| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
156
|
Tue Nov 29 09:13:49 2011 |
rana | Misc | LIGO 3G | Switching from CO2 to shorter wavelength solid state laser | Around a year ago, Phil and I discussed
the possibility of using an OPO to possibly
generate our own laser beam at ~2 microns |
|
|
155
|
Fri Sep 2 21:41:01 2011 |
Aidan | Electronics | Hartmann sensor | Restarting long term test of QFLD-950-3S | 9:40PM PDT - I've just restarted the long
term measurement of the Hartmann sensor noise
with the QFLD-950-3S. |
|
|
154
|
Fri Sep 2 14:41:48 2011 |
Aidan | Computing | Hartmann sensor | QFLD-950-3S long term test finished | I ran a test of the HWS with the QFLD-950-3S
for 5 days. The test was terminated as we
need to disconnect all the cabling and tidy |
|
|
153
|
Thu Sep 1 15:51:38 2011 |
Aidan | Laser | Ordering | Access 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 |
|
|
152
|
Mon May 30 20:11:27 2011 |
Aidan | Laser | Hartmann sensor | Hartmann sensor lever arm calibration | I ran through the procedure to calibrate
the lever arm of the Hartmann sensor. The
beam from a 632.8nm HeNe laser was expanded |
|
|
151
|
Mon May 30 10:53:00 2011 |
Aidan | Laser | Hartmann sensor | Defocus vs time | I've had the output from a fiber
projected about 400mm onto the Hartmann sensor
for around 5 days now. (The divergence angle |
|
|
150
|
Thu May 26 11:56:46 2011 |
Aidan | Electronics | Laser | Green Laser Pointer beam profile | This measurement was made with the Thorlabs
DCC1545M-GL camera with an RG850 3mm long-pass
filter over the CCD. |
|
|
149
|
Wed May 18 18:52:12 2011 |
Aidan | Computing | Hartmann sensor | Test of position modulation algorithm | I measured the prism and displacement
of the Gaussian beam on the Hartmann sensor.
The beam pointing was modulated at 10mHz |
|
|
148
|
Tue May 17 16:08:02 2011 |
Aidan | Computing | Hartmann sensor | Write speed of the frame grabber to file | The attached file shows the output
of the command. The maximum average frame
rate is 57.2Hz when the nominal frame rate |
|
|
147
|
Wed May 11 18:44:54 2011 |
Aidan | Computing | Hartmann sensor | Matlab Compiler and Matlab Compiler Runtime | Installing MCR
I located the MCRInstaller on our
distribution of MATLAB on the Ubuntu machine |
|
|
146
|
Wed May 11 18:38:47 2011 |
Aidan | Computing | Hartmann sensor | test_HS binary | From Won: (the zip file is also on
the SVN /users/won/compiled_code/test_HS.zip)
|
|
|
145
|
Wed May 11 09:07:03 2011 |
Aidan | Computing | Hartmann sensor | Changed ownership of /opt/EDTpdv | I changed the ownership of /opt/EDTpdv
to controls with the command:
controls@princess_sparkle:/opt/EDTpdv$ |
|
|
144
|
Tue May 10 00:55:08 2011 |
Won | Computing | Hartmann sensor | Matlab Compiler and Matlab Compiler Runtime |
I have spent some time with Matlab
Compiler and Matlab Compiler Runtime (MCR). |
|
|
143
|
Thu Apr 28 22:48:47 2011 |
Aidan | Lab Infrastructure | Electronics | BNC Cables from HWS table to rack | I labelled and strung 8 of the 16
custom 40' BNC cables from L-Com between
the HWS table and the BNC feed-through on |
|
|
142
|
Mon Apr 25 16:28:27 2011 |
Aidan, Joe | Computing | Network architecture | Fixed problem network drive fb1:/cvs on Ubuntu & CentOS machines | With Joe's help we fixed the failure of
princess_sparkle to mount the
fb1:/cvs directory when relying |
|
|
141
|
Sun Apr 24 18:31:18 2011 |
Aidan | Computing | Network architecture | Added hosts and network drives on TCS machines | Under
edit ...
