| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2492
|
Sat Jan 9 11:07:30 2010 |
Alberto | Update | LSC | Problems trying to lock the arms |
|
|
|
536
|
Tue Jun 17 22:00:53 2008 |
John | HowTo | PSL | Problems turning MZ servo on/off | We were unable to toggle the MZ servo on/off
(Blank/Normal) from MEDM. Pushing on the
Xycom board and cables changed the fault |
|
|
9160
|
Wed Sep 25 19:34:51 2013 |
rana | Update | SUS | Problems with ETMY Optical Lever | I went down to investigate the issue with
the extra noise that I found in the ETMY
optical lever yesterday. There were several |
|
|
9165
|
Thu Sep 26 11:00:51 2013 |
Steve | Update | SUS | Problems with ETMY Optical Lever | We are out of JDSU-Uniphase 1103P heads.
I'm ordering some right now. I'm planning
to make some corrections on Rana's list tomorrow |
|
|
9166
|
Thu Sep 26 21:55:08 2013 |
rana | Update | SUS | Problems with ETMY Optical Lever | Not so fast! We need to plan ahead of time
so that we don't have to repeat this ETMY
layout another dozen times. Please don't |
|
|
12427
|
Sun Aug 21 17:21:22 2016 |
Praful | Update | Electronics | Problems with PCB Circuit | For the past week, I've been trying
to make a soldered amplifier circuit to use
in a prototype box, However, I've been |
18x |
|
56
|
Thu Nov 1 20:03:00 2007 |
Andrey Rodionov | Summary | Photos | Procedure "Drop and Drag" in pictures | |
|
|
15462
|
Thu Jul 9 16:02:33 2020 |
Jon | HowTo | CDS | Procedure for setting up BHD front-ends | Here is the procedure for setting up the
three new BHD front-ends (c1bhd, c1sus2,
c1ioo - replacement). This plan is based |
|
|
5464
|
Mon Sep 19 16:44:16 2011 |
Keiko | HowTo | LSC | Procedure for the demodulation board check | Here
I note the procedure for the demodulation
board orthogonality check for the future |
|
|
9573
|
Fri Jan 24 12:44:25 2014 |
Gabriele | HowTo | LSC | Procedure to measure PRC length | Here is how to measure the PRC length with
a set of distance measurements in the optical
setup. |
8x |
|
9574
|
Fri Jan 24 13:10:12 2014 |
Jamie | HowTo | LSC | Procedure to measure PRC length |
|
|
|
9575
|
Sat Jan 25 21:09:16 2014 |
gabriele | HowTo | LSC | Procedure to measure PRC length | I know the drawing is wrong.
I put random distances, not realistic ones,
and I did not try to get something close |
|
|
825
|
Mon Aug 11 15:07:49 2008 |
josephb | Configuration | Computers | Procyon aka fb40m switched to new switch | I've connected Procyon to the Prosafe 24 port
switch with a new, labeled Cat6 cable. Quick
tests with dataviewer shows that its working. |
|
|
15802
|
Wed Feb 10 21:14:03 2021 |
gautam | Update | Electronics | Production version of the HV coil driver tested | Summary:
I did what I consider to be a comprehensive
set of tests on the production version of |
|
|
15846
|
Fri Feb 26 16:31:02 2021 |
gautam | Update | Electronics | Production version of the HV coil driver tested with KEPCO HV supplies | Koji asked me to test the production version
of the coil driver with the KEPCO HV supplies.
See |
|
|
15847
|
Fri Feb 26 20:20:43 2021 |
Koji | Update | Electronics | Production version of the HV coil driver tested with KEPCO HV supplies | This is very disappointing. Even with KEPCO
linear supply with the improved HV driver
circuit, the noise level is significantly |
|
|
15848
|
Sat Feb 27 17:25:42 2021 |
gautam | Update | Electronics | Production version of the HV coil driver tested with KEPCO HV supplies | I will try the test of switching out KEPCOs
one at a time for the HP. Given that the
passive RC filter doesn't filter |
|
|
16148
|
Thu May 20 16:56:21 2021 |
Koji | Update | Electronics | Production version of the HV coil driver tested with KEPCO HV supplies | HP HV power supply ( HP6209
) were returned to Downs |
|
|
17107
|
Fri Aug 26 12:46:07 2022 |
Cici | Update | General | Progress on fitting PZT resonances | Here is an update of how fitting the resonances
is going - I've been modifying parameters
by hand and seeing the effect on the fit. |
|
|
13939
|
Mon Jun 11 13:55:33 2018 |
keerthana | Update | General | Project Updates | As of now, I have made the codes needed
to sweep the marconi frequency for taking
the cavity scan data, the photo diode at |
|
|
15226
|
Wed Feb 26 21:43:48 2020 |
Jon | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | To supplement the material presented during
the BHD review, I've put together a projected
noise budget for the 40m. Note these are |
|
|
15228
|
Wed Feb 26 22:09:52 2020 |
gautam | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | The quantum noise curves here are not correct.
c.f. amplitude quadrature noise
budget. |
|
|
15241
|
Mon Mar 2 23:49:03 2020 |
Jon | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | Updated noise budget curves, now computed
using the latest version of pygwinc. This
resolves the inconsistency between the gwinc |
|
|
15244
|
Tue Mar 3 18:11:05 2020 |
Jon | Summary | BHD | Projected IFO noise budget, post-BHD upgrade | Revised noise estimates, correcting a couple
of factor of 2 and factor of pi errors found
in the coil driver noise calculation. Also |
|
|
6186
|
Wed Jan 11 21:35:33 2012 |
Max De Jong | Update | General | Projector | I finished mounting the new projector.
