| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
12093
|
Wed Apr 27 14:06:31 2016 |
rana | Summary | General | meeting notes |
Gautam will get
help from Johannes and finish EX table by
Monday.
Steve |
|
|
12118
|
Tue May 17 05:50:43 2016 |
Varun Kelkar | Update | General | SURF 2016 | Hello, I am Varun Kelkar. I will be working
at the 40m lab as a SURF student this summer
with Eric Quintero on Audio processing for |
|
|
12121
|
Wed May 18 17:42:52 2016 |
Varun | Update | General | SURF 2016 | Finished writing the code on whitening.
I have to still test it. uploaded on github
noise cancellation repo. @eric could you |
|
|
12123
|
Fri May 20 00:06:19 2016 |
Varun | Update | General | SURF 2016 | I have written a basic version of AGC,
and have done some tests with a data file.
will do tests on whitening and agc today. |
|
|
12127
|
Mon May 23 17:47:51 2016 |
Varun | Update | General | SURF 2016 | Tested the AGC today with LSC cavity transmission
signal and error signal. Not in real time
still. |
|
|
12132
|
Wed May 25 02:54:09 2016 |
ericq | Update | General | Odds and ends | WFS locking point seemed degraded; I hand
aligned and reset the WFS offsets as usual.
ITMX oplev recentered. While doing |
|
|
12135
|
Wed May 25 14:21:29 2016 |
Max Isi | Update | General | Summary page configuration | I have modified the c1summary.ini and c1lsc.ini
configuration files slightly to avoid overloading
the system and remove the errors that were |
|
|
12136
|
Wed May 25 14:29:31 2016 |
Varun | Update | General | SURF 2016 | Edited the AGC to include overlapping frames
yesterday. forgot to put an elog on it!
|
|
|
12137
|
Thu May 26 18:10:48 2016 |
Varun | Update | General | SURF 2016 | Wrote and tested a function for downconversion.
It contains a mixer with a sinusoidal input
for modulation with the desired frequency |
|
|
12139
|
Fri May 27 11:54:22 2016 |
Varun | Update | General | Package delivery | A package labelled 'UPS Ground'
has arrived.
-Varun |
|
|
12143
|
Wed Jun 1 11:19:14 2016 |
Varun | Update | General | Update of work till now | Completed:
Wrote and tested a code for AGC
using cavity transmission signal and length |
|
|
12150
|
Fri Jun 3 17:56:14 2016 |
Varun | Update | General | DAFI update | Wrote and tested a phase vocoder, with
two of its applications:
1) Time scaling: This enables change |
|
|
12153
|
Tue Jun 7 17:21:13 2016 |
Aakash | Update | General | SURF 2016 | Hi!
I am Aakash Patil. I will be working
at the 40m lab as a SURF student with Gautam |
|
|
12154
|
Tue Jun 7 18:20:18 2016 |
Varun | Update | General | DAFI update | Tried to implement AGC on FE. Had some
trouble bringing the code into the correct
form. It looks okay now. However, this agc |
|
|
12159
|
Wed Jun 8 16:12:38 2016 |
Varun | Update | General | DAFI update | Summary: I am implementing
digital audio filtering on various interferometer |
|
|
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 |
|
|
12163
|
Thu Jun 9 18:54:40 2016 |
Aakash | Update | General | About Acromag | SURF 2016 | Today I tried to setup Acromag Busworks
card. I was able to calibrate and test it
over USB but I couldn't test it over |
|
|
12172
|
Mon Jun 13 19:30:58 2016 |
Aakash | Update | General | EPICS Installation | SURF 2016 | About acquiring data: Initially I couldn't
start with proper Acromag setup as the Raspberry
pi had a faulty SD card slot. Then Gautam |
|
|
12176
|
Tue Jun 14 11:52:08 2016 |
Johannes | Update | General | EPICS Installation | SURF 2016 | We generally want to keep the configuration
of the 40m close to that of the LIGO sites,
which is why we chose BusWorks, and it is |
|
|
12186
|
Thu Jun 16 08:52:14 2016 |
Steve | Update | General | illuminators turned off | PSL, BS, ITMY and ETMX the illuminators
were left on over night. |
|
|
12213
|
Thu Jun 23 17:24:32 2016 |
ericq | Update | General | Tweaks | I spent some time this afternoon reviving
some of my CESAR/ESCOBAR shenanigans on the
Y arm. I found it neccesary to adjust a few |
|
|
12217
|
Mon Jun 27 15:47:17 2016 |
Steve | Update | General | QPR clean room gloves | I got some
QPR Nitrile gloves. They are LIGO approved.White
nitrile gloves are naturally anti-static- |
|
|
12220
|
Tue Jun 28 16:09:41 2016 |
Praful | Update | General | 40m Summary Pages | Set up gwsumm on optimus and generated
summary pages from both L1 and C1 data. Still
a few manual steps need to be taken during |
|
|
12221
|
Tue Jun 28 16:10:49 2016 |
Praful | Update | General | Bluebird Microphones | Found 1 out of 2 bluebird microphones in
the 40m. |
|
|
