| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
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 |
|
|
13252
|
Fri Aug 25 01:20:52 2017 |
gautam | Update | LSC | DRMI locking attempt | I tried some DRMI |
|
|
13251
|
Thu Aug 24 18:51:57 2017 |
Koji | Summary | LSC | First cavity length reconstruction with a neural network | Phenomenal!
|
|
|
13250
|
Thu Aug 24 18:02:16 2017 |
Gabriele | Summary | LSC | First cavity length reconstruction with a neural network | 1) Introduction
In brief, I
trained a deep neural network (DNN) to recosntuct
the cavity length, using as input only the |
8x |
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
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 |
|
|
13241
|
Tue Aug 22 16:56:54 2017 |
johannes | Summary | General | AS laser existing components inventory | I surveyed the lab today to see what we
may need to buy for the AS laser setup.
We |
|
|
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 |
|
|
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 |
|
|
13238
|
Tue Aug 22 02:19:11 2017 |
gautam | Update | ALS | ALS OLTFs | Attachment #1 shows the
results of my measurements tonight (SR785
data in Attachment #2). |
|
|
13237
|
Mon Aug 21 23:38:55 2017 |
gautam | Update | ALS | ALS out-of-loop noise | I worked a little bit on the Y arm ALS
today.
Started by locking the |
|
|
13236
|
Mon Aug 21 21:26:41 2017 |
gautam | Summary | General | Loss measurements plan | In case you want to use it, I had profiled
the Lightwave NPRO sometime back, and
we were even using it as the AUX X laser |
|
|
13235
|
Mon Aug 21 20:11:25 2017 |
johannes | Summary | General | Loss measurements plan | There are three methods we (will soon)
have available to evaluate the round-trip
dissipative losses in the arms that do not |
|
|
13234
|
Mon Aug 21 16:35:48 2017 |
gautam | Update | VAC | UPS checkup | [steve, gautam]
At Rolf/Rich Abbott's request,
we performed a check of the UPS today. |
|
|
13233
|
Mon Aug 21 14:53:32 2017 |
gautam | Update | VAC | RGA reset | [gautam, steve]
In the aftermath of the accidental
vent, it looks like the RGA was shutdown. |
|
|
13232
|
Mon Aug 21 13:07:08 2017 |
Kira | Update | PEM | temp sensor PCB | On Friday, I cleaned up the circuit so
that there are only three connections needed
(+15V, -15V, GND) and a BNC connector for |
|
|
13231
|
Mon Aug 21 09:08:54 2017 |
Steve | Update | SUS | tiny glitches | They are synchronised tiny glitches. They
are not mechanical.
|
|
|
13230
|
Sat Aug 19 01:35:08 2017 |
ericq | Update | ALS | X Arm ALS lock | My motivation tonight was to get an up-to-date
spectrum of a calibrated measurement
of the out-of-loop displacement of an arm |
|
|
13229
|
Fri Aug 18 23:59:53 2017 |
gautam | Update | ALS | X Arm ALS lock | [ericq, gautam]
I was just getting the
IFO aligned, and single arm lock going, when |
|
|
13228
|
Fri Aug 18 21:58:35 2017 |
gautam | Update | General | SUS model ASC input weirdness | I spent some time today trying to debug
this issue.
Jamie |
|
|
13227
|
Thu Aug 17 22:54:49 2017 |
ericq | Update | Computers | Trying to access JetStor RAID files | The JetStor RAID unit that we had been
using for frame writing before the fb meltdown
has some archived frames from DRFPMI locks |
|
|
13226
|
Thu Aug 17 17:33:01 2017 |
gautam | Update | SUS | MC1 <--> MC3 switched back | that's why the Autolocker clears the
outputs; we don't want to be holding
the offsets from the last ms of lock when |
|
|
13225
|
Thu Aug 17 11:17:49 2017 |
gautam | Update | SUS | MC1 <--> MC3 switched back | Seems like this modification didn't
really work. There were several large MC1
glitches, and one of them misaligned MC1 |
|
|
13224
|
Thu Aug 17 10:41:58 2017 |
Kira | Update | PEM | temp sensor PCB | Got it to work. One of the connections
was faulty. I decided to check the temperature
measured against a thermometer. The sensor |
|
|
13223
|
Thu Aug 17 08:42:27 2017 |
Steve | Update | PSL | PSL HEPA | The PSL HEPA was running noisy at 100V
The bearing is wearing out. I turned it down
to 30V It is quiet there. |
|
|
13222
|
Wed Aug 16 20:24:23 2017 |
gautam | Update | ALS | Fiber ALS | Today, with Johannes' help, I cleaned
the fiber tips of the photodiodes. The effect
of the cleaning was dramatic - see Attachments |
|
|
13221
|
Wed Aug 16 20:01:03 2017 |
gautam | Update | General | SUS model ASC input weirdness | I'm not sure if this has something
to do with the model restarts / new RCG,
but while I was re-enabling the MC watchdogs, |
|
|
13220
|
Wed Aug 16 19:50:17 2017 |
gautam | Update | SUS | MC1 <--> MC3 switched back | Now that all the CDS overview lights are
green, I decided to switch back the coil
driver outputs to their original state so |
|
|
13219
|
Wed Aug 16 18:50:58 2017 |
Jamie | Update | CDS | front-end/DAQ network down for kernel upgrade, and timing errors |
|
|
|
13218
|
Wed Aug 16 18:06:01 2017 |
Koji | Update | CDS | front-end/DAQ network down for kernel upgrade, and timing errors | We also need to copy chiara's root.
