| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
650
|
Tue Jul 8 21:58:22 2008 |
alberto | Update | General | Secondaty beam aligned to the IFO beam again | Yesterday the alignment of the secondary beam
to the IFO was completely lost and today
I had to realign all the optics before I |
|
|
3489
|
Mon Aug 30 18:35:22 2010 |
Jenne | Update | WienerFiltering | Secret Hiding Place for Raw Data | As it turns out, data seems to fall off
the 16Tb drives after ~20 days. Which
makes it a good thing that I saved all of |
|
|
7954
|
Tue Jan 29 14:34:42 2013 |
Jenne | Update | PEM | Secret Seis filters |
The BLRMS have been bad again, since
the computer crash of last week. Finally |
|
|
657
|
Thu Jul 10 23:27:57 2008 |
John | Metaphysics | Cameras | Secret handshakes | Rob and I have joined the ranks of the illuminati
and exercised our power.
|
|
|
10482
|
Wed Sep 10 02:35:54 2014 |
Jenne | HowTo | Treasure | Secret scripts, revealed! | I hereby confess to having a secret
script. But it is secret no longer!
It's a "goLock" script, |
|
|
5573
|
Thu Sep 29 00:16:35 2011 |
Den | Update | Computers | Segmentation fault fixed. | The OAF c-code crashed because of the segmentation
fault. We've created arrays of static variables
|
|
|
295
|
Sun Feb 3 05:02:41 2008 |
rana | Update | PEM | Seism 4 day | |
|
|
5663
|
Thu Oct 13 21:44:48 2011 |
Mirko | Update | CDS | Seismic BLRMS channels, new RMS calculation | [Rana, Koji, Mirko]
We looked into the CDS RMS block c-code |
|
|
5679
|
Mon Oct 17 14:26:22 2011 |
Mirko | Update | CDS | Seismic BLRMS channels, new RMS calculation |
|
|
|
11316
|
Tue May 19 19:24:30 2015 |
rana | Update | PEM | Seismic BLRMS filters | I was wondering about the design of the
BLRMS fitlers for the seismic channels since
the STS ones seem to have so little gain |
|
|
11582
|
Mon Sep 7 19:46:46 2015 |
rana | Update | PEM | Seismic BLRMS filters | As it turned out, the "STS" BLRMS
filters were all a mess, so I fixed them
up today: |
|
|
278
|
Sun Jan 27 21:44:48 2008 |
rana | Update | CDS | Seismic BLRMS on Matlab | I wrote a matlab script to produce band limited
RMS trends from our accelerometers. It mimics
the code written
|
|
|
11330
|
Thu May 28 15:10:44 2015 |
rana | Update | PEM | Seismic Confusion | You are plotting the STS channels,
not Guralp. These are for the Trillium
240 seismometer. |
|
|
12778
|
Tue Jan 31 18:51:07 2017 |
gautam | Update | SEI | Seismic Rainbow Strip - myths debunked | I've been suggesting that there may
be something wonky with the Seismic Rainbow
Striptool on the wall for the last couple |
|
|
7841
|
Mon Dec 17 19:47:15 2012 |
rana | Update | PEM | Seismic StripTool config updated | I have updated the Seismic Striptool display
which is plotted on the wall in the control
room. Please take a look and make comments. |
|
|
16783
|
Mon Apr 18 14:52:47 2022 |
Ian MacMillan | Summary | SEI | Seismic Study of Buildings and Caltech Campus | [Ian, JC]
I want to take measurements of
seismic noise at different places on Caltech's |
7x |
|
16798
|
Thu Apr 21 17:32:35 2022 |
Ian MacMillan | Summary | SEI | Seismic Study of Buildings and Caltech Campus | [Rana, Ian]
We built a power supply for the
accelerometer shown in Attachment 1 based |
|
|
12906
|
Fri Mar 24 19:04:18 2017 |
gautam | Update | IMC | Seismic feedforward and WFS | [valera, gautam]
On Wednesday at the meeting, we
were discussing why we aren't able to |
|
|
15282
|
Tue Mar 24 19:41:57 2020 |
gautam | Update | Wiener | Seismic feedforward for MCL | Summary:
I think the feedforward filters
used for stabilizing MCL with vertex seismometers |
|
|
5856
|
Wed Nov 9 20:35:58 2011 |
Mirko | Update | Adaptive Filtering | Seismic noise injection into the MC | Very elaborated measurement ;-)
On 11-11-08:
18:40 Stomp near STS1 for 2mins |
8x |
|
13146
|
Thu Jul 27 22:42:24 2017 |
gautam | Update | SUS | Seismic noise, DAC noise, and Coil Driver electronics noise | Summary:
|
|
|
5986
|
Wed Nov 23 02:34:28 2011 |
Mirko | Update | PEM | Seismic spectrum & Striptool | The Striptool for the BLRMS seismic channels
is running now. Channels are ( still ) recorded
as slow EPICS channels. |
|
|
2638
|
Wed Feb 24 16:11:15 2010 |
Jenne | Update | PEM | Seismic witnesses near MC1 tank moved | Since we're going to open the MC1 tank
tomorrow, I've moved the MC1 accelerometers
and the Guralp over to underneath MC2 for |
|
|
2661
|
Sun Mar 7 23:05:39 2010 |
rana | Update | PEM | Seismic witnesses near MC1 tank moved |
|
|
|
11268
|
Sun May 3 01:04:19 2015 |
rana | Summary | PEM | Seismo signals are bad | https://ldas-jobs.ligo.caltech.edu/~max.isi/summary/day/20150502/pem/seismic/
Looks like some of our seismometers
are oscillating, not mounted well, or something |
|
|
13777
|
Fri Apr 20 23:36:28 2018 |
Kevin | Update | PEM | Seismometer BLRMs | Steve secured the GPS time server in the
