| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
13830
|
Thu May 10 11:38:19 2018 |
gautam | Update | General | ITMY UL | Looking at Steve's plot, I was reminded
of the ITMY UL OSEM issue. The numbers don't
make sense to me though - 300um of DC shift |
|
|
13831
|
Thu May 10 14:13:22 2018 |
gautam | Update | General | More refinement of DARM control signal projection | Summary:
It
seems that after a x10 increase in the coil |
|
|
13833
|
Fri May 11 13:58:42 2018 |
rana | Update | General | More refinement of DARM control signal projection | I think "OLG" trace is not labeled
right; it would be good to see the actual
OLG in addition to whatever that trace actually |
|
|
13834
|
Fri May 11 18:17:07 2018 |
gautam | Update | DetChar | AUX laser PLL setup | [koji,
gautam]
As discussed at the meeting earlier |
|
|
13835
|
Fri May 11 19:02:52 2018 |
gautam | Update | General | More refinement of DARM control signal projection | I was a bit hasty in posting the earlier
plots. In the earlier plot, the "OLG"
trace was OLG * anti dewhitening as Rana |
|
|
13836
|
Sat May 12 10:02:03 2018 |
rana | Update | General | More refinement of DARM control signal projection | Good question! I've never calculated
what the resonance frequency would be if
had an inductive resistor with our cable |
|
|
13837
|
Sun May 13 15:15:18 2018 |
gautam | Update | General | CDS crash | I found the c1lsc
machine to be completely unresponsive today. |
|
|
13838
|
Sun May 13 17:31:51 2018 |
gautam | Update | General | CDS crash | As suspected, this was indeed a path problem.
Johannes will elog about it later, but in
short, it is related to some path variables |
|
|
13839
|
Sun May 13 20:48:38 2018 |
johannes | Update | General | CDS crash | I think the root of the problem is that
the /opt/rtapps/ |
|
|
13841
|
Mon May 14 18:58:32 2018 |
Kevin | Update | PonderSqueeze | Squeezing with no SRM |
Quote:
|
|
|
13842
|
Tue May 15 10:42:14 2018 |
Koji | Update | PSL | Modulation depth measurement for the 3IFO aLIGO EOM and aftermath | The marconi RF output was turned on and
thus the RF generator condition was restored
to the nominal state on Friday 11th. |
|
|
13843
|
Tue May 15 13:34:30 2018 |
Steve | Update | safety | surf safety training | Pooja and Keirthana received 40m specific
basic safety training. |
|
|
13846
|
Tue May 15 21:56:57 2018 |
gautam | Update | General | Stack measurement setup decommissioned | [steve,koji,gautam]
Since we think we already know |
|
|
13847
|
Tue May 15 22:11:38 2018 |
gautam | Update | General | IFO maintenance | Since there have been various software/hardware
activity going on (stack weighing, AUX laser
PLL, computing timing errors etc etc), I |
|
|
13849
|
Wed May 16 21:02:22 2018 |
Kevin | Update | PEM | ADC common mode rejection with new seismometer connections | As described in this
elog, the ADC for the seismometers now
has the signals wired directly to the ADC |
|
|
13850
|
Wed May 16 21:47:17 2018 |
Kevin | Update | PEM | Seismometer Noise Spectra | Earlier today Kira and I reconnected the
EX seismometer. I just took some spectra
of all three seismometers, shown in the attachments, |
|
|
13851
|
Thu May 17 09:14:38 2018 |
Steve | Update | General | Stack measurement setup decommissioned | The final set-up of stack measurment with
3 load
cells and 4 leveling |
|
|
13852
|
Thu May 17 11:56:37 2018 |
gautam | Update | General | EPICS process died on c1ioo | The EPICS process on the c1ioo front
end had died mysteriously. As a result, MC |
|
|
13859
|
Thu May 17 15:38:19 2018 |
Kira | Update | PEM | test setup with seismometer | I've moved my setup to the actual seismometer.
I attached the temperature sensor to the
seismometer (attachment 1) with duct tape, |
|
|
13860
|
Thu May 17 18:05:01 2018 |
gautam | Update | SUS | SR785 near 1X5 | I'm working near 1X5 and there is an
SR785 adjacent to the electronics rack with
some cabling running along the floor. I plan |
|
|
13861
|
Fri May 18 07:41:01 2018 |
steve | Update | SUS | clipping ITMX oplev | The ITMX oplev
still clipping
|
|
|
13862
|
Fri May 18 09:13:41 2018 |
Pooja | Update | SUS | Colored GigE image | To obtain a colored version with good contrast
of the grayscale image of scattering of light
by dust particles on the surface of test |
|
|
13864
|
Fri May 18 14:33:34 2018 |
Kira | Update | PEM | test setup with seismometer | Here is the result of my test. I think
I'll leave the can on over the weekend
because there's a long period of time |
|
|
13866
|
Fri May 18 19:10:48 2018 |
keerthana | Update | General | Code for adjusting the oscillator frequency remotly | Target: Phase locking
can be acheived by giving a scan to the oscilator
frequency. This frequency is now controlled |
|
|
13868
|
Fri May 18 20:03:14 2018 |
Pooja | Update | Cameras | Telescopic lens solution for GigE | Aim: To find telescopic lens solution to
image test mass onto the sensor of GigE camera.
