| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3368
|
Thu Aug 5 16:18:37 2010 |
Alastair | Update | General | clocks still not locked fully - hut removed | The rubidium clocks are still not quite
locked together, though it is clear that
the beat frequency has dropped a lot since |
|
|
3433
|
Wed Aug 18 12:02:29 2010 |
Alastair | Configuration | Computers | elog had crashed again... | ...I restarted it. |
|
|
3441
|
Thu Aug 19 09:52:51 2010 |
Alastair | Update | Computers | Elog down | I restarted it using start-elog-nodus
and this worked out fine - even though I
did it from Pete's on my phone ;-) |
|
|
3442
|
Thu Aug 19 11:38:48 2010 |
Alastair | Update | Computers | ATF wiki | The ATF wiki page doesn't seem to be working
any more. Does anyone know where this
is held so we can try to get it back online? |
|
|
3443
|
Thu Aug 19 12:06:07 2010 |
Alastair | Update | Computers | ATF wiki |
|
|
|
3452
|
Fri Aug 20 20:36:05 2010 |
Alastair | Update | General | Elog | Elog was down, I restarted it. |
|
|
3461
|
Tue Aug 24 06:34:01 2010 |
Alastair | Update | General | Elog... | ...was down. Have restarted it. |
|
|
3475
|
Fri Aug 27 07:21:13 2010 |
Alastair | Update | General | elog... | was down. I restarted the version
in the 2.7.5 folder. It went down again
almost immediately but stayed up after the |
|
|
4563
|
Mon Apr 25 11:23:41 2011 |
Alastair | Bureaucracy | Computers | wiki? | 40m wiki seems to have been down for quite
a while now but I can't see any info in the
elog about it. Is there some ongoing |
|
|
4566
|
Mon Apr 25 12:55:35 2011 |
Alastair | Bureaucracy | Computers | wiki? |
|
|
|
4897
|
Tue Jun 28 11:25:56 2011 |
Alastair | Bureaucracy | Computers | restarted elog | The manual instructions on the 40m wiki
for restarting wouldn't work. I killed
the process okay, but then I got an error |
|
|
306
|
Sun Feb 10 20:47:01 2008 |
Alan | Summary | SUS | All watchdogs tripped | A moderate earthquake occurred at 11:12:06
PM (PST) on Friday, February 8, 2008.
The magnitude 5.1 event occurred 21 km (13 |
|
|
1058
|
Mon Oct 20 12:18:38 2008 |
Alan | Update | Computer Scripts / Programs | burtwb missing on Solaris but installed on linux64 | [quote]c1lsc stalled this evening, so I powercycled
it.
After that, I tried to lock arms to confirm |
|
|
1060
|
Mon Oct 20 16:18:00 2008 |
Alan | Configuration | Computers | /cvs/cds restored | [quote]I moved missing files in /cvs/cds restored
by Alan and Stuart to the original locations.
I confirmed autoburt runs, and dtt, which |
|
|
1215
|
Sun Jan 4 13:17:23 2009 |
Alan | Omnistructure | Computer Scripts / Programs | New 40mWebStatus | I have set up some code in /cvs/cds/caltech/scripts/webStatus
along with a cronjob on controls@nodus to
generate a webStatus every half hour, at |
|
|
1216
|
Mon Jan 5 11:21:05 2009 |
Alan | Omnistructure | Computer Scripts / Programs | New 40mWebStatus | [quote]
I guess we need some kind of "official" crontab
file for controls@nodus so that we know how/where |
|
|
1372
|
Mon Mar 9 10:59:05 2009 |
Alan | Omnistructure | Computers | ssh agent on fb40m restarted for backup | After the boot-fest, the nightly backup
to Powell-Booth failed, and an automatic
email got sent to me. I restarted the ssh |
|
|
1564
|
Fri May 8 10:05:40 2009 |
Alan | Omnistructure | Computers | Restarted backup since fb40m was rebooted | Restarted backup since fb40m was rebooted. |
|
|
1756
|
Thu Jul 16 09:49:52 2009 |
Alan | Update | Computers | fb40m |
|
|
|
1910
|
Sat Aug 15 10:36:02 2009 |
Alan | HowTo | Computers | nodus boot procedure | [quote]The restart procedures for the various
processes running on nodus are explained
here:
|
|
|
2445
|
Tue Dec 22 13:14:37 2009 |
Alan | Omnistructure | PEM | miracle in the 40m |
|
|
|
10020
|
Tue Jun 10 12:49:46 2014 |
Akhil | Update | Computer Scripts / Programs | Interfacing UFC-6000 with Raspberry Pi completed | Goal:
To interface the Mini Circuits
RF Frequency Counter(FC) Model UFC-6000 with |
|
|
10036
|
Fri Jun 13 11:33:55 2014 |
Akhil | Update | Electronics | Characterization of UFC-6000 RF Frequency Counter | Goal:
To characterize the Mini-Circuits
RF FC (Model UFC-6000) and plot Bode Plots |
|
|
10070
|
Thu Jun 19 12:10:18 2014 |
Akhil | Update | Electronics | Gain plots to Characterize UFC-6000 RF Frequency Counter | The
goal is to characterize the Mini-Circuits
RF FC (Model UFC-6000) by plotting |
|
|
10096
|
Wed Jun 25 01:18:24 2014 |
Akhil | Update | elog | Weekly Update | Plans
for the Week:
Phase and noise characterization |
|
|
10104
|
Wed Jun 25 19:29:19 2014 |
Akhil | Update | Electronics | Analog-to-Digital Converter | I have been trying to use an ADC
with the Raspberry Pi to be able to measure
the phase difference between FC input and |
|
|
10107
|
Fri Jun 27 12:54:13 2014 |
Akhil | Update | Electronics | Gain plots of UFC-6000 for 0.1s Sampling Rate | Finally, the 0.1s sampling rate of
the frequency counter(FC) has been achieved.
