| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3915
|
Sun Nov 14 11:56:59 2010 |
valera | Update | CDS | Test of ADC noise |
We missed |
|
|
3933
|
Tue Nov 16 15:32:18 2010 |
valera | Update | Electronics | OSEM noise at the output of the satellite box | I measured the SRM OSEM (no magnets
at the moment) noise out of the satellite
box with a SRS785 spectrum analyzer. I inserted |
|
|
4335
|
Tue Feb 22 00:18:47 2011 |
valera | Configuration | | c1ioo and c1ass work and related fb crashes/restarts | I have been editing and reloading the c1ioo
model last two days. I have restarted the
frame builder several times. After one of |
|
|
4339
|
Tue Feb 22 23:11:42 2011 |
valera | Update | | new medm screens: C1ASS.adl and C1MCASS.adl | |
|
|
4345
|
Wed Feb 23 16:34:42 2011 |
valera | Configuration | | pmc lens staged | I put the PMC last mode matching lens (one
between the steering mirrors) on a translation
stage to facilitate the PMC mode matching. |
|
|
4355
|
Fri Feb 25 01:48:54 2011 |
valera | Update | ASC | mc auto alignment status | I made several scripts to handle
the mcass configuration and sensing measurements:
- The scripts and data are in the |
|
|
4625
|
Wed May 4 13:51:51 2011 |
valera | Configuration | | Intermittent MC3 UL PD signal | The attached plot shows the 30 day trend
of the MC3 UL PD signal. The signal dropped
to zero at some point but now it is close |
|
|
4629
|
Wed May 4 15:56:09 2011 |
valera | Summary | General | PSL and MC trends | The attached plot shows 2 day trends of
the PMC and MC reflected and transmitted
power, the PSL POS/ANG QPD signals, and the |
|
|
4653
|
Fri May 6 15:42:55 2011 |
valera | Metaphysics | IOO | Input mode cleaner length and 11 MHz modulation frequency | After Kiwamu set the REFL11 phases
in the PRMI configuration (maximized PRM->REFL11I
reesponse) I tried to measure the MC length |
|
|
4659
|
Sat May 7 18:08:54 2011 |
valera | Update | IOO | MC beam spot centering script | I tried to run the scripts/senseMCdecentering
to check the centering of the MC beam spots
on the mirrors. The script (csh) produces |
|
|
4660
|
Sun May 8 16:32:52 2011 |
valera | Update | IOO | MC beam spot centering | Kiwamu told me that the CDS matrix
notation has changed and the 40m front end
code has changed since February. I changed |
|
|
4663
|
Mon May 9 09:37:51 2011 |
valera | Update | PSL | PSL and MC trends | The attached plot shows 7 day trends of
the MC and PMC power levels, PSL QPDs, and
temperature. The MC stayed locked for ~40 |
|
|
4674
|
Tue May 10 00:44:52 2011 |
valera | Update | IOO | MC2 centering | Kiwamu, Koji, Valera
We centered the beam on MC2 in pitch
by moving the MC1,2,3 in the following combination |
|
|
4685
|
Wed May 11 10:49:16 2011 |
valera | Configuration | Electronics | MC3 LL PD has no signal | Yesterday we found that MC3 OSEM LL PD
did not have a sensible signal - the readback
was close to zero and it was making MC move |
|
|
4696
|
Wed May 11 23:02:52 2011 |
valera | Update | ASS | Dither angular stabilizitaion system update | This is what was done in past two days:
- The ETMY and ITMY pitch and yaw
dofs are modulated at 40, 44, 42, 46 Hz respectively |
|
|
4709
|
Fri May 13 00:39:53 2011 |
valera | Update | ASS | c1ass update | Here the status of the dither alignment
or c1ass:
- Both pitch and yaw centering on |
|
|
4769
|
Mon May 30 23:14:27 2011 |
valera | Update | ASC | Y arm initial alignment | I closed all 8 dither loops for the Y arm
initial alignment: 2x2 centering servo (this
worked before) and 2x2 input beam servo for |
|
|
4788
|
Mon Jun 6 17:22:09 2011 |
valera | Configuration | LSC | Clipping in the X arm 1064 um trans path | I
changed optics in the ETMX transmon path
to remove clipping (which made a false QPD |
|
|
4795
|
Wed Jun 8 16:41:48 2011 |
valera | Update | ASS | X and Y arm dither alignment status | |
|
|
3897
|
Thu Nov 11 15:27:43 2010 |
valera, steve | Configuration | | ISS AOM installed | We installed the ISS AOM in the PSL.
The AOM was placed right after the EOM. The
beam diameter is ~600 um at the AOM. The |
|
|
5010
|
Thu Jul 21 09:04:59 2011 |
valera, steve | Update | SUS | oplev gains were not optimized |
Hi Steve,
I did |
|
|
12169
|
Fri Jun 10 18:16:59 2016 |
varun | Update | PSL | Realignment of pre mode cleaner | The mode cleaner was misaligned probably
due to the earthquake (the drop in the
MC transmitted value slightly after utc 7:38:52 |
|
|
12173
|
Mon Jun 13 20:01:30 2016 |
varun | Update | CDS | DAFI GUI update | Summary: I am implementing
digital audio filtering on various interferometer
signals in order to listen to the processed |
|
|
12180
|
Tue Jun 14 20:10:19 2016 |
varun | Update | CDS | DAFI GUI update | I have added Enable buttons for each of
the DSP blocks, and labels for the matrix
elements. The input matrix takes inputs from |
|
|
12185
|
Wed Jun 15 22:12:55 2016 |
varun | Update | CDS | DAFI update: stereo output | I wish to have stereo audio output for
the DAF module. Hence, there needs to be
a second output from the DAF. I added this |
|
|
12207
|
Tue Jun 21 11:26:42 2016 |
varun | Frogs | CDS | medm command not working | "medm: command not
found" error when run through |
|
|
12211
|
Wed Jun 22 10:15:45 2016 |
varun | Update | CDS | DAFI update: stereo output | I have updated the DAFI with the following
changes:
1) Separated both the channels |
|
|
12215
|
Mon Jun 27 15:12:09 2016 |
varun | Update | CDS | DAFI update: stereo output | Using an RC to BNC connector from the inner
drawer, I have added a second output cable
going from the output Fibox in the control |
|
|
12242
|
Tue Jul 5 14:12:56 2016 |
varun | Update | Electronics | Antialiasing Filter Update | I am trying to design an antialiasing filter,
which also has two switchable whitening stages.
