| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13392
|
Wed Oct 18 17:34:09 2017 |
gautam | Update | SUS | ASDC | Summary:
The signal path for the ASDC signal
is AS55 |
|
|
13393
|
Wed Oct 18 19:17:42 2017 |
gautam | Update | General | PRC angular feedforward | Last night, I collected ~30mins of data
for the vertex seismometer channels and the
POP QPD PIT/YAW signals with the PRMI locked |
|
|
13394
|
Wed Oct 18 23:11:53 2017 |
gautam | Update | CDS | FEs unresponsive | This happened again just now - it was roughly
this time when this happened last night as
well. |
|
|
13395
|
Thu Oct 19 15:42:03 2017 |
jamie | Summary | LSC | MICH/PRCL reconstruction neural network running on c1lsc | Gabriele's
PRCL/MICH reconstruction neural network is
now running on c1lsc. |
|
|
13396
|
Fri Oct 20 16:30:17 2017 |
gautam | Update | CDS | FB1 installed on shelves | [steve, jamie, gautam]
The machine that now serves as
out Frame Builder, FB1, was sitting on top |
|
|
13397
|
Mon Oct 23 09:17:41 2017 |
Steve | Update | PEM | ants alart | Do not leave organic trash or food boxes
in the 40m to attrack ants ! |
|
|
13398
|
Tue Oct 24 16:22:53 2017 |
gautam | Update | CDS | Toy DARM model setup in c1tst | [alex, gautam]
Alex is going to have an undergrad
work on a calibration optimization project |
|
|
13399
|
Tue Oct 24 16:43:11 2017 |
Steve | Update | CDS | slow machine bootfest | [ Gautam , Steve ]
c1susaux |
|
|
13400
|
Tue Oct 24 20:14:21 2017 |
jamie | Summary | LSC | further testing of c1dnn integration; plugged in to DAQ | In order to try to isolate CPU6 for the
c1dnn neural network reconstruction model,
I set the CPUAffinity in /etc/systemd/system.conf |
|
|
13401
|
Wed Oct 25 09:32:14 2017 |
Gabriele | Summary | LSC | further testing of c1dnn integration; plugged in to DAQ |
|
|
|
13402
|
Fri Oct 27 09:34:20 2017 |
Steve | Update | PEM | earthquakes | Lompoc 4.3M and 3.7M Avalon
|
|
|
13403
|
Fri Oct 27 10:14:11 2017 |
Steve | Update | VAC | RGA scan at day 372 | Valve configuration: Vacuum normal
Note: Tp2 running at 75Krpm 0.25A
26C has a load high pitch sound today. |
|
|
13404
|
Sat Oct 28 00:36:26 2017 |
gautam | Update | CDS | 40m files backup situation - ddrescue | None of the 3 dd backups I made were bootable
- at boot, selecting the drive put me into
grub rescue mode, which seemed to suggest |
|
|
13405
|
Sun Oct 29 16:40:17 2017 |
rana | Summary | Computers | disk cleanup | Backed up all the wikis. Theyr'e in
wiki_backups/*.tar.xz (because xz -9e gives
better compression than gzip or bzip2) |
|
|
13406
|
Mon Oct 30 08:08:06 2017 |
Steve | Update | safety | safety training | Udit Kahndelwal received 40m specific basic
safety traning on Friday, Oct. 27 |
|
|
13407
|
Mon Oct 30 10:09:41 2017 |
Steve | Update | VAC | TP2 failed | IFO pressure 1.2e-5 Torr at 9:30am
|
|
|
13408
|
Mon Oct 30 11:15:02 2017 |
gautam | Update | CDS | slow machine bootfest + vacuum snafu | Eurocrate key turning reboots today morning
for c1psl |
|
|
13409
|
Mon Nov 6 09:09:43 2017 |
Steve | Update | VAC | setting up new TP2 turbo | Our new Agilent Technology TwisTorr
84FS AG rack controller ( English Manual
pages 195-297 ) RS232/485, product |
|
|
13410
|
Mon Nov 6 11:15:43 2017 |
gautam | Update | CDS | slow machine bootfest + IFO re-alignment | Eurocrate key turning reboots today morning
for |
|
|
13411
|
Mon Nov 6 18:22:48 2017 |
jamie | Summary | LSC | current procedure for running c1dnn code | This is the current procedure to start
the c1dnn model:
|
|
|
13412
|
Tue Nov 7 17:45:05 2017 |
gautam | Update | LSC | DRMI Nosie Budget v3.1 | Some days ago, I had tried to measure the
SRCL->MICH and PRCL->MICH cross couplings
using broadband noise injected between 120-180 |
|
|
13413
|
Tue Nov 7 22:56:21 2017 |
gautam | Update | LSC | DRMI locking recovered | I hadn't re-locked the DRMI after the
work on the AS55 demod board. Tonight, I
was able to recover the DRMI locking with |
|
|
13414
|
Wed Nov 8 00:28:16 2017 |
gautam | Update | LSC | Laser intensity coupling measurement attempt | I tried measuring the coupling of PSL intensity
noise by driving some broadband noise bandpassed
between 80-300Hz using the spare DAC channel |
|
|
13415
|
Wed Nov 8 09:37:45 2017 |
rana | Update | LSC | DRMI Nosie Budget v3.1 | why no oplev trace in the NB ?
