| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2181
|
Thu Nov 5 16:24:59 2009 |
Koji | Update | CDS | ETMY CDS test stuff | Joe, Peter, Jay, Koji, Rana
We put the new CDS stuff at Y end
1Y9 rack. |
|
|
1321
|
Wed Feb 18 21:03:22 2009 |
rana | Update | Cameras | ETMY Camera work not elogged! | The control room video is showing us a
false ETMY image. Who worked on the ETMY
camera or video today??!! |
|
|
14075
|
Tue Jul 17 01:07:40 2018 |
gautam | Update | SUS | ETMY EQ stops | For the heater setup on EY table, I EQ-stopped
ETMY. Only |
|
|
14630
|
Wed May 22 11:53:50 2019 |
gautam | Update | SUS | ETMY EQ stops backed out | Yesterday we noticed that the POS and SIDE
eigenmodes were degenerate (with 1mHz spectral
resolution). Moreover, the YAW peak had shifted |
|
|
14629
|
Tue May 21 21:33:27 2019 |
gautam | Update | SUS | ETMY HR face cleaned | [koji,
gautam]
We executed this plan. Photos are |
|
|
4057
|
Wed Dec 15 13:36:44 2010 |
josephb | Update | CDS | ETMY IO chassis update | I gave
Alex a sob story over lunch about having
to go and try to resurrect dead VME crates. |
|
|
4058
|
Wed Dec 15 14:23:32 2010 |
Koji | Update | CDS | ETMY IO chassis update | Great!
I wish this board works fine at least for
several days... |
|
|
14625
|
Mon May 20 17:12:57 2019 |
gautam | Update | SUS | ETMY LL adjustment | Following the observation that the response
in the LL shadow sensor was lower than that
of the others, I decided to pull it out a |
|
|
12349
|
Thu Jul 28 17:48:17 2016 |
gautam | Update | General | ETMY LR magnet broke off | While ETMX magnets were curing, I wanted
to try and suspend ETMY in the endchamber,
put in the OSEMS and see if the magnets aligned |
|
|
14447
|
Mon Feb 11 16:38:34 2019 |
gautam | Update | LSC | ETMY OL calibration updated | Since we changed the HeNe, I updated the
calibration factors, and accepted the changes
in the SDF. |
|
|
11667
|
Mon Oct 5 11:25:21 2015 |
ericq | Update | SUS | ETMY OL laser dead | Gautam alerted me that the Y arm looked
like it was being dithered, even though the
ASS was turned off. I found that the ETMY |
|
|
11668
|
Mon Oct 5 16:41:22 2015 |
Steve | Update | SUS | ETMY OL laser replaced | This JDSU 1103P laser, sn P892324 lived
for 2 years. It's power output is 0.05
mW now |
|
|
14409
|
Sat Jan 19 15:33:18 2019 |
gautam | Update | SUS | ETMY OSEMs faulty | After diagnosis with the tester box, as
I suspected, the fully open DC voltages on
the two problematic channels, LL and UR, |
|
|
14411
|
Tue Jan 22 20:36:53 2019 |
gautam | Update | SUS | ETMY OSEMs faulty | Short update on latest Satellite box woes.
I checked the resistance
of all 5 OSEM coils on ETMY using a DB25 |
|
|
12430
|
Mon Aug 22 18:04:24 2016 |
gautam | Update | SUS | ETMY OSEMs inserted | [Johannes, gautam]
We worked on trying to insert the
OSEMs in the optimal positions such that |
|
|
8749
|
Tue Jun 25 23:49:04 2013 |
Annalisa | Update | SUS | ETMY Oplev | I had some problem with the Oplev Servo
today. I was working at the mode matching
fine tuning and I left the Oplev servo enabled |
|
|
12750
|
Tue Jan 24 17:52:15 2017 |
Craig | Update | Optical Levers | ETMY Oplev HeNe is replaced | Steve, Craig, Gautam
Today Steve replaced the ETMY He/Ne
sr P919645 OpLev laser with sr P947049 and |
6x |
|
13018
|
Tue May 30 13:36:58 2017 |
Steve | Update | Optical Levers | ETMY Oplev HeNe is replaced | Finally I reallized what is killing the
ETMY oplev laser. Wrong
power supply, it was driving the |
|
|
12747
|
Mon Jan 23 17:24:26 2017 |
Steve | Update | Optical Levers | ETMY Oplev HeNe is running hot | ETMY He/Ne 1103P body temp is
~45 C The laser was seated loosely
in the V-mount with black rubber padding. |
|
|
14402
|
Tue Jan 15 18:16:00 2019 |
gautam | Update | Optical Levers | ETMY Oplev HeNe needs replacement | Perhaps the ETMY Oplev HeNe is also giving
up - the power has fallen by ~30% over 1
year (Attachment #2), nearly twice as much |
|
|
12746
|
Mon Jan 23 15:16:52 2017 |
gautam | Update | Optical Levers | ETMY Oplev HeNe needs to be replaced | On the control room monitors, I noticed
that the IR TEM00 spot was moving around
rather a lot in the Y arm. The |
|
|
13267
|
Tue Aug 29 15:04:59 2017 |
gautam | Update | SUS | ETMY Oplev PIT loop gain changed | Last night, while we were working on the
ALS, I noticed the GTRY spot moving around
(in PITCH) on the CCD monitor in the control |
|
|
13060
|
Mon Jun 12 17:42:39 2017 |
gautam | Update | ASS | ETMY Oplev Pentek board pulled out | As part of my Oplev servo investigations,
I have pulled out the Pentek Generic Whitening
board (D020432) from the Y-end electronics |
|
|
499
|
Sun May 25 22:33:00 2008 |
rana | Update | SUS | ETMY Oplev Work | I found the ETMY table in disarray and put
the panels back on and put the ETMY OL laser
back on the quad.
