 Fri May 30 21:30:15 2008, tobin, Configuration, Computers, svn on solaris
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I installed svn on op440m. This involved installing the following packages from sunfreeware:
apache-2.2.6-sol9-sparc-local libiconv-1.11-sol9-sparc-local subversion-1.4.5-sol9-sparc-local
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Thu May 6 19:23:54 2010, Frank, Summary, Computers, svn problems
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i tried to commit something this afternoon and got the following error message:
Command: Commit
Adding: C:\Caltech\Documents\40m-svn\nodus\frank |
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Tue Oct 1 14:12:22 2013, rana, Summary, CDS, svndumpfilter on linux1 makes NFS slow
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Yesterday and this morning's slow NFS disk access was caused by 'svndumpfilter' being run at linux1 to carve out the Noise Budget directory. It
is being moved to another server; I think the disk access is back to normal speed now. |
 Mon Nov 29 11:51:41 2010, kiwamu, Update, IOO, swaped in-vac PZT mirrors
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This morning I opened the chambers and started some in-vac works.
As explained in this entry, I swapped pzt mirror (A) and (C) successfully.
The chambers are still open, so don't be surprised. |
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Tue Nov 30 04:22:52 2010, kiwamu, Update, IOO, swaped in-vac PZT mirrors
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As a result of the vacuum work, now the IR beam is hitting ETMX.
The spot of the transmitted beam from the cavity can be found at the end table by using an IR viewer.
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Tue Oct 21 00:38:40 2014, ericq, Update, LSC, sweep + RMS as uncertainty 
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Quote:
BUT, what we really need (instead of just the DC sweeps) is the DC sweep with the uncertainty/noise displayed as a shaded area |
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Wed Oct 22 06:32:29 2014, rana, Update, LSC, sweep + RMS as uncertainty
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This is looking very useful. It will be useful if you can upload some python code somewhere so that I can muck with it.
I would guess that the right way to determine the trans RMS is just to use the single arm lock RIN and then apply that as RIN (not pure TR RMS) |
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Mon Aug 23 10:17:21 2021, Paco, Summary, Computers, system reboot glitch
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[paco]
At 09:34 PST I noted a glitch in the controls room as the machines went down except for c1ioo. Briefly, the video feeds disappeared from the
screens, though the screens themselves didn't lose power. At first I though this was some kind of power glitch, but upon checking with Jordan, it most |
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Wed Mar 13 11:34:24 2013, Steve, Update, optical tables, table covers moved to CES
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The two acrylic optical table enclosures were moved from the carpenter shop to CES. I need to order windows. The latest quotes from Laseroptik are posted at the wiki / aux_optics page.
Things to do: order windows, draw and order window flange, install surgical tubing seals, buy and line enclosures with IR shield films. |
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Fri Feb 12 18:58:46 2010, kiwamu, Update, Green Locking, take some optics away from the ETM end table
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In the last two days Steve and I took some optics away from the both ETM end table.
This is because we need an enough space to set up the green locking stuff into the end table, and also need to know how much space is available.
Optics we took away are : Alberto's RF stuff, fiber stuff and some optics |
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Tue Feb 16 09:51:22 2010, Alberto, Update, Green Locking, take some optics away from the ETM end table
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Quote:
In the last two days Steve and I took some optics away from the both ETM end |
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Wed Oct 19 05:15:44 2011, kiwamu, Update, SUS, taking care of SRM
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I made some efforts to fix the situation of SRM but it is still bad.
The POS motion wasn't well damped. Something is wrong either (maybe both) sensing part or actuation part.
I am going to check the sensing matrix with the new free swinging spectra (#5690) |
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Wed Oct 19 15:46:49 2011, kiwamu, Update, SUS, taking care of SRM
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Quote from #5691
I am going to check the sensing matrix with |
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Fri Aug 31 07:32:49 2012, Steve, Update, SUS, target for BS
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Quote:
We installed beam targets on PRM and BS suspension cages. |
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Thu Aug 30 20:35:09 2012, jamie, Update, SUS, target installed on PRM, temporary earthquake stops in place
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We installed beam targets on PRM and BS suspension cages.
