| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14314
|
Wed Nov 21 16:48:11 2018 |
gautam | Update | COC | EY mini cleanroom setup | With Chub's help, I've setup a
mini cleanroom at EY - Attachment
#1. The HEPA unit is running on |
|
|
15374
|
Thu Jun 4 00:21:28 2020 |
Koji | Summary | COC | ITM spares and New PR3 mirrors transported to Downs for phasemap measurement | GariLynn worked on the measurement of E1800089
mirrros.
|
|
|
15401
|
Tue Jun 16 13:05:36 2020 |
Koji | Update | COC | ITM spares and New PR3 mirrors transported to Downs for phasemap measurement | ITMU01 / ITMU02 as well as the five E1800089
mirrors came back to the 40m. Instead, the
two ETM spares (ETMU06 / ETMU08) were delivered |
|
|
15625
|
Wed Oct 14 13:28:04 2020 |
Koji | Update | COC | ITM/ETM spares in Downs | The two ITM spares and two ETM spares are
together stored in the optic storage (B110)
at Downs. c/o Liyuan and GariLynn |
|
|
3193
|
Mon Jul 12 11:20:56 2010 |
Gopal | HowTo | COMSOL Tips | Intrusions (Negative Extrusions) | For the sake of future users, I have decided
to periodically add tips and tricks in using
COMSOL that I have figured out, most probably |
6x |
|
3194
|
Mon Jul 12 12:16:50 2010 |
Dmass | HowTo | COMSOL Tips | Intrusions (Negative Extrusions) | An entry on the 40m wiki page might
serve you better, and be easier to sift
through once all is said and done |
|
|
3291
|
Mon Jul 26 11:15:23 2010 |
Gopal | HowTo | COMSOL Tips | Pictures from Transfer Function Tutorial on the Wiki | The attached pictures give a brief overview
of my transfer function measurement procedure
in COMSOL. For more details, please see the |
7x |
|
3322
|
Thu Jul 29 17:11:16 2010 |
Gopal | Update | COMSOL Tips | Including Gravity in COMSOL | [Gopal, Jan]
|
|
|
3536
|
Tue Sep 7 20:44:54 2010 |
Yoichi | HowTo | COMSOL Tips | COMSOL example for calculating mechanical transfer functions | I added COMSOL example files to the 40m
svn to demonstrate how to make transfer function
measurements in COMSOL. |
|
|
8190
|
Wed Feb 27 19:27:29 2013 |
Annalisa | HowTo | COMSOL Tips | Mirror support Eigenfrequency | I studied the eigenfrequencies of
a mirror support using COMSOL.
|
|
|
8226
|
Mon Mar 4 20:03:42 2013 |
Annalisa | HowTo | COMSOL Tips | Study of mirror mount eigenfrequencies | I studied the eigenfrequencies of
a mirror mount designed with COMSOL.
I imposed fixed constraints for the |
|
|
8437
|
Wed Apr 10 15:49:22 2013 |
Annalisa | Configuration | COMSOL Tips | Yend table eigenfrequency simulation with COMSOL | I made a Simulation with COMSOL for
the Yend table. Mainly, I tried to see how
the lower eigenmode changes with the number |
|
|
15650
|
Thu Oct 29 09:50:12 2020 |
anchal | Summary | Calibration | Preliminary calibration measurement taken | I went to 40m yesterday at around 2:30
pm and Koji showed me how to acquire lock
in different arms and for different lasers. |
|
|
16128
|
Mon May 10 10:57:54 2021 |
Anchal, Paco | Summary | Calibration | Using ALS beatnote for calibration, test | Test details:
We
locked both arms and opened the shutter for
Yend green laser.