rack above the AA board and removed the wooden
block that it was resting on. The new rack |
|
|
13787
|
Tue Apr 24 21:19:08 2018 |
Kevin | Update | PEM | Seismometer BLRMs | In the ongoing attempt to recover the seismometer
BLRMS, I removed the AA board from the rack
and modified the BS seismometer Z channel. |
|
|
4774
|
Tue May 31 16:07:57 2011 |
Larisa Thorne | Configuration | Electronics | Seismometer Box Update | (Continuation of this)
I plugged the circuit into the LISO |
|
|
4785
|
Sat Jun 4 15:26:04 2011 |
Larisa Thorne | Update | Electronics | Seismometer Box Update | (continuation of this)
Here are the transfer function and |
|
|
4807
|
Fri Jun 10 20:23:56 2011 |
Larisa Thorne | Update | Electronics | Seismometer Box Update/graphs | (continuation of this)
The noise graphs relating total noise |
|
|
4810
|
Mon Jun 13 16:27:10 2011 |
Jenne | Update | Electronics | Seismometer Box Update/graphs |
|
|
|
4061
|
Wed Dec 15 18:29:59 2010 |
Jenne | Update | PEM | Seismometer Channels Being Recorded Again | The Seismometer channels are once more
being recorded. Alastair brought Gur1
back from the ATF the other day, and today |
|
|
826
|
Mon Aug 11 19:09:28 2008 |
Jenne | DAQ | PEM | Seismometer DAQ is being funny | While looking at the Ranger seismometer's
output to figure out what our max typical
ground motion is, Rana and I saw that the |
|
|
12160
|
Thu Jun 9 09:57:06 2016 |
Aakash | Update | General | Seismometer Enclosure Development |
Me and Gautam yesterday
opened the tilt-free seismometer enclosure
to see if we could use the thermocouples |
|
|
12224
|
Tue Jun 28 22:54:43 2016 |
Aakash | Update | General | Seismometer Enclosure Development | SURF 2016 | The existing enclosure for seismometer
at LIGO 40m lab is a cylindrical stainless
steel can placed upside down over the seismometer. |
|
|
12236
|
Fri Jul 1 01:52:54 2016 |
Aakash | Update | General | Seismometer Enclosure Development | SURF 2016 | I have transferred most of the temperature
measurement stuff from the front area to
seismometer at the end of Y-arm. While |
|
|
12253
|
Wed Jul 6 16:40:09 2016 |
Aakash | Update | General | Seismometer Enclosure Development | SURF 2016 | I am using AD592CNZ temperature
transducer ICs for measuring temperature
inside as well as outside the enclosure. |
|
|
12256
|
Wed Jul 6 20:51:00 2016 |
Koji | Update | General | Seismometer Enclosure Development | SURF 2016 | Circuit1: It is nice to
receive the voltage across the transimpedance
resistor with a high impedance buffer (or |
|
|
2237
|
Wed Nov 11 12:50:10 2009 |
Jenne | Update | PEM | Seismometer Noise Characteristics | The attached plot shows the spectra of
the 3 Z axes of the 3 seismometers we have
(this data is from ~20Aug2009, when the Ranger |
|
|
2833
|
Thu Apr 22 20:28:40 2010 |
Jenne | Update | PEM | Seismometer Noise Characteristics |
|
|
|
13850
|
Wed May 16 21:47:17 2018 |
Kevin | Update | PEM | Seismometer Noise Spectra | Earlier today Kira and I reconnected the
EX seismometer. I just took some spectra
of all three seismometers, shown in the attachments, |
|
|
3354
|
Tue Aug 3 11:50:16 2010 |
Jenne | Update | PEM | Seismometer Problem Tracked down | After some cable swapping this morning,
I have determined which cable is bad.
It's the Gur1 cable between the seismometer |
|
|
5200
|
Thu Aug 11 19:14:22 2011 |
Ishwita , Manuel | Update | PEM | Seismometer STS2(Bacardi, Serial NR 100151) moved near ETMX | We moved the STS2(Bacardi, Serial NR 100151)
to his new location and laid his cable from rack |
|
|
3351
|
Tue Aug 3 01:51:01 2010 |
Jenne | Update | PEM | Seismometer Update: Still not good, but perhaps getting better |
|
|
|
3349
|
Mon Aug 2 18:02:46 2010 |
Jenne | Update | PEM | Seismometer Update: Still not good, but perhpas getting better | Today's seismometer diagnosis activities
are still underway, this is just an update
(since I did some reboots): |
|
|
10948
|
Wed Jan 28 08:53:01 2015 |
Steve | Update | PEM | Seismometer Vertex is covered |
|
|
|
10976
|
Wed Feb 4 19:21:45 2015 |
Jenne | Update | PEM | Seismometer Vertex is covered | I opened up the spaghetti pot over the
vertex seismometer, and taped the cable to
the slab. The way the cable is coiled, |
|
|
10368
|
Tue Aug 12 13:31:58 2014 |
Jenne | Update | PEM | Seismometer cables in place, ready for sensors | [TaraV, Jenne]
The short cable from the slab to
the sensor has been assembled and installed |
|
|
13575
|
Wed Jan 24 13:55:04 2018 |
Kira | Summary | PEM | Seismometer can insulation test | Gautam and I set up the insulated seismometer
can in the lab today. I had previously wired
up the two heaters I placed onto the sides |
6x |
|
13582
|
Thu Jan 25 12:41:18 2018 |
Kira | Update | PEM | Seismometer can insulation test | We started the actual heating test today
and it seems to be working so far. Hoping
to heat it to about 40C. We also set |
|