I added the names of the network |
|
|
140
|
Fri Apr 22 19:51:37 2011 |
Aidan | Computing | EPICS | pyepics installed on princess_sparkle | I installed the pyepics
package on princess_sparkle since this is
much easier under Ubuntu than under CentOS. |
|
|
139
|
Mon Apr 18 15:06:53 2011 |
Aidan | Things to Buy | Hartmann sensor | Ordered 2" optics from Newport | Given that the HWS requires several
2" optics to handle the big beam size,
I've ordered the following items from Newport: |
|
|
138
|
Mon Apr 18 15:03:49 2011 |
Aidan | Computing | DAQ | Athena DAC channels hooked up to BNC patch panel | I added the four Athena DAC channels
to the second BNC patch panel in the rack.
At the moment there are only two EPICS channels |
|
|
137
|
Sun Apr 17 21:55:51 2011 |
Aidan | Laser | Hartmann sensor | Hartmann sensor prism/displacement test | I've set up an experiment to test the HWS
intensity distribution displacement measurement
code. Basically the beam from a SLED is just |
|
|
136
|
Sun Apr 17 14:59:36 2011 |
Aidan | Things to Buy | Delivery Note | L-Com patch panel, Newport lenses, Thorlabs fibers delivery notes | |
|
|
135
|
Tue Apr 12 22:46:27 2011 |
Aidan | Computing | EPICS | Added temperature sensor channels to the frame builder and restarted fb1 | Added the following to the frame builder
in /cvs/cds/caltech/chans/daq/C4HWS.ini
and restarted daqd as per instructions |
|
|
134
|
Tue Apr 12 22:30:59 2011 |
Aidan | Computing | EPICS | Installed the thermistor on the Hartmann plate/created MEDM ADC Input screen | I restarted the Athena box and created
an MEDM screen that shows the 8 differential
input voltages next to their corresponding |
|
|
133
|
Mon Apr 4 13:13:23 2011 |
Aidan | Things to Buy | Delivery Note | Newfocus 5102 mirrors and Firewire extension cable have arrived | See attached delivery note ... |
|
|
132
|
Fri Apr 1 09:51:45 2011 |
Aidan | Computing | Hartmann sensor | Prism measurement | I analyzed the results from the prism
experiment. The time series and spectra of
the prism are attached. |
|
|
131
|
Fri Apr 1 02:41:55 2011 |
Won | Computing | Hartmann sensor | exposure time and reproducibility of centroids | Here is a brief and preliminary summary
of rms of centroid displacements calculated
at a number of different exposure time values. |
9x |
|
130
|
Thu Mar 31 11:27:02 2011 |
Aidan | Laser | Hartmann sensor | Prism modulation experiment | I changed the drive amplitude on the function
generator to 0.05Vpp and have measured the
angle of deflection by bouncing a laser off |
|
|
129
|
Wed Mar 30 12:55:54 2011 |
Aidan | Laser | Hartmann sensor | Prism modulation experiment | I've set up a quick experiment to modulate
the angle of the Hartmann sensor probe beam
at 10mHz and to monitor the measured prism. |
|
|
128
|
Mon Mar 28 13:00:50 2011 |
Aidan | Laser | Hartmann sensor | To do: Check the polarization from the SLED | |
|
|
127
|
Wed Mar 16 15:05:47 2011 |
Aidan | Lab Infrastructure | Delivery Note | More Bosch equipment has arrived | 30mm T-junctions, grounding straps and
T-slot covers have arrived
|
|
|
126
|
Fri Mar 11 13:11:33 2011 |
Aidan | Lab Infrastructure | Delivery Note | More Bosch connectors have arrived | See attached delivery note ... |
|
|
125
|
Wed Mar 9 01:00:12 2011 |
Peter Veitch, Won Kim | Computing | Hartmann sensor | Control of frame rate usign external trigger | We managed to successfully apply frame
rate control via external trigger from a
pulse generator. |
|
|
124
|
Tue Mar 8 18:57:50 2011 |
Aidan | Things to Buy | Delivery Note | Fiber optics cable and Bosch Fastener | |
|
|
123
|
Tue Mar 8 18:48:00 2011 |