On both suspensions one of the screw holes for the target actually houses the set screw for the side OSEM. This means that the screw on one
side of the target only goes in partial way. |
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Tue Jun 12 13:49:32 2012, Jamie, Configuration, Computer Scripts / Programs, tconvert
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A nicer, better maintained version of tconvert is now supplied by the lalapps package. It's called lalapps_tconvert.
I installed lalapps on all the workstations and aliased tconvert to point to lalapps_tconvert. |
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Fri Jun 5 02:59:03 2009, pete, alberto, Update, Locking, tdsavg failure in cm_step script
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the command
tdsavg 5 C1:LSC-PD4_DC_IN1
was causing grievous woe in the cm_step script. It turned out to fail intermittently at the command line, as did other LSC channels. |
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Fri Jun 5 13:51:49 2009, rob, Update, Locking, tdsavg failure in cm_step script
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Quote:
the command |
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Fri Jun 5 16:45:28 2009, rob, pete, HowTo, Computers, tdsavg failure in cm_step script
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Quote:
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Mon Jun 11 22:51:11 2012, Jenne, Update, Computers, tdsavg not working
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tdsavg isn't working:
controls@rossa:/opt/rtcds/caltech/c1/scripts/LSC 6$ tdsavg 10 C1:LSC-ASDC_IN1
ERROR: LDAQ - Unable to find NDS host "fb0" |
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Mon Jun 25 11:23:14 2012, Jenne, Update, Computers, tdsavg not working
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Quote:
LSCoffsets script, and any others depending on tdsavg will not work until this is fixed. |
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Fri Feb 24 23:14:09 2012, kiwamu, Update, CDS, tdsavg went crazy
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I found that the LSCoffset script didn't work today. The script is supposed to null the electrical offsets in all the LSC channels.
I went through the sentences in the script and eventually found that the tdsavg command returns 0 every
time. |
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Fri Dec 5 01:58:58 2008, Yoichi, Configuration, ASC, tdscntr.pl now works at 40m
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Tobin gave me the perl version of tdscntr some time ago.
Pinkesh and I modified and tested it at LHO.
I further modified it today and now it runs fine on the linux machines at the 40m. I haven't tested it with the Solaris machines.
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Thu Mar 5 23:18:38 2009, Kakeru, Configuration, Computers, tdsdata doesn't work
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I found that tdsdata doesn't work.
When I star tdsdata, he takes a few ~ 10 seconds of data, and he dies with a message "Segmentation fault".
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Sun Mar 8 23:14:52 2009, rana, Update, Computer Scripts / Programs, tdsdata doesn't work
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Matt logged in and rebuilt the TDS stuff for us on Mafalda in /cvs/cds/caltech/apps/linux/tds_090304.
He says that he can't build his stuff on 64-bit because there's not a sanctioned 64-bit build of GDS yet.
This should have all the latest fixes in it. I tried using both the old and new code from allegra and they both are fine: |
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Mon Mar 9 14:57:30 2009, Kakeru, Update, Computer Scripts / Programs, tdsdata doesn't work
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I tested new tdsdata and found it was working well.
I excited C1:SUS-ITMY_SUSPIT_EXC with tdssine, and get data from C1:LSC-TRY_OUT (testpoint) and C1:SUS- ITMY_OPLEV_PERROR (recorded point)
with new and old tdsdata. |
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Mon Mar 9 16:54:52 2009, Kakeru, Rana, Update, Computer Scripts / Programs, tdsdata doesn't work
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We confirmed that new tds(/cvs/cds/caltech/apps/linux/tds_090304/) works well on linux 64, and replaced it to /cvs/cds/caltech/apps/linux/tds/
The old /cvs/cds/caltech/apps/linux/tds is put in /cvs/cds/caltech/apps/linux/tds.bak |
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Mon Mar 9 23:13:22 2009, Yoichi, Update, Computer Scripts / Programs, tdsdata doesn't work
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Quote:
We confirmed that new tds(/cvs/cds/caltech/apps/linux/tds_090304/) works well on linux 64, and replaced it to /cvs/cds/caltech/apps/linux/tds/ |
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Fri Feb 20 01:54:18 2009, Kakeru, Update, Computer Scripts / Programs, tdsdata might have a bug
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I found a strange jump of value in my data taken with tdsdata.
