 Wed Aug 11 02:44:37 2010, Zach, Update, elog, elog restarted
|
You'll never guess what happened: the elog crashed!
I restarted it with the script. Yay. |
Wed Aug 4 01:44:56 2010, Koji, Configuration, PEM, Accelerometer located on and below the PSL table 
|
[Jenne and Koji]
In order to characterize the seismic vibration of the PSL table, we put the accelerometers on
and below the PSL table. |
 Tue Aug 10 22:40:55 2010, Koji, Summary, PEM, Accelerometer located on and below the PSL table
|
Result of the accelerometer measurement
Introduction
We wanted to characterize the PSL table before the work before its lifting up.
We put a set of three-axis Wilcoxon accelerometers on the ground and another set on the PSL table through the weekend. |
|
Tue Aug 10 17:21:48 2010, steve, Update, General, PSL optical table is at 30" height
|
Mike Gerfen, Koji and Steve,
Our old ( 6 x 10 x 1 ) ft Newport optical table will have the same height as the neighboring AP table when this job is finished. |
|
Tue Aug 10 16:55:38 2010, Jenna, Update, Electronics, c1iovme restarted
|
| Alastair and I restarted the c1iovme around the time of my last elog entry (~3:20). |
|
Tue Aug 10 15:23:35 2010, Jenna, Update, Electronics, Rubidium clock time constant
|
[Jenna & Alastair]
We changed the locking time constant on one of the Rubidium clocks using the RbMon software that came with it. We had to use the ancient Dell laptop
latitudeD810 because it has a serial port built in, and we couldn't get the usb->serial adapter to work right with the clock. We tried the usb connector |
|
Tue Aug 10 05:56:07 2010, Koji, Update, PSL, PSL Table Lifting Preparation
|
Work on Aug 9th
Steve, Jenne, Koji, Alberto, Aidan, Jan, Sharmila, Katherine
From
9am to 6pm
Shutting down the PSL after the 90885
hours of service
Removals
The accelerometers |
|
Tue Aug 10 01:05:17 2010, Zach, Update, elog, elog restarted
|
| Elog was down. Restarted with the script. |
|
Mon Aug 9 13:32:02 2010, nancy, Update, IOO, Mode Cleaner ASC 6x
|
E-log entry for Friday - will attach more plots to this entry on
wednesday after i am back to the 40.
Started working at some 1030 hrs and recording the Open Loop Tfs for all 6 loops.
The control was not so good, |
|
Mon Aug 9 15:54:43 2010, Koji, Update, IOO, Mode Cleaner ASC
|
The WFS and QPD servos were working. That was great.
Everything was fine except for the time series plots.
I could not get what story you are telling with the time series. |
|
Mon Aug 9 21:50:50 2010, nancy, Update, IOO, Mode Cleaner ASC
|
Quote:
The WFS and QPD servos were working. That was great. |
|
Wed Aug 4 11:10:28 2010, nancy, Update, IOO, Mode Cleaner WFS
|
Yesterday, I started twiddling with the Mode Cleaner at about 2 pm.
So the seismic data should be all good before that.
I was using it till about 3.30 am, and then left for the night with locking it and swithcing |
|
Wed Aug 4 12:49:42 2010, nancy, Update, IOO, Mode Cleaner WFS 6x
|
Quote:
Yesterday, I started twiddling with the Mode Cleaner at about 2 pm. |
|
Thu Aug 5 01:29:39 2010, nancy, Update, IOO, Mode Cleaner WFS
|
I calculated the MC1&3 Vs WFS1&2 Output Matrix today from the above measurements with koji's help.
the matrix can be generated from the m file at /cvs/cds/caltech/users/nancy/Align_Matrix/matrix.m |
|
Thu Aug 5 11:48:52 2010, nancy, Update, IOO, Mode Cleaner WFS
|
Quote:
|
|
Thu Aug 5 13:05:53 2010, Koji, Update, IOO, Mode Cleaner WFS
|
Upon Nancy's request, I checked the status of the suspensions.
I found that the power strip of the 1Y4 rack was turned off.
