| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
2067
|
Thu Oct 8 11:10:50 2009 |
josephb, jenne | Update | Computers | EPICs Computer troubles | At around 9:45 the RFM/FB network alarm
went off, and I found c1asc, c1lsc, and c1iovme
not responding. |
|
|
12005
|
Tue Feb 23 17:46:09 2016 |
gautam | Update | SUS | EQ | Looks like another EQ 4.8 took out all
the watchdogs, I've restored them, everything
looks alright and doesn't look like any |
|
|
11935
|
Tue Jan 19 10:25:53 2016 |
Steve | Update | SUS | EQ 3.6M Ludlow | Just an other local earthquake 3.6 Mag
Ludlow, Ca
No obvious sign of damage |
|
|
14323
|
Thu Nov 29 08:13:33 2018 |
Steve | Update | PEM | EQ 3.9m So CA | EQ did not trip anything. atm1
Just
a REMINDER:
our vacuum system is at atm to help the vacuum |
|
|
12001
|
Mon Feb 22 08:45:46 2016 |
Steve | Update | SUS | EQ 4.3 grabs ITMX-UL magnet | Local
EQ4.3
kicks ITMX-UL magnet into stuck |
|
|
16342
|
Fri Sep 17 20:22:55 2021 |
Koji | Update | SUS | EQ M4.3 Long beach | EQ M4.3 @longbeach
2021-09-18 02:58:34 (UTC) / 07:58:34
(PDT) |
|
|
7282
|
Mon Aug 27 09:24:17 2012 |
Steve | Update | SUS | EQ damage | It looks like we may lost 1 (or
3 ) magnets? Do not panic, it's not
for sure |
|
|
7283
|
Mon Aug 27 10:49:03 2012 |
Koji | Update | SUS | EQ damage | After shaking ITMX by the alignment bias
in yaw, it came back.
As ETMX seems to be largely misaligned |
|
|
7286
|
Mon Aug 27 15:49:46 2012 |
Jenne | Update | SUS | EQ damage |
|
|
|
17003
|
Thu Jul 14 19:09:51 2022 |
rana | Update | General | EQ recovery | There was a EQ in Ridgecrest (approximately
200 km north of Caltech). It was around 6:20
PM local time. |
|
|
15428
|
Wed Jun 24 22:33:44 2020 |
gautam | Update | SUS | EQ tripped all suspensions | This
earthquake tripped all suspensions and
ITMX got stuck. The watchdogs were restored |
|
|
15261
|
Sat Mar 7 15:18:30 2020 |
gautam | Update | SUS | EQ tripped some suspensions | An earthquake around 330 UTC (=730pm yesterday
eve) tripped ITMX, ITMY and ETMX watchdogs.
ITMX got stuck. I released the stuck optic |
|
|
12687
|
Thu Dec 29 10:24:56 2016 |
Steve | Update | PEM | EQ5.7mHawthorn NV | Sus damping restored.
|
|
|
12673
|
Thu Dec 8 07:56:05 2016 |
Steve | Update | PEM | EQ6.5m Northen CA | No damage. ITMY is glitching, so it has
not been damped.
|
|
|
13011
|
Wed May 24 18:19:15 2017 |
Kaustubh | Update | General | ET-3010 PD Test | Summary:
In continuation to the previous
test conducted on the ET-3040 PD, I |
|
|
2424
|
Wed Dec 16 20:29:08 2009 |
rana | Update | COC | ETM Coating study | This plot shows the Transmission for 532
and 1064 nm as a function of the thickness
of the SiO2 layer. |
|
|
2157
|
Wed Oct 28 17:20:21 2009 |
rana | Summary | COC | ETM HR reflectivity plot | This is a plot of the R and T of the existing
ETM's HR coating. I have only used 1/4 wave
layers (in addition to the standard 1/2 wave |
|
|
10397
|
Thu Aug 14 23:19:49 2014 |
rana | Summary | LSC | ETM Violin fundamental filters moved to LSC | We used to do violin mode and test
mass body mode notches in the SUS-LSC filter
modules. Now we want them balanced in the |
|
|
9469
|
Fri Dec 13 19:33:56 2013 |
Den | Update | ASC | ETM X,Y QPDs | I have modified/compiled/installed/restarted
c1scx and c1scy models to include arm transmission
QPDs in angular controls. |
|
|
14103
|
Wed Jul 25 14:45:59 2018 |
Sandrine | Summary | Thermal Compensation | ETM Y Table AUX read out | Attached is a photo of the set up of the
ETM Y table showing the AUX read out set
up. |
|
|
3902
|
Fri Nov 12 00:13:34 2010 |
Suresh | Update | SUS | ETM assembly started | [Jenne,
Suresh]
Selection |
|
|
4929
|
Fri Jul 1 16:01:48 2011 |
Jamie | Update | SUS | ETM binary whitening switching fixed | I have fixed the binary whitening switching
for the ETMs (ETMX and ETMY). See below
for a description of what some of the issues |
|
|
15488
|
Wed Jul 15 21:08:43 2020 |
gautam | Update | Electronics | ETM coil outputs DQed | To facilitate this investigation, I've
DQed the 4 face coil outputs for the two
ETMs. EX is currently running with 5 times |
|
|
4041
|
Fri Dec 10 11:04:03 2010 |
Osamu | Update | SUS | ETM oplev mufunctioning | |
|
|
9290
|
Fri Oct 25 04:54:21 2013 |