I couldn't find same jump in a playback of DataViewer, so I think this is a problem of tdsdata.
Be careful when you use tdsdata! |
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Sun Apr 20 20:29:46 2008, rana, Update, Computer Scripts / Programs, tdsread bugs
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[COLOR=darkred]There seems to be a problem with reading the C1:IOO-MASTER_OVERFLOW field
when it is read in as part of an array. The only way for me to describe it
is to just attach the terminal output in this entry...this is mainly [B]for
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Mon Apr 21 13:12:21 2008, rob, Update, Computer Scripts / Programs, tdsread bugs
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[quote][COLOR=darkred]There seems to be a problem with reading the C1:IOO-MASTER_OVERFLOW field
when it is read in as part of an array. The only way for me to describe it
is to just attach the terminal output in this entry...this is mainly [B]for
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Fri Dec 7 14:14:48 2007, rob, Metaphysics, Computer Scripts / Programs, tdsread problems on Solaris
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[COLOR=darkblue]tdsread[/COLOR] has developed a strange new illness, whereby it cannot read EPICS values from [COLOR=red]two subsystems at once[/COLOR]
(e.g., getting an LSC and SUS value simultaneously). I thought this might have something to with the fact that both [COLOR=purple]losepics[/COLOR] and |
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Thu Jun 25 17:27:42 2009, rana, Update, Computers, tdsresp on linux
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| I downloaded the tdsresp.pl from LLO and put it into the various TDS/bin paths. Also updated the LLO specific path stuff. It runs. |
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Wed Jun 24 14:43:19 2009, rob, Update, Computers, tdsresp on linux => pzresp
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tdsresp is broken on our linux control room machines. I made a little perl replacement which uses the DiagTools.pm perl module, called pzresp.
It's in the $SCRIPTS/general directory, and so in the path of all the machines. I also edited the cshrc.40m file so that on linux machines tdsresp |
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Tue Nov 6 23:45:38 2007, tobin, Configuration, Computers, tektronix scripts!
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I cooked up a little script to fetch the data from the networked Tektronix scope. Example usage:
[FONT=Courier]linux2:scripts>[b]tektronix/tek-dump scope0 ch1 foo.csv[/b][/FONT]
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Tue Jul 21 17:01:18 2009, pete, DAQ, DAQ, temp channel PEM-PETER_FE
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I added a temporary channel, to input 9 on the PEM ADCU. Beware the 30, 31, and 32 inputs. I tried 32 and it only gave noise.
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Wed Aug 16 16:05:53 2017, Kira, Update, PEM, temp sensor PCB
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Tried taking the circuit from the breadboard to the PCB. I attached all the components to adapters that would allow them to be connected to the PCB.
