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  40m Log, Page 344 of 344  Not logged in ELOG logo
Entry  Tue Nov 24 14:33:22 2009, Alberto, Update, ABSL, working on the AP table 

I'm working on the AP table. I also opened the auxiliary NPRO shutter. The auxiliary beam is on its path on the AP table and PSL table.

    Reply  Tue Nov 24 19:16:02 2009, Alberto, Update, ABSL, working on the AP table 

Quote:

I'm working on the AP table. I also opened the auxiliary NPRO shutter. The auxiliary beam is on its path on the AP table and PSL table.

 Closing the AP table and the NPRO shutter now.

    Reply  Fri Aug 12 14:37:34 2016, Steve, Update, SEI, working seismometers as they are eq_2.1m_Geysers_CA.pngeq2.1m_GeysersCA.pngoscillations.png

2.1 mag earth quake in Norhten Ca

Our seimometers need professorial centering. Related electronics must be checked too.

Quote:

The saga has started here  We have to give credit to the Boss who fixed it. The seismometers themself are not labeled yet.

Atm6  added on 8-12-2016   EX needed to be centered

Thanks to Max for the nice plost at summery pages

 

 

Entry  Sat May 4 00:21:00 2013, rana, Configuration, Computers, workstation updates 

 Koji and I went into "Update Manager" on several of the Ubuntu workstations and unselected the "check for updates" button. This is to prevent the machines from asking to be upgraded so frequently - I am concerned that someone might be tempted to upgrade the workstations to Ubuntu 12.

We didn't catch them all, so please take a moment to check that this is the case on all the laptops you are using and make it so. We can then apply the updates in a controlled manner once every few months.

    Reply  Mon Nov 21 15:16:12 2022, Tega, Update, CDS, workstation upgrade 

We are currently working on donatella workstation upgrade, which we are calling donatellaclone for now. After installing Debian 11, we install the cds conda environment. This takes care of most of the requisite packages except `dataviewer` and `burtgooey`.

To resolve the machines on the martian network, we do the following:

sudo apt update

sudo apt install resolvconf

then create or open the file '/etc/resolvconf/resolv.conf.d/head'

sudo nano /etc/resolvconf/resolv.conf.d/head

and add the following

nameserver 192.168.113.104

nameserver 8.8.8.8

search martian

 

burtgooey:

The installation binary for burtgooey `/usr/bin/burtgooey` is a symoblic link that points to `/ligo/apps/epics-3.14.10/extensions/bin/linux-x86_64/burtgooey`. To get this working, we need to install some requisite libraries, see below:

sudo apt-get install libxm4

wget -c http://archive.ubuntu.com/ubuntu/pool/main/g/glibc/multiarch-support_2.27-3ubuntu1_amd64.deb

sudo dpkg -i multiarch-support_2.27-3ubuntu1_amd64.deb

wget -c http://ftp.debian.org/debian/pool/main/g/glibc/multiarch-support_2.28-10+deb10u1_amd64.deb

sudo dpkg -i multiarch-support_2.28-10+deb10u1_amd64.deb

wget -c https://apt.ligo-wa.caltech.edu:8443/debian/pool/bullseye/libxp6/libxp6_1.0.2-2_amd64.deb

sudo dpkg -i libxp6_1.0.2-2_amd64.deb

wget -c http://ftp.debian.org/debian/pool/main/r/readline6/libreadline6_6.3-8+b3_amd64.deb

sudo apt-get install -y libtinfo5

sudo dpkg -i libreadline6_6.3-8+b3_amd64.deb

sudo add-apt-repository universe

sudo apt-get install libncurses5

 

dataviewer:

dataviewer depends on 'grace' and 'libmotif-dev' which are not installed automatically and results in a broken initial installation, so do the following:

sudo apt-get install dataviewer

sudo apt --fix-broken install

 

Entry  Thu Sep 29 03:43:20 2011, kiwamu, Update, ASC, wrong channel assignment on IPPOS 

The channels for IPPOS had been assigned in a wrong way.

Because of this, C1:ASC-IP_POS_X_Calc corresponds to the actual vertical motion and C1:ASC-IP_POS_Y_Calc is for the horizontal motion.

We should fix the database file to get the correct vertical/horizontal corrdinate.