The projector and computer monitor now display
information. |
|
|
4235
|
Tue Feb 1 15:09:41 2011 |
Koji | Omnistructure | General | Projector - fixed | The projector in the controls room has
been fixed the orange blinking of the status
LED. |
|
|
8682
|
Wed Jun 5 15:55:16 2013 |
Steve | Update | General | Projector - lightbulb ordered |
|
|
|
8688
|
Fri Jun 7 17:12:46 2013 |
gautam | Update | General | Projector - lightbulb replaced |
|
|
|
8690
|
Fri Jun 7 23:44:54 2013 |
Koji | Update | General | Projector - lightbulb replaced | http://nodus.ligo.caltech.edu:8080/40m/7885 |
|
|
9504
|
Fri Dec 20 17:41:25 2013 |
Steve | Update | General | Projector - lightbulb replaced | The lamp lasted for 4,622 hours.
This time I purchased just the bare
lamp itself . The housing doubles the price. |
|
|
8675
|
Wed Jun 5 10:22:12 2013 |
Manasa | Update | General | Projector - viewsonic | Update: We don't have our BIG screen |
|
|
6507
|
Sat Apr 7 02:01:29 2012 |
Mike J. | Update | Computers | Projector Cable Management | I replaced the projector video and power
cables with longer ones, and zip-tied them
to the ceiling and wall so they don't block |
|
|
12913
|
Tue Mar 28 16:47:40 2017 |
Steve | Update | safety | Projector bulb is out again | Three replacement
bulbs ordered
Rana can discribe |
|
|
12927
|
Tue Apr 4 11:24:21 2017 |
Steve | Update | safety | Projector bulb is out again | Shipped out for repair.
|
|
|
12843
|
Tue Feb 21 17:05:14 2017 |
Steve | Update | General | Projector lamp replaced | This bulb was
blown out on Feb 4, 2017 after 2 months
of operation. |
|
|
14046
|
Mon Jul 9 12:36:32 2018 |
pooja | Update | General | Projector light bulb blown out | Projector light bulb blown out today. |
|
|
14739
|
Tue Jul 9 18:17:48 2019 |
gautam | Update | General | Projector lightbulb blown out | Last documented
replacement in Nov 2018, so ~7 months, which
I believe is par for the course. I am disconnecting |
|
|
14743
|
Wed Jul 10 14:55:32 2019 |
Koji | Update | General | Projector lightbulb blown out | In fact the projector is still working.
The lamp timer showed ~8200hrs. I just reset
the timer, but not sure it was the cause |
|
|
14752
|
Thu Jul 11 16:22:54 2019 |
Kruthi | Update | General | Projector lightbulb blown out | I heard a popping sound in the control
room; the projector lightbulb has blown out. |
|
|
14777
|
Fri Jul 19 15:51:55 2019 |
gautam | Update | General | Projector lightbulb blown out | [chub, gautam]
Bulb replaced. Projector is back
on. |
|
|
12837
|
Fri Feb 17 20:04:43 2017 |
Koji | Update | General | Projector not functional / Zita partially working | Koji, Gautam, Johannes
We quickly checked the situation
of the projector in the control room. |
|
|
13496
|
Tue Jan 2 16:24:29 2018 |
gautam | Update | safety | Projector periodically shuts itself off | I noticed this behaviour since ~Dec 20th,
before the power failure. The bulb itself
seems to work fine, but the projector turns |
|
|
14516
|
Fri Apr 5 00:33:58 2019 |
gautam | Update | ALS | Promising IR ALS noise | Summary:
I set up a free-space
beat on theNW side of the PSL table between |
|
|
5020
|
Fri Jul 22 17:01:41 2011 |
Iron Man | Frogs | General | Proof that Alberto lived through his Iron Man! | |
|
|
13717
|
Thu Mar 29 12:03:37 2018 |
Jon Richardson | Summary | General | Proof-of-Concept SRC Gouy Phase Measurement | I've been developing an idea for making
a direct measurement of the SRC Gouy phase at
RF. It's a very different approach from |
|
|
8748
|
Tue Jun 25 22:57:01 2013 |
Charles | Update | ISS | Proposed ISS for CTN Experiment | Following Tara's noise
budget, I have developed the following
ISS, whose transfer function was computed |
|
|
8799
|
Wed Jul 3 20:51:43 2013 |
Charles | Update | ISS | Proposed ISS for CTN Experiment - Altium Schematic | After familiarizing myself with Altium,
I drew up the attached schematic for the
ISS to be used in the CTN experiment. The |
|
|
13337
|
Wed Sep 27 23:44:45 2017 |
gautam | Update | ALS | Proposed PM measurement setup | Attachment #1 is
a sketch of the proposed setup to measure
the PM response of the EX NPRO. Previously, |
|
|
8649
|
Tue May 28 17:00:50 2013 |
Jenne | Update | ASC | Proposed POP path, to be installed this evening | I have mounted 2 2" G&H high reflective
mirrors, to be used in the new POP path.
Manasa and Annalisa are doing green things |
|
|
13686
|
Mon Mar 19 07:37:00 2018 |
Angelina Pan | Summary | | Proposed QPD Optical Arrangement | I am currently working on an optical arrangement
consisting of a QPD that measures the fluctuations
of an incoming HeNe laser beam that |
|