From the first picture, the first component is AD586, the second is AD590, and the third is LT1012, along with a resistor across it. I then soldered
the connections between the components, as can be seen in the second picture. When I tested out this version of the circuit by hooking it up to the |
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Thu Aug 17 10:41:58 2017, Kira, Update, PEM, temp sensor PCB
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Got it to work. One of the connections was faulty. I decided to check the temperature measured against a thermometer. The sensor showed 26.1 C,
but the thermometer showed 25.8 C after I let them both cool down after heating them up. The temperature of the thermometer was dropping at the time of
measurement, but the temperature of the sensor was not. This is still a rough version of the final sensor, so I'm not sure what exactly causes this |
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Mon Aug 21 13:07:08 2017, Kira, Update, PEM, temp sensor PCB
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On Friday, I cleaned up the circuit so that there are only three connections needed (+15V, -15V, GND) and a BNC connector for reading the output. Today,
I added in bypass capacitors. The small yellow ones are 0.1 microF ceramic, and the large ones are 100 microF electrolytic. They are used to stabilize
the +15V and -15V inputs to the OP amp and minimize fluctuations, since it doesn't have a regulator for stability. I have also attached the circuit |
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Tue Aug 21 15:26:04 2012, Steve, Update, PEM, temp sensor for vacuum
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Temperature sensor for vacuum. How many : 2 or 3 ? $350 each
Glass encapsulated thermistor #55007 with
Ceramabond 835-m glued onto spade |
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Thu Feb 22 16:16:43 2018, Kira, Update, PEM, temp sensor input
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Rewired the temperature sensor inputs to Molex connectors so that we can now attach them to the +/- 15V Sorensens for input instead of using a power
supply. |
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Mon Feb 26 16:22:10 2018, Kira, Update, PEM, temp sensor input
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[Kira, Gautam]
We began the setup for the lab temperature sensor today. First, we needed to add in a DIN fuse for both temperature sensors, which required us
to shut down everything else first. To avoid having to do that next time, we made three instead of two spaces where we have + and - 15V. Attachment 1 shows |
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Wed Feb 28 12:31:28 2018, Kira, Update, PEM, temp sensor input
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I switched out the DIN fuses for the long cables and it fixed the issue of them not showing any votage on the other end. At first, the +15V cable
worked and the -15V didn't, but when I switched the fuse for the -15V it began working, but the +15V stopped working. I then switched out the fuse
for +15V and both cables began showing voltage. But for both the long cables and the shorter ones, they show +13.4V instead of +15V. Not sure what's |
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Tue Aug 15 11:50:21 2017, Kira, Summary, PEM, temp sensor packaging/mount
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For the final packaging/mounting of the sensor to the seismometer, I have thought of two options.
1. Attach circuit to a PCB board and place it inside the can, while leaving the AD590 open to the air inside the can.
This makes sure that the sensor gets a direct measurement of the temperature of the air in the can, as it is exposed to the air.
But, |
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Fri Sep 1 15:46:12 2017, Kira, Update, PEM, temp sensor update
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I took off the AD590 and attached it to two long wires leading out from the board. This will allow us to attach the sensor to a metal block and
not have to stick the whole board to it. I have also completed three identical copies of this and it's pretty much ready to be tested. According to
Craig and Andrew's elog here, the sensor is very noisy and they added in a low pass |
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Tue Sep 5 17:18:17 2017, Kira, Update, PEM, temp sensor update
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Today, I stuck on the sensors to a metal block using a flag, rubber bands, and some thermal paste (1st attachment). I then wrapped the whole thing in
about 4 layers of insulation and a lot of tape (2nd attachment). The only things leading out of the box were the three connections to the sensors and a
thermometer. I then connected the wires to their respective places on the board of the sensor. To get the readings out we would need to use an ADC. Gautam |
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Tue Sep 5 17:52:06 2017, Kira, Update, PEM, temp sensor update
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to get the sensors to read the same values they have to be in direct thermal contact with the metal block - there can't be any adapter board in-between
for the 2nd attempt, I also recommend encasing it in a metal block rather than just one side. You can drill some 7-10 mm diameter holes in an
aluminum or copper block. Then put the sensors in there and plug it up with some thermal paste. |
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Fri Sep 8 10:22:30 2017, Steve, Update, PEM, temp sensor update
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The weight of SS can with copper liner is 12.2 kg
Is 1 Amp for the heating jacket going to be enough? We should have some headroom.
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Tue Sep 12 11:44:16 2017, Kira, Update, PEM, temp sensor update
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Got it to work. A cable was broken and the AD586 also broke at the same time so it took a while to find the problem. I had to create a makeshift cable
out of three parts so once I replace it for an actual cable, it will be good to go for a test.
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Mon Nov 24 19:15:16 2008, rana, alberto, john, Configuration, Environment, temperature
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The PSL Room Temperature was alarming because it had gone above 23 C. This set off an unfortunate chain of events:
We found that the PSL HEPA was set low (20%). This is a fine setting for when no one is working in there but it
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