Entry  Tue May 17 19:38:32 2011, kiwamu, Update, SUS, wrong connection on 1X5 wrong.pngcorrect.png

Today Steve was working around the 1X5 rack to strain relief the cable jungles and the jungle is now getting less jungle.

During the work he disconnected and reconnected some cables.

So for a doublecheck I checked all the suspensions to see if the suspensions are still healthy or not.

Aha, then I found a mistake.

 

See the pictures below. It's a very subtle difference. This wrong connection prevented MC1 and MC3 from damping.

wrong.png correct.png

Entry  Fri Jan 23 16:33:27 2009, pete, Update, oplevs, x-arm oplev calibrations 
ITMXpit 71 microrad/ct
ITMXyaw 77 microrad/ct
ETMXpit 430 microrad/ct
ETMXyaw 430 microrad/ct

As with y-arm, my ITM measurements agree with Kakeru and Royal, but my ETM measurements are not quite a factor of 2 higher. Kakeru and I are investigatin.
    Reply  Mon Jul 18 17:07:12 2022, yuta, Update, LSC, x4.12 added to ETMX coil outputs to balance with ETMY 

To balance the actuation on ETMX and ETMY, x4.12 was aded to C1:SUS-ETMX_(UL|UR|LR|LL|SD)COIL FM1. OSEM damping filter gains, oplev loop gains, and alignment offsets were divided by this factor.
C1:LSC-ETMX_GAIN is now 1.

To do:
 - Balance ETM and ITM. It should make ASS more sensible.
 - Re-commission Xarm ASS and Yarm ASS.

Entry  Fri Nov 16 03:12:39 2012, Ayaka, Den, Update, Green Locking, xarm locked etmxf.png

We aligned and locked xarm for green.

etmxf.png

    Reply  Fri Nov 16 09:57:57 2012, Jenne, Update, Green Locking, xarm locked 

Quote:

We aligned and locked xarm for green.

 

 That's really, really awesome!

 

    Reply  Mon May 19 22:44:21 2014, den, Update, PEM, xend sei isolation kit is set 

Quote:

Yend seismometer isolation kit (elog 8461) hosts Guralp seismometer. I made a cable for inside connection, assembled the kit and relocated the instrument from its previous position at the yend inside the kit.

Seismometer is connected to the readout box and running.

    

 Xend internal cabling and external connector is ready. We are waiting for seismometer from Gyro lab. We still need to fix the pot with clamps after we put the instrument in.

We also need a long cable from Xend to the guralp readout box.

Entry  Thu Nov 15 21:52:48 2012, Den, Ayaka, Update, Green Locking, yarm locked yarm.pngetmyf.png

We aligned and locked Y arm for green:

  • installed camera on PSL to monitor green transmission
  • aligned green path on the ETMY table to see the beam on the PSL camera
  • misaligned ETMY and aligned ITMY to see reflected beam on REFL PD
  • installed green transmission PD on PSL
  • aligned ETMY and locked YARM to 00 mode

I've switched error channel cable to output monitor. Whitening filter is need for scattering measurements.

   etmyf.png  yarm.png

Entry  Wed Dec 18 03:29:48 2013, Den, Update, LSC, yarm locked on mc MC_ARM.pdf

As a CM slow path test I locked free swinging yarm by actuating on MC length with bandwidth of 200 Hz. Crossover with AO is not stable so far.

I used xarm as an ool frequency noise sensor. MC2 violin mode is at 645 Hz, I have added a notch filter to LSC-MC2 bank.

Entry  Sat May 17 14:48:06 2014, den, Update, PEM, yend sei isolation kit is set IMG_1405.JPGIMG_1406.JPG

Yend seismometer isolation kit (elog 8461) hosts Guralp seismometer. I made a cable for inside connection, assembled the kit and relocated the instrument from its previous position at the yend inside the kit.

Seismometer is connected to the readout box and running.

IMG_1405.JPG    IMG_1406.JPG

Entry  Mon Jul 7 08:13:41 2014, steve, Update, General, yes,there was firework 8days.png
 
Entry  Mon Apr 19 13:23:03 2010, josephb, Configuration, Computers, yum update fixed on control room machines 

I went to Ottavia, and tried running yum update.  It was having dependancy issues with mjpegtools, which was a rpmforge provided package.  In order to get it to update, I moved the rpmforge priority above (a lower number) that of epel ( epel -> 20 from 10, rpmforge -> 10 to 20).  This resolved the problem and the updates proceeded (all 434 of them). yum update on Ottavia now reports nothing needs to be done.