For this I had to : |
|
|
10118
|
Tue Jul 1 21:20:37 2014 |
Akhil | Update | Electronics | Gain plots of UFC-6000 for 0.1s Sampling Rate | The attached are the gain plots at
carrier frequencies of 100 MHz, 500 MHz and
1 GHz measured using IFR 2023B (Marconi). |
|
|
10129
|
Fri Jul 4 09:17:13 2014 |
Akhil | Configuration | Electronics | Setup Used for Characterization of Frequency Counter | Goal:
To |
|
|
10137
|
Mon Jul 7 13:56:13 2014 |
Akhil | Configuration | Electronics | Setup Used for Characterization of Frequency Counter | When I was trying to plot PSD of the measurements,
I still couldn't get better resolution. There
still seems to be a problem with timing and |
|
|
10151
|
Tue Jul 8 09:02:02 2014 |
Akhil | Update | Electronics | PSD Plots for different sampling times of the Frequency Counter | Although there were few timing issues
with the FC and the Raspberry Pi at the lowest
sampling time of the FC (0.1s) even after |
7x |
|
10161
|
Wed Jul 9 08:50:30 2014 |
Akhil | Update | General | Weekly Update |
Last
Week's Work |
|
|
10163
|
Wed Jul 9 12:01:43 2014 |
Akhil | Configuration | Electronics | Setup Plan for placing the Frequency Counter inside the lab | Today, me and Manasa went inside the lab
to figure out a place for the place for the
FC. The whole setup will be placed in a chassis |
|
|
10178
|
Thu Jul 10 17:53:19 2014 |
Akhil | Configuration | Computer Scripts / Programs | EPICS installed on Raspberry Pi | I finished the installation of EPICS |
|
|
10193
|
Mon Jul 14 13:03:23 2014 |
Akhil | Summary | Electronics | Timing Issues of Mini Circuits UFC-6000: Solved | Main
Problem:
The frequency counter (FC) takes |
|
|
10199
|
Tue Jul 15 01:31:13 2014 |
Akhil | Summary | Electronics | Timing Issues of Mini Circuits UFC-6000: Solved | The attached are the PSD plots with improved
FC timing(with the same code as in http://nodus.ligo.caltech.edu:8080/40m/10151).
More plots(Phase and PSD) to follow. |
|
|
10215
|
Wed Jul 16 07:51:52 2014 |
Akhil | Update | General | Weekly Update | Work
Done:
Solved all the timing |
|
|
10222
|
Wed Jul 16 22:17:40 2014 |
Akhil | Summary | Electronics | Bode Plots and complete Characterization of Frequency Counter | Goal:
To estimate the transfer function
and the noise in the FC that is a part of |
|
|
10239
|
Fri Jul 18 19:32:50 2014 |
Akhil | Summary | Electronics | Filters used inside the Frequency Counter |
Thanks Koji , for your hint
for the brain teasing puzzle. I was looking |
|
|
10246
|
Mon Jul 21 12:16:27 2014 |
Akhil | Summary | Electronics | Filters used inside the Frequency Counter | The expected bode plots for such
a filter with L= 4 is attached and compared |
|
|
10257
|
Tue Jul 22 23:10:12 2014 |
Akhil | Update | General | Weekly Update | Work
Done |
|
|
10261
|
Wed Jul 23 11:15:54 2014 |
Akhil | Update | Electronics | Installation of FCs in the 40m | As a part of installation of two(X-ARM
and Y-ARM) frequency counters in the 40m,
I have tested their performance when using |
|
|
10272
|
Thu Jul 24 19:28:43 2014 |
Akhil | Update | General | Thermal Actuator Transfer Functions | As a part of temperature actuator
characterization, today Eric Q and I made
some measurements for the open loop TF of |
|
|
10274
|
Sat Jul 26 10:12:19 2014 |
Akhil | Update | General | Data Acquisition from FC into EPICS Channels | I succeeded in creating a new channel
access server hosted on domenica ( R Pi)
for continuous data acquisition from the |
|
|
10275
|
Sat Jul 26 13:10:14 2014 |
Akhil | Update | General | Thermal Actuator Transfer Functions | Koji said that the method we used for X-arm
thermal actuator TF measurement was not correct
and suggested us to make measurements separately |
|
|
10277
|
Sat Jul 26 14:35:28 2014 |
Akhil | Update | General | Data Acquisition from FC into EPICS Channels |
|
|
|
10281
|
Mon Jul 28 16:34:02 2014 |
Akhil | Update | General | Calibration of measured Thermal Actuator TFs | To calibrate the measured TFs and
characterize the thermal actuator for the
FOL loop, we [ Me, Eric Q, Koji ] made the |
|
|
10283
|
Mon Jul 28 17:53:00 2014 |
Akhil | Update | General | Work plan for the Upcoming weeks- FOL Project | [Akhil, Harry]
Work
Completed |
|
|
10286
|
Tue Jul 29 18:00:20 2014 |
Akhil | Update | LSC | Calibration of ETMX and ETMY actuators | The ultimate goal of characterizing the
temperature actuator turned to be fruitful
in obtaining the calibration values for ETMX |
|
|
10297
|
Wed Jul 30 11:15:44 2014 |
Akhil | Update | General | Weekly Update | Plan for the week:
PID loop design and testing
with the Green laser beat note by actuating |
|