 Tue May 17 22:50:00 2011, Jamie, Configuration, LSC, New digital lockin added to LSC model/screen 
|
I added a lockin to the LSC model, and added it's corresponding control to the LSC screen. Here's is what I added to the LSC model:
|
 Wed May 18 22:11:31 2011, rana, Configuration, LSC, New digital lockin added to LSC model/screen
|
This is OK....but, the input matrix should come from the same place as the regular input matrix: i.e. it should be just another row |
|
Mon May 23 14:28:23 2011, kiwamu, Configuration, LSC, POY55 installed
|
Last Saturday the POY55 RFPD (see this entry) was installed on the ITMY optical bench for the trial of the DRMI locking.
Since the amount of the light coming into the diode is tiny, the DC monitor showed ~ 3 mV even when the PRC was locked to the carrier. |
|
Mon May 23 18:16:42 2011, Koji, Configuration, LSC, POY55 installed
|
The DC Transimpedance of POP55 was increased from 50 Ohm to 10010 Ohm. There is the offset of 46mV. This should be cancelled in the CDS.
Quote:
|
|
Wed May 25 19:03:59 2011, Jamie, Configuration, CDS, Update rtcds checkout of cds_user_apps with new top-level directory names.
|
The top-level subsystem subdirectories in the cds_user_apps source repository were renamed today to be all lower case. This required checking out
the new directory and updating all of the model links in /opt/rtcds/caltech/c1. Here is how I updated the cds_user_apps working tree:
cd /opt/rtcds/caltech/c1/userapps
mv trunk{,.bak}
svn update --depth=files trunk
svn update --depth=empty trunk/{cds,isi,isc,psl,sus}
I |
|
Wed May 25 19:19:11 2011, Jamie, Configuration, CDS, !!!CHECK IN YOUR MODELS!!!
|
!!!CHECK IN MODEL CHANGES!!!
Today I found three models that were modified, but not checked in
to the SVN repository:
M sus/c1/models/lib/sus_single.mdl
M isc/c1/models/c1lsc.mdl
M isc/c1/models/c1mcp.mdl
I checked in the c1lsc |
|
Wed May 25 20:12:55 2011, Jamie, Configuration, LSC, New digital lockin added to LSC model/screen
|
Quote:
This is OK....but, the input matrix should come from the same place as the regular input matrix: i.e. it should |
|
Thu May 26 17:10:21 2011, Jamie, Configuration, LSC, New digital lockin added to LSC model/screen
|
Quote:
A future improvement would be to modify the DCPD input matrix to be able to route those signals to the lockin as |
|
Tue May 31 16:07:57 2011, Larisa Thorne, Configuration, Electronics, Seismometer Box Update
|
(Continuation of this)
I plugged the circuit into the LISO program to generate the graphs below....the first graph is a plot of frequency (f, in Hz) versus gain (in dB), |
|
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 signal).
During the weekend I found that there was an offset in X arm c1ass pitch servo, which derives the signal by demodulating the arm cavity power,
coming from the beam clipping in the transmon path. |
|
Mon Jun 6 23:56:16 2011, rana, valera, Configuration, SUS, ETMX/ETMY OSEM whitening
|
We measured the OSEM PD whitening transfer function of the ETMX OSEM UL whitening stage (D000210) by comparing the input signal to the whitening amplifier (single pin LEMO monitor) to the output signal - both
were piped into the DAQ. The transfer function was close to constant 0 dB/180 deg independent of the whitening switch selection (FM1 filter engaged/disengaged) |
|
Mon Jun 13 19:26:42 2011, Jamie, Joe, Configuration, CDS, SUS binary IO chassis 2 and 3 moved from 1X5 to 1X4
|
While preping 1X4 for installation of c1lsc, we removed some old VME crates that were no longer in use. This freed up lots of space in 1X4.
