ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13139
|
Mon Jul 24 19:57:54 2017 |
gautam | Update | CDS | IMC locked, Autolocker re-enabled | Now that all the front end models are running,
I re-aligned the IMC, locked it manually,
and then tweaked the alignment some more. |
|
|
13140
|
Tue Jul 25 00:03:01 2017 |
rana | Omnistructure | Treasure | coffee pot lid | I
have recommissioned the Zojirushi coffee
pot lid. You may, once again, align the dots |
|
|
13141
|
Tue Jul 25 02:03:59 2017 |
gautam | Update | Optical Levers | Optical lever tuning thoughts | Summary:
Currently, I am unable to engage
the coil-dewhitening filters without destroying |
|
|
13142
|
Tue Jul 25 08:48:57 2017 |
Steve | Update | VAC | RGA scan at d278 | The RGA did not shut down at the turbo
pump controller failing.
|
|
|
13143
|
Tue Jul 25 14:04:06 2017 |
Steve | Update | VAC | turbo controller installed and we are running at vac normal | Gautam and Steve,
Spare Varian turbo-V 70 controller,
Model 969-9505, sn 21612 was swapped in. |
|
|
13144
|
Tue Jul 25 14:27:19 2017 |
Steve | Update | safety | safety training | Kira Dubrovina and Naomi Wharton received
40m specific basic safety training. |
|
|
13145
|
Wed Jul 26 19:13:07 2017 |
Jamie | Update | CDS | daqd showing same instability as before | I recompiled daqd on the updated fb1, similar
to how I had before, and we're seeing
the same instability: process crashes when |
|
|
13146
|
Thu Jul 27 22:42:24 2017 |
gautam | Update | SUS | Seismic noise, DAC noise, and Coil Driver electronics noise | Summary:
|
|
|
13147
|
Fri Jul 28 15:36:32 2017 |
gautam | Update | Optical Levers | Optical lever tuning thoughts | Attachment #1 - Measured
error signal spectrum |
|
|
13148
|
Fri Jul 28 16:47:16 2017 |
gautam | Update | General | PSL StripTool flatlined | About 3.5 hours ago, all the PSL wall StripTool
traces "flatlined", as happens
when we had the EPICS freezes in the past |
|
|
13149
|
Fri Jul 28 20:22:41 2017 |
Jamie | Update | CDS | possible stable daqd configuration with separate DC and FW | This week Jonathan Hanks and I have been
trying to diagnose why the daqd has been
unstable in the configuration used by the |
|
|
13150
|
Sat Jul 29 14:05:19 2017 |
gautam | Update | General | PSL StripTool flatlined | The PMC was unlocked when I came in ~10mins
ago. The wall StripTool traces suggest it
has been this way for > 8hours. I was |
|
|
13151
|
Sat Jul 29 16:24:55 2017 |
jamie | Update | General | PSL StripTool flatlined |
|
|
|
13152
|
Mon Jul 31 15:13:24 2017 |
gautam | Update | CDS | FB ---> FB1 | [jamie, gautam]
In order to test the new daqd config
that Jamie has been working on, we felt it |
|
|
13153
|
Mon Jul 31 18:44:40 2017 |
Jamie | Update | CDS | CDS system essentially fully recovered | The CDS system is mostly fully recovered
at this point. The mx_streams are all
flowing from all front ends, and from all |
|
|
13154
|
Mon Jul 31 20:35:42 2017 |
Koji | Summary | Computers | Chiara backup situation summary | Summary
- CDS Shared files system: backed
up |
|
|
13155
|
Mon Jul 31 23:39:02 2017 |
rana | Update | COC | Cavity Scan Simulation Code | Hiro Yamamoto has updated SIS (Static Interferometer
Simulation) to allow us to do the MCMC based
inference of the 40m arm cavity mirror maps. |
|
|
13156
|
Tue Aug 1 16:05:01 2017 |
gautam | Update | Optical Levers | Optical lever tuning - cost function construction | Summary:
I've been trying |
|
|
13157
|
Tue Aug 1 19:23:06 2017 |
rana | Update | ALS | X - arm alignment | Rana, Naomi
We dither locked the X arm and
then aligned the green beam to it using the |
|
|
13158
|
Wed Aug 2 09:40:55 2017 |
Steve | Update | Electronics | spare ILIGO electronics | Spare ILIGO electronics temporarly stored
in the east arm. We need cabinet space. |
|
|
13159
|
Wed Aug 2 14:47:20 2017 |
Koji | Summary | Computers | Chiara backup situation summary | I further made the burt snapshot directories
compressed along with ELOG
11640. This freed up additional ~130GB. |
|
|
13160
|
Wed Aug 2 15:04:15 2017 |
gautam | Configuration | Computers | control room workstation power distribution | The 4 control room workstation CPUs (Rossa,
Pianosa, Donatella and Allegra) are now connected
to the UPS. |
|
|
13161
|
Thu Aug 3 00:59:33 2017 |
gautam | Update | CDS | NDS2 server restarted, /frames mounted on megatron | [Koji, Nikhil, Gautam]
We couldn't get data using
python nds2. There seems to have been many |
|
|
13162
|
Thu Aug 3 10:51:32 2017 |
rana | Update | CDS | NDS2 server restarted, /frames mounted on megatron | same issue on NODUS; I edited the /etc/fstab
and tried mount -a, but it gives this error:
controls@nodus|~ 1> sudo |
|
|
13163
|
Thu Aug 3 11:11:29 2017 |
gautam | Update | CDS | NDS2 server restarted, /frames mounted on nodus | I added nodus' eth0 IP (192.168.113.200)
