| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
81
|
Wed Aug 20 23:19:39 2008 |
Dmass | Laser | Doubling | Preliminary Doubling MZ Setup | A prelim expermintal setup for measuring the
phase/freq noise of 532 nm light generated
by PPKTP crystals relative to the 1064 nm |
|
|
80
|
Mon Aug 18 23:46:42 2008 |
Dmass | Computing | DAQ | More on the DAQ | It appeared today that the DAQ channels wouldnt
record. Only one would write no matter how
I edited the .ini file.
|
|
|
79
|
Fri Aug 15 15:59:07 2008 |
Dmass | Computing | DAQ | DAC DAQ and ADC working | The problem was the timing. I changed what
the simulink .mdl file wanted for a clock
signal to what it was actally getting (64 |
|
|
78
|
Fri Aug 15 02:17:46 2008 |
Dmass | Electronics | General | no DAC output voltage when running OMS didgital system | [quote]I tried to use the OMS digital system
for a measurement, but I couldn't get the
DAC output to work.
|
|
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77
|
Mon Aug 11 15:32:00 2008 |
Stefan Ballmer | Electronics | General | no DAC output voltage when running OMS didgital system | I tried to use the OMS digital system for
a measurement, but I couldn't get the DAC
output to work.
|
|
|
76
|
Mon Aug 11 14:15:57 2008 |
Dmass | Computing | CDS | ATF system | [quote]I made a preliminary generic model
in simulink. This is stored on [B]ws1[/B]
as /users/dmass/atf.mdl
|
|
|
75
|
Tue Aug 5 15:23:38 2008 |
Dmass | Computing | CDS | ATF system | [quote]I made a preliminary generic model
in simulink. This is stored on [B]ws1[/B]
as /users/dmass/atf.mdl
|
|
|
74
|
Fri Aug 1 15:06:11 2008 |
Dmass | Computing | CDS | ATF system | I made a preliminary generic model in simulink.
This is stored on [B]ws1[/B] as /users/dmass/atf.mdl
|
|
|
73
|
Fri Aug 1 14:52:27 2008 |
Dmass | Computing | DAQ | Daq not recording | [quote]There is still something wonky with
the DAQ. Nothing appears to be writing at
the moment, as I can only get 8 seconds of |
|
|
72
|
Tue Jul 29 00:58:36 2008 |
Masha | Laser | Fiber | first fiber noise measurement | I'm attaching the fiber noise measurement
from one mach zehnder channel
along with some noise sources. The total |
|
|
71
|
Tue Jul 29 00:47:37 2008 |
Masha | Laser | Fiber | mach zehnder setup | As per dmass's prodding, I am putting up some
pictures of what I'm doing.
|
|
|
70
|
Mon Jul 28 15:58:49 2008 |
Dmass | Computing | DAQ | Daq not recording | There is still something wonky with the DAQ.
Nothing appears to be writing at the moment,
as I can only get 8 seconds of data from |
|
|
69
|
Fri Jul 25 17:07:34 2008 |
Dmass | Laser | PMC | Cavity Pole Measurement on the PMC | [quote]Measurement of the PMC cavity pole:
The following was done at powers of .234 |
|
|
68
|
Fri Jul 25 15:23:14 2008 |
Dmass | Laser | PSL | New Vertical PSL | With the installation of the new "clear top"
on the PSL (see picture), an interesting
design feature has come to light.
|
|
|
67
|
Fri Jul 25 14:59:24 2008 |
Dmass | Computing | fubar | digital control broken. | [quote]I tried to restore the hacked up oms
control system via a series of escalating
measures.
|
|
|
66
|
Wed Jul 23 12:04:01 2008 |
Dmass | Electronics | General | Universal PDH box | [quote]I just picked up the "Universal PDH
Box" prototype from Rich Abbott.
|
|
|
65
|
Tue Jul 22 18:43:06 2008 |
Dmass | Computing | fubar | digital control broken. | I tried to restore the hacked up oms control
system via a series of escalating measures.
|
|
|
64
|
Fri Jul 18 16:14:28 2008 |
Dmass | Electronics | General | Universal PDH box | I just picked up the "Universal PDH Box" prototype
from Rich Abbott.
|
|
|
63
|
Thu Jul 17 16:44:27 2008 |
Dmass | Laser | PSL | Laser is off | Leaving laser off while I hack at screens
downstairs. Feel free to turn on for anything.
|
|
|
62
|
Wed Jul 16 11:47:18 2008 |
Dmass | Computing | General | Front End Machine Namechange | The front end machine in the Bridge Basement
has been renamed "atf" from "oms".
|
|
|
61
|
Mon Jul 14 16:01:45 2008 |
Stefan Ballmer | Electronics | ISS | H1 ISS spare tested | I tested the modified H1 ISS spare using a
post-PMC sensing.
I got the expected performance in-loop (about |
|
|
60
|
Fri Jul 11 16:20:21 2008 |
Stefan Ballmer | Electronics | | PMC | Since the digital system was in an ambigous
state I locked the PMC using a SR560.
I did this so I can use the lab setup to |
|
|
59
|
Sun Jun 1 18:52:49 2008 |
tobin | Computing | General | borkspace compiling | Following Alex's suggestions, I fixed the
front-end problems we were encountering the
other day.
|
|
|
58
|
Thu May 29 20:00:48 2008 |
tobin | Computing | Fugly | borkspace compiling | Dmass and I tried to compile and install a
new system on the borkspace machine here.
|
|
|
57
|
Tue May 20 15:55:31 2008 |
Dmass | Laser | EOM | EOM Phase lag | The attached transfer function was measured
with the experimental setup outlined in entry
53. The first transfer function (Raw Data) |
|
|
56
|
Mon May 19 17:28:44 2008 |
Dmass | Laser | PMC | Cavity Pole Measurement on the PMC | Measurement of the PMC cavity pole:
The following was done at powers of .234 |
|
|
55
|
Tue May 13 12:37:31 2008 |
Dmass | Laser | Fiber | New fiber | We got a box of fiber from Boston (Marie Woods).
