read about blue team design for
maximum power budget.
-Read third generation talks to get
  
  173   Thu Jun 21 11:16:27 2012 Aditi MittalMiscLIGO 3GSummary June 19 and 20, 2012 -Attented LIGO orientation meeting
and safety session.
-Prepared 3 week report
 temp_of_test_mass.png 
  175   Thu Jun 21 18:35:44 2012 Aditi MittalMiscLIGO 3GSummary June 21, 2012 -Updated 3 week progress report with
new additions and deletions.
-Attended LIGO lecture which was
  
  176   Tue Jun 26 17:55:44 2012 Aditi MittalMiscLIGO 3GSummary June 26, 2012- Discussed the further project with Dr.
Brooks.
-Tried to derive formula for the
  
  179   Fri Jun 29 15:51:24 2012 Aditi MittalMiscLIGO 3GSummary June 28 and 29, 2012 -Discussed the project outline for
next 6 weeks.
-made a write up for the tasks. (attached)
 pipelength_power.xlsx6week_plan.doc 
  1   Fri Nov 6 20:09:47 2009 AidanLaserLaserTest Does this work?   
  3   Mon Dec 28 14:48:29 2009 AidanComputingDAQVME crate has a "new" CPU - needs to be configured I installed a recycled VME crate in the
electronics rack. It currently has a Baja
4700E CPU card in it - and this needs to
 VME_boot_02.jpgVME_boot_01.JPGVME_boot_03.jpg 
  5   Tue Dec 29 17:50:57 2009 AidanComputingDAQVME crate has proper boot settingsWe fixed the start-up settings on the VME
crate to look for a TCS startup file on fb0.
The settings on the Baja 4700 are now:
 VME_tcs_boot_settings.jpg 
  6   Fri Jan 29 10:02:15 2010 AidanComputingDAQNew DAQ ordered On the advice of Ben Abbott, I've
ordered the Diamond Systems Athena II computer
w/DAQ, as well as an I/O board, solid state
  
  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 
  12   Mon Feb 8 17:44:38 2010 AidanElectronicsPre-amplifierreplace Pot with fixed Resistor

    

       
            
  
  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 
  17   Mon Apr 12 08:55:37 2010 AidanComputingHartmann sensorEDT frame grabber is here The EDT PCIe4 DV C-Link frame grabber
arrived this morning. There is a CD of drivers
and software with it that I'll back up to
  
  18   Mon Apr 12 17:25:01 2010 AidanElectronicsHartmann sensorFiber-Camera Link demonstration I installed the EDT PCIe4 DV C-Link
frame grabber in a spare Windows XP PC and
connected the Dalsa 1M60 camera directly
 hartmann_sensor.JPGFiber_Camera_Link_1.jpgFiber_Camera_Link_3.jpg 
  20   Tue Apr 20 18:05:24 2010 AidanComputingHartmann sensorImages off the Dalsa Camera in CentOS I installed CentOS on the machine
with the EDT frame-grabber. I then installed
the frame-grabber software from the CD.
 Screenshot-PCI_DV_Display.pngScreenshot-PCI_DV_Display-1.png-opt-EDTpdv.png 
  21   Wed Apr 21 06:49:51 2010 AidanComputingFrame GrabberInstalling CentOS 5.3 and the EDT frame-grabber - Part 1Yesterday, I installed CentOS 5.3 on the
Gateway GT5482 machine that housed the EDT
frame-grabber.
  
  23   Thu Apr 22 08:20:51 2010 AidanComputingHartmann sensorInstalled MATLAB and Windows XP Virtualization on Hartmann machineI installed a Windows XP virtualization
on the Hartmann machine. It can be accessed
from the desktop, or by running 
  
  24   Thu Apr 22 08:22:18 2010 AidanComputingFrame Grabberfrom the manual install.pdf


   
        
            
  
  25   Mon May 3 17:42:20 2010 AidanComputingEPICSEPICS install by AlexAlex Ivanov came in on Friday and demonstrated
his EPICS kung-fu. His EPICS knig-fu is strong.
We fixed the IP address of the Hartmann
 history.txthistory_root.txt 
  26   Mon May 3 17:43:48 2010 AidanComputingFrame GrabberSuccessful image capture with EDT frame grabberI noticed that when i ran /opt/EDTpdv/camconfig
and selected camera 331, which appeared to
 20100503_dalsa1m60_configuration_notes.txt2010-05-03_dalsa1m60_image_test_pattern_and_spots.tif2010-05-03_dalsa1m60_image_test_pattern_right_side.tifdalsa_1m60.cfg 
  27   Tue May 4 09:18:15 2010 AidanComputingHartmann sensorAdded aliases and icons for EPICS commands and dataviewer etc. to hartmannI updated the .bashrc file in controls@hartmann
to include aliases for the ezca EPICS commands
and a few others. Details shown below:
  
