 Tue Jan 29 14:56:39 2008, rob, Update, DMF, seisBLRMS 1.0
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The [COLOR=red]seisBLRMS[/COLOR] 1.0 program crashed at ~7:20 pm last night, so we didn't get data from overnight. It crashed when framecaching failed.
I added
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 Tue Feb 12 16:34:07 2008, rob, DAQ, DMF, seisBLRMS 1.1
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The compiled version of seisBLRMS had been running ~2 weeks without crashing as of last night, when I killed it
so it wouldn't interfere with alignment scripts. I added an EPICS channel C1:DMF-ENABLE, and updated the DMF
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Thu Feb 14 15:05:18 2008, rob, DAQ, DMF, seisBLRMS 1.1
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>
> Also, for reasons of aesthetics, I changed the data delay from 6 minutes to 5 minutes. We'll see if that's enough.
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Thu May 7 23:34:59 2009, rob, Update, SEI, seisBLRMS already lost
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Can't find hostname 'fb40m'
it only lasted a few hours |
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Fri Mar 13 19:26:09 2009, Yoichi, Update, DMF, seisBLRMS compiled
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I compiled seisBLRMS.
The tricks were the following:
(1) Don't add path in a deployed command. |
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Sun Mar 22 22:47:58 2009, rana, Update, DMF, seisBLRMS compiled but still dying
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Looks like seisBLRMS was restarted ~1 AM Friday morning but only lasted for 5 hours. I just restarted it on megatron;
let's see how it does. I'm not optimistic. |
Sun May 17 23:22:19 2009, rana, Update, Environment, seisBLRMS for the past 3 weeks 
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Looks like Chris Wipf's fix of using fclose worked for the NDS client.
The attached plot shows the minute trend RMS - we should put the calibration for these into the .m file
so that the EPICS values are in something useful like microns or microns/sec.
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Fri Jun 26 19:14:04 2009, rana, Update, Environment, seisBLRMS for the past 3 weeks
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[COLOR=chocolate][SIZE=2]Restarted the seisBLRMS.m on mafalda (running a term on op540m). Don't know why it stopped - the
terminal had a 'disabled by EPICS' message even though the EPICS enable button was enabled.[/SIZE][/COLOR]
[SIZE=1][FONT=Comic Sans MS][COLOR=darkgreen]I also changed the delay from 4 to 2 minutes. So now it is calculating a 64 s PSD starting from 2 minutes |
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Mon Mar 9 19:33:10 2009, rana, Update, DMF, seisBLRMS in temp condition
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The seisBLRMS has been running on megatron via an open terminal ssh'd into there from allegra with matlab running. This
is because I couldn't get the compiled matlab functionality to work.
Even so, this running script has been dying lately because of some bogus 'NDS' error. So for today I |
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Fri Mar 21 23:17:47 2008, rana, Configuration, DMF, seisBLRMS restarted
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I updated the seisBLRMS par file with the new channel names of the accelerometers and the seismometer and then
recompiled the code and restarted it according to Rob's elog entry. It went fine and the [SIZE=4][COLOR=chocolate][FONT=Comic Sans MS]seisBLRMS is now
back in
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Sat Aug 7 21:57:56 2010, rana, Summary, DMF, seisBLRMS restarted
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The green xterm on op540m which is running the seisBLRMS DMF got stuck somehow ~3 days ago and lost its NDS connection. I closed the matlab session and
restarted it. Seismic trends are now back online. |
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Mon Sep 13 02:45:59 2010, rana, Configuration, DMF, seisBLRMS restarts
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I restarted the seisBLRMS DMF monitor by ssh'ing into mafalda and starting up a matlab session. I also have started a StripTool session on rossa by forwarding
the process from op440m.
We need to get the modern EPICS installation onto these linux machines by copying what K. Thorne has done at LLO. |
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Fri Feb 1 12:37:39 2008, rob, Update, DMF, seisBLRMS trends
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Here are DV trends of the output of seisBLRMS over the last ~36 hours (which is how long it's been running), and another of the last 2 hours (which show
the construction crew taking what appears to be a lunch break). |
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Fri Apr 6 16:22:15 2012, Den, Update, Environment, seism box
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I've changed R2 resistor in the seism box for the VERT 1 channel from 464 Ohm to 1051 Ohm to reduce the gain of this channel by a factor of 2. This should
help the GUR1Z signal not to be corrupted inside the AA box, so we can use it in the adaptive filtering. |
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Fri Apr 27 13:32:06 2012, Den, Update, PEM, seism channels
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A few weeks ago I found that GUR2_X signal is biased from 0 to 800 counts in average. I decided that the corresponding channel in the readout box is
bad - adds DC voltage to the signal. I stopped using GUR2_XYZ channels of the seism readout box. Now the same thing happened with the GUR1_XYZ channels.
