| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14047
|
Mon Jul 9 17:29:28 2018 |
Udit Khandelwal | Summary | Tip-TIlt | TipTilt mirror holder final changes | Final Summary of changes to mirror holder
in Tip-Tilt holder.
Determining minimum range |
|
|
14046
|
Mon Jul 9 12:36:32 2018 |
pooja | Update | General | Projector light bulb blown out | Projector light bulb blown out today. |
|
|
14045
|
Sun Jul 8 22:27:25 2018 |
keerthana | Update | | AUX diagram | (Analisa, Keerthana, Sandrine)
So far we tried four different
techniques to scan the AUX laser. They are, |
|
|
14044
|
Sun Jul 8 12:20:12 2018 |
Jon | Summary | AUX | Gouy Phase Measurements from AUX-Laser Scans | This note reports analysis of cavity scans
made by directly sweeping the AUX laser carrier
frequency (no sidebands). The measurement |
|
|
14043
|
Sat Jul 7 19:50:38 2018 |
Annalisa | Configuration | Thermal Compensation | Study about the Thermal projection setup and its effect on the cavity | I made some simulation to study the change
that the heater setup can induce on the Radius
of Curvature of the ETM. |
6x |
|
14042
|
Fri Jul 6 19:39:37 2018 |
Udit Khandelwal | Summary | General | CAD drawings of cantilever suspension required | Request
to Koji to acquire the drawings or 3D CAD
of the cantilever suspensions of the Tip-Tilt |
|
|
14041
|
Fri Jul 6 12:12:09 2018 |
Annalisa | Configuration | Thermal Compensation | Thermal compensation setup | I tried to put together a rudimentary heater
setup.
As a heating element, I used the |
|
|
14040
|
Thu Jul 5 17:58:04 2018 |
keerthana, sandrine | Update | elog | | (Analisa, Sandrine, Keerthana)
Today Annalisa helped us to understand
the new set up used to make the frequency |
|
|
14039
|
Thu Jul 5 17:33:36 2018 |
keerthana, sandrine | Update | elog | Lights not working |
N/S ARM FL.
N/S ARM
INC.
These two lights inside
the 40m-lab are not working. |
|
|
14038
|
Thu Jul 5 10:15:30 2018 |
gautam | Update | SUS | PRM watchdog tripped | PRM watchdog was tripped around 7:15am
PT today morning. I restored it. |
|
|
14037
|
Wed Jul 4 20:48:32 2018 |
pooja | Update | Cameras | Medm screen for GigE | (Gautam, Pooja)
Aim: To develop medm screen for
GigE. |
|
|
14036
|
Wed Jul 4 19:11:49 2018 |
Jon | Update | AUX | More Testing of AUX-Laser Mode Scanning | More progress on the AUX-laser cavity scans.
Changes to the Setup
For
scans, the Agilent is now being used as a |
|
|
14035
|
Tue Jul 3 11:59:10 2018 |
Jon | Update | AUX | AUX Carrier Scan of Y-Arm Cavity | I made the first successful AUX laser scan
of a 40m cavity last night.
Attachment #1 shows the measured |
|
|
14034
|
Mon Jul 2 09:01:11 2018 |
Steve | Update | SUS | ITMY_UL sensor | This bad connection is coming back
|
|
|
14033
|
Fri Jun 29 18:16:32 2018 |
Jon | Configuration | PSL | Changes to AUX Optical Layout on PSL Table | In order to use the 0th-order deflection
beam from the AOM for cavity mode scans,
I've coaligned this beam to the |
|
|
14032
|
Thu Jun 28 16:48:27 2018 |
gautam | Update | SUS | SOS cage towers | For the upcoming vent, we'd like to
rotate the SOS towers to correct for the
large YAW bias voltages used for DC alignment |
|
|
14031
|
Thu Jun 28 13:12:20 2018 |
Steve | Update | safety | surf safety training | Shruti and Sandrine received 40m specific
basic safety training this morning.
