| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13239
|
Tue Aug 22 15:17:19 2017 |
ericq | Update | Computers | Old frames accessible again | It turns out the problem was just a bent
pin on the SCSI cable, likely from having
to stretch things a bit to reach optimus |
|
|
13240
|
Tue Aug 22 15:40:06 2017 |
gautam | Update | Computers | Old frames accessible again | [jamie, gautam]
I had some trouble getting the
daqd processes up and running again using |
|
|
13242
|
Tue Aug 22 17:11:15 2017 |
gautam | Update | Computers | c1iscex model restarts | [jamie, gautam]
We tried to implement the fix
that Rolf suggested in order to solve (perhaps |
|
|
13243
|
Tue Aug 22 18:36:46 2017 |
gautam | Update | Computers | All FE models compiled against RCG3.4 | After getting the go ahead from Jamie,
I recompiled all the FE models against the
same version of RCG that we tested on the |
|
|
13244
|
Tue Aug 22 23:27:14 2017 |
rana | Update | ALS | ALS OLTFs | Didn't someone look at what the OLG
req. should be for these servos at some point?
I wonder if we can make a parallel digital |
|
|
13245
|
Wed Aug 23 10:11:46 2017 |
Steve | Update | VAC | vacuum valve specifications | The V1
gate valve specs installed at 40m wiki
page. VAT model number 10846-UE44-0007 Our |
|
|
13246
|
Wed Aug 23 17:22:36 2017 |
gautam | Update | ALS | Fiber ALS - reinstalled | I completed the revamp of the box, and
re-installed the box on the PSL table today.
I think it would be ideal to install this |
|
|
13248
|
Thu Aug 24 00:39:47 2017 |
gautam | Update | LSC | DRMI locking attempt | Since the single arm locking and dither
alignment seemed to work alright after the
CDS overhaul, I decided to try some recycling |
|
|
13249
|
Thu Aug 24 17:36:11 2017 |
gautam | Update | CDS | FSS Slow Python maintenance | A couple of weeks ago, I was trying to
modernize the python version of the FSS Slow
temperature control loops, when I accidentally |
|
|
13252
|
Fri Aug 25 01:20:52 2017 |
gautam | Update | LSC | DRMI locking attempt | I tried some DRMI |
|
|
13253
|
Fri Aug 25 11:11:26 2017 |
gautam | Update | General | MC1 kicked again | Looks like MC1 got another big kick just
under 4 hours ago. None of the other optics
show any evidence of a glitch so it seems |
|
|
13254
|
Fri Aug 25 15:54:14 2017 |
gautam | Update | ALS | Fiber ALS noise measurement | [Kira, gautam]
Attachment #1 - Photo
of the revamped beat setup. The top panel |
|
|
13255
|
Fri Aug 25 17:11:07 2017 |
rana | Update | ALS | Fiber ALS noise measurement | Is it better to mount the box in the PSL
under the existing shelf, or in a nearby
PSL rack? |
|
|
13257
|
Sun Aug 27 11:57:31 2017 |
rana | Update | ALS | Fiber ALS noise measurement | It seems like the main contribution to
the RMS comes from the high frequency bump.
When using the ALS loop to lock the arm to |
|
|
13260
|
Mon Aug 28 10:28:07 2017 |
Steve | Update | VAC | RGA scan 20 day after 17 Torr | The RGA was turned on 7 days ago.
It's 46 C now. The X-arm room
tem ~20 C |
|
|
13261
|
Mon Aug 28 10:51:21 2017 |
steve | Update | SUS | ETMX damping recovered | |
|
|
13262
|
Mon Aug 28 16:20:00 2017 |
gautam | Update | CDS | 40m files backup situation | This elog is meant
to summarize the current backup situation |
|
|
13263
|
Mon Aug 28 17:13:57 2017 |
ericq | Update | CDS | 40m files backup situation | In addition to bootable full disk backups,
it would be wise to make sure the important
service configuration files from each machine |
|
|
13264
|
Mon Aug 28 23:22:56 2017 |
johannes | Update | PSL | PSL table auxiliary NPRO | I moved the axuiliary NPRO to the PSL table
today and started setting up the optics.