We then moved the SUS binary IO chassis 2 and 3, which plug into the 1X4 cross-connect, from 1X5 into the newly freed space in 1X4. This makes the
cable run from these modules to the cross connect much cleaner. |
|
Tue Jun 14 09:24:36 2011, steve, Configuration, Photos, SUS binary IO chassis 2 and 3 moved from 1X5 to 1X4
|
Quote:
While preping 1X4 for installation of c1lsc, we removed some old VME crates that were no longer in use. This freed up lots of space |
|
Fri Jun 17 00:17:26 2011, rana, Configuration, Electronics, 2 RFPDs sent to LLO
|
Koji and I found 2 RFPD boxes to send to LLO. We've put them onto Steve's desk to be overnighted to Valera.
One of them is our old 21.5 MHz gold box RFPD from the FSS (which we don't use). The other one is a 2mm gold box one which was previously tuned
for 66 MHz. |
|
Fri Jun 24 22:35:23 2011, rana, Configuration, CDS, dataviewer broken on pianosa
|
| When I try to get minute trend, it says "word too long". |
|
Thu Jun 30 21:55:16 2011, rana, Configuration, DAQ, NDS2 conf change
|
As I recently had trouble getting all of the SUS SENSOR channels at once from NDS2, I asked J.Z. for help. He found that the number of buffers on mafalda
was set to only allow a small amount of data to be requested at one time.
He's going to have to figure out a more permanent fix, but for now he's increased the data buffer size to allow somewhat larger chunks to be gotten. |
|
Mon Jul 11 10:10:31 2011, Ishwita, Configuration, , AA board
|
The AA board shown in attachment 1 will be used in the seismometer hardware setup. A cartoon of this setup is shown in attachment 2.
BNC connectors are required for the seismometer breakout boxes. So the four-pin LEMO connectors present in the AA board were removed and panel
mount BNC connectors were soldered to it. Red and blue colored wires were used to connect the BNC connectors to the board. Red wire connects the center |
|
Sat Jul 16 18:54:05 2011, Ishwita, Manuel, Configuration, Electronics, AA board
|
We fixed the anti-aliasing board in its aluminum black box, the box couldn't be covered entirely because of the outgoing wires of the BNC connectors,
so we drilled additional holes on the top cover to slide it backwards by 1cm and then screw it.
We had to fix the AA board box in rack 1X7, but there wasn't enough space, so we tried to move the blue chassis (ligo electro-optical fanout chassis |
|
Wed Jul 27 15:49:13 2011, jamie, Configuration, CDS, dataviewer now working on pianosa
|
| Not exactly sure what the problem was, but I updated to the head of the SVN and rebuilt and it seems to be working fine now. |
|
Fri Aug 12 16:42:51 2011, Yoichi, Configuration, LSC, LSC Feed Forward Compensator
|
I've been working on adding feed forward (FF) paths to our LSC code.
So far, I've made a basic feed forward functionality connected
to the feedback path of the LSC model.
|
|
Fri Aug 12 16:50:37 2011, Yoichi, Configuration, CDS, FE Status screen rearranged
|
I rearranged the FE_STATUS.adl so that I have a space to add c1ffc in the screen.
So, please be aware that the FE monitors are no longer in their original positions
in the screen. |
|
Fri Aug 12 17:05:22 2011, Manuel, Ishwita, Configuration, PEM, STS2 Cable configuration
|
The WWF_M connector is the end of the STS2 seismometer orange cable and the S1 connector is the end of the gray 26-pin-cable
|
|
Mon Aug 22 20:37:43 2011, Anamaria, Configuration, RF System, Plan for install of 3f PDs
|
I made a quick sketch of how to include two more RF PDs on the REFL beam, given the space we have on the table. We want to install REFL33 and REFL165,
3f signals for the the two modulation frequencies we are using. The point is to make the distance from first beam splitter the same to all PDs so that
we can use only one lens before this BS to make the beam the right size. Currently there are 2 PDs on the refl beam, REFL11 and REFL55, predictably. So |
|
Mon Aug 29 16:27:34 2011, Manuel, Configuration, SUS, SUS Summary Screen
|
I edited the C1SUS_SUMMARY.adl file and set the channels in alarm mode to show the values in green, yellow and
red according to the values of the thresholds (LOLO, |
|
Mon Sep 12 18:45:04 2011, Anamaria, Configuration, LSC, AP table current layout
|
Before we install the REFL 3f PDs I made a drawing of the current table layout, since there has been no update lately. Once I've incorporated the two
extra PDs (now seen sitting bottom left), I will update the drawing and post in the wiki as well. |
|
Mon Sep 12 23:45:14 2011, Suresh, Configuration, Computer Scripts / Programs, StripTool does not scale properly on Pianosa
|
When I run StripTool on Pianosa, I get the following message
==== StripTool Xt Warning Handler ====
warning: Axis: minVal is greater than or equal to maxVal |
|
Wed Sep 14 01:19:20 2011, Anamaria, Configuration, LSC, 3f PD Install in Progress
|
I have reconfigured the refl beam path on the AP table to include REFL33 and REFL165. Would be done if we hadn't prepared P BSs instead of S, which required
some serious digging to find two others. And if someone hadn't stolen our two 3m SMA cables that Keiko and I made on our previous visit and I had
left with the 3f PDs. I don't expect them to reappear but if they do, it would be grand. |
|
Tue Sep 20 20:58:35 2011, Anamaria, Configuration, LSC, New AP Table Drawing
|
As promised, I have made a final AP table drawing, including the MC camera relocation changes by Kiwamu. I have posted it in the wiki on the tables list,
and on the AP table page I've attached the inkscape .svg I used to make it, if someone needs to do small modifications.
