| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
4449
|
Mon Mar 28 17:06:15 2011 |
kiwamu | Update | Green Locking | a mixer school | In
the last week Matt and I modified the MFD |
|
|
4450
|
Mon Mar 28 18:13:32 2011 |
rana | Update | Green Locking | a mixer school | Using 2 dBm for a Level 7 mixer is so bogus,
that I will dismantle this as soon as I come
over. |
|
|
4451
|
Mon Mar 28 18:22:43 2011 |
kiwamu | Update | Green Locking | a mixer school | PLEASE DO
NOT DISMANTLE THE SETUP ! |
|
|
4923
|
Thu Jun 30 14:11:55 2011 |
kiwamu | Update | ABSL | a photo of ABSL setup on the AP table | Here
is a picture of the latest ABSL setup at
the east part of the AP table. |
|
|
4850
|
Tue Jun 21 20:35:50 2011 |
kiwamu | Update | LSC | a script to measure sensing matrix | Last
night I was making a script which will measure
the sensing matrix using the realtime LOCKIN |
|
|
4778
|
Wed Jun 1 21:56:43 2011 |
Koji | Update | General | aLIGO BBPD / Green PD final result | Here is the conclusive result for the
circuit configuration for aLIGO BBPD and
40m Green PD. |
|
|
4649
|
Fri May 6 01:27:12 2011 |
Koji | Summary | General | aLIGO BBPD / Green PD investigation | Minicircuits
ERA-5SM was used for the RF
amp of the BBPD. This amp is promising |
|
|
4658
|
Sat May 7 12:57:54 2011 |
Koji | Summary | General | aLIGO BBPD / Green PD investigation | The RF amplifier of the prototype BBPD
has been replaced from ERA-5SM to MAR-6SM. |
|
|
4676
|
Tue May 10 09:05:49 2011 |
Koji | Update | General | aLIGO BBPD / Green PD investigation | BBPD update
- The BBPD circuit has been constructed
on the aLIGO BBPD board |
|
|
13650
|
Thu Feb 22 16:11:14 2018 |
Koji | Update | General | aLIGO EOM crystal replacement | aLIGO
EOM crystal replacement
The entire operation has |
|
|
13720
|
Fri Mar 30 03:23:50 2018 |
Koji | Update | General | aLIGO EOM work | I have been working on the aux beat setup
on the PSL table between 9PM-3AM.
This work involved: |
|
|
9089
|
Fri Aug 30 01:01:28 2013 |
rana, nic | Summary | Computer Scripts / Programs | aLIGO Noise Budget code installed and running | Chris Wipf has been developing a new Noise
Budget code that allows us to use our existing
Simulink models to handle all of the noise |
|
|
15818
|
Thu Feb 18 18:05:04 2021 |
gautam | Update | SUS | aLIGO Sat Amp characterization | Before installation, I performed a bunch
of tests on the aLIGO sat amp. All the measurements
were made with the dummy suspension box substituting |
|
|
15819
|
Thu Feb 18 20:20:25 2021 |
Koji | Update | SUS | aLIGO Sat Amp characterization | Yeah, it's really inconsistent. You
had 35mA LED drive and the current noise
of the noisy channel was 5e-7 A/rtHz at 1Hz. |
|
|
15809
|
Tue Feb 16 14:56:44 2021 |
gautam | Update | SUS | aLIGO Sat Amp installed, powered | [jordan,
gautam]
Ran 60ft long cables from |
|
|
15814
|
Wed Feb 17 16:11:53 2021 |
gautam | Update | SUS | aLIGO Sat Amp installed, powered | There is some non-trivial sign flipping
in the sensors/coils in this new setup because
it is a hybrid one with the old interfacing |
|
|
15817
|
Thu Feb 18 15:33:21 2021 |
gautam | Update | SUS | aLIGO Sat Amp installed, powered and commissioned | The WFS servo was recommissioned. The matrix
can be tuned a bit more, but for now, I've
recovered the old performance and the alignment |
|
|
11438
|
Thu Jul 23 03:09:05 2015 |
ericq | Update | LSC | aLIGO demod board lives! | I'm a little mystified. Peeking inside
the aLIGO demod board, I saw that the reason
that two of the channels weren't working |
|
|
11468
|
Thu Jul 30 14:42:03 2015 |
ericq | Update | LSC | aLIGO demod board lives! | ALS is not currently
limited by the demod board or whitening electronics. |
|
|
15613
|
Mon Oct 5 14:01:41 2020 |
gautam | Update | Electronics | aLIGO demod boards stuffed and delivered | We received 20pcs of stuffed
demodulator
boards from Screaming Circuits today. |
|
|
7189
|
Wed Aug 15 10:40:16 2012 |
Den | Update | CDS | aa filters | The lack of AA filter for MCL signal is
RFM model strongly disturbed entering to
OAF signal |
|
|
9786
|
Mon Apr 7 15:26:32 2014 |
jamie, ericq | Update | CDS | aborted attempt to update c1sus machine with second CPU | This morning we attempted to replace the
c1sus front end machine with a spare that
had been given a second CPU, and therefore |
|
|
5670
|
Sat Oct 15 16:01:26 2011 |
kiwamu | Update | IOO | about LOCKIN module |
|
|
|
943
|
Thu Sep 11 23:28:35 2008 |
alberto | Update | General | abs cavity length experiment | The MC lost lock for some reason not related
to either the FSS or the PMC I'm done with
my measurement for tonight. I've shut the |
|
|
944
|
Fri Sep 12 11:09:20 2008 |
Alberto | Update | General | abs cavity length experiment | I'm leaving the lab for a couple of hours.
