| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
10396
|
Thu Aug 14 22:58:59 2014 |
rana, jenne | Summary | Green Locking | ALS DIFF tuning | We've been having trouble tuning
the ALS DIFF matrix. Trying to see if the
MC2 EXC can be cancelled in ALS DARM by adjusting |
|
|
17374
|
Fri Dec 30 11:38:45 2022 |
Paco | Summary | Calibration | ALS Calibration errors -- single arm actuation | Here are my thoughts on calibration errors.
This applies to the single arm actuation
calibration, but may easily be extended to |
|
|
9872
|
Mon Apr 28 23:05:03 2014 |
Jenne | Update | LSC | ALS CARM and DARM settings | [Jenne, Koji]
The IFO is being uncooperative tonight,
and I have an early morning meeting, so I'm |
|
|
9702
|
Fri Mar 7 00:43:34 2014 |
manasa | Update | LSC | ALS C&D locked (on MC2 and ETMs) and IR resonance obtained | [EricQ, Manasa]
|
|
|
16333
|
Wed Sep 15 23:38:32 2021 |
Koji | Update | ALS | ALS ASX PZT HV was off -> restored | It was known that the Y end ALS PZTs are
not working. But Anchal reported in the meeting
that the X end PZTs are not working too. |
|
|
9123
|
Wed Sep 11 23:34:37 2013 |
Masayuki | Summary | Green Locking | ALS locking in both arms | [manasa, masayuki]
We locked the XARM and YARM with
using ALS control loop and |
|
|
9124
|
Wed Sep 11 23:43:10 2013 |
Koji | Summary | Green Locking | ALS locking in both arms | What was the beat freq for each arm?
The HF noise level depends on the
frequency of the beat note. |
|
|
9125
|
Thu Sep 12 00:07:26 2013 |
Masayuki | Summary | Green Locking | ALS locking in both arms |
|
|
|
16614
|
Mon Jan 24 12:33:41 2022 |
rana | Configuration | Wiki | AIC Wiki: txz files allowed | I updated the mime.local.conf file for
the AIC Wiki so as to allow attachments with
the .txz |
|
|
14227
|
Wed Oct 3 18:15:34 2018 |
yuki | Configuration | ASC | AI board improvement | [ Yuki, Gautam ]
I improved Anti-Imaging board (D000186-Rev.D),
which will be put between DAC port and |
|
|
14228
|
Thu Oct 4 00:44:50 2018 |
yuki | Configuration | ASC | AI board improvement | [ Yuki, Gautam ]
I made a cable which connects DAC
port (40 pins) and AI board (25 pins). I |
|
|
7173
|
Tue Aug 14 11:33:14 2012 |
Jamie Alex Den | Update | CDS | AI and AA filters | When signals are transmitted between the
models running at different rates, no AI
or AA filters are automatically applied. |
|
|
8857
|
Tue Jul 16 14:51:09 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-Modified notches | I tried shifting the notch frequencies
on the D000186-revision D board given to
me by Koji. The existing notches were at |
|
|
8875
|
Thu Jul 18 21:12:58 2013 |
gautam | Configuration | endtable upgrade | AI Board-D000186-All channels modified |
I carried some further modifications
and tests to the AI Board. Details and observations |
|
|
16218
|
Tue Jun 22 11:56:16 2021 |
Anchal, Paco | Update | SUS | ADC/Slow channels issues | We checked back in time to see how the
BS and PRM OSEM slow channels are zero. It
was clear that they became zero when we worked |
|
|
16219
|
Tue Jun 22 16:52:28 2021 |
Paco | Update | SUS | ADC/Slow channels issues | After sliding the alignment bias around
and browsing through elog while searching
for "stuck" we concluded the ITMX |
|
|
13661
|
Wed Feb 28 19:13:25 2018 |
gautam | Update | ALS | ADC test for differential receiving in c1lsc | [koji,
gautam]
we did a bunch of tests to figure |
|
|
14194
|
Thu Sep 6 14:21:26 2018 |
gautam | Update | CDS | ADC replacement in c1lsc expansion chassis | Todd E. came by this morning and gave us
(i) 1x new ADC card and (ii) 1x roll of 100m
(2017 vintage) PCIe fiber. This afternoon, |
|
|
14195
|
Fri Sep 7 12:35:14 2018 |
gautam | Update | CDS | ADC replacement in c1lsc expansion chassis | Looks like the ADC was not to blame, same
symptoms persist.
|
|
|
14196
|
Mon Sep 10 12:44:48 2018 |
Jon | Update | CDS | ADC replacement in c1lsc expansion chassis | Gautam and I restarted the models on c1lsc,
c1ioo, and c1sus. The LSC system is functioning
again. We found that only restarting c1lsc |
|
|
1918
|
Mon Aug 17 07:01:09 2009 |
Clara | Update | PEM | ADC noiseness | I shorted the inputs on three channels
and the outputs on three channels of the
Guralp box, and I did similar things with |
|
|
13419
|
Wed Nov 8 16:39:24 2017 |
Kira | Update | PEM | ADC noise measurement | Gautam and I measured the noise of the
ADC for channels 17, 18, and 19. We plan
to use those channels for measuring the noise |
|
|
13676
|
Fri Mar 9 12:59:53 2018 |
Kira | Update | PEM | ADC noise measurement | [Kira, Gautam]
I ceated a simple circuit that
takes in 15V and outputs precisely 5V by |
|
|
6821
|
Fri Jun 15 13:33:39 2012 |
yuta | Update | Green Locking | ADC noise contribution to ALS | ADC noise is not a limiting noise source
in a current ALS setup.