What is the best way to get the full image
of the root FS? |
|
|
13217
|
Wed Aug 16 18:01:28 2017 |
Jamie | Update | CDS | front-end/DAQ network down for kernel upgrade, and timing errors |
|
|
|
13216
|
Wed Aug 16 17:14:02 2017 |
Koji | Update | CDS | front-end/DAQ network down for kernel upgrade, and timing errors | What's the current backup situation? |
|
|
13215
|
Wed Aug 16 17:05:53 2017 |
Jamie | Update | CDS | front-end/DAQ network down for kernel upgrade, and timing errors | The CDS system has now been up moved to
a supposedly more stable real-time-patched
linux kernel (3.2.88-csp) and RCG r4447 (roughly |
|
|
13214
|
Wed Aug 16 16:05:53 2017 |
Kira | Update | PEM | temp sensor PCB | Tried taking the circuit from the breadboard
to the PCB. I attached all the components
to adapters that would allow them to be connected |
|
|
13213
|
Wed Aug 16 14:57:01 2017 |
Steve | Update | PSL | ref Cavity heating blanket power supply | The last entry I found relating to ref
cavity was
2011 Aug 19 |
|
|
13212
|
Wed Aug 16 14:54:13 2017 |
gautam | Update | CDS | PSL monitoring Acromag EPICS server restarted | [johannes,
gautam, jamie]
Made a directory |
|
|
13211
|
Tue Aug 15 16:32:42 2017 |
Jamie, Gautum | Update | CDS | GPS receiver apparently set to correct mode as "UTC" |
|
|
|
13210
|
Tue Aug 15 13:32:38 2017 |
Kira | Update | PEM | temperature sensor | Tested to make sure that even when only
the AD586 was heated that there was no change
in the reading. I did so by placing the AD586 |
|
|
13209
|
Tue Aug 15 11:50:21 2017 |
Kira | Summary | PEM | temp sensor packaging/mount | For the final packaging/mounting of the
sensor to the seismometer, I have thought
of two options. |
|
|
13208
|
Tue Aug 15 08:22:16 2017 |
Steve | Update | General | projector light bulb replaced | BL-FS300C-PH-LE was
replaced after 2,904 hrs It did
not explode this time. The 4 monts |
|
|
13207
|
Mon Aug 14 20:12:09 2017 |
Jamie, Gautum | Update | CDS | Weird problem with GPS receiver | Today we saw a weird issue with the GPS
receiver (EndRun Technologies Tempus LX).
GPS timing on fb1 (which is handled via IRIG-B |
|
|
13206
|
Mon Aug 14 20:01:38 2017 |
gautam | Update | SUS | Glitches stay on MC1 | I don't think we can say for sure. I
was just talking to EricQ about this, he
said the glitches were often seen when changing |
|
|
13205
|
Mon Aug 14 19:41:46 2017 |
Jamie | Update | CDS | front-end/DAQ network down for kernel upgrade, and timing errors | I'm upgrading the linux kernel for
all the front ends to one that is supposedly
more stable and won't freeze when we |
|
|
13204
|
Mon Aug 14 16:24:09 2017 |
gautam | Update | ALS | Fiber ALS | Today, I borrowed the fiber microscope
from Johannes and took a look at the fibers
coupled to the PDs. The PD labelled " |
|