Since it has a over current breaker, I don't know whether it happened by someone or over current. |
|
Fri Aug 6 10:44:55 2010, nancy, koji, Update, IOO, Mode Cleaner WFS
|
Quote:
Upon Nancy's request, I checked the status of the suspensions. |
|
Fri Aug 6 12:33:10 2010, Koji, Update, IOO, Mode Cleaner WFS
|
Yesterday , I put in the Output Matrix, and changed the gain sliders for the 4 WFS loops.
|
|
Mon Aug 9 12:46:24 2010, Nancy, Update, IOO, Mode Cleaner WFS
|
|
|
Sat Aug 7 21:57:56 2010, rana, Summary, DMF, seisBLRMS restarted
|
The green xterm on op540m which is running the seisBLRMS DMF got stuck somehow ~3 days ago and lost its NDS connection. I closed the matlab session and
restarted it. Seismic trends are now back online. |
|
Sat Aug 7 21:09:59 2010, Dmass, Configuration, Computer Scripts / Programs, eLog changes
|
I made some changes to the elog on nodus:
Made a backup of /cvs/cds/caltech/elog/elog-2.7.5/elogd.cfg called elogd.cfg.bk.20100407 in the same directory
Added a
folder: /cvs/cds/caltech/elog/elog-2.7.5/logbooks/EAGER_Lab
Restarted the elog daemon via the start-elog-nodus script in the |
|
Sat Aug 7 11:07:44 2010, Koji, Configuration, PSL, MC kept locked / PMC control gain reduced to +13dB
|
Jenne asked us to keep th MC locked and let the seismometers happy through this weekend.
Note that the work at the control room and the desks are no problem as far as you are quiet.
Nancy told Jenne and me that she finished the work and reverted the WFS to the old state at 4:30AM. |
|
Sat Aug 7 10:47:38 2010, Koji, Summary, elog, elog restarted / source of the trouble eliminated
|
Nancy notified me that the elog crashed. It was fixed.
I restarted elog, but it kept crashing. Some of the entries on Aug 6th caused the trouble.
I tried to refresh the pictures in entries 3376, 3377, 3378. Still it kept crashing. |
|
Thu Aug 5 00:17:41 2010, Koji, Update, PSL, PSL preparation work
|
We start the work on the cables at around the PSL table.
Aug 5th 10am-4pm?: (Kiwamu, Alberto, Koji) |
|
Thu Aug 5 22:36:11 2010, Koji, Update, PSL, PSL preparation work
|
PSL preparation work
Aug 5th 10am-4pm?: (Kiwamu, Alberto, Koji) |
|
Fri Aug 6 08:09:15 2010, steve, Update, PSL, PSL preparation work
|
Quote:
PSL preparation work |
|
Fri Aug 6 20:00:03 2010, Koji, Update, PSL, PSL preparation work
|
PSL preparation work report
Aug 6th 10am-5pm: (Steve, Jenne, Alberto, Kiwamu, Koji)
- We labeled the cables to be disconnected
These will be disconnected in order to isolate the PSL table and the frame (housing) from the other part of the lab.
|
|
Fri Aug 6 15:50:29 2010, Gopal, Update, Optic Stacks, (Much Better Looking) Displacement-Displacment Transfer Functions
|
I reran the FDA in COMSOL on the MC1/MC3 Stack and produced the following Displacement-Displacement Transfer Functions:
X-Translational
Drive has a blue background |
|
Fri Aug 6 19:46:59 2010, Gopal, Update, Optic Stacks, (Much Better Looking) Displacement-Displacment Transfer Functions
|
Quote:
I reran the FDA in COMSOL on the MC1/MC3 Stack and produced the following Displacement-Displacement |
|
Sat Jul 24 13:13:41 2010, rana, steve, alberto, Update, General, Initial Crane Inspection reveals flaws: wiring and oil
|
The guy from KroneCrane (sp?) came today and started the crane inspection on the X End Crane. There were issues with our crane so he's going to resume
on Monday. We turned off the MOPA fur the duration of the inspection.
None of our cranes have oil in the gearbox and it seems that they never did since they have never been maintained. Sloppy installation |
|
Mon Jul 26 10:04:24 2010, steve, Update, General, Initial Crane Inspection reveals flaws: wiring, oil and imbalance
|
Quote:
The guy from KroneCrane (sp?) came today and started the crane inspection on the X End Crane. There were issues with |
|
Wed Jul 28 16:42:21 2010, steve, Update, General, Crane gear box cheched
|
Quote:
|
|
Fri Aug 6 17:47:36 2010, steve, Summary, General, cranes load tested at 1998 lbs
|
Quote:
|
|
Thu Aug 5 16:18:37 2010, Alastair, Update, General, clocks still not locked fully - hut removed
|
The rubidium clocks are still not quite locked together, though it is clear that the beat frequency has dropped a lot since yesterday.
