| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
179
|
Tue Jun 29 11:45:47 2010 |
Frank | HowTo | NoiseBudget | unit converter | http://www.matweb.com/tools/unitconverter.aspx |
|
|
2400
|
Tue Aug 27 18:53:15 2019 |
rana | Misc | FSS | up to date schematics | I'm skeptical of your
FSS changes over the past year. Can you please |
|
|
2407
|
Fri Aug 30 18:25:31 2019 |
anchal | Misc | FSS | up to date schematics | All details regarding TTFSS boxes present
in CTN has been updated at this page in ATFWiki
https://nodus.ligo.caltech.edu:30889/ATFWiki/doku.php?id=main:experiments:psl:ttfss |
|
|
813
|
Tue Feb 7 20:10:34 2012 |
Tara, Frank | DailyProgress | Schedule | update | list of
finished items: |
|
|
851
|
Tue Feb 28 22:50:11 2012 |
Frank | Notes | Schedule | update | The following tasks will be finished within
the next 24h:
aligning both cavities
|
|
|
494
|
Fri Feb 11 19:45:49 2011 |
Frank | Notes | BEAT | updated diagram of current cable delay setup | |
|
|
114
|
Tue May 4 03:40:00 2010 |
rana | Laser | RC noise | updated noise budget | code is in SVN |
|
|
733
|
Tue Nov 15 18:53:25 2011 |
tara | Notes | NoiseBudget | updated number for everything | A list of useful numbers for noise budget
calculation.
|
|
|
117
|
Fri May 7 15:51:43 2010 |
Frank | Misc | RefCav | updated schematic for new setup | |
|
|
267
|
Tue Aug 10 01:10:35 2010 |
Frank | Summary | RefCav | updated schematics of the setup | entire setup (simplified version):
|
|
|
840
|
Fri Feb 24 21:59:44 2012 |
Tara, Frank | DailyProgress | Vacuum | upgrades installed - pumping started | we've installed:
the new stack -see earlier
post with measured TF
both |
|
|
694
|
Wed Oct 5 21:33:22 2011 |
Frank | Notes | Seismic | valve/regulator replaced | had to replace one of the valves/regulators
of the table. It started releasing air after
a few minutes without any reason. Adjusting |
|
|
1091
|
Tue Jan 22 21:01:38 2013 |
tara | DailyProgress | Vacuum | vented screws for vac use are cleaned | I clean the vented screws and peek pieces
for cavity mount with ultra sonic bath, I'll
check if I need to bake them or not. |
|
|
735
|
Thu Nov 17 23:30:19 2011 |
tara | Notes | NoiseBudget | vertical seismic coupling to beat noise | TFs between 1)vertical seismic and
beat, 2) v seismic and ACAV feedback,
and 3) v_seismic and TTFSS feedback |
|
|
741
|
Wed Nov 30 19:00:42 2011 |
tara | Notes | NoiseBudget | vertical seismic coupling to beat noise | From 40m
page, COMSOL FEA gives us the coupling
(from vertical seismic to frequency noise |
|
|
912
|
Fri Apr 13 03:15:12 2012 |
koji,frank,tara | DailyProgress | optic | vibration damping on optics | We tried to damp mechanical peaks from
each optics. For now, by putting a rubber
piece on a mirror mount can suppress mechanical |
|
|
915
|
Sat Apr 14 06:03:23 2012 |
frank,tara | DailyProgress | optic | vibration damping on optics | We are damping most of the optics
with rubber cones. There are a few peaks
that we still could not find their origins. |
|
|
916
|
Mon Apr 16 02:20:58 2012 |
tara | DailyProgress | optic | vibration damping on optics | I measured beat signal, after damping most
of the optics, realigning the beams to the
cavities, measured the slope of error signals |
|
|
921
|
Mon Apr 16 22:02:08 2012 |
tara | DailyProgress | optic | vibration damping on optics | I forgot to change the code to disable
the air springs, now the seismic coupling
makes more sense. |
|
|
923
|
Wed Apr 18 00:49:07 2012 |
tara | DailyProgress | optic | vibration damping on optics | I planned to measure the beat at night
with the air springs activated, but the power
went out around 11:45 pm. I think the temperature |
|
|
933
|
Mon Apr 23 22:06:14 2012 |
tara | Notes | Purchases | vibration isolators (table legs) | I'm looking for the new table legs. The
height will be 13.5". The plate that
connects to the table will have 3 holes, |
|
|
937
|
Wed Apr 25 10:23:34 2012 |
Frank | Notes | Purchases | vibration isolators (table legs) | We have "Pneumatic Vibration Isolators
with Automatic Re-leveling". Height
is 16in from top to bottom, so that would |
|
|
941
|
Thu Apr 26 12:15:13 2012 |
Frank | Notes | Purchases | vibration isolators (table legs) | The price for the custom made legs are
$ 9295, and for the standard 16" are
$ 3710 |
|
|
1057
|
Tue Oct 9 15:12:57 2012 |
tara | Notes | Purchases | vibration isolators (table legs) | The table is not floated. Either the legs
are broken, or there is a leak in the tube
system. I think it is likely that one (or |
|
|
942
|
Thu Apr 26 16:57:33 2012 |
steve | Notes | Purchases | vibration isolators (table legs) in 40m |
|
|
|
944
|
Fri Apr 27 08:57:38 2012 |
steve | Notes | Purchases | vibration isolators (table legs) in 40m | Those are the ones we are using right now
and break after some while because they are
too old (the rolling rubber diaphragm is |
|
|
193
|
Wed Jun 30 15:51:05 2010 |
Frank | HowTo | NoiseBudget | view factor for two cylinders to calculate heat transfer via radiation | view factor for two cylinders to |
|
|
1004
|
Wed Jun 27 17:47:29 2012 |
tara | Notes | Purchases | voltage variable attenuator | voltage
variable attenuator
This will be used for ISS in ACAV |
|
|
1556
|
Wed Jul 29 15:25:05 2015 |
rana | DailyProgress | Environment | water shutoff | Saturday: 4 AM - 12 PM |
|
|
160
|
Mon Jun 14 10:16:54 2010 |
tarac | Misc | Other | weird TF from PMC servo | Since the
VCO has been borrowed, I decide to work on
RefCav path again. To optimize the RefCav |
|
|
426
|
Fri Dec 10 18:14:47 2010 |
tara | DailyProgress | Foam | widen in-out holes on the foam box | I widen the beam holes on the outer foam
box. Now all the holes are ~ 0.75"
in diameter. |
|
|
257
|
Fri Aug 6 00:43:09 2010 |
Frank | Summary | Computers | wifi bridges configured | as Mott
can't finish the installation of the wifi
bridges for the gpib-to-ethernet adapters |
|
|
919
|
Mon Apr 16 16:21:01 2012 |
tara | Notes | optic | windows for vacuum chamber | I'm checking the properties/prices/availability
of window for the vacuum chamber.
