| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
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 |
|
|
13426
|
Tue Nov 14 08:54:37 2017 |
Steve | Update | IOO | MC1 glitching | |
|
|
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is out of date; probably we replaced the |
|
|
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, |
|
|
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 |
|
|
13444
|
Wed Nov 22 05:41:32 2017 |
rana | Update | Optical Levers | Oplev "noise budget" | For the OL NB, probably don't have
to fudge any seismic noise, since that's
a thing we want to suppress. More important |
|
|
13446
|
Wed Nov 22 12:13:15 2017 |
Kira | Update | PEM | seismometer can testing | Updated some values, most importantly,
the k-factor. I had assumed that it was in
the correct units already, but when converting |
|
|
13447
|
Wed Nov 22 14:47:03 2017 |
Kira | Update | PEM | seismometer can testing | For the insulation, I have decided to use
this
one (Buna-N/PVC Foam Insulation |
|
|
13448
|
Wed Nov 22 15:29:23 2017 |
gautam | Update | Optical Levers | Oplev "noise budget" | [steve,
gautam]
What is the best way to set this |
|
|
13449
|
Wed Nov 22 16:40:00 2017 |
Koji | Update | Optical Levers | Oplev "noise budget" | You may want to consult with the cryo Q
people (Brittany, Aaron) for a Si QPD. If
you want the same QPD architecture, I can |
|
|
13450
|
Wed Nov 22 17:52:25 2017 |
gautam | Update | Optimal Control | Visualizing cost functions | I've attempted to visualize the various
components of the cost function in the way
I've defined it for the current iteration |
|
|
13451
|
Wed Nov 22 19:20:01 2017 |
rana | Update | Optical Levers | Oplev "noise budget" | too complex; just shoot straight from the
HeNe to the QPD. We lower the gain of the
QPD by changing the resistors; there's |
|
|
13452
|
Wed Nov 22 23:56:14 2017 |
gautam | Update | Optical Levers | Oplev "noise budget" | Do not turn
on BS/ITMY/SRM/PRM Oplev servos without reading |
|
|
13453
|
Thu Nov 23 18:03:52 2017 |
gautam | Update | Optical Levers | Oplev "noise budget" | Here are a couple of preliminary plots
of the noise from a 20minute stretch of data
- the new curve is the orange |
|
|
13454
|
Sun Nov 26 19:38:40 2017 |
Steve | Update | VAC | TP3 drypump replaced again | The TP3 foreline pressure was 4.8 Torr,
50K rpm 0.54A and 31C........Maglev rotation
normal 560 Hz....... IFO pressure |
|
|
13455
|
Tue Nov 28 16:02:32 2017 |
rana | Update | PEM | seismometer can testing | I've ordered 4 of these from McMaster.
Should be delivered to the 40m by noon tomorrow.
|
|
|
13457
|
Wed Nov 29 15:33:16 2017 |
rana | Update | PSL | PMC locking | PMC wasn't locking. Had to power down
c1psl. Did burt restore. Still not great.
I think many of the readbacks on |
|
|
13459
|
Thu Nov 30 10:38:39 2017 |
Steve | Update | VAC | annuloses are not pumped | Annuloses are not pumped for 30 days, since
TP2 failed. IFO pressure 7e-6 Torr
it, Rga 2.6e-6 Torr |
|
|
13467
|
Thu Dec 7 16:28:06 2017 |
Koji | Update | IOO | Lots of red on the FE status screen | Once the RT machines were back, we launched
only the five IOPs. They had bunch of red
lights, but we continued to run essential |
|
|
13471
|
Wed Dec 13 09:49:23 2017 |
johannes | Update | ASS | wiring diagram | I attached a wiring schematic from the
slow DAQ to the eurocrate modules. Of these,
pins 1-32 (or 1A-16C) and pins 33-64 (17A-32C) |
|
|
13473
|
Thu Dec 14 00:32:56 2017 |
johannes | Update | ASS | Acromag new crate; c1auxex2 configured as gateway server for acromag | This splicing in of fast binary channels
we discussed at yesterday's and today's
meetings is getting messy with the current |
|
|
13474
|
Thu Dec 14 07:07:09 2017 |
rana | Update | IOO | Lots of red on the FE status screen | I had to key the c1psl crate to get the
PMC locking again. Without this, it would
still sort of lock, but it was very hard |
|
|
13475
|
Thu Dec 14 08:59:17 2017 |
Steve | Update | General | we are here | |
|
|
13477
|
Thu Dec 14 19:41:00 2017 |
gautam | Update | CDS | CDS recovery, NFS woes | [Koji, Jamie(remote), gautam]
Summary:
The CDS system seems to be back up and functioning. |
|
|
13478
|
Thu Dec 14 23:27:46 2017 |
johannes | Update | DAQ | aux chassis design | Made a front and back panel and slot panels
for DSub and IDC breakouts. I want to send
this out soon, are there any comments? Preferences |
|
|
13479
|
Fri Dec 15 00:26:40 2017 |
johannes | Update | CDS | Re: CDS recovery, NFS woes |
Quote:
|
|
|
13480
|
Fri Dec 15 01:53:37 2017 |
jamie | Update | CDS | CDS recovery, NFS woes |
Quote:
|
|
|
13481
|
Fri Dec 15 11:19:11 2017 |
gautam | Update | CDS | CDS recovery, NFS woes | Looking at the dmesg on c1iscex for example,
at least part of the problem seems to be
associated with FB1 (192.168.113.201, see |
|
|
13482
|
Fri Dec 15 17:05:55 2017 |
gautam | Update | PEM | Trillium seismometer DC offset | Yesterday, while we were bringing the CDS
system back online, we noticed that the control
room wall StripTool traces for the seismic |
|
|
13483
|
Fri Dec 15 18:23:03 2017 |
rana | Update | PEM | Trillium seismometer DC offset | UVW refers to the 3 internal, orthogonal
velocity sensors which are not aligned with
the vertical or horizontal directions. XYZ |
|
|
13485
|
Fri Dec 15 19:09:49 2017 |
gautam | Update | IOO | IMC lockloss correlated with PRM alignment? | Motivation:
To
test the hypothesis that the IMC lock duty |
|
|
13486
|
Mon Dec 18 16:45:44 2017 |
gautam | Update | IOO | IMC lockloss correlated with PRM alignment? | I stopped the test earlier today morning
around 11:30am. The log file is located at
|
|
|
13487
|
Mon Dec 18 17:48:09 2017 |
rana | Update | Computers | rossa: SL7.3 upgrade continues | Following instructions
from LLO-CDS fo the rossa upgrade. Last time
there were some issues with not being to |
|
|
13488
|
Mon Dec 18 20:37:18 2017 |
gautam | Update | PSL | PMC MEDM cleanup | There are fewer lies on this screen now.
For reference, the details of the electronics
modifications made are in this |
|
|
13492
|
Tue Dec 26 17:24:24 2017 |
Steve | Update | General | power outage | There was a power outage.
The IFO pressure is 12.8 mTorr-it
and it is not pumped. V1 is still closed. |
|
|
13493
|
Thu Dec 28 17:22:02 2017 |
gautam | Update | General | power outage - CDS recovery |
I had to manually reboot c1lsc,
c1sus and c1ioo.
I edited the
line in /etc/rt.sh (specifically, on FB /diskless/root.jessie/etc/rt.sh) |
|
|
13495
|
Tue Jan 2 15:43:35 2018 |
Steve | Update | VAC | pumpdown after power outage |
|
|