I checked on the clocks and the 1pps sync light is on. The clocks are really hot again though despite the gap left at the bottom of the igloo.
The side of the clocks were hot enough to not be touchable. |
|
Fri Aug 6 16:20:08 2010, rana, Update, General, clocks still not locked fully - phase shifted
|
I tried to get the clocks to be closer to 90 deg for the relative phase by adding some cable length to one of the lines, but they are still wandering
too much. We need to use the serial interface and up the gain in their 1PPS locking loops. |
|
Fri Aug 6 12:22:04 2010, Jenne, Update, IOO, MC data taking over the weekend
|
Nancy has the Mode Cleaner for her work for the night, and is going to leave the MC happy, locked, autolocker on, WFS enabled, the works, and write down
in the elog the time that she's finished. After that, I'm taking MC/seismic data all weekend long. During the weekend, if at all possible, please don't go into the IFO room, especially near the Mode Cleaner. If you do need to go into |
|
Fri Aug 6 12:44:29 2010, Koji, Update, IOO, MC data taking over the weekend
|
Question:
Do you like to keep the WFS turned on?
|
|
Thu Aug 5 17:59:23 2010, Koji, Update, PSL, Cable removal from the control room
|
[Alberto, Kiwamu, and Koji]
We removed the BNC cables from the control room.
The work was as hard as the one I had when I swept a 300m tunnel with a vacuum... |
|
Wed Aug 4 20:58:22 2010, Gopal, Update, WIKI-40M Update, 7.28.10 - 8.4.10 Weekly Update
|
Summary of this week's activities:
7/28: Finished Y-Translational 4-Stack Analysis
"Tapered Cantilever" COMSOL tutorial |
|
Wed Aug 4 20:15:07 2010, Jenne, Update, PEM, Yay! Guralps work again!
|
After much hassle, the Guralp cable from the ADC Out of the breakout box to the ADC is fixed, and everything is plugged in and working again. The seismometers are back in their regular positions at the ends of
the MC, ready for some excellent seis/MC combo data. |
|
Wed Aug 4 19:50:58 2010, rana, Configuration, Electronics, Rubidium clocks too hot: hut removed
|
Alastair found that the foam hut that he and Jan put on top of the Rb clocks to temperature stabilize them was too good of an insulator. The Rb boxes
had gotten very hot and became internally unlocked as seen on the front panel.
After we let them cool down with the box off, I turned them back on. After several minutes the 'Locked' light came back on. Some minutes after |
|
Tue Aug 3 11:50:16 2010, Jenne, Update, PEM, Seismometer Problem Tracked down
|
After some cable swapping this morning, I have determined which cable is bad. It's the Gur1 cable between the seismometer and the breakout
box. This is a milspec -> 37pin d-sub cable. I'll pull out the cable and have a look at it after lunch. |
|
Wed Aug 4 03:01:56 2010, Jenne, Update, PEM, Catastrophic Cable Failures
|
Quote:
After some cable swapping this morning, I have determined which cable is bad. It's the Gur1 cable between |
|
Sat Jul 31 17:37:36 2010, josephb, Update, CDS, Cables needed for CDS test
|
Last Thursday, Kiwamu and I went through the cabling necessary for a full damping test of the vertex optics controled by the sus subsytem, i.e. BS, ITMX,
ITMY, PRM, SRM. The sus IO chassis is sitting in the middle of the 1X4 rack. The c1sus computer is the top 1U computer in that rack.