|
|
|
922
|
Tue Apr 17 19:51:54 2012 |
tara | Notes | optic | windows for vacuum chamber | If we go with plan2,
1)window and flange
I think the window size |
|
|
926
|
Thu Apr 19 03:12:23 2012 |
tara | Notes | optic | windows for vacuum chamber |
I'm searching DCC for window/viewport
examples. The following drawings give me |
|
|
931
|
Sun Apr 22 23:09:38 2012 |
tara | Notes | optic | windows for vacuum chamber | For small window option, I can either have
it made from scratch ( based on LIGO's drawing)
or buy the commercial windows from Thorlabs. |
|
|
932
|
Mon Apr 23 16:52:16 2012 |
tara | Notes | optic | windows for vacuum chamber | I asked Steve about the choices, he thought
the Thorlabs window should be ok for us.
What |
|
|
938
|
Wed Apr 25 10:44:29 2012 |
Frank | Notes | optic | windows for vacuum chamber | I don't know how you gonna make the knife
edge on the 10" flange of centered and
wedged! If you put the small CF flanges on |
|
|
940
|
Thu Apr 26 08:35:57 2012 |
steve | Notes | optic | windows for vacuum chamber |
|
|
|
943
|
Fri Apr 27 08:46:24 2012 |
Frank | Notes | optic | windows for vacuum chamber | cavity mirrors are parallel to the end
surface of the chamber (not completely, but
pretty close; changes every time we touch |
|
|
949
|
Tue May 1 20:37:16 2012 |
tara | Notes | optic | windows for vacuum chamber | I got the reply from Thorlab the flange
can't accept the thicker optical windows.
So I think we have to make our own custom |
|
|
960
|
Fri May 11 17:52:17 2012 |
tara | Notes | optic | windows for vacuum chamber | Nice reference for O-ring + groove design.
I'll put it on CTN wiki as well.
|
|
|
964
|
Wed May 16 22:27:13 2012 |
tara | Notes | optic | windows for vacuum chamber | I finished the drawing for new vacuum windows.
The o-ring for the windows will be #223 (1/8"
thickness). I'll consult with Steve one more |
|
|
969
|
Mon May 21 16:53:38 2012 |
tara | Notes | optic | windows for vacuum chamber | I edited the drawing for 10"
flange. The wedge surfaces for 2" windows
are tilted by 2 degrees sideway. |
|
|
971
|
Wed May 23 15:04:53 2012 |
steve | Notes | optic | windows for vacuum chamber |
2" optics with 2
degrees of wedge will have 0.375" thickness |
|
|
1038
|
Thu Aug 9 16:52:09 2012 |
tara | Notes | Safety | wooden cabinet mounted to the wall | The wooden cabinet is mounted to the wall
as required by PMA. |
|
|
2271
|
Wed Dec 26 14:09:29 2018 |
anchal | Notes | EPICS | ws1 unable to read/write on some EPICS channels | ws1 is unable to read and write on some
EPICS channels while I can see these channels
in fb4 or acromag1. These channels are: |
|
|
2091
|
Wed Feb 14 17:43:30 2018 |
Craig | DailyProgress | Computers | ws3 hosting beatnote ASDs online | I have installed apache2 on ws3 and made
dailyNoisebudgetPlotter.py save Beatnote_CurrentASD.png |
|
|
2090
|
Wed Feb 14 02:21:55 2018 |
Craig | DailyProgress | BEAT | ws3 is making beatnote ASDs every five minutes | Made crontab on ws3 make calibrated beatnote
spectra every 5 minutes. One example
is below. |
|
|
1911
|
Mon Sep 11 21:02:46 2017 |
awade | DailyProgress | Computers | ws3: fixing ligo cds tools and moving IP address | For some reason medm and striptool were
unable to access channels on ws3. At
the time I built the computer last week I |
|