Masayuki | Update | SUS | ETM violin mode | Summary
When PRMI + 2arms are locked yesterday,
we heard the noise from suspension violin |
|
|
3991
|
Mon Nov 29 22:50:07 2010 |
Suresh | Update | SUS | ETMU05 Side Magnets glued back | [Suresh, Jenne]
ETMU05
: Gluing Side magnets back on to the optic. |
|
|
4022
|
Tue Dec 7 18:37:15 2010 |
Suresh | Update | SUS | ETMU05 ready for baking | The ETMU05 has been removed
from the suspension and put into
the little foil house. |
|
|
4018
|
Mon Dec 6 23:33:15 2010 |
Jenne | Update | SUS | ETMU05 winched, balanced, glued!!!!!! | [Suresh, Jenne]
|
|
|
3956
|
Fri Nov 19 16:13:09 2010 |
Jenne | Update | SUS | ETMU05: magnets glued to optic | [Jenne, Suresh]
Suresh
and I glued the intact-from-the-first-round |
|
|
3984
|
Wed Nov 24 17:57:24 2010 |
Jenne | Update | SUS | ETMU07: Baking. ETMU05: Needs side magnets reglued | [Jenne, Koji]
We removed ETMU07 from the suspension
tower, after confirming that the balance |
|
|
3979
|
Tue Nov 23 18:08:28 2010 |
Jenne | Update | SUS | ETMU07: Balanced, standoff glued. ETMU05: Magnets glued to optic | [Koji, Jenne]
ETMU07 had its wire winched to the
correct height, was balanced, standoff glued. |
|
|
3966
|
Mon Nov 22 18:39:53 2010 |
Jenne | Update | SUS | ETMU07: magnets glued to optic. ETMU05: magnets removed | [Suresh, Jenne]
A |
|
|
7317
|
Thu Aug 30 12:01:27 2012 |
janosch, Manasa,Steve | Update | | ETMX | We have done some work at ETMX today. We
installed the baffle and placed two
mirrors on the table. |
|
|
7318
|
Thu Aug 30 13:10:41 2012 |
jamie | Update | Cameras | ETMX |
|
|
|
7319
|
Thu Aug 30 17:03:32 2012 |
janosch, Manasa, Steve | Update | | ETMX | The baffle has been moved away from ETMX
towards the edge of the table (in fact, it
is a little beyond the edge). It is also |
|
|
7412
|
Wed Sep 19 17:48:47 2012 |
Den | Update | Modern Control | ETMX | Time domain control using LQR technique
is now applied to ETMX sus position. The
plan was to do it for oplevs, I'll do it |
|
|
11092
|
Tue Mar 3 09:42:40 2015 |
Steve | Update | SUS | ETMX is drifting | The temperature of the east and south ends
are normal, they are about the same.
|
|
|
12171
|
Mon Jun 13 10:01:58 2016 |
Steve | Update | SUS | ETMX jumps |
|
|
|
2632
|
Tue Feb 23 14:56:24 2010 |
steve | Update | General | ETMX optical table mass | Our janitor dropped one 48" long
fluorescent tube on the top cover of ETMX-isct.
This accident made glasses fly all over the |
|
|
10645
|
Tue Oct 28 11:45:21 2014 |
manasa | Update | SUS | ETMX - observation | I looked at what are the situations that
make ETMX lose alignment.
This is not occur all that often |
|
|
13617
|
Wed Feb 7 16:09:06 2018 |
Steve | Update | SUS | ETMX -15V dc corrected | The ETMX Sorrenson power supply -15V
was running at -13.9V |
|
|
6729
|
Thu May 31 11:02:14 2012 |
steve | Update | Locking | ETMX 1064 trans camera |
|
|
|
6838
|
Wed Jun 20 16:37:11 2012 |
yuta | Update | Locking | ETMX 1064 trans camera | [Jenne, Yuta]
We made ETMXT camera working. |
|
|
6847
|
Thu Jun 21 12:56:49 2012 |
yuta | Update | Locking | ETMX 1064 trans camera |
|
|
|
10757
|
Fri Dec 5 00:52:51 2014 |
Jenne | Update | SUS | ETMX 2nd order violin | We looked at the spectra of POX and POY
during IR lock, and Q saw a peak at 1285
in POX only. We're actuating on the |
|
|
12051
|
Mon Mar 28 10:43:18 2016 |
Steve | Update | endtable upgrade | ETMX 4'x2' optical table pictures |
|
|
|
13523
|
Wed Jan 10 12:42:27 2018 |
gautam | Update | SUS | ETMX DC alignment | I've been observing this for a few
days: ETMX's DC alignment seems to drift
by so much that the previously |
|
|
13527
|
Wed Jan 10 18:53:31 2018 |
gautam | Update | SUS | ETMX DC alignment | I should've put in the SUSPIT and SUSYAW
channels in the previous screenshot. I re-aligned
ETMX till I could see IR flashes in the arm, |
|
|
13528
|
Wed Jan 10 22:19:44 2018 |
rana | Update | SUS | ETMX DC alignment | Best to just calibrate the ETM OL in the
usual way. I bet the OSEM outputs have a
cal uncertainty of ~50% since the input matrix |
|
|
676
|
Tue Jul 15 19:15:57 2008 |
rana | Summary | SUS | ETMX Dewhitening characterization | Since the boys found that the ETM dewhitening
transient was kicking the IFO out of lock
we
|
|