I checked the signals coming out from the seism box with the oscilloscope and they were fine. So the problem is not in the readout box. Then I applied |
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Fri Feb 10 15:52:35 2012, Jenne, Update, PEM, seismic BLRMS loud too
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Quote:
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Fri Feb 10 23:58:30 2012, rana, Update, PEM, seismic BLRMS loud too
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Quote:
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Mon Feb 13 11:30:51 2012, Jenne, Update, PEM, seismic BLRMS loud too
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Quote:
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Mon Feb 13 12:02:17 2012, Koji, Update, PEM, seismic BLRMS loud too
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I reported the procedure to add slow channels to the FB. I guess you already have done Step.1
http://nodus.ligo.caltech.edu:8080/40m/5991
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Thu May 15 15:10:02 2014, Steve, Update, PEM, seismic activities
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Our only seismometer is at the east end now.
Atm1, Ditch Day morning puzzle. The gardener came after the freshman did leave and cut the grass with the lawn mower.
Atm2, Yesterday afternoon the Aztecs containers moved out. |
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Tue Sep 27 08:49:47 2016, Steve, Update, SUS, seismic activity is up
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The earth quake shook ITMX free for a short while.
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Tue Nov 1 09:03:08 2016, Steve, Update, SUS, seismic activity is up
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Salton See is shaking again.
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Mon May 7 01:07:58 2012, Den, Update, IOO, seismic in mcf
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I tried to figure out where additional (to seismic) noise enters to MC_F, so the coherence below 1 Hz is low (~0.2-0.5). I've examined noise in the path
PD -> DEMOD -> MC BOARD -> FSS -> PZT Controller -> LASER
I terminated ADC and measured its noise
connected MC BOARD OUT to ADC, terminated INPUT1 of the MC BOARD and measured |
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Sun May 6 01:41:55 2012, Den, Update, PEM, seismic in x,y arms
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I locked x,y arms and measured coherence between POS{X,Y}11_I_ERR, MC_F and seismometer signals.
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Fri Feb 10 11:46:44 2012, steve, Update, IOO, seismic noise back to normal
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The shaking has stopped at 9:32am The AC was turned back on at 11:30am We still do not have any explanation
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Fri Feb 10 15:47:38 2012, rana, Update, PEM, seismic noise back to normal
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Kiwamu and Steve maybe don't know about how to trend seismic noise. If you just take the mean of the time series, you don't prove that the
seismic noise got any higher. The STS has a nominally zero DC output, so the long period level shifts that you see tell you just that there was a DC offset. |
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Wed Nov 16 23:50:40 2011, Den, Update, Adaptive Filtering, seismic noise injection
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[Micro, Den]
Analyzing coherence of seismic noise and mode cleaner length we've figured out that at some days the coherence below 1 Hz is still present. For
example, at Nov 13 we can see some coherence compared to most other dates when we are not able to see coherence as shown on the figure. On the top plot |
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Mon Nov 28 18:53:35 2011, Den, Summary, WienerFiltering, seismic noise substraction 9x
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There is still a problem why GUR, STS signals are poorly coherent to MC_L. But at least we can see coherence at 2-5 Hz. It might be useful to do
something with adaptive filtering because it does not work at all for a long time. We start with Wiener filtering. I still doubt that static filtering
is useful. Adaptive filter output is linear to its coefficients, so why not to provide adaptive filter with a zero approximation equal to calculated Wiener |
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Tue Nov 14 16:02:43 2017, Kira, Summary, PEM, seismometer can testing
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I made a model for our seismometer can using actual data so that we know approximately what the time constant should be when we test it out. I used the
appendix in Megan Kelley's report to
make a relation for the temperature in terms of time. |
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Tue Nov 21 16:00:05 2017, Kira, Update, PEM, seismometer can testing
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I performed a test with the can last week with one layer of insulation to see how well it worked. First, I soldered two heaters together in series so
that the total resistance was 48.6 ohms. I placed the heaters on the sides of the can and secured them. Then I wrapped the sides and top of the can
in insulation and sealed the edges with tape, only leavng the handles open. I didn't insulate the bottom. I connected the two ends of the heater directly |
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Wed Nov 22 12:13:15 2017, Kira, Update, PEM, seismometer can testing
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Updated some values, most importantly, the k-factor. I had assumed that it was in the correct units already, but when converting it to 0.046 W/(m^2*K)
from 0.26 BTU/(h*ft^2*F), I got the following plot. The time constant is still a bit larger than what we'd expect, but it's much better with these
adjustments. |
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Wed Nov 22 14:47:03 2017, Kira, Update, PEM, seismometer can testing
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For the insulation, I have decided to use this one (Buna-N/PVC Foam Insulation
Sheets). We will need 3 of the 1 inch plain backing ones (9349K4) to wrap a few layers around it. I'll try two layers for now, since the insulation
seems to be doing quite well according to initial testing. |
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Tue Nov 28 16:02:32 2017, rana, Update, PEM, seismometer can testing
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I've ordered 4 of these from McMaster. Should be delivered to the 40m by noon tomorrow.