Attached is a pdf version of it. |
|
Fri Oct 7 22:41:05 2011, Koji, Configuration, General, Script backup fixed
|
Script backup regularly runs on op340m by crontab,
but the true backup were not taken since Oct 16, 2010
as the backup program was looking at the old script directory. |
|
Tue Oct 18 21:19:18 2011, rana, Configuration, IOO, WFS disabled in SUS
|
I found that the MC WFS had large offset control signals going to the MC SUS. Even though the input switch was off, the integrators were holding the
offset.
I have disabled the ASCPIT outputs in the MC SUS. Suresh is going to fix the MC autolocker script to gracefully handle the OFF and ON and |
|
Tue Oct 18 22:47:09 2011, Suresh, Configuration, IOO, MC autolocker script edited to shutdown and restart WFS loops
|
Quote:
I found that the MC WFS had large offset control signals going to the MC SUS. Even though the input switch was off, |
|
Mon Nov 14 21:22:48 2011, rana, Configuration, Computers, primetime RSYNC slowing down NODUS
|
nodus:elog>w; who ; date
9:20pm up 44 day(s), 5:14, 5 users, load average: 0.29, 1.04, 1.35
User tty login@ idle JCPU PCPU |
|
Wed Nov 23 14:47:14 2011, Jenne, Configuration, Environment, AC in the IFO room was off
|
I turned it back on, maybe around 11am? Definitely a little while before the 12:30 meeting.
EDIT by KI:
Sorry, it's me. I was checking if AC was doing something bad on the ALS noise. |
|
Wed Dec 21 14:23:08 2011, rana, Configuration, SUS, Hysteresis in suspensions?
|
While discussing the suspension hysteresis measurements, Koji, Kiwamu, and I realized that the suspension wire standoff is aluminum, whereas the standoff
for the LIGO LOS are using
quartz. |
|
Thu Jan 12 21:22:16 2012, Leo Singer, Configuration, WIKI-40M Update, Unable to create Wiki page
|
I can't create a new page on the 40m wiki. The page that I was trying to create is
http://blue.ligo-wa.caltech.edu:8000/40m/Stewart
I get this message when I try to save the new page: |
|
Thu Jan 12 23:13:42 2012, Koji, Configuration, WIKI-40M Update, Unable to create Wiki page
|
Quote:
I can't create a new page on the 40m wiki. The page that I was trying to create is |
|
Sat Jan 14 00:50:08 2012, rana, koji, Configuration, IOO, Towards coating thermal noise measurement with RefCav / MC beat
|
Koji asked aloud tonight if we could measure
the coating thermal noise of the refcav optics by beating the refcav light with the MC_TRANS light. Then we looked at our calculations for the noises:
Displacement noise of T=200ppm silica/tantala coating on a 1" silica substrate with a 300 micron beam |
|
Tue Jan 17 03:10:27 2012, kiwamu, Configuration, IOO, rotated lambda/2 plate
|
I have slightly rotated the lambda/2 plate, which is used for attenuating the REFL beam's power on the AS table
because the plate had been at an unusual angle for investigation of the glitches since last Thursday.