After toggling |
|
|
16315
|
Tue Sep 7 18:00:54 2021 |
Tega | Summary | Calibration | System Identification via line injection | [paco]
This morning, I spent some time
restoring the jupyter notebook server running |
|
|
16352
|
Tue Sep 21 11:13:01 2021 |
Paco | Summary | Calibration | XARM calibration noise | Here are some plots from analyzing the
C1:LSC-XARM calibration. The experiment is
done with the XARM (POX) locked, a single |
|
|
16353
|
Wed Sep 22 11:43:04 2021 |
rana | Summary | Calibration | XARM calibration noise | I would expect to see some lower frequency
effects. i.e. we should look at the timeseries
of the demod with the excitation on and off. |
|
|
16363
|
Tue Sep 28 16:31:52 2021 |
Paco | Summary | Calibration | XARM OLTF (calibration) at 55.511 Hz | [anchal, paco]
Here is a demonstration of the
methods leading to the single (X)arm calibration |
|
|
16369
|
Thu Sep 30 18:04:31 2021 |
Paco | Summary | Calibration | XARM OLTF (calibration) with three lines | [anchal, paco]
We repeated the same procedure
as before, but with 3 different lines at |
|
|
16373
|
Mon Oct 4 15:50:31 2021 |
Hang | Update | Calibration | Fisher matrix estimation on XARM parameters | [Anchal, Hang]
What: Anchal and I measured the
XARM OLTF last Thursday. |
|
|
16399
|
Wed Oct 13 15:36:38 2021 |
Hang | Update | Calibration | XARM OLTF | We did a few quick XARM oltf measurements.
We excited C1:LSC-ETMX_EXC with a broadband
white noise upto 4 kHz. The timestamps for |
|
|
10436
|
Thu Aug 28 11:02:53 2014 |
Steve | Update | Calibration-Repair | SR785 repair | SN 46,795 of 2003 is back. |
|
|
11641
|
Thu Sep 24 17:06:14 2015 |
ericq | Update | Calibration-Repair | C1CAL Lockins | Just a quick note for now: I've repopulated
C1CAL with a limited set of lockin oscillators/demodulators,
informed by the aLIGO common LSC model. Screens |
|
|
12040
|
Mon Mar 21 14:29:32 2016 |
Steve | Update | Calibration-Repair | 1W Innolight laser repair diagnoses |
|
|
|
12045
|
Thu Mar 24 07:56:09 2016 |
Steve | Update | Calibration-Repair | NO Noise Eater for 1W Innolight | 1W Innolight is NOT getting Noise Eater
as it was decided yesterday at the 40m meeting.
Corrected 3-25-2016 |
|
|
12070
|
Mon Apr 11 17:03:41 2016 |
Steve | Update | Calibration-Repair | 1W Innolight repair completed | The laser is back. Test report is in the
40m wiki as New Pump Diode Mephisto 1000 |
|
|
13456
|
Tue Nov 28 17:27:57 2017 |
awade | Bureaucracy | Calibration-Repair | SR560 return, still not charging | I brought a bunch of SR560s over for repair
from Bridge labs. This unit, picture attached
(SN 49698), appears to still not be |
|
|
14759
|
Mon Jul 15 03:30:47 2019 |
Kruthi | Update | Calibration-Repair | White paper as a Lambertian scatterer | I made some rough measurements, using the
setup I had used for CCD calibration, to
get an idea of how good of a Lambertian scatterer |
|
|
14804
|
Wed Jul 24 04:20:35 2019 |
Kruthi | Update | Calibration-Repair | MC2 pitch and yaw calibration | Summary: I calibrated MC2
pitch and yaw offsets to spot position in
mm. Here's what I did: |
|
|
15510
|
Sat Aug 8 07:36:52 2020 |
Sanika Khadkikar | Configuration | Calibration-Repair | BS Seismometer - Multi-channel calibration | Summary :
I have been working on analyzing |
|
|
227
|
Tue Jan 8 15:20:17 2008 |
Pkp | Update | Cameras | GigE update | [Tobin , Pinkesh]
Finally we got the camera doing something |
|
|
234
|
Thu Jan 10 13:45:52 2008 |
Pkp | Update | Cameras | GLIBC Error | So, I have tried to compile the camera files
which are in /cvs/cds/caltech/target/Prosilica/examples
for the past 2 days now and have been unable |
|
|
236
|
Fri Jan 11 17:01:51 2008 |
pkp | Update | Cameras | GigE again | So, here I detail all the efforts on the GigE
so far
|
|
|
245
|
Thu Jan 17 15:11:13 2008 |
josephb | Update | Cameras | Working on Malfalda | 1) I can statically compile the ListCamera
code (which basically just goes out and finds
what cameras are connected to the network) |
|
|
266
|
Fri Jan 25 11:38:16 2008 |
josephb | Configuration | Cameras | Working GiGE video on Linux - sort of | 1)I have been able to compile the SampleViewer
program which can stream the video from the
Prosilica 750C camera. This was accomplished |
|
|
267
|
Fri Jan 25 13:36:13 2008 |
josephb | Configuration | Cameras | Working GiGE video on Mafalda | Finally got the GiGE camera sample viewer
video running on Mafalda by updating to the
latest API (version 1.16 from Dec 16, 2007) |
|
|
289
|
Thu Jan 31 16:53:41 2008 |
josephb | Configuration | Cameras | Improving camera user interface | There's a new and improved version of Snap
program at the moment people are free to
play with.
