| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13433
|
Thu Nov 16 15:43:01 2017 |
rana | Update | Optical Levers | Optical lever noise | I bet the calibration
is out of date; probably we replaced the |
|
|
13156
|
Tue Aug 1 16:05:01 2017 |
gautam | Update | Optical Levers | Optical lever tuning - cost function construction | Summary:
I've been trying |
|
|
13141
|
Tue Jul 25 02:03:59 2017 |
gautam | Update | Optical Levers | Optical lever tuning thoughts | Summary:
Currently, I am unable to engage
the coil-dewhitening filters without destroying |
|
|
13147
|
Fri Jul 28 15:36:32 2017 |
gautam | Update | Optical Levers | Optical lever tuning thoughts | Attachment #1 - Measured
error signal spectrum |
|
|
14733
|
Mon Jul 8 17:33:10 2019 |
Kruthi | Update | Loss Measurement | Optical scattering measurements | I came across a paper (see reference) where
they have used DAOPHOT, an astronomical software
tool developed by NOAO, to study the point |
|
|
7774
|
Sat Dec 1 16:58:14 2012 |
Manasa | Update | WIKI-40M Update | Optical tables | I have updated the wiki with the layout
of the out-of-vac optical tables: Updated |
|
|
3287
|
Sun Jul 25 18:47:23 2010 |
Alberto | Update | SVN | Optickle 40mUpgrade model updated to include short cavity length corrections | I uploaded an updated optickle model of
the upgrade to the SVN directory with the
optickle models (here). |
|
|
643
|
Mon Jul 7 19:15:38 2008 |
Alberto | Update | General | Optics alignement on the ABS length experiment | Today I started setting up the PLL instruments
to lock the frequency of the NPRO beam to
the IFO beam. with no need of a new alignment |
|
|
7313
|
Wed Aug 29 21:02:45 2012 |
Jenne | Update | IOO | Optics between Faraday and PRM are centered, realigned | [Jenne, Suresh, with support from Jamie
and Koji]
MC spots measured, MC1, MC3 no change. |
|
|
5729
|
Mon Oct 24 17:23:14 2011 |
SUS_Diagonalizer | Update | SUS | Optics kicked | This is a cron-elog test. No optics have been
kicked. |
|
|
5823
|
Sun Nov 6 09:39:25 2011 |
Dr. SUS | Update | SUS | Optics kicked | All suspended optics have been kicked at Sun
Nov 6 09:39:25 PST 2011. Watchdogs will
be reengaged in 5 hours. Please refrain from |
|
|
7523
|
Wed Oct 10 21:50:39 2012 |
SUS_Diagonalizer | Update | SUS | Optics kicked | All suspended optics have been kicked at Wed
Oct 10 21:50:39 PDT 2012. Watchdogs will
be reengaged in 90 minutes. |
|
|
7524
|
Thu Oct 11 00:22:58 2012 |
SUS_Diagonalizer | Update | SUS | Optics kicked | [quote]All suspended optics have been kicked
at Wed Oct 10 21:50:39 PDT 2012. Watchdogs
will be reengaged in 90 minutes. [/quote]
|
|
|
7979
|
Thu Jan 31 22:14:11 2013 |
rana | Summary | ASC | Optics lit | Gouy not Guoy:
http://www.rp-photonics.com/gouy_phase_shift.html
pronounced Goo-eee, with the emphasis |
|
|
7982
|
Fri Feb 1 12:22:27 2013 |
Zach | Summary | ASC | Optics lit | It's OK; even Siegman got it wrong---48
times.
RA: NO, stil not OK. |
|
|
13981
|
Mon Jun 18 14:32:42 2018 |
gautam | Update | PSL | Optics on AS table | Yesterday, I moved the following optics:
Lens in front of AS110
PD.
BS splitting light between |
|
|
13982
|
Mon Jun 18 15:59:17 2018 |
johannes | Update | PSL | Optics on AS table |
Quote:
|
|
|
13983
|
Mon Jun 18 16:57:54 2018 |
Koji | Update | PSL | Optics on AS table | Of course, many (but no all) of the optics
were custom-ordered back in ~2000. |
|
|
14006
|
Fri Jun 22 14:18:04 2018 |
Steve | Update | PSL | Optics on AS table |
|
|
|
10454
|
Thu Sep 4 18:30:13 2014 |
Gabriele | Summary | ASC | Optimal Gouy phase for POP QPD | Jenne asked me to simulate the signals
on POP QPD when moving different mirrors,
as a function of the Gouy phase where the |
|
|
11407
|
Tue Jul 14 10:23:27 2015 |
Ignacio | Update | General | Optimal detector array placement thoughts | Over the past few days, I've been thinking
about how to workout the details conerning
Rana's request about a 'map' |
|
|
8987
|
Thu Aug 8 18:43:12 2013 |
Sujan | Summary | PEM | Optimally subtracting signals from two seismometers. | An exercise of optimally subtracting one
seismometer signal by another using weiner
filters was done. Results have been summarized |
|
|
16965
|
Thu Jun 30 18:06:22 2022 |
Paco | Update | ALS | Optimum ALS recovery - part I | [Paco]
In the morning I took some time
to align the AUX beams in the XEND table. |
|
|
16154
|
Sun May 23 18:28:54 2021 |
Jon | Update | CDS | Opto-isolator for c1auxey | The new HAM-A coil drivers have a single
DB9 connector for all the binary inputs.