12222
|
Tue Jun 28 17:11:27 2016 |
Praful | Update | General | EM172 Microphones | Found 60 EM172 microphones. Previous elog
with details: 7777. |
|
|
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. |
|
|
12225
|
Wed Jun 29 00:09:36 2016 |
Aakash | Update | General | Things from past | SURF 2016 | I have taken out the heaters and temperature
sensors from the enclosure which was made
by Megan last summer. Soon I will test and |
|
|
12233
|
Thu Jun 30 16:11:57 2016 |
ericq | Update | General | Vent Prep | I have updated
the vent
prep checklist on the wiki. Gautam and |
|
|
12235
|
Thu Jun 30 21:24:36 2016 |
ericq | Update | General | Vent Prep | Steve has ordered some teflon parts to
take the place of the metal parts in his
acetone-soaking jig. They should arrive tomorrow. |
|
|
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 |
|
|
12240
|
Mon Jul 4 10:30:37 2016 |
ericq | Update | General | Preliminary vent plans | Here are some plans / rough procedures
for this week's vent. It is unlikely
that I have though of everything, but this |
|
|
12243
|
Tue Jul 5 17:14:02 2016 |
ericq | Update | General | Vent progress | Rough summary of today's progress:
IMC locked, reasonably
aligned. (Only have MC2 trans reference, |
|
|
12245
|
Tue Jul 5 19:10:41 2016 |
rana | Update | General | Vent progress | I'd suggest clamping and moving it
to the flow bench so you can inspect with
a bright light. Then remove the wire and |
|
|
12246
|
Tue Jul 5 21:51:35 2016 |
ericq | Update | General | Vent progress | One glitch was seen to occur without a
change in the output voltage monitors in ELOG |
|
|
12247
|
Tue Jul 5 23:38:42 2016 |
gautam | Update | General | Vent progress - ETMX SUS Coil driver electronics investigation | With Koji's help, I've hacked together
an arrangement that will allow us to monitor
the output of the coil driver to the UL coil. |
|
|
12249
|
Wed Jul 6 09:34:26 2016 |
Steve | Update | General | PRM sensing voltage LR | Yesterday Q noticed that PRM_sensor_LR
was 0.098V This actually went to ~
zero on 7-3 |
|
|
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. |
|
|
12255
|
Wed Jul 6 19:36:45 2016 |
Koji | Update | General | SUS Vmon | I wanted to know what this Vmon exactly
is. D010001
is telling us that the |
|
|
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 |
|
|
12261
|
Wed Jul 6 22:58:01 2016 |
gautam | Update | General | Vent progress - ETMX SUS Coil driver electronics investigation | I've made a few changes to the monitoring
setup in the hope we catch a glitch in the
DAC output/ sus coil driver electronics. |
|
|
12262
|
Wed Jul 6 23:01:03 2016 |
gautam | Update | General | pianosa monitor dead | One of the pianosa monitors has ceased
to function |
|
|
12263
|
Thu Jul 7 00:25:07 2016 |
ericq | Update | General | Vent progress - ETMX SUS Coil driver electronics investigation | It may be advantageous to look at the coil
output data from when the OSEM damping is
on, to try and reproduce the real output |
|
|
12265
|
Thu Jul 7 10:49:03 2016 |
gautam | Update | General | Vent progress - ETMX SUS Coil driver electronics investigation |
|
|
|
12267
|
Thu Jul 7 14:45:26 2016 |
Koji | Update | General | pianosa monitor dead | Johannes, Koji
We obtained two monitors of the
same type from Larry. |
|
|
12268
|
Thu Jul 7 15:23:39 2016 |
ericq | Update | General | SUS Vmon | Based on Koji's observation of a flat
TF, it seems more likely the Vmon channels
are looking at the path I've highlighted |
|
|
12269
|
Thu Jul 7 16:05:55 2016 |
Koji | Update | General | SUS Vmon | Ah, thanks. That makes sense. In that case,
we should remove the texts "30Hz HPF"
from the suspension screens. |
|
|
12270
|
Thu Jul 7 17:12:50 2016 |
Johannes | Update | General | Vent progress | I performed a visual inspection of ITMY
in its natural habitat today. I did not get
any great pictures from the HR side because |
|
|
12271
|
Fri Jul 8 11:35:45 2016 |
gautam | Update | General | Vent progress - ETMX SUS Coil driver electronics investigation | Yesterday, I expanded the extent of the
ETMX suspension coil driver investigation.
I set up identical monitors for two more |
|
|
12272
|
Fri Jul 8 11:48:09 2016 |
Koji | Update | General | Vent progress - ETMX SUS Coil driver electronics investigation | YES
Move the suspension on the south |
|
|
12273
|
Fri Jul 8 13:01:23 2016 |
Aakash | Update | General | Acromag is talking ! | SURF 2016 | Acromag is talking now, after few changes
to the original EPICS configuration and cross
compile configuration. Modbus config files |
|