ADCs:
The hardest part is placing the 2x D-sub connectors to scsi on the lemo break out boxes connected to the 110Bs. The breakout |
|
Tue Aug 3 11:17:10 2010, kiwamu, Update, CDS, Diagrams for Cables needed for CDS test
|
Current Wiring Setup for the Suspension Controls
|
|
Tue Aug 3 03:15:06 2010, nancy, Update, IOO, MC back to locked mode
|
| I turned the WFS gain to 0.02 back, and the MC is locked, the data for the seismic motion might be meaningful nowforth. |
|
Mon Aug 2 18:02:46 2010, Jenne, Update, PEM, Seismometer Update: Still not good, but perhpas getting better
|
Today's seismometer diagnosis activities are still underway, this is just an update (since I did some reboots):
Problem 1: X and Z channels on both seismometers were flipped. I unplugged an X cable (East/West on the cable labels) and the Z channel (vert)
would go to floating ADC zero. Rana suggested that the ADCs sometimes have random channel hopping, and that a reboot of the c0dcu1 computer which |
|
Tue Aug 3 01:51:01 2010, Jenne, Update, PEM, Seismometer Update: Still not good, but perhaps getting better
|
Quote:
Today's seismometer diagnosis activities are still underway, this is just an update (since I did some reboots): |
|
Mon Aug 2 21:52:57 2010, Koji, Update, IOO, MC is running at the full power
|
[Nancy and Koji]
We restored the full power operation of the MC.
Restoration of the suspensions |
|
Mon Aug 2 17:12:28 2010, Koji, Update, General, Lab schedule for the week of Aug. 2
|
Aug
2 Mon - 5 Thu WFS work (Nancy)
|
|
Fri Jul 30 09:55:34 2010, steve, Configuration, VAC, slow pumpdown has started
|
Bob and Steve closed BS chamber with the help of the manual Genie lift and the pump down started. The PSL shutter was closed and manual block was placed
in the beam path. High voltage power supplies were checked to be off.
Pumping speed ~ 1 Torr/min was achieved at 1/8 of a turn opened roughing valve RV1 |
|
Fri Jul 30 17:54:55 2010, steve, HowTo, VAC, How to stop and start slow pumpdown
|
Quote:
Bob and Steve closed BS chamber with the help of the manual Genie lift and the pump down started. The PSL shutter |
|
Fri Jul 30 22:07:42 2010, Koji, HowTo, VAC, How to stop and start slow pumpdown
|
Kiwamu and Koji
The rough pumping was stopped at 230mmTorr. We are going to resume the pumping tomorrow morning.
RV1 was closed with torque wheel.
V3 was closed from MEDM
RP3 wss stopped from MEDM
The quick |
|
Sat Jul 31 10:12:05 2010, kiwamu, Update, VAC, Re: How to stop and start slow pumpdown
|
| I resumed the pumping down. It started from 9:55 am. |
|
Sat Jul 31 14:59:33 2010, kiwamu, Update, VAC, Re: How to stop and start slow pumpdown
|
I stopped the pumping at 14:50 pm because I was going back home. I did the same procedure as Koji
wrote down (see here).
The P1 pressure reached 32 Torr. |
|
Mon Aug 2 10:26:15 2010, steve, Configuration, VAC, very slow pumpdown completed
|
Quote:
Bob and Steve closed BS chamber with the help of the manual Genie lift and the pump down started. The PSL shutter was |
|
Sun Aug 1 21:40:27 2010, rana, Summary, PSL, FSS: SLOWDC response
|
I bet you thought that the NPRO slow actuator response could be well represented by a pole at ~0.1 Hz? Well, that's just what they want you to believe.
I attach the response measured in FSS-FAST (with no feedback to the SLOW actuator) when the SLOW is given a step. As you may remember from
kindergarten, the response of a single pole low pass should just be an exponential. Clearly, there's more here than 1 pole. |
|
Sun Aug 1 21:04:45 2010, rana, Summary, Computer Scripts / Programs, MC Autolocker fixed
|
Someone had left a typo in the MC autolocker script recently while trying to set the lock threshold to 0.09. As a result, the autlocker wouldn't run.
I repaired it, made a few readability improvements, and checked in the new version to the SVN. If you make script changes, check them in. If
you think its too minor of a change for a SVN checkin, don't do it at all. |
|
Sat Jul 31 22:35:01 2010, Koji, Update, VAC, Vac-P1 still 1.2mtorr
|
I resumed the pumping from 19:00.
Now the valve RV1 is full open. But the pumping is really slow as we are using only one RP.
After 3hrs of pumping, P1 reached 1.2mmtorr but still we need 2hrs of pumping... |
|
Sun Aug 1 18:50:35 2010, Koji, Update, VAC, P1 = 0.48 torr
|
I resumed the pumping today. Now the pressure is 0.48 torr. The pump was stopped.
Quote:
|
|
Sat Jul 31 04:03:11 2010, Gopal, Summary, Optic Stacks, Complete Displacement Translational Transfer Function Matrix
|
Over the past 36 hours, I've run full-fledged FDAs on KALLO.