This requires that the dewhitening switching signals |
|
|
16166
|
Fri May 28 10:54:59 2021 |
Jon | Update | CDS | Opto-isolator for c1auxey | I have received the opto-isolator needed
to complete the new c1auxey system. I
left it sitting on the electronics bench |
|
|
16178
|
Thu Jun 3 17:15:17 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | As Jon wrote we need to use the NPN configuration
(see attachments). I tested the isolator
channels in the following way: |
|
|
16181
|
Thu Jun 3 22:08:00 2021 |
Koji | Update | CDS | Opto-isolator for c1auxey | - Could you explain what is the blue thing
in Attachment 1?
- To check the validity of the |
|
|
16182
|
Fri Jun 4 14:49:23 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I made a diagram (Attached). I think it
explains the blue thing in the previous post.
I don't know what is the grounding |
|
|
16183
|
Fri Jun 4 17:46:25 2021 |
unYehonathan | Update | CDS | Opto-isolator for c1auxey | I mounted the optoisolator on the DIN rail
and connected the 3 first channels
|
|
|
16184
|
Sun Jun 6 03:02:14 2021 |
Koji | Update | CDS | Opto-isolator for c1auxey | This RTS also use the BO interface with
an opto isolator. https://dcc.ligo.org/LIGO-D1002593
Could you also include the pull |
|
|
16186
|
Sun Jun 6 12:15:16 2021 |
Jon | Update | CDS | Opto-isolator for c1auxey | Since this Ocean Controls optoisolator
has been shown to be compatible, I've
gone ahead and ordered 10 more: |
|
|
16187
|
Sun Jun 6 15:59:51 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | According to the BO interface circuit board
https://dcc.ligo.org/D1001266,
PCIN wires are connected to the coil driver |
|
|
16199
|
Mon Jun 14 15:31:30 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I checked the BI situation on the HAM-A
coil driver. It seems like these are
sinking BIs and indeed need to be isolated |
|
|
16203
|
Tue Jun 15 21:48:55 2021 |
Koji | Update | CDS | Opto-isolator for c1auxey | If my understanding is correct, the (photo
receiving) NPN transistor of the optocoupler
is energized through the acromag. The LED |
|
|
16205
|
Wed Jun 16 17:24:29 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I updated the wiring diagram according
to Koji's suggestion. According to the |
|
|
16207
|
Wed Jun 16 20:32:39 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I installed 2 additional isolators in the
Acromag chassis. I set all the input channels
to PNP. I ran the digital inputs (EnableMon |
|
|
16243
|
Fri Jul 9 18:35:32 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | Following Koji's channel list review,
we made changes to the
wiring spreadsheet. |
|
|
16244
|
Mon Jul 12 18:06:25 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I edited /cvs/cds/caltech/target/c1auxey1/ETMYaux.db
(after creating a backup) and added the spare
coil driver channels. |
|
|
16263
|
Wed Jul 28 12:47:52 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | To simulate a differential output I used
two power supplies connected in series. The
outer connectors were used as the outputs |
|
|
16276
|
Wed Aug 11 12:06:40 2021 |
Yehonathan | Update | CDS | Opto-isolator for c1auxey | I redid the differential input experiment
using the DS360 function generator we recently
got. I generated a low frequency (0.1Hz) |
|
|
16635
|
Tue Feb 1 15:33:28 2022 |
Koji | Summary | BHD | Optomechanics configuration for the in-vacuum aux small optics | I've summarized the optomechanics configuration
for the in-vacuum aux small optics
It's not obvious here but the |
|
|
16640
|
Wed Feb 2 18:55:58 2022 |
Koji | Summary | BHD | Optomechanics configuration for the in-vacuum aux small optics | Here is more detail of the POP_SM4
mount assembly.
It's a combination of BA2V |
|
|
16641
|
Wed Feb 2 21:16:23 2022 |
Koji | Summary | BHD | Optomechanics configuration for the in-vacuum aux small optics | Asked Jordan to clean 2x 1.5" posts
(0.5 dia) and a washer with 1" dia.
|
|
|
15319
|
Wed May 6 00:31:09 2020 |
gautam | Update | ALS | Optomechanics during CARM offset reduction | Summary:
The apparent increase in the ALS
noise (witnessed in-loop, e.g. |
|
|
16953
|
Tue Jun 28 09:03:58 2022 |
JC | Update | General | Organizing and Cleaning | The plan for
the tools in 40m
As of right now, there are 4 tool |
|
|
5969
|
Mon Nov 21 15:47:58 2011 |
Mirko | Update | IOO | Osem loop shape | [Jenne, Mirko]
To
reiterate: We changed the OSEM loop shape |
|
|
13071
|
Fri Jun 16 23:27:19 2017 |
Kaustubh, Jigyasa | Update | Computers | Ottavia Connected to the Netgear Box | I just connected the Ottavia to the Netgear
box and its working just fine. It'll
remain switched on over the weekend. |
|
|
13065
|
Thu Jun 15 14:24:48 2017 |
Kaustubh, Jigyasa | Update | Computers | Ottavia Switched On | Today, I and Jigyasa connected the Ottavia
to one of the unused monitor screens Donatella.
The Ottavia CPU had a label saying 'SMOKED''. |
|
|
13067
|
Thu Jun 15 19:49:03 2017 |
Kaustubh, Jigyasa | Update | Computers | Ottavia Switched On | It has been working fine the whole day(we
didn't do much testing on it though).
We are leaving it on for the night. |
|
|
13068
|
Fri Jun 16 12:37:47 2017 |
Kaustubh, Jigyasa | Update | Computers | Ottavia Switched On | Ottavia had been left running overnight
and it seems to work fine. There has been
no smell or any noticeable problems in the |
|