| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
159
|
Thu Jun 7 00:23:11 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Cryogenic 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 Mittal | Misc | LIGO 3G | Summary June 19 and 20, 2012 | -Attented LIGO orientation meeting
and safety session.
-Prepared 3 week report |
|
|
175
|
Thu Jun 21 18:35:44 2012 |
Aditi Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Summary 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 Mittal | Misc | LIGO 3G | Summary June 28 and 29, 2012 | -Discussed the project outline for
next 6 weeks.
-made a write up for the tasks. (attached) |
|
|
1
|
Fri Nov 6 20:09:47 2009 |
Aidan | Laser | Laser | Test | Does this work? |
|
|
3
|
Mon Dec 28 14:48:29 2009 |
Aidan | Computing | DAQ | VME 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 |
|
|
5
|
Tue Dec 29 17:50:57 2009 |
Aidan | Computing | DAQ | VME crate has proper boot settings | We 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: |
|
|
6
|
Fri Jan 29 10:02:15 2010 |
Aidan | Computing | DAQ | New 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 |
Aidan | Electronics | Ring Heater | Ring heater transfer function measurement 240mHz-5Hz | I'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 |
Aidan | Electronics | Ring Heater | Ring heater transfer function measurement 240mHz-5Hz |
|
|
|
9
|
Thu Feb 4 19:45:56 2010 |
Aidan | Misc | Ring Heater | Ring heater transfer function - increasing collection area | I mounted the thinner Aluminium Watlow
heater inside a 14" long, 1" inner
diameter cylinder. The inner surface was |
|
|
12
|
Mon Feb 8 17:44:38 2010 |
Aidan | Electronics | Pre-amplifier | replace Pot with fixed Resistor |
|
|
|
13
|
Thu Feb 11 18:04:08 2010 |
Aidan | Laser | Ring Heater | Ring heater time constant | I'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 |
Aidan | Electronics | Ring Heater | Ring heater time constant measurement - start time | After 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 |
Aidan | Electronics | Ring Heater | Ring heater transfer function | I applied a step function to the silver
WATLOW heater and measured the response with
the photodiode. The power spectrum of the |
|
|
16
|
Fri Feb 12 21:00:06 2010 |
Aidan | Electronics | Ring Heater | Ring heater step function response - time series | Hideously slow internet at airport is making
me write a brief entry. This is the times
series of the hesilver watlow heater radiative |
|
|
17
|
Mon Apr 12 08:55:37 2010 |
Aidan | Computing | Hartmann sensor | EDT 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 |
Aidan | Electronics | Hartmann sensor | Fiber-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 |
|
|
20
|
Tue Apr 20 18:05:24 2010 |
Aidan | Computing | Hartmann sensor | Images 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. |
|
|
21
|
Wed Apr 21 06:49:51 2010 |
Aidan | Computing | Frame Grabber | Installing CentOS 5.3 and the EDT frame-grabber - Part 1 | Yesterday, I installed CentOS 5.3 on the
Gateway GT5482 machine that housed the EDT
frame-grabber. |
|
|
23
|
Thu Apr 22 08:20:51 2010 |
Aidan | Computing | Hartmann sensor | Installed MATLAB and Windows XP Virtualization on Hartmann machine | I 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 |
Aidan | Computing | Frame Grabber | from the manual install.pdf |
|
|
|
25
|
Mon May 3 17:42:20 2010 |
Aidan | Computing | EPICS | EPICS install by Alex | Alex 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 |
|
|
26
|
Mon May 3 17:43:48 2010 |
Aidan | Computing | Frame Grabber | Successful image capture with EDT frame grabber | I noticed that when i ran /opt/EDTpdv/camconfig
and selected camera 331, which appeared to |
|
|
27
|
Tue May 4 09:18:15 2010 |
Aidan | Computing | Hartmann sensor | Added aliases and icons for EPICS commands and dataviewer etc. to hartmann | I 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 |
Aidan | Computing | Hartmann sensor | EPICS and MEDM screen for Hartmann sensor | I added the Dalsa 1M60 temperature measurements
to EPICS. The break down is as follows:
|
|
|
29
|
Tue May 4 13:35:13 2010 |
Aidan | Computing | Hartmann sensor | Hartmann 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 |
Aidan | Computing | Hartmann sensor | Added /home/controls/scripts/modules directory to PYTHONPATH on hartmann | I added the following line to ~/.bashrc
|
|
|
31
|
Wed May 5 18:45:51 2010 |
Aidan | Computing | Hartmann sensor | Python code to interface the Dalsa1M60 and export the temperature to EPICS | Python script
I wrote a Python script, ~/scripts/dalsa_to_epics.py |
|
|
32
|
Thu May 6 10:34:38 2010 |
Aidan | Computing | Hartmann sensor | EPICS and MEDM screen for Hartmann sensor - part 2 | I added the camera parameters to EPICS
and the MEDM screen. These are available
as channels now in EPICS and eventually there |
|
|
33
|
Thu May 6 12:32:11 2010 |
Aidan | Computing | Hartmann sensor | dalsa_to_epics Python script crashed ... | Here's the error:
|
|
|
35
|
Tue May 11 10:32:00 2010 |
Aidan | Computing | Hartmann sensor | Peak detection and centroiding code - review | This looks really efficient! However, I
think there's a systematic error in the calculation.
I tested it on some simulated data and it |
|
|
36
|
Thu May 13 16:54:46 2010 |
Aidan | Computing | Hartmann sensor | Running 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 |
Aidan | Computing | Frame Grabber | C code that calls MATLAB engine and centroiding algorithms | This is an amended version of simple_take.c.
|
|
|
38
|
Tue May 18 09:33:44 2010 |
Aidan | Computing | EPICS | Added 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 |
Aidan | Computing | Hartmann sensor | Centroiding 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. |
|
|
40
|
Thu May 20 10:44:13 2010 |
Aidan | Electronics | SLED | QPhotonics 980nm source power | dV = 0.385V
Responsivity= 0.65A/W
Transimpedance = 1.5E4 V/A |
|
|
41
|
Thu May 20 17:08:36 2010 |
Aidan | Electronics | SLED | SLED module - and driver - LIGO D1000892 - and Hartmann sensor | Verified that the test-point for the current
limit pot on the driver (Wavelength Electronics
- LDTC 0520) was at 0.5V. Driver is set to |
|
|
42
|
Mon May 24 19:17:32 2010 |
Aidan | Laser | Hartmann sensor | Replaced Brass Plate with Invar Hartmann Plate | I 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 |
Aidan | Laser | SLED | Switched off SLED - 6:40AM | |
|
|
44
|
Wed May 26 14:58:04 2010 |
Aidan | Misc | Hartmann sensor | Hartmann sensor cooling fins added | 14:55 - Mindy stopped by with the
copper heater spreaders and the cooling fins
for the Hartmann sensor. We've set them all |
|
|
45
|
Thu May 27 08:25:37 2010 |
Aidan | Electronics | Hartmann sensor | Hartmann 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 |
|
|
46
|
Thu May 27 13:18:51 2010 |
Aidan | Electronics | Hartmann sensor | Removed Cooling fins from Hartmann sensor | I removed the cooling fins from the Hartmann
sensor to see what steady-state temperature
it reached without any passive cooling elements. |
|
|
47
|
Thu May 27 15:42:06 2010 |
Aidan | Electronics | Hartmann sensor | Hartmann sensor with just the base piece | I switched in just the base piece of the
Hartmann sensor. The cooling fins are removed.
I bolted the camera securely to the base |
|