It means the laser power going to the coating thermal noise setup has also changed. Just keep |
|
Fri Feb 3 19:54:21 2012, rana, Configuration, IOO, MC trans awry
|
As usual, I noticed several bad things within 30 seconds of sitting in front of the workstation. Today its that there are OFF or missing filters on the
MC TRANS.
is this the normal state? Screenshot attached. |
|
Fri Feb 3 19:57:26 2012, rana, Configuration, SUS, PSL Shutter closed for SUS hysteresis test
|
Fri Feb 03 19:57:20 2012
Fri Feb 03 20:25:19 2012 : Aligned all SUS to center their OL beams
Fri Feb 03 20:29:21 2012: Aligned all SUS to make OL_PIT = 0.5 |
|
Fri Feb 3 20:58:56 2012, Steve, Configuration, General, Illuminator Picture
|
| |
|
Mon Mar 5 23:47:15 2012, keiko, Configuration, LSC, ND2 at REFL OSA
|
ND filter ND3 (which is at the REFL port to
the REFL OSA) is removed. Don't forget to put it back when you restore PRM!!! |
|
Tue Mar 6 16:06:15 2012, Jenne, Configuration, SUS, PRM watchdog tripped
|
Quote:
ND filter |
|
Thu Mar 15 04:04:23 2012, Koji, Configuration, Locking, PRC Matching issues
|
Kiwamu and Koji
We found that the intra-cavity mode of the PRC is not round although it was obvious even with the DARK and REFL port images.
We need to review the mode matching situation. |
|
Tue Mar 27 21:37:51 2012, keiko, Configuration, IOO, Beam Profile measurement: IPPOS beam 9x
|
From the mode measurement I and Suresh have done yesterday, I calculated what beam size we expect at ETM ((1) upper Fig.1) and at ETM after
one bounce ((2) lower Fig.1).
|
|
Thu Mar 29 20:13:21 2012, jamie, Configuration, PEM, PEM_SLOW (i.e. seismic RMS) channels added to fb master
|
I've added the PEM_SLOW.ini file to the fb master file, which should give us the slow seismic RMS channels when the framebuilder is restarted. Example
channels:
[C1:PEM-RMS_ACC6_1_3]
[C1:PEM-RMS_GUR2Y_0p3_1]
[C1:PEM-RMS_STS1X_3_10]
etc.
I also updated the path to the other _SLOW.ini files. |
|
Wed Apr 4 13:25:29 2012, jamie, Configuration, PEM, PEM_SLOW (i.e. seismic RMS) channels aquiring
|
Quote:
I've added the PEM_SLOW.ini file to the fb master file, which should give us the slow seismic RMS channels when the framebuilder is restarted. |
|
Thu Apr 5 18:24:55 2012, Den, Configuration, Adaptive Filtering, oaf starts to work
|
Today I tried to make the lms filter to work online. I played around with the signals (GUR1_X and MC_F) to pre-whiten them and in the end the following
configuration worked out:
1. mu = 0.03, tau = 1e-5, downsample=8, nCoeff = 4000, delay = 5 (sample-and-hold delay is not included in the new code, it should be added |
|
Tue May 22 11:45:12 2012, Jamie, Configuration, CDS, Please remember to commit SVN changes
|
Hey, folks. Please remember to commit all changes to the SVN in a timely manor. If you don't, multiple commits will get lumped together and
we won't have a good log of the changes we're making. You might also end up just loosing all of your work. SVN COMMIT when you're done!
But please don't commit broken or untested code. |
|
Fri May 25 16:58:54 2012, Jamie, Configuration, Computers, .bashrc for workstations
|
I have setup a shared .bashrc for all the workstations that is symlinked to the normal location on all machines:
controls@rossa:~ 0$ ls -al /home/controls/.bashrc
lrwxrwxrwx 1 controls controls 23 2012-05-25 15:37 /home/controls/.bashrc -> /users/controls/.bashrc
controls@rossa:~
0$
This should help simplify maintenance considerably. Editing that file on one machine will edit it for all. |