Quote:
For the insulation, I have decided to use this |
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Tue Apr 17 09:57:09 2018, Steve, Update, General, seismometer interfaces
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Quote:
I've been looking into recovering the seismic BLRMs for the BS Trillium seismometer. It looks like |
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Wed Apr 18 20:33:19 2018, Kevin, Update, General, seismometer interfaces
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| Steve, the pictures you posted are not the AA board I was referring to. The attached pictures show the board which is sitting beneath the GPS time server. |
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Mon Apr 15 16:10:52 2013, Den, Update, PEM, seismometer isolation kit
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We got granite bases today from the manufacturer. We plan to set them up on Wednesday, 8 am. Please note, there will be an installation
mess at Xend, Yend and corner during ~4 hours. Let us know if you have any objections to do this at this particular time.
Installation locations are specified in elog 8270, scheme attached is valid except |
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Thu Apr 18 15:08:14 2013, Steve, Update, PEM, seismometer isolation kit in place
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Quote:
We got granite bases today from the manufacturer. We plan to set them up on Wednesday, 8 am. Please note, there will be an installation |
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Tue Apr 23 16:17:45 2013, Den, Update, PEM, seismometer isolation kit in place
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Quote:
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Sat Aug 11 18:57:07 2012, Den, Update, PEM, seismometer location
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STS-2 - end of X arm
GUR 2 - isolation box
TRILLIUM - 1Y3 (DC power supply uses 1Y3 AC power, please do not close the door completely) |
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Thu Dec 13 01:49:53 2012, rana, Update, PEM, seismometers
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Quote:
I've installed Guralp readout box back and it turned out that it does not work with voltage provided from the rack (+13.76 0 -14.94). |
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Thu Dec 13 21:21:34 2012, Den, Update, PEM, seismometers
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Quote:
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Wed Jun 2 18:09:32 2010, steve, Update, PEM, seismometers off of linoleum floor
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Steve for Nancy,
Seismometer interface box ac power was turned off, Guralps disconnected and moved. Ranger locked, moved and released. Nancy will describe the rest
soon. |
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Wed Jun 2 21:21:43 2010, steve, Update, PEM, seismometers off of linoleum floor
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Quote:
Steve for Nancy, |
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Thu Jun 3 22:17:05 2010, rana, Update, PEM, seismometers off of linoleum floor
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At ~2350 UTC on June 2, the seismometers were turned off. After the granite slab was repositioned with the new lead, the Ranger was turned on,
but not the Guralps.
Now, after ~24 hours, I have put the Guralps onto the granite and turned them on. During this off time, the input channels should be ADC noise |
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Fri Jun 4 23:52:57 2010, rana, Update, PEM, seismometers off of linoleum floor
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Wed Nov 18 01:12:15 2009, rana, Update, PEM, seismometers were not saturating during Halloween weekend
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Thu Aug 23 10:08:13 2012, Steve, Update, PEM, seismometers?
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Quote:
It seems as though there is something funny going on around ~1.5 Hz, starting a little over an hour ago. |
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Sun Dec 3 05:25:59 2017, gautam, Configuration, Computers, sendmail installed on nodus
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Pizza mail didn't go out last weekend - looking at logfile, it seems like the "sendmail" service was missing. I installed sendmail following
the instructions here: https://tecadmin.net/install-sendmail-server-on-centos-rhel-server/
Except that to start the sendmail service, I used systemctl and not init.d. i.e. I ran |
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Sun Dec 3 17:01:08 2017, Koji, Configuration, Computers, sendmail installed on nodus
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An email has come at 5PM on Dec 3rd.
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Mon Jan 27 17:49:46 2014, rana, HowTo, Computer Scripts / Programs, sendmail started on nodus: fixing SwiftMail on Dokuwiki
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Since the recent filesystem fracas, the new accounts could not be created on nodus / dokuwiki (for the controls workshop, for example).
I started sendmail on nodus using the command: sudo /etc/init.d/sendmail start
and the SwiftMail plugin on there is now sending out the confirmation emails again. This will happen each time we reboot nodus, so let's replace |