|
|
|
11526
|
Mon Aug 24 16:10:07 2015 |
ericq | Update | SUS | ETMY Oplev laser power is falling | Today I noticed the box around the ETMY
oplev sum flashing red, as it dipped below
1k. I don't recall seeing this recently, |
|
|
11527
|
Mon Aug 24 16:46:49 2015 |
ericq | Update | SUS | ETMY Oplev laser power is falling | Repeated for all optics, ETMY seems like
the only one sharply dropping for now (PRM
is all over the place and hard to gauge, |
|
|
11566
|
Thu Sep 3 08:53:55 2015 |
Steve | Update | SUS | ETMY Oplev laser power is falling | Rana, Steve
We investigated the ETMY oplev |
|
|
13063
|
Wed Jun 14 18:15:06 2017 |
gautam | Update | ASS | ETMY Oplev restored | I
replaced the Pentek Generic Whitening Board
and the Optical Lever PD Interface Board |
|
|
13064
|
Thu Jun 15 01:56:50 2017 |
gautam | Update | ASS | ETMY Oplev restored | Summary:
I tried playing around with |
|
|
16233
|
Thu Jul 1 10:34:51 2021 |
Paco, Anchal | Summary | LSC | ETMY QPD fixed | Paco worked on alignign the beam splitter
to get light on the ETMY QPD and was successful
in centering it without any other changes |
|
|
16675
|
Tue Feb 22 18:47:51 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | [Ian, Koji]
In preparation for the replacement
of the suspension electronics that control |
|
|
16680
|
Fri Feb 25 14:00:08 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | [Koji, Ian]
We looked at a few power supplies
and we found one that was marked "CHECK |
|
|
16681
|
Fri Feb 25 14:48:53 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | I moved the network-enabled power strip
from above the power supplies on rack 1y4
to below. Nothing was powered through the |
|
|
16684
|
Sat Feb 26 23:48:14 2022 |
Koji | Update | SUS | ETMY SUS Electronics Replacement | [Ian, Koji] - Activity
on 25th (Fri)
We continued working on |
|
|
16690
|
Tue Mar 1 19:26:24 2022 |
Koji | Update | SUS | ETMY SUS Electronics Replacement | The replacement key switches and Ne Indicators
came in. They were replaced and work fine
now. |
|
|
16709
|
Mon Mar 7 16:44:15 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | Now that the ETMSUS is back up and running
I reran my measurements from the beginning
of the process. The results below show |
6x |
|
16723
|
Fri Mar 11 16:43:03 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement | I updated the gain of the ct2um filter
on the OSEMS for ETMY and decreased their
gain by a factor of 9 from 0.36 to 0.04. |
|
|
16743
|
Fri Mar 25 11:39:14 2022 |
Anchal | Update | SUS | ETMY SUS Electronics Replacement - Questions | After Ian updated the cts2um filters for
OSEM, shouldn't the damping gains be
increased back by factor of 10 to previos |
|
|
16746
|
Mon Mar 28 16:25:34 2022 |
Ian MacMillan | Update | SUS | ETMY SUS Electronics Replacement - Questions | The point of changing the gains was to
return the system to its origional state.
ie I wanted the over all gain of the physical |
|
|
5294
|
Wed Aug 24 09:11:19 2011 |
jamie | Update | SUS | ETMY SUS update: looks good. WE'RE READY TO CLOSE | We ran one more free swing test on ETMY
last night, after the last bit of tweaking
on the SIDE OSEM. It now looks pretty |
|
|
12451
|
Mon Aug 29 14:42:06 2016 |
gautam | Update | SUS | ETMY Satellite box diagnostics | I opened up the ETMY satellite box to investigate
the glitches seen in the UL sensor output.
Attachments #1 & 2: The |
|
|
4408
|
Sun Mar 13 04:00:53 2011 |
rana | Update | CDS | ETMY Sim work | I did some work on the ETMY |
|
|
4409
|
Sun Mar 13 16:46:48 2011 |
josephb | Update | CDS | ETMY Sim work | 4. The blue Output Filters section
has been changed to agree with the new filter
of matrices row, column labeling. My |
|
|
13101
|
Sat Jul 8 17:09:50 2017 |
gautam | Update | General | ETMY TRANS QPD anomaly | About 2 weeks ago, I noticed some odd behaviour
of the LSC TRY data stream. Its DC value
seems to be drifting ~10x more than TRX. |
|
|
13102
|
Sun Jul 9 08:58:07 2017 |
rana | Update | General | ETMY TRANS QPD anomaly | Indeed, the whole point of the high/low
gain setup is to never use
the QPDs for the single arm work. Only |
|
|
367
|
Mon Mar 10 20:46:41 2008 |
John | Configuration | LSC | ETMY Trans PD & QPD | I've placed a 10% reflector in the path from
ETMY to the trans and quadrant photodiodes. |
|
|
2287
|
Tue Nov 17 21:21:30 2009 |
rob | Update | SUS | ETMY UL OSEM | Had been disconnected for about two weeks.
I found a partially seated 4-pin LEMO cable
coming from the OSEM PD interface board. |
|
|
12486
|
Tue Sep 13 11:00:59 2016 |
Lydia | Update | SUS | ETMY UL glitch returned |
|
|
|
12350
|
Thu Jul 28 22:43:03 2016 |
rana | Update | General | ETMY UL magnet broke off | I'd recommend replacing the wire and
grinding down the clamp to prevent cutting
the wire. Since we have almost never replaced |
|
|
12445
|
Fri Aug 26 11:35:44 2016 |
gautam | Update | SUS | ETMY UL sensor problematic | I've been noticing that the ETMY UL
sensor output has been erratic over
the last few days. It seems to be jumping |
|