I went to Rosalba and found rpmfusion repositories enabled.  The only one of the 3 repositories in each file enabled was the first one.

I then added priority listing to all the repositories on Rosalba.  I set CentOS-Base and related to priority=1.  I set CentOS-Media.repo priority to 1 (although it is disabled - just to head off future problems). I set all epel related to priorities to 20. I set all rpmforge related priorities to 10.  I set all rpmfusion related priorities to 30, and left the first repo in rpmfusion-free-updates and rpmfusion-nonfree-updates were enabled.  All other rpmfusion testing repositories were disabled by me.

I then had to by hand downgrade expat to expat-1.95.8-8.3.el5_4.2.x86_64 (the rpmforge version).  I also removed and reinstalled x264.x86_64.  Lastly I removed and reinstalled lyx. yum update was then run and completed successfully.

I installed yum-priorities on Allegra and made all CentOS-Base repositories priority 1. I similarly made the still disabled CentOS-Media priority 1.  I made all epel related repos priority 20.  I made all lscsoft repos priority=50 (not sure why its on Allegra and none of the other ones).  I made all rpmforge priorities 10.  I then ran "yum update" which updated 416 packages.

 

So basically all the Centos control room machines are now using the following order for repositories:

CentOS-Base > rpmforge > epel > (rpmfusion - rosalba only) > lscsoft (allegra only)

I'm not sure if rpmfusion and lscsoft are necessary, but I've left them for now.  This should mean "yum update" will have far fewer problems in the future.

 

Entry  Thu Mar 5 02:24:19 2009, rana, Configuration, Computers, yum.repos.d 

I added the following repos which I found on allegra to megatron and then did a 'yum install sshfs' on both machines:

allegra:yum.repos.d>l
total 28
-rw-r--r-- 1 root root  428 Feb 12 16:47 rpmforge.repo
-rw-r--r-- 1 root root  684 Feb 12 16:47 mirrors-rpmforge
-rw-r--r-- 1 root root 1054 Feb 12 16:47 epel-testing.repo
-rw-r--r-- 1 root root  954 Feb 12 16:47 epel.repo
-rw-r--r-- 1 root root  626 Feb 12 16:47 CentOS-Media.repo
-rw-r--r-- 1 root root 1869 Feb 12 16:47 CentOS-Base.repo
-rw-r--r-- 1 root root  179 Feb 12 16:47 adobe-linux-i386.repo

This also required me to import the rpmforge GPG key:

sudo rpm --import http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt

Entry  Tue May 5 09:22:46 2009, caryn, Update, PEM, zeros zerotest2.pngzerotest.png

For several of the channels on the PEM ADCU, zeros are occuring at the same time. Does anyone know why that might happen or how to fix it?

    Reply  Thu Jun 7 12:49:50 2012, Jamie, Update, Computers, zita network configured 

Added zita to the martian host table, and configured his network accordingly:

zita            A       192.168.113.217

https://wiki-40m.ligo.caltech.edu/Martian_Host_Table

    Reply  Tue Nov 12 21:50:01 2013, rana, Update, , zita network configured 

 

 I installed 'nfs-client' on zita (the StripTool terminal). It now has mounted all the shared disks, but still can't do StripTool since its a 32-bit machine and our StripTool is 64.

Entry  Wed Jun 6 22:25:05 2012, Jamie, Update, Computers, zita now running ubuntu 10.04 

I'll finish the rest of the config to turn it into a full-fledged workstation tomorrow.

    Reply  Wed Nov 6 17:45:34 2019, gautam, Update, LSC, ~ 

Here is a comparison of the response of various DoFs in our various RFPD sensors for two different CARM offsets. Even in the case of the smaller CARM offset of ~1kHz, we are several linewidths away from the resonance. Need to do some finesse modeling to make any meaningful statement about this - why is the CARM response in REFL11 apparently smaller for the smaller CARM offset?

If you mistrust my signal processing, the GPS times for which I ran the sensing lines are:

CARM offset = ~30kHz (arm transmission <0.02) --- 1257064777+5min

CARM offset = ~1kHz (arm transmission ~5) --- 1257065566+5min

Quote:

Summary:

There seems to be stronger-than-expected coupling between CARM and the 3f sensors. 

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