The transfer functions for translational drives and responses are neatly described by the attached transfer
function "matrix." |
|
Fri Jul 30 17:52:12 2010, Koji, Configuration, General, Jacket
|
Jenne and I need our jackets. We removed them from the Rb clock.
Thanks for making them warm. Probably a Scotland sweater would fit. |
|
Fri Jul 30 19:20:15 2010, Alastair, Configuration, General, Jacket
|
Quote:
Jenne and I need our jackets. We removed them from the Rb clock. |
|
Fri Jul 30 17:24:22 2010, Jenne, Update, PEM, Guralps back in the 40m
|
I brought the GUR2 seismometer back from Bridge so I can get some more MC/Seismic data during the next week while we're pumped down, before we start
doing things to the PSL table. Both of the Gur Seismometers are connected back up to the breakout box as of ~3:27pm today. Alastair still has
the handheld controller thing (which I use for mass centering, on occasion), since he'll want the seismometer back in a week or two when I'm done with |
|
Thu Jul 29 12:31:09 2010, Koji, Summary, General, Lab Schedule
|
July
29 Thu BS chamber work: Move cable towers / green steering mirrors / (2 TTs with TT charactrization) / Put the heavy door by 5PM.
30 Fri Pumping down |
|
Fri Jul 30 14:53:09 2010, steve, Update, General, PSL table leg upgrade
|
Quote:
July |
|
Fri Jul 30 12:46:38 2010, Koji, Configuration, 40m Upgrading, BS chamber status
|
| |
|
Wed Apr 21 10:09:23 2010, kiwamu, Update, Green Locking, waist positon of Gaussian beam in PPKTP crystals
|
Theoretically the waist position of a Gaussian beam (1064) in our PPKTP crystal differs by ~6.7 mm from that of the incident Gaussian beam.
So far I have neglected such position change of the beam waist in optical layouts because it is tiny compared with the entire optical path.
But from the point of view of practical experiments, it is better to think about it. |
|
Tue Apr 27 14:18:53 2010, kiwamu, Update, Green Locking, waist positon of Gaussian beam in PPKTP crystals
|
The mode profile of Gaussian beams in our PPKTP crystals was calculated.
I confirmed that the Rayleigh range of the incoming beam (1064 nm) and that of the outgoing beam (532 nm)
is the same. |
|
Thu Jul 29 21:13:39 2010, Dmass, Update, Green Locking, waist positon of Gaussian beam in PPKTP crystals
|
Quote:
The mode profile of Gaussian beams in our PPKTP crystals was calculated. |
|
Thu Jul 29 22:58:25 2010, kiwamu, Update, Green Locking, waist positon of Gaussian beam in PPKTP crystals
|
- As you said, I just calculated the waist position in the crystal because the speed of light changes in a medium and eventually the waist position also
changes.
- Yes, I did. Once you get a beam with the right waist size, you just put your crystal at the waist position with the offset. |
|
Fri Jul 30 00:02:15 2010, Dmass, Update, Green Locking, waist positon of Gaussian beam in PPKTP crystals
|
Quote:
- As you said, I just calculated the waist position in the crystal because the speed of light changes in a medium and |
|
Fri Jul 30 09:51:58 2010, kiwamu, Update, Green Locking, Re: waist positon of Gaussian beam in PPKTP crystals
|
Okay, I guess I understand what you want to know. I did the following steps.
1. calculated the conversion efficiency as a function of the waist size. I found w~50um was the optimum waist.
|
|
Thu Jul 29 22:08:32 2010, Alberto, Update, SUS, More optics installed on the BS table
|
[Koji, Steve, Kiwamu, Alberto]
- This afternoon we installed a few new optics on the BS table: GR_PBS, GRY_SM2, GRY_SM1.
- We pulled up the cables so that we had more freedom to move one of the cable towers farther South. |
|
Fri Jul 30 02:54:04 2010, Koji, Update, 40m Upgrading, More optics installed on the BS table
|
July 29 Thu [Steve, Alberto, Kiwamu, Koji]
We placed some optics in the BS chamber.