I shut the NPRO. The interferometer is available
to anyone. |
|
|
945
|
Sat Sep 13 23:13:01 2008 |
Alberto | Update | General | abs cavity length experiment | The Y arm was locked all time today but, suddenly,
this afternoon it lost lock and since then
I've been unable to restore it. I tried unsuccessfully |
|
|
656
|
Thu Jul 10 19:12:07 2008 |
Alberto | Update | General | abs cavity length measurement experiment | Yesterday morning, when I started, I found
the IFO beam on a different position and
the beam spot at the AS port looked very |
|
|
668
|
Mon Jul 14 19:15:43 2008 |
Alberto | Update | General | abs cavity length measurement experiment | Lately I've been dealing with the alignment
of the interferometer to have a good beam
spot at the AS port. Today the alignment |
|
|
669
|
Mon Jul 14 21:34:10 2008 |
Alberto | Update | General | abs cavity length measurement experiment | [quote]Lately I've been dealing with the alignment
of the interferometer to have a good beam
spot at the AS port. Today the alignment |
|
|
940
|
Wed Sep 10 19:53:53 2008 |
Alberto | Update | General | abs length experiment | Update of the last days work on the experiment
to measure the absolute length of the cavities.
|
|
|
3551
|
Thu Sep 9 11:31:54 2010 |
steve | Update | PEM | accelerometer cable connection | I turned off/on the power to the accelerometers
in order to re rout their connections. I
found cable connector body-nut #3 loose |
|
|
1696
|
Wed Jun 24 12:04:00 2009 |
Clara | Update | PEM | accelerometer clarification | When I said "MC1/MC2 accelerometers,"
I meant the entire three-axis accelerometer
set at each point. |
|
|
7562
|
Tue Oct 16 21:57:47 2012 |
Den | Update | PEM | accelerometers | All accelerometers are now at the table
behind 1X4, cables are near readout box. |
|
|
2119
|
Mon Oct 19 17:12:54 2009 |
jenne | Update | PEM | accelerometers and seismomters are all good. |
|
|
|
11950
|
Tue Jan 26 15:07:47 2016 |
Steve | Update | PEM | accelerometers moved to ETMX | Objective: measure the noise floor
on the optical table and the floor so we
can decide if the table needs better anchoring |
|
|
1613
|
Wed May 20 10:43:17 2009 |
steve | Omnistructure | Environment | accelerometers sensitivity |
|
|
|
747
|
Mon Jul 28 12:02:32 2008 |
Sharon | Update | | accelerometers settings | Jenne, Sharon
|
|
|
7407
|
Wed Sep 19 09:24:01 2012 |
Steve | Omnistructure | IOO | access connector at athmoshere |
|
|
|
7518
|
Wed Oct 10 10:55:56 2012 |
Steve | Omnistructure | IOO | access connector at athmoshere |
|
|
|
10473
|
Mon Sep 8 16:23:25 2014 |
Larry | HowTo | Computer Scripts / Programs | accessing 40m data remotely with python |
Attached is an example script showing
how to access 40m data remotely. The only |
|
|
13186
|
Thu Aug 10 15:45:34 2017 |
Steve | Update | VAC | accidental vent to 17 Torr | Finally we got the cold cathode gauge working.
IFO pressure 7e-6 Torr-it, vacuum normal
valve configuration with all 4 ion pump gate |
|
|
7650
|
Wed Oct 31 22:56:41 2012 |
Den | Update | PEM | acoustic noise | Microphone preamp box had a low-pass filter
at 2kHz, Ayaka changed it to 20 kHz by replacing
100pF capacitor with a 10pF. |
6x |
|
6565
|
Wed Apr 25 00:20:01 2012 |
Den | Update | PEM | acoustic noise at 40m | Blue
Bird Mic is suspended close to PMC now and
outputs ~10 counts when pre-amp gain is 8 |
|
|
6671
|
Thu May 24 02:55:36 2012 |
Den | Update | PEM | acoustic noise in MCL | Mic in the PSL showed that fluctuations
in the MCL in the frequency range 10 - 100
Hz are due to acoustic noise. I've measured |
|
|
445
|
Thu Apr 24 23:27:48 2008 |
rana | Update | PEM | acoustic noise in MC_F | I looked at the [COLOR=darkblue][FONT=Comic
Sans MS][SIZE=3]coherence between the Microphone
in the PSL (PEM-AS_MIC) and the MC_F[/SIZE][/FONT][/COLOR] |
|
|
7659
|
Thu Nov 1 20:20:33 2012 |
Den, Ayaka | Update | WienerFiltering | acoustic noise in PMC | We've subtracted acoustic noise from PMC
using 1 EM 172 microphone. We applied a 10
Hz high-pass filter to PMC length signal |
|
|
13530
|
Thu Jan 11 09:57:17 2018 |
Steve | Update | DAQ | acromag at ETMX | Good going Johannes!
|
|
|
12604
|
Mon Nov 7 19:49:44 2016 |
Johannes | Update | CDS | acromag chassis hooked up to PSL | [Lydia, Johannes]
We're waiting on the last couple
electrical components to arrive that are |
|
|
12607
|
Tue Nov 8 17:51:09 2016 |
Lydia | Update | CDS | acromag chassis hooked up to PSL | We set up the chassis in 1X7 today. Steve
is ordering a longer 25 pin cable to reach.
Until then the PSL diagnostic channels will |
|
|
12632
|
Mon Nov 21 19:54:13 2016 |
Johannes | Update | CDS | acromag chassis hooked up to PSL | [Lydia, Johannes]
We connected and powered up the
Acromag chassis today. It lives in 1X4 and |
|