|
|
|
13794
|
Thu Apr 26 20:22:21 2018 |
Kevin | Update | PEM | ADC common mode rejection with new seismometer connections | Yesterday I wired the outputs from the
seismometers directly to the ADC input bypassing
the old AA board circuit as is described |
|
|
13849
|
Wed May 16 21:02:22 2018 |
Kevin | Update | PEM | ADC common mode rejection with new seismometer connections | As described in this
elog, the ADC for the seismometers now
has the signals wired directly to the ADC |
|
|
5787
|
Wed Nov 2 17:33:28 2011 |
Katrin | Update | Green Locking | ADC channels for slow control | connector J9B of hardware ADC --> ch1
in software ADC --> GCY_ERR
connector J14 of hardware ADC --> |
|
|
7228
|
Sun Aug 19 00:54:07 2012 |
Masha | Update | PEM | ADC channel switch, triangulation script | Since the classification finally works
(or seems to work..), I wrote triangulation
scripts in Python which triangulate the signals, |
|
|
16008
|
Thu Apr 8 20:58:17 2021 |
Koji | Update | CDS | ADC adapter boards assembly | 5x 16bit ADC adapter boards (D0902006)
assembled. |
|
|
6638
|
Thu May 10 21:13:01 2012 |
Den | Update | Electronics | ADC 3 | ADC 3 INPUT 4 (#3 in the c1pem model if
you count from 0) is bad. It adds DC = ~1
V to the signal as well as noise. I plugged |
|
|
1063
|
Tue Oct 21 16:17:45 2008 |
Yoichi | Update | PSL | AD797 Oscillation in the FSS board | I checked each op-amp's output in the FSS
board to see if any indication of slew-rate
saturation can be found.
|
|
|
6534
|
Fri Apr 13 16:09:43 2012 |
Suresh | Update | Computer Scripts / Programs | ACAD 2002 installed on C21530 | I have installed
ACAD 2002 on one of the Windows machines |
|
|
1120
|
Fri Nov 7 08:08:00 2008 |
steve | Update | PEM | AC turned off in IFO room | All [COLOR=red]tree[/COLOR] AC units in IFO
room 104 switched off at 7:45am
I'm looking for the periodic thump signal |
|
|
6273
|
Fri Feb 10 15:54:27 2012 |
steve | Update | PEM | AC turned back ON | The air cond was off for 2 hrs. I
just switched it back on at 15:51 |
|
|
7856
|
Wed Dec 19 11:53:23 2012 |
Steve | Update | VAC | AC removed | Koji, Manasa, Jenne, Jamie, Bob and
Steve
Access connector removed this morning |
|
|
8933
|
Mon Jul 29 16:04:40 2013 |
Steve | Update | VAC | AC removed | Manasa, Eric, Evan, Koji and Steve,
Access connector removed in order
to complete alignment. Light aluminum with |
|
|
8934
|
Mon Jul 29 16:15:13 2013 |
Koji | Update | VAC | AC removed | Prior to the access connector removal,
Manasa and I aligned the IFO mirrors.
The arms were locked and aligned by |
|
|
6432
|
Wed Mar 21 10:31:28 2012 |
steve | Update | SAFETY | AC power to ETMY turned off | ETMY sus damping was disabled. Green locking
laser and associated electronics turned off.
Computers and power supplies turned off at |
|
|
6433
|
Wed Mar 21 11:32:47 2012 |
steve | Update | SAFETY | AC power to ETMX turned off |
|
|
|
6864
|
Mon Jun 25 08:21:40 2012 |
steve | Update | General | AC power disturbance on Sat |
|
|
|
6434
|
Wed Mar 21 19:12:27 2012 |
steve | Update | Computers | AC power back on both ends |
|
|
|
2842
|
Mon Apr 26 11:13:28 2010 |
steve | Omnistructure | PEM | AC on/off is working |
|
|
|
1121
|
Fri Nov 7 10:52:57 2008 |
steve | Update | PEM | AC is back on | The 20 minutes and 6 sec thumps are not related
to the 40m ac units
This period is precisely right on so it is |
|
|
1122
|
Fri Nov 7 15:58:10 2008 |
rana | Update | PEM | AC is back on | I'll bet Steve a dollar that it is mechanical.
The attached PDF compares all of the accelerometers
from right now.
|
|
|
5988
|
Wed Nov 23 14:47:14 2011 |
Jenne | Configuration | Environment | AC in the IFO room was off | I turned it back on, maybe around 11am?
Definitely a little while before the 12:30
meeting. |
|
|
16054
|
Tue Apr 20 10:52:49 2021 |
Anchal, Paco | Update | SUS | AC gain coil output balancing for IMC | [Paco, Anchal]
We adopted the following
procedure to balance the coil output gains |
|
|
960
|
Wed Sep 17 19:13:47 2008 |
Alberto | Update | General | ABSL: status | I installed the setup for measuring TEM01/10
on the X end table.
I'm leaving. I shut the laser, flipped down |
|
|
979
|
Mon Sep 22 20:00:35 2008 |
Alberto | Update | General | ABSL: running measurement | I'm leaving the X arm locked on the TEm01
mode while a measurement is running. Just
please wait for 40 minute if you need the |
|
|
956
|
Wed Sep 17 13:58:36 2008 |
Alberto | Update | General | ABSL: results from the X arm | Today I repeated the measurement of the FSR
on the X arm cavity. The noise in the transmitted
power that made the measures fluctuate was |
|
|
946
|
Sun Sep 14 18:30:32 2008 |
Alberto | Update | General | ABSL: measured X arm | Today I measured the X arm FSR.
Hi moved the fast PD (Thor Labs PDA255) from
the Y end table to the X end table. I had |
|