The chambers are ready to be pumped down on Friday once the heavy door is placed. |
|
Thu Jul 29 20:43:32 2010, Gopal, Summary, Optic Stacks, Modeling Tips and Tilts
|
I have discovered a method of completely characterizing
the 6x6 response of all six types (x-,y-, and z- translational/rotational) of oscillatory disturbances at the base of the stack.
|
|
Thu Jul 29 15:35:21 2010, josephb, kiwamu, Update, CDS, Working out ADC/DAC/BO wiring
|
We are currently using the SUS wiring diagram found on Ben Abbott's page (link here) to determine
the ADC/DAC/BO channel numbers for each individual optics inputs and outputs. Basically it involves tracking the paths back from the Pentek's, XY220,
and IC110Bs to a point where we can identify it as a Coil UL or a PD whitening filter control or whatever it might be. |
|
Thu Jul 29 17:12:48 2010, josephb, kiwamu, Update, CDS, Re:Working out ADC/DAC/BO wiring
|
We have installed 4 BO boards, 3 DAC boards and 1 ADC board for new C1SUS.
They are on
the 1Y5 rack.
|
|
Thu Jul 29 17:11:16 2010, Gopal, Update, COMSOL Tips, Including Gravity in COMSOL
|
[Gopal, Jan]
For the past couple of days, Jan and I have been discussing a major issue in
COMSOL involving modeling both oscillatory and non-oscillatory forces simultaneously while using FDA. It turns out that he and I had run into the |
|
Thu Jul 29 12:31:24 2010, josephb, Update, CDS, Working DAC, working IOP - next up SUS
|
Ok, after a few minutes of talking to Alex, I got the correct "GUI syntax" through my head, and we now have a simple working green end control
which in fact puts signals out through the DAC.
Note to self, do not put any additional filters or controls in the IOP module. Basically just change the master block with GDS numbers, DCU_ID |
|
Thu Jul 29 12:13:28 2010, kiwamu, Summary, CDS, near term plan
|
[Joe and Kiwamu]
|
|
Thu Jul 29 11:33:38 2010, kiwamu, Update, CDS, PCI5565 driver for RFM
|
Yesterday I installed a PCI-5565 driver on new C1SUS in order to test the RFM.
Since the
RFM on the new CDS is not working, we had to test it by using some softwares.
|
|
Mon Jul 26 20:12:18 2010, kiwamu, Update, SUS, OSEMs on PRM
|
[Alberto and Kiwamu]
We installed the OSEMs to the new PRM.
As I wrote down on the elog ( |
|
Tue Jul 27 21:38:21 2010, kiwamu, Update, SUS, installation of in-vac optics
|
[Alberto and Kiwamu]
We put the PRM back approximately on the right place.
Also we installed the pick off mirrors and the PZT mirror.
|
|
Wed Jul 28 17:32:37 2010, kiwamu, Update, SUS, installation of in-vac optics
|
[Jenne, Koji and Kiwamu]
We have installed two steering mirrors and the green periscope.
Also we took the tip-tilt out from the chamber for characterization |
|
Thu Jul 29 10:39:43 2010, kiwamu, Update, SUS, Re: installation of in-vac optics
|
I updated the
last entry about the in-vac work (see here) |
|
Wed Jul 28 18:24:57 2010, Jenne, Update, Green Locking, 2 Green Periscopes have mirrors, aligned
|
[Koji, Jenne, Kiwamu]
This is to describe the work that went on in the Cleanroom today. Kiwamu's entry will detail the tidbits that happened in the chamber.
We engraved the periscope mounts with the mirror info for the mirrors which were placed in the periscope. We also engraved the barrels of |
|
Wed Jul 28 14:54:56 2010, steve, Update, SAFETY, evacuation drill at the 40m
|
Head count at the evacuation drill today. I checked alarms and flashers at room 104,102,101, 103, 105 and 107. They were really loud and
bright. |
|
Wed Jul 28 14:34:29 2010, channa, Update, Computers, installation on allegra
|
I have done the following on allegra and rosalba:
[root@allegra caltech]# yum install glade2
On rosalba the matplotlib was out of date with respect to allegra. I have no idea how the version 0.98 on allegra got there, but I left it. |
|
Wed Jul 28 13:06:47 2010, Razib, Update, Phase Camera,
|
Attached are some calculation that I did previously for the phasecamera setup. This shows the nature of the beat signal that we are measuring.
I am also trying to characterize the noise source of the camera also. Following images shows the mean dark noise (with no light on the camera)
and the standard deviation for 100 snaps at an exposure time of 500 µs. |