I wrote a python code to find an |
8x |
|
13869
|
Sun May 20 17:43:01 2018 |
rana | Update | Electronics | How to choose resistors | Article
from EE Times, describing why metal foil
(NOT metal film) resistors are really better |
|
|
13870
|
Sun May 20 23:43:50 2018 |
gautam | Update | IOO | Coil driver noise re-measurement | Summary:
In the IMC actuation chain, it
looks like the MC1/MC3 |
|
|
13871
|
Mon May 21 10:15:35 2018 |
gautam | Update | PEM | test setup with seismometer | I guess it's fine for now while we
are still finalizing the setup at EX, but
we should eventually line up the seismometer |
|
|
13872
|
Mon May 21 14:17:28 2018 |
Kira | Update | PEM | test setup with seismometer | I have attached the graph for the seismometer
temperature fluctuations over 3 days. As
we can see, there is a noticeable fluctuation |
|
|
13874
|
Mon May 21 17:36:00 2018 |
pooja | Update | Cameras | GigE camera image of ETMX | Today Steve and I tried to to capture the
image of scattering of light by dust particles
on the surface of ETMX using GigE camera. |
|
|
13875
|
Mon May 21 18:02:55 2018 |
keerthana | Update | General | Testing of the new mini-circuits frequency counter | Today, I tested the new mini-circuit frequency
counter by connecting it with the beat signal
output. The frequency counter works fine. |
|
|
13877
|
Tue May 22 14:49:03 2018 |
Kira | Update | PEM | test setup with seismometer | It appears that one of the wires was disconnected
overnight or this morning so I wasn't
able to gather data over a full 24 hour period. |
|
|
13878
|
Tue May 22 17:26:25 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out | I have pulled out MC1
coil driver board from its Eurocrate, so |
|
|
13879
|
Tue May 22 17:29:27 2018 |
keerthana | Update | elog | MEDM Diagram for the auxilary laser system control and display. | (keerthana, gautam, jon)
In the morning, Jon gave me an
overview of the Auxiliary laser system which |
|
|
13880
|
Tue May 22 23:28:01 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out | This work is now complete.
MC1 coil driver board has been reinstalled, |
|
|
13882
|
Wed May 23 14:50:33 2018 |
Kira | Update | PEM | test setup with seismometer | This time the test went without issue.
The first attachment is the data for the
past 24 hours and the second attachment is |
|
|
13883
|
Wed May 23 17:58:48 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out |
Marked up schematic + photo post
changes uploaded to DCC
page.
There was a capacitor |
|
|
13885
|
Thu May 24 10:16:29 2018 |
gautam | Update | General | All models on c1lsc frontend crashed | All models on the c1lsc
front end were dead. Looking at slow trend |
|
|
13887
|
Thu May 24 15:18:12 2018 |
Kira | Update | PEM | PID loop restarted | Rana said that it wasn't necessary
to gather more data on the temperature fluctuations
so I have reconnected the heater circuit |
|
|
13888
|
Thu May 24 16:08:12 2018 |
Kira | Update | PEM | parts list | We will need to order a few things for
our final setup.
1U box to place the heater |
|
|
13893
|
Fri May 25 14:55:33 2018 |
Jon Richardson | Update | Cameras | Status of GigE Camera Software Fixes | There is an effort to switch to an all-digital system
for the GigE camera feeds similar to the
one running at LLO, which uses Joe Betzwieser's |
|
|
13894
|
Tue May 29 16:22:43 2018 |
Kira | Update | PEM | parts list | I've updated the parts list to be an
excel document and included every single
part we will need. This is ony a first draft |
|
|
13895
|
Tue May 29 16:33:04 2018 |
Steve | Update | PEM | air cond filters replaced | Chris replaced some air condition filters
and ordered some replacement filter today.
|
|
|
13896
|
Wed May 30 10:17:46 2018 |
gautam | Update | IOO | MC1 Coil Driver pulled out | [rana,gautam]
Summary:
Last night, Rana fact-checked my |
|
|
13897
|
Wed May 30 12:13:13 2018 |
rana | Update | Computers | NODUS: rsyncd + frames | To get our rsync back to LDAS back up,
I followed instructions from Dan Kozak:
|
|
|
13899
|
Wed May 30 23:57:08 2018 |
gautam | Update | PEM | Burning smell in office area / control room | [koji, gautam]
We noticed quite a strong burning
smell in the office area and control room |
|
|
13900
|
Thu May 31 02:04:55 2018 |
johannes | Update | PSL | AUX laser state of mind | The AUX laser is down to 5.4 mW output
power |
|
|
13901
|
Thu May 31 10:19:42 2018 |
gautam | Update | SUS | MC3 glitchy | Seems like as a result of my recent poking
around at 1X6, MC3 is more glitchy than usual
(I've noticed that the IMC lock duty |
|
|
13902
|
Thu May 31 15:36:59 2018 |
gautam | Update | General | New camera channels | Jon informed me that there are some EPICS
channels that JoeB's camera server code
looks for that don't exist. I thought |
|
|
13903
|
Thu May 31 15:48:16 2018 |
Kira | Update | PEM | running PID script with seismometer | I have attached the result of running the
PID script on the seismometer with the can
on. The daily fluctuations are no more than |
|