|
|
|
292
|
Fri Feb 1 15:04:54 2008 |
josephb | Configuration | Cameras | Snap with looping functionality available | New GiGE camera code is available in /cvs/cds/caltech/target/Prosilica/40mCode/.
Currently only runs on Mafalda.
|
|
|
297
|
Tue Feb 5 15:32:29 2008 |
josephb | Configuration | Cameras | PMC and the GigE Camera | The PMC transmission video camera has been
removed and replaced with the GigE GC750
camera for the moment.
|
|
|
300
|
Wed Feb 6 16:50:47 2008 |
josephb | Configuration | Cameras | Regions of Interest and max frame rate | The Snap code has once again been modified
such that setting the -l option to 0 will
take images as fast as possible. Also, the |
|
|
301
|
Wed Feb 6 19:39:11 2008 |
rana | Configuration | Cameras | Regions of Interest and max frame rate | We really need to look into making the 40m
CDS network have an all GigE backbone so
that we can have cooler cameras as well as |
|
|
378
|
Fri Mar 14 12:06:29 2008 |
josephb | Configuration | Cameras | GC750 looking at ETMX while locked | The GC750 (CMOS) is currently looking at the
front of ETMX. Unfortunately, its being
routed through a 10Mbit connection (which |
|
|
379
|
Fri Mar 14 14:59:51 2008 |
josephb | Configuration | Cameras | Comparison between GC650 (CCD) and GC750 (CMOS) looking at ETMX | Attached are images taken of ETMX while locked.
The first two are 300,000 microsecond exposure |
|
|
434
|
Tue Apr 22 08:34:22 2008 |
josephb | Configuration | Cameras | Current Network Diagram | The attached network diagram has also been
added to the 40m Wiki at http://lhocds.ligo-wa.caltech.edu:8000/40m/Image_Processing_with_GigE_Cameras |
|
|
471
|
Thu May 8 16:40:36 2008 |
josephb | Configuration | Cameras | Gige Camera currently on PSL table | Andrey and myself were working on the PSL
table today, using a pickoff of a pickoff
of the main beam (adding a microscope slide |
|
|
481
|
Thu May 15 16:24:18 2008 |
josephb | Summary | Cameras | | The GC750 camera is currently looking at a
very small pickoff of the PSL output (transmission
of a Y1-1037-45-S mirror). The plan is to |
|
|
482
|
Fri May 16 14:38:50 2008 |
josephb | Summary | Cameras | Two cameras setup | I've changed the pickoff setup from yesterday
for the GigE cameras to include a 33% beam
splitter (first one I could find). The reflection |
|
|
506
|
Fri May 30 12:03:08 2008 |
josephb, Andrey | Configuration | Cameras | Head to head comparison of cameras | Andrey and myself - Joseph B. - have examined
the output of the GC650 (CCD) and GC750 (CMOS)
prosilica cameras. We did several live motion |
|
|
511
|
Mon Jun 2 12:20:35 2008 |
josephb | Bureaucracy | Cameras | Beam scan has moved | The beamscan has been moved from the Rana
lab back over to the 40m, to be used to calibrate
the Prosilica cameras. |
|
|
512
|
Tue Jun 3 02:15:29 2008 |
Andrey | Summary | Cameras | Fitting results |
There have been a lot of work going on related
to the processing of images captured by the |
|