  28   Tue May 4 10:30:07 2010 AidanComputingHartmann sensorEPICS and MEDM screen for Hartmann sensorI added the Dalsa 1M60 temperature measurements
to EPICS. The break down is as follows:
 Screenshot-C4HWS_medm_21.adl_(edited).pngScreenshot-StripTool_Graph_Window.pngHWS.dbHWS.cmdread_dalsa_temperature_write_to_epics.m 
  29   Tue May 4 13:35:13 2010 AidanComputingHartmann sensorHartmann temperature channels in frame builder I've added the digitizer and sensor
board temperature readings from the HWS to
the frames. This was done in the following
  
  30   Wed May 5 09:04:01 2010 AidanComputingHartmann sensorAdded /home/controls/scripts/modules directory to PYTHONPATH on hartmann I added the following line to ~/.bashrc
 
  
  31   Wed May 5 18:45:51 2010 AidanComputingHartmann sensorPython code to interface the Dalsa1M60 and export the temperature to EPICSPython script
I wrote a Python script, ~/scripts/dalsa_to_epics.py
 dalsa_to_epics.pyVerifyTemperature.pydalsa_1m60.cfg 
  32   Thu May 6 10:34:38 2010 AidanComputingHartmann sensorEPICS and MEDM screen for Hartmann sensor - part 2I added the camera parameters to EPICS
and the MEDM screen. These are available
as channels now in EPICS and eventually there
 dalsa_to_epics.pyGetCameraParameters.pyHWS.dbC4TCS.ini 
  33   Thu May 6 12:32:11 2010 AidanComputingHartmann sensordalsa_to_epics Python script crashed ...Here's the error:
 
  
  35   Tue May 11 10:32:00 2010 AidanComputingHartmann sensorPeak detection and centroiding code - reviewThis looks really efficient! However, I
think there's a systematic error in the calculation.
I tested it on some simulated data and it
 test_centroid_code.m 
  36   Thu May 13 16:54:46 2010 AidanComputingHartmann sensorRunning MATLAB programs in C on CentOS - only use R2008b for less hassle After much effort trying to get a
MATLAB routine to compile in C I discovered
the following pieces of information.
  
  37   Mon May 17 19:41:13 2010 AidanComputingFrame GrabberC code that calls MATLAB engine and centroiding algorithmsThis is an amended version of simple_take.c.
 
 simple_hartmann.ccentroid_image.mget_defocus.mbuild_simple_hartmann.sh 
  38   Tue May 18 09:33:44 2010 AidanComputingEPICSAdded defocus and other Hartmann sensor channels to EPICS and DAQ I've added the following channels
to the HWS softIoc in /cvs/cds/caltech/target/softIoc/HWS.db
  
  39   Thu May 20 08:20:54 2010 AidanComputingHartmann sensorCentroiding algorithm and code to generate simulated data Here's a copy of an email I distributed
today that describes the centroid and simulation
code I wrote.
 test_spot_generation_and_centroiding.mgenerate_simulated_spots.mcentroid_image.m 
  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 
  42   Mon May 24 19:17:32 2010 AidanLaserHartmann sensorReplaced Brass Plate with Invar Hartmann PlateI just replaced the brass Hartmann plate
with the Invar one. The camera was off during
the process but has been turned on again.
  
  43   Wed May 26 06:47:02 2010 AidanLaserSLEDSwitched off SLED - 6:40AM    
  44   Wed May 26 14:58:04 2010 AidanMiscHartmann sensorHartmann sensor cooling fins added14:55 -  Mindy stopped by with the
copper heater spreaders and the cooling fins
for the Hartmann sensor. We've set them all
 HWS_CONFIG1.jpg 
  45   Thu May 27 08:25:37 2010 AidanElectronicsHartmann sensorHartmann sensor cooling fins added - base piece removed 8:10AM - I removed the base plate
from the Hartmann sensor. I want to know
what steady-state temperature the HWS achieves
 HWS_CONFIG2.jpg 
  46   Thu May 27 13:18:51 2010 AidanElectronicsHartmann sensorRemoved Cooling fins from Hartmann sensorI removed the cooling fins from the Hartmann
sensor to see what steady-state temperature
it reached without any passive cooling elements.
 HWS_CONFIG3.jpg 
  47   Thu May 27 15:42:06 2010 AidanElectronicsHartmann sensorHartmann sensor with just the base pieceI switched in just the base piece of the
Hartmann sensor. The cooling fins are removed.
I bolted the camera securely to the base
 HWS_CONFIG4.jpg 
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