It is now on the optics table in the bridge
basement.
|
|
|
54
|
Wed May 7 04:44:31 2008 |
Dmass | Computing | General | DTT and Fast Channels fixed | The playback in dataviewer on the fast channels
was semi broken (would not display full data
on a playback, but could do all else).
|
|
|
53
|
Tue May 6 18:18:59 2008 |
Dmass | Laser | EOM | EOM Phase lag | I used the experimental setup below to measure
the transfer function between the EOM (which
is before the amplifier) and the reflections |
|
|
52
|
Mon May 5 20:32:50 2008 |
Dmass | Computing | General | MEDM, FB, FE, Etc | I restarted the oms box in the rack, and was
in the process of trying to get new medm
control screens up with Rob. I now have neither |
|
|
51
|
Fri May 2 22:54:44 2008 |
Dmass | Computing | | Screens | I made a simulink model and put it here: /cvs/cds/advLigo/src/epics/simLink/atf.mdl
as instructed by the rolf wiki:
|
|
|
50
|
Fri May 2 22:00:17 2008 |
Dmass | Computing | | Daq Channels | I activated the channels C2:OMS-SUS_T3_ACT_OUT
and C2:OMS-SUS_LEFT_IN1 in daqconfig, set
both to acquire, and saved them to cvs/cds/caltech/chans/daq/C2OMS.ini
|
|
|
49
|
Fri May 2 21:39:13 2008 |
Dmass | Laser | PSL | Laser power on table lowered | I have changed the polarizer before the polarizing
beam splitter to minimize output power.
|
|
|
48
|
Fri May 2 21:09:26 2008 |
Dmass | Laser | General | Strange Noise | We may want to set up a microphone and see
if the noise is correlated to the sharp power
fluctuations in the laser.
|
|
|
47
|
Fri Apr 25 13:33:35 2008 |
Dmass | Laser | PSL | power drift | Here is a trend of the power drift taken over
10 days. The units are in counts produced
by a photodiode stationed at a lower power |
|
|
46
|
Tue Apr 22 20:07:50 2008 |
Dmass | Laser | PSL | Profile of 35W PSL | The total power seemed to be down about 10%,
and that lower number was divided between
two beams at the output. They opened up the |
|
|
45
|
Tue Apr 22 16:25:24 2008 |
rob | Laser | PSL | Profile of 35W PSL | [quote]I scanned the beam on the 35W laser
again (for the first time since it was fixed
by our German friends during the LSC meeting). |
|
|
44
|
Fri Apr 11 17:15:49 2008 |
Dmass | Laser | EOM | Transfer Function | We traded network analyzers and now can go
below 100kHz in our measurement. The following
transfer function was taken with an HP 4395A.
|
|
|
43
|
Fri Apr 11 16:37:03 2008 |
Stefan Ballmer | Computing | General | Set up CDS wireless router / controlling from nokia handheld works | I set up a CDS wireless router:
IP: 131.215.113.2
SSID: cdsrana
|
|
|
42
|
Mon Apr 7 16:43:15 2008 |
Dmass | Laser | PSL | Profile of 35W PSL | I scanned the beam on the 35W laser again
(for the first time since it was fixed by
our German friends during the LSC meeting). |
|
|
41
|
Thu Apr 3 17:56:35 2008 |
Dmass | Laser | EOM | Transfer Function | Transfer function part 2:
I repeated the measurement with impedence |
|
|
40
|
Tue Apr 1 20:50:37 2008 |
Dmass | Laser | EOM | Transfer Function | (With Stefan's help) I took the transfer function
between the EOM of the PSL, and the Photodiode
on the PMC's reflected light. We looked at |
|
|
39
|
Thu Mar 27 13:25:38 2008 |
Stefan Ballmer | Laser | ISS | Modifications to ISS (D080149-00-C) | |
|
|
38
|
Fri Mar 7 15:33:14 2008 |
Dmass | Laser | EOM | EOM shipped | I packaged up and shipped the EOM back to
UF. The translation stage, also theirs, was
sent with it. Everything is marked c/o Guido |
|
|
37
|
Tue Mar 4 16:00:28 2008 |
Dmass | Laser | PSL | ISS | I moved the (non logging) ISS PD after the
PMC, and changed the mirror/camera setup
some.
|
|
|
36
|
Mon Mar 3 01:21:19 2008 |
rana | Laser | MOPA | power drift | This plot shows the power drift over the last
few days.
The SIDE_OUT16 channel is the one. The y |
|
|
35
|
Wed Feb 27 17:56:45 2008 |
Stefan Ballmer | Electronics | General | | The 2nd HP 6209B 320V power supply initially
didn't work because one of its backplane
connectors had fallen off.
|
|
|
34
|
Wed Feb 27 17:14:47 2008 |
Stefan Ballmer | Electronics | General | PZT driver powered up | - Powered up the PZT driver board using the
300V power supply (the one that's working).
- I haven't measured the noise or TF of the |
|
|
33
|
Tue Feb 26 21:05:47 2008 |
Stefan Ballmer | Laser | General | | Additionally to what Rana mentioned, there
are two more signals hooked up:
|
|
|
32
|
Tue Feb 26 19:52:08 2008 |
Rana | Electronics | CDS | channels | Stefan, Rana
We changed the cable hookup -- to check out |
|