The Faraday Isolator was showing |
|
|
13265
|
Tue Aug 29 01:52:22 2017 |
gautam | Update | SUS | Test mass actuator calibration | [ericq, gautam]
Tonight, |
|
|
13266
|
Tue Aug 29 02:08:39 2017 |
gautam | Update | ALS | Fiber ALS noise measurement | I was having a chat with EricQ about this
today, just noting some points from our discussion
down here so that I remember to look into |
|
|
13267
|
Tue Aug 29 15:04:59 2017 |
gautam | Update | SUS | ETMY Oplev PIT loop gain changed | Last night, while we were working on the
ALS, I noticed the GTRY spot moving around
(in PITCH) on the CCD monitor in the control |
|
|
13268
|
Tue Aug 29 15:35:19 2017 |
Steve | Update | VAC | vacuum pump specifications & manuals | RP1 and RP3 roughing pump manual of
Leybold D30A oily rotory pump
Fore pump of |
|
|
13270
|
Tue Aug 29 20:04:09 2017 |
rana | Update | PSL | PSL table auxiliary NPRO | I don't understand why the 1st order
diffracted beam doesn't go to zero when
you shut off the drive. My guess is that |
|
|
13271
|
Tue Aug 29 21:36:59 2017 |
johannes | Update | PSL | PSL table auxiliary NPRO |
|
|
|
13273
|
Wed Aug 30 10:54:26 2017 |
gautam | Update | CDS | slow machine bootfest | MC autolocker and FSS loops were stuck
because c1psl |
|
|
13275
|
Wed Aug 30 15:00:06 2017 |
gautam | Update | General | Edgeswitch fiber swap | A couple of minutes ago, Larry W swapped
the fibers to our 40m Edgeswitch (BROCADE
FWS 648G) to a faster connection. This is |
|
|
13276
|
Wed Aug 30 19:49:33 2017 |
gautam | Update | LSC | REFL55 demod board debugging | Summary:
Today
I tried debugging the mysterious increase
in REFL55 signal levels in the DRMI configuration. |
|
|
13278
|
Thu Aug 31 00:19:35 2017 |
rana[^r] | Update | PSL | IMC/FSS FAST gain | nominal changed from 22 to 23 dB to minimize
PC drive RMS
|
|
|
13280
|
Thu Aug 31 00:52:52 2017 |
gautam | Update | LSC | REFL55 whitening board debugging | [rana,gautam] |
|
|
13281
|
Thu Aug 31 03:31:15 2017 |
gautam | Update | LSC | DRMI re-locked! | After our Demod/Whitening electronics investigations
suggested nothing obviously wrong, I decided
to give DRMI locking another go tonight. |
|
|
13282
|
Thu Aug 31 18:36:23 2017 |
gautam | Update | CDS | revisiting Acromag | Current
status:
There
is a single Acromag ADC unit installed in |
|
|
13283
|
Thu Aug 31 21:40:24 2017 |
gautam | Update | General | MC1 kicked again | There was a pretty large glitch in MC1
about an hour ago. The misalignment was so
large that the autolocker wasn't able |
|
|
13284
|
Fri Sep 1 08:25:08 2017 |
Steve | Update | SUS | MC1 glitching | MC1, MC2 and MC3 damping turned off to
see glitching action at 9:57am
|
|
|
13285
|
Fri Sep 1 15:46:12 2017 |
Kira | Update | PEM | temp sensor update | I took off the AD590 and attached it to
two long wires leading out from the board.
This will allow us to attach the sensor to |
|
|
13286
|
Fri Sep 1 16:27:39 2017 |
gautam | Update | SUS | MC1 glitching | I re-enabled the MC SUS damping and IMC
locking for some IFO work just now.
|
|
|
13287
|
Fri Sep 1 16:55:27 2017 |
gautam | Update | Computers | Testpoints now accessible again | Thanks to |
|
|
13288
|
Fri Sep 1 19:15:40 2017 |
gautam | Update | ALS | Fiber ALS noise measurement | Summary:
I
did some work today to see if I could use |
|
|
13289
|
Mon Sep 4 16:30:06 2017 |
gautam | Update | LSC | Oplev loop tweaking | Now that the DRMI locking seems to be repeatable
again, I want to see if I can improve the
measured MICH noise. Recall |
|
|
13290
|
Mon Sep 4 18:18:29 2017 |
rana | Update | LSC | dewhite switching: FOTON settings | not immediately necessary, since you have
already got it sort of working, but one of
these days we should optimize this for real. |
|
|
13291
|
Tue Sep 5 02:07:49 2017 |
gautam | Update | LSC | Low Noise DRMI attempt | Summary:
Tonight, I was able |
|
|
13293
|
Tue Sep 5 14:41:58 2017 |
gautam | Update | CDS | NDS2 server restarted on megatron | I was unable to download data using nds2.
Gabriele had reported similar problems a
week ago but I hadn't followed up on |
|
|
13295
|
Tue Sep 5 17:18:17 2017 |
Kira | Update | PEM | temp sensor update | Today, I stuck on the sensors to a metal
block using a flag, rubber bands, and some
thermal paste (1st attachment). I then wrapped |
|
|
13296
|
Tue Sep 5 17:52:06 2017 |
Kira | Update | PEM | temp sensor update | to get the sensors to read the same values
they have to be in direct thermal contact
with the metal block - there can't be |
|
|
13297
|
Tue Sep 5 23:02:37 2017 |
gautam | Update | CDS | slow machine bootfest | MC autolocker was not working - PCdrive was railed
at its upper rail for ~2 hours judging by |
|
|
13298
|
Tue Sep 5 23:13:44 2017 |
johannes | Update | PSL | PSL table auxiliary NPRO | I used Gautam's mode measurement of
the auxiliary NPRO (w=127.3um,
z=82mm) for the spacing of the optics |
|
|
13299
|
Wed Sep 6 01:09:11 2017 |
johannes | Update | Computer Scripts / Programs | New set of loss measurements | I
stumbled upon a faster way to stream data from |
|
|
13300
|
Wed Sep 6 23:06:30 2017 |
gautam | Update | LSC | Coil de-whitening switching investigation | Summary:
Rana
suggested checking if the coil de-whitening
switching is actually happening in the analog |
|
|
13301
|
Thu Sep 7 23:09:00 2017 |
johannes | Update | PSL | PSL table auxiliary NPRO | I brought the DEI Pulser
unit and a suitable Pockels cell
over from Bridge today (I also found an identical |
|
|
13302
|
Fri Sep 8 07:54:04 2017 |
Steve | Update | PEM | M8.1 eq | Nothing tripped. No obvious damage. |
|