Aidan | Computing | Hartmann sensor | HWS code is running and recording centroids | The Hartmann sensor is running continuously
and is now recording data to file. The formatting
has changed slightly with the data now stored |
|
|
122
|
Tue Mar 8 18:28:14 2011 |
Aidan | Computing | General | TO DO notes |
Write a Wiki page that describes
how to add channels to the Athena Box
Write a Wiki page that describes how |
|
|
121
|
Tue Mar 8 11:30:26 2011 |
Aidan | Computing | Hartmann sensor | Hartmann sensor code changes and NTP server | I've made the following changes to the
Hartmann sensor code and to the machine running
the HWS. |
|
|
120
|
Thu Mar 3 07:30:18 2011 |
Won | Computing | Hartmann sensor | Effect of high pixel count on rms | We have been investigating how pixel count
is related to the centroid displacements
by taking several sets of image frames with |
11x |
|
119
|
Tue Mar 1 17:05:45 2011 |
Aidan | Electronics | Hartmann sensor | Dalsa 1M60 current draw | Steve and I measured the current drawn
by the Dalsa 1M60 by connecting it to the
BK Precision 1735 lab power supply that display |
|
|
118
|
Tue Mar 1 11:21:37 2011 |
Aidan | Things to Buy | Delivery Note | More Bosch framing parts - angle connectors | Another box of Bosch framing parts
arrived today. The delivery note is attached. |
|
|
117
|
Tue Mar 1 11:19:34 2011 |
Aidan | Things to Buy | Delivery Note | MFF001 flipper mirror has arrived | The Thorlabs MFF001 flipper mirror
recommended by Bram has arrived. The delivery
note is attached. |
|
|
116
|
Tue Mar 1 10:47:18 2011 |
Aidan | Misc | Hartmann sensor | Electron to Counts conversion efficiency | Using some of the old data from James (attached
below), I calculated the CCD conversion efficiency
(CE) from electrons to bits (Counts). |
|
|
115
|
Mon Feb 28 17:56:32 2011 |
Aidan | Computing | Hartmann sensor | Got HWS code running and interface to EPICS | Here are the notes from today's efforts:
|
|
|
114
|
Mon Feb 28 17:33:07 2011 |
Aidan | Computing | Hartmann sensor | Hartmann Seidel abberation channels in frame builder | Using the same methods as before, see below,
I've added some Hartmann sensor EPICS channels
to the frames. |
|
|
113
|
Thu Feb 24 14:23:58 2011 |
Aidan | Lab Infrastructure | Hartmann sensor | Hartmann Sensor box cut down to size | I reduced the height of the Hartmann
sensor box. This is what it looks like now:
|
|
|
112
|
Thu Feb 24 14:20:55 2011 |
Aidan | Misc | Ring Heater | aLIGO H2 Ring Heater Pics | Here are some pictures of the ring
heater segments destined for the H2 Y-arm
this year. |
|
|
111
|
Thu Feb 24 13:35:41 2011 |
Aidan | Things to Buy | Delivery Note | Bosch framing has arrived | The custom pieces of the Bosch framing
have arrived. Transportation is currently
moving them downstairs to the lab. The packing |
|
|
110
|
Thu Feb 24 10:23:31 2011 |
Christopher Guido | Laser | Laser | LTG initial noise | Cheryl Vorvick, Chris Guido, Phil Willems
Attached is a PDF with some initial
noise testing. There are 5 spectrum plots |
|
|
109
|
Wed Feb 23 20:18:30 2011 |
Aidan | Electronics | Hartmann sensor | Successfully re-started the Hartmann sensor | I reattached the Hartmann Sensor
to the LENOVO machine that is running Ubuntu
and turned it on (it's been disconnected |
|
|
108
|
Wed Feb 23 18:04:38 2011 |
Aidan | Things to Buy | Delivery Note | First parts of Bosch framing have arrived from Valin |
|
|
|
107
|
Fri Feb 18 14:53:50 2011 |
Phil | Laser | Laser | LTG laser delivering specified power | I got the LTG CO2 laser to deliver 50.02W
as measured by the Thorlabs 200W power head
today. This required running the Glassman |
|