|
|
|
13416
|
Wed Nov 8 09:59:12 2017 |
gautam | Update | LSC | DRMI Nosie Budget v3.1 | The Oplev trace is missing for now, as
I have not re-measured the A2L coupling since
modifying the Oplev loop shape (specifically |
|
|
13417
|
Wed Nov 8 12:19:55 2017 |
gautam | Update | SUS | coil driver series resistance | We've been talking about increasing
the series resistance for the coil driver
path for the test masses. One consequence |
|
|
13418
|
Wed Nov 8 14:28:35 2017 |
gautam | Update | General | MC1 glitches return | There hasn't been a big glitch that
misaligns MC1 by so much that the autolocker
can't lock for at least 3 months, seems |
|
|
13419
|
Wed Nov 8 16:39:24 2017 |
Kira | Update | PEM | ADC noise measurement | Gautam and I measured the noise of the
ADC for channels 17, 18, and 19. We plan
to use those channels for measuring the noise |
|
|
13420
|
Wed Nov 8 17:04:21 2017 |
gautam | Update | CDS | gds-2.17.15 [not] installed | I wanted to use the foton.py utility for
my NB tool, and I remember Chris telling
me that it was shipping as standard with |
|
|
13421
|
Thu Nov 9 10:51:37 2017 |
gautam | Summary | LSC | current procedure for compiling and installing c1dnn code | Jamie pointed out that the compile and
install instructions are different for c1dnn:
|
|
|
13422
|
Thu Nov 9 15:33:08 2017 |
johannes | Update | CDS | revisiting Acromag |
|
|
|
13423
|
Fri Nov 10 08:52:21 2017 |
Steve | Update | VAC | TP3 drypump replaced | PSL shutter closed at 6e-6 Torr-it
The foreline pressure
of the drypump is 850 mTorr at 8,446 hrs |
|
|
13424
|
Fri Nov 10 13:46:26 2017 |
Steve | Update | PEM | M3.1 local earthquake | BOOM
SHAKA-LAKA |
|
|
13425
|
Fri Nov 10 18:57:41 2017 |
rana | Summary | Electronics | Ithaca 1201 vs. SR560 | I characterized the black
Ithaca 1201 pre-amp that we had sitting
in the racks. It works fine and the input |
|
|
13426
|
Tue Nov 14 08:54:37 2017 |
Steve | Update | IOO | MC1 glitching | |
|
|
13427
|
Tue Nov 14 16:02:43 2017 |
Kira | Summary | PEM | seismometer can testing | I made a model for our seismometer can
using actual data so that we know approximately
what the time constant should be when we |
|
|
13428
|
Wed Nov 15 01:37:07 2017 |
gautam | Update | LSC | DRMI low freq. nosie improved | Pianosa
just crashed and ate my elog, along with |
|
|
13429
|
Thu Nov 16 00:14:47 2017 |
Udit Khandelwal | Update | SUS | SOS Sapphire Prism design | Summary:
SOS solidworks model is
nearly complete
Having trouble |
|
|
13430
|
Thu Nov 16 00:45:39 2017 |
gautam | Update | SUS | SOS Sapphire Prism design |
|
|
|
13431
|
Thu Nov 16 00:53:26 2017 |
gautam | Update | LSC | DRMI noise sub-budgets | I've incorporated the functionality
to generate sub-budgets for the various grouped
traces in the NBs (e.g. the "A2L" |
|
|
13432
|
Thu Nov 16 13:57:01 2017 |
gautam | Update | Optical Levers | Optical lever noise | I disabled the OL loops for ITMX, ITMY
and BS at GPStime 1194897655 to come up with
an Oplev noise budget. OL spots were reasonably |
|
|
13433
|
Thu Nov 16 15:43:01 2017 |
rana | Update | Optical Levers | Optical lever noise | I bet the calibration
is out of date; probably we replaced the |
|
|
13434
|
Fri Nov 17 16:31:11 2017 |
aaron | Omnistructure | Computers | Acromag wired up | Acromag
Wireup Update
I
finished wiring up the Acromags to replace |
|
|
13435
|
Fri Nov 17 17:10:53 2017 |
rana | Omnistructure | Computers | Acromag wired up | Exactly: you'll have to list explicitly
what functions those channels had so that
we know what we're losing before we make |
|
|
13436
|
Tue Nov 21 11:21:26 2017 |
gautam | Update | CDS | RFM network down | I noticed yesterday evening that I wasn't
able to engage the single arm locking servos
- turned out that they weren't getting |
|
|
13437
|
Tue Nov 21 11:37:29 2017 |
gautam | Update | Optical Levers | BS OL calibration updated | I calibrated the BS oplev PIT and YAW error
signals as follows:
Locked X-arm, ran dither |
|
|
13438
|
Tue Nov 21 16:00:05 2017 |
Kira | Update | PEM | seismometer can testing | 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 |
|
|
13439
|
Tue Nov 21 16:28:23 2017 |
gautam | Update | Optical Levers | BS OL calibration updated | The numbers I have from the fitting don't
agree very well with the OSEM readouts. Attachment
#1 shows the Oplev pitch and yaw channels, |
|
|
13440
|
Tue Nov 21 17:51:01 2017 |
Koji | Configuration | Computers | nodus post OS migration admin | The post OS migration admin for nodusa
bout apache, elogd, svn, iptables, etc can
be found in https://wiki-40m.ligo.caltech.edu/NodusUpgradeNov2017 |
|
|
13441
|
Tue Nov 21 23:04:12 2017 |
gautam | Update | Optical Levers | Oplev "noise budget" | Per our discussions in the meetings over
the last week, I've tried to put together
a simple Oplev noise budget. The only two |
|