I have designed a first version of a PCB |
|
|
12266
|
Thu Jul 7 12:44:52 2016 |
varun | Update | CDS | DAFI update | Attached is a diagram, showing the entire
(planned) signal flow of the DAF model. Some
thoughts on the implementation after discussion |
|
|
12282
|
Fri Jul 8 22:26:03 2016 |
varun | Update | CDS | DAFI Update: Changes in LSC model | I have added the control signals DARM_CTRL,
MICH_CTRL, PRCL_CTRL, SRCL_CTRL, CARM_CTRL,
XARM_CTRL, YARM_CTRL, MC_CTRL to the |
|
|
12287
|
Sun Jul 10 20:08:44 2016 |
varun | Update | CDS | DAFI Update: Changes in LSC and PEM models | I have added the PEM signals mentioned
in the previous elog as DAF inputs through
PCIE IPC, and compiled and restarted the |
|
|
12303
|
Thu Jul 14 23:38:59 2016 |
varun | Update | CDS | c1lsc FE unresponsive | Today, at around 10:30, c1lsc machine froze
and stopped responding to ping and ssh after
I compiled and restarted c1daf. I think it |
|
|
12304
|
Fri Jul 15 12:21:28 2016 |
varun | Update | CDS | c1lsc FE unresponsive | c1lsc is up and running, Eric did a manual
reboot today.
|
|
|
12307
|
Sat Jul 16 00:30:42 2016 |
varun | Update | CDS | DAFI update: Frequency warping | c1lsc unresponsive | Summary: I am trying to
implement frequency warping/pitch shifting
on the real time FE. Here is a description |
|
|
12309
|
Mon Jul 18 18:44:52 2016 |
varun | Update | CDS | c1lsc FE recovered | c1lsc FE is up and running.
Details:
2) The machine was manually rebooted. |
|
|
12319
|
Thu Jul 21 12:03:35 2016 |
varun | Update | CDS | DAFI update: Humming noise in DAFI output |
Summary: There |
|
|
12320
|
Thu Jul 21 14:27:24 2016 |
varun | Update | CDS | DAFI Update: Arbitrary Math block | Summary: I have added
an arbitrary math block to the DAFI model,
which takes two inputs, say X and Y, and |
|
|
12321
|
Thu Jul 21 15:03:13 2016 |
varun | Update | CDS | DAFI Update | 1) I have added the status summary of the
DAFI block to the main FE status overview
screen in the c1lsc cloumn. (attachment 1) |
|
|
12324
|
Thu Jul 21 22:02:35 2016 |
varun | Update | CDS | DAFI update: Frequency warping | The code for frequency warping contained
a "printf()" command, which had
caused the system to crash in one another |
|
|
6
|
Sat Oct 20 11:54:13 2007 |
waldman | Other | OMC | OMC and OMC-SUS work | [Rich, Chub, Pinkesh, Chris, Sam]
Friday the 18th was a busy day in OMC land. |
|
|
14
|
Thu Oct 25 17:52:45 2007 |
waldman | Other | OMC | OMCs with QPDs | [Rich, Chub, Pinkesh, Sam]
Yesterday we got the QPD, OTAS, and PZT cabling |
|
|
16
|
Thu Oct 25 23:35:36 2007 |
waldman | Other | OMC | Hang the OMC! | [Pinkesh, Sam]
We tried, convicted and hung the OMC today. |
|
|
19
|
Fri Oct 26 17:34:43 2007 |
waldman | Other | OMC | OMC + earthquake stops |
[Chub, chris, Pinkesh, Sam]
|
|
|
20
|
Fri Oct 26 21:48:40 2007 |
waldman | Configuration | OMC | Fiber to 056 | I set up a 700 mW NPRO in Rana's lab and launched
it onto a 50m fiber. I got a few mW onto
the fiber, enough to see with a card before |
|
|
21
|
Sat Oct 27 19:00:44 2007 |
waldman | Configuration | OMC | Hanging, locked OMC with REFL extracted. | I got the OMC locked to the fiber output today.
It was much more difficult than I expected
and I spent about 30 minutes or so flailing |
|
|
25
|
Mon Oct 29 11:07:22 2007 |
waldman | Software Installation | OMC | Software install on OMS | [Alex, Sam]
We spent a little time this morning working |
|
|
26
|
Mon Oct 29 12:20:15 2007 |
waldman | Configuration | OMC | Changed OMS filters | I changed the OMS configuration so that some
of the OMC-SUS LED channels go to a breakout
box so that we can input the PDH error signal. |
|
|
27
|
Mon Oct 29 23:10:05 2007 |
waldman | Configuration | OMC | Lost in DAQspace | [Pinkesh, Sam]
In setting up a Digital based control of |
|
|
37
|
Wed Oct 31 09:45:28 2007 |
waldman | Other | OMC | Resolution to DAQland saga | [Jay, Sam]
We did a rough accounting for the linear |
|