to the list of allowed nfs clients in /etc/exportfs
on fb1, and then ran sudo mount -a on nodus. |
|
|
13164
|
Thu Aug 3 19:46:27 2017 |
Jamie | Update | CDS | new daqd restart procedure | This is the daqd restart procedure:
$ ssh |
|
|
13165
|
Thu Aug 3 20:15:11 2017 |
Jamie | Update | CDS | dataviewer can not raise test points | For some reason dataviewer is not able
to raise test points with the new daqd setup,
even though dtt can. If you raise a |
|
|
13166
|
Fri Aug 4 09:07:28 2017 |
rana | Update | CDS | CDS system essentially NOT fully recovered | Tried getting |
|
|
13167
|
Fri Aug 4 18:25:15 2017 |
gautam | Update | General | Bilinear noise coupling | [Nikhil, gautam]
|
|
|
13168
|
Sat Aug 5 11:04:07 2017 |
gautam | Update | SUS | MC1 glitches return | See Attachment #1, which is full (2048Hz)
data for a 3 minute stretch around when I
saw the MC1 glitch. At the time of the glitch, |
|
|
13169
|
Mon Aug 7 16:00:41 2017 |
rana | Update | General | Bilinear noise coupling | These are not the angular test
parameters that we're looking for:
recall that what we want |
|
|
13170
|
Mon Aug 7 22:50:57 2017 |
Koji | Update | General | New wifi router for the GC network installed | I have replaced the old 11n wifi router
(CISCO / Linksys) for the GC network with
a new one with 11ac technology. |
|
|
13171
|
Tue Aug 8 17:04:26 2017 |
Steve | Update | VAC | unintended pump down | IFO pressure 2 Torr, PSL
shutter closed. I'm pumping down
with 2 roughing pumps with ion pump gate |
|
|
13172
|
Tue Aug 8 17:44:11 2017 |
Steve | Update | VAC | unintended pump down | Pumpdown stopped for over night at
~ 1 Torr
The roughing line disconnected. |
|
|
13173
|
Tue Aug 8 20:48:06 2017 |
gautam | Update | SUS | ITMX stuck | Somewhere between CDS model restarts |
|
|
13174
|
Wed Aug 9 11:33:49 2017 |
gautam | Update | Electronics | MC2 de-whitening | Summary:
The analog de-whitening filters
for MC2 are different from those on the other |
|
|
13175
|
Wed Aug 9 11:59:51 2017 |
Steve | Update | VAC | unintended pump down at vacuum normal | pd80b has reached Vac Normal. IFO pressure
0.5 mTorr
We need our vauum channels back |
|
|
13176
|
Wed Aug 9 12:05:57 2017 |
rana | Update | Electronics | data archiving | This kind of data fitting and analysis
is really useful. We should figure out a
way to archive it. Perhaps the data files |
|
|
13177
|
Wed Aug 9 12:35:47 2017 |
gautam | Update | ALS | Fiber ALS | Last week, we were talking about reviving
the Fiber ALS box. Right now, it's not
in great shape. Some changes to be made: |
|
|
13178
|
Wed Aug 9 15:15:47 2017 |
gautam | Update | SUS | MC1 glitches return | Happened again just now, although the characteristics
of the glitch are very different from the
previous post, its less abrupt. Only actuation |
|
|
13179
|
Wed Aug 9 16:34:46 2017 |
rana | Update | VAC | Vacuum Document recovered | Steve and I found the previous draft of
the 40m Vacuum Document. Someone in 2015
had browsed into the Docs history and then |
|
|
13180
|
Wed Aug 9 19:21:18 2017 |
gautam | Update | ALS | ALS recovery | Summary:
Between frequent MC1 excursions,
I worked on ALS recovery today. Attachment |
|
|
13181
|
Thu Aug 10 09:10:55 2017 |
steve | Update | General | dataviewer is recovering | It can look back 7 days trends now. There
is still no vacuum channels. I can bring
back the channels through the restore directory, |
|
|
13182
|
Thu Aug 10 09:31:57 2017 |
Steve | Update | SUS | ITMX sensor voltage | There must be some bad connection
|
|
|
13183
|
Thu Aug 10 14:13:23 2017 |
Kira | Summary | PEM | temperature sensor | Goal is to build a temperature sensor accurate
to 1 mK. Schematic is shown below. This does
not take into account the DC gain that occurs. |
|
|
13184
|
Thu Aug 10 14:14:17 2017 |
Kira | Update | PEM | previously built temp sensor | I decided to see what was inside the sensor
that had been previously made. According
to elog 1102, the temperature sensor is LM34, |
|
|
13185
|
Thu Aug 10 14:25:52 2017 |
gautam | Update | CDS | Slow EPICS channels -> Frames re-enabled | I went into /opt/rtcds/caltech/c1/target/daqd, |
|
|
13186
|
Thu Aug 10 15:45:34 2017 |
Steve | Update | VAC | accidental vent to 17 Torr | Finally we got the cold cathode gauge working.
IFO pressure 7e-6 Torr-it, vacuum normal
valve configuration with all 4 ion pump gate |
|
|
13187
|
Thu Aug 10 21:01:43 2017 |
gautam | Update | SUS | MC1 glitches debugging | I have squished cables in all the places
I can think of - but MC1 has been glitching
regularly today. Before starting to pull |
|
|
13188
|
Thu Aug 10 21:22:06 2017 |
rana | Summary | PEM | temperature sensor |
Should we use the AD590 or the
AD592? They're sort of the same, but
have slightly different packages and specs.
Given |
|