|
|
|
14030
|
Thu Jun 28 11:05:48 2018 |
shruti | Update | PEM | Seismometer temp control equipment | Earlier today I cleared up most of the
equipment at the X end near the seismometer
to make the area walkable. |
|
|
14029
|
Thu Jun 28 10:28:27 2018 |
rana | Update | CDS | vacuum pneumatic N2 pressure | we disabled logging the N2 Pressure to
a text file, since it was filling up disk
space. Now it just sends an email to our |
|
|
14028
|
Thu Jun 28 08:09:51 2018 |
Steve | Update | CDS | vacuum pneumatic N2 pressure | The fardest I can go back on channel C1:
Vac_N2pres is 320 days
C1:Vac-CC1_Hornet Presuure gauge |
|
|
14027
|
Wed Jun 27 21:18:00 2018 |
gautam | Update | CDS | Lab maintenance scripts from NODUS---->MEGATRON | I moved the N2 check script and the disk
usage checking script from the (sudo) crontab
of |
|
|
14026
|
Wed Jun 27 19:37:16 2018 |
Koji | Configuration | Computers | New NAT router installed | [Larry, Koji]
We replaced the NAT router between
martian and the campus net. We have the administrative |
|
|
14025
|
Wed Jun 27 19:05:20 2018 |
rana | Update | Computers | rossa: SL7.3 upgrade continues: DTT is back | UNELOGGED: someone has changed
Pianosa from Ubuntu/Dumbian into SL7. Might
be hackers. |
|
|
14024
|
Wed Jun 27 18:12:04 2018 |
gautam | Update | Electronics | Coil driver dewhitening | Summary:
I've been thinking about what
we need to do to the de-whitening boards |
|
|
14023
|
Tue Jun 26 22:06:33 2018 |
rana | Update | Computers | rossa: SL7.3 upgrade continues: DTT is back | I used the following commands to
get diaggui to run on rossa/SL7:
controls@rossa|lib64> |
|
|
14022
|
Tue Jun 26 20:59:36 2018 |
aaron | Update | OMC | prep for vent in a couple weeks | I checked out the elog from the vent in
October 2016 when the OMC was removed from
the path. In the vent in a couple weeks, |
|
|
14021
|
Tue Jun 26 17:54:59 2018 |
pooja | Update | Cameras | Developing neural networks | Aim: To find a model that trains
the simulated data of Gaussian beam spot
moving in a vertical direction by the application |
|
|
14020
|
Tue Jun 26 17:20:33 2018 |
Jon | Configuration | Cameras | LLO Python Camera Software is Working | Thanks to a discussion yesterday with Joe
Betzweiser, I was able to identify and fix
the remaining problem with the LLO GigE camera |
|
|
14019
|
Tue Jun 26 16:28:00 2018 |
gautam | Update | SUS | Coil driver protoboard characterization | I wanted to investigate my coil driver
noise measurement technique under more controlled
circumstances, so I spent yesterday setting |
|
|
14018
|
Tue Jun 26 10:50:14 2018 |
pooja | Update | Cameras | Beam spot tracking using OpenCV | Aim: To track the motion of beam spot in
simulated video.
I simulated a video that moves |
|
|
14017
|
Tue Jun 26 10:06:39 2018 |
keerthana | Update | AUX | First Coherent AUX Scan of PRC Using AM Sidebands | (Jon, Keerthana, Sandrine)
I am attaching the plots of the
Reflected and transmitted AUX beam. In the |
|
|
14016
|
Mon Jun 25 22:27:57 2018 |
shruti | Update | PEM | Seismometer temp control - heater circuit | After removing all the clamping screws
from the heater circuit board, I soldered
the wire connecting IRF630 to the output |
|
|
14015
|
Mon Jun 25 21:14:08 2018 |
Koji | Summary | General | Re: A summary of the Tip-TIlt Mirror Holder design changes | 3.
- Do we need this much of extended
range of the clamp location? How much range |
|
|
14014
|
Mon Jun 25 19:14:02 2018 |
Udit | Summary | General | Re: A summary of the Tip-TIlt Mirror Holder design changes | 2. Weighted screw rod at the bottom
for tilting the mirror-holder:
The screw length selected here |
|
|
14013
|
Sun Jun 24 23:13:46 2018 |
johannes | Update | General | AUX beam alignment issues | At some point we want to change the AUX
injection on the AS table to interfere less
with the normal interferometer path, and |
|
|
14012
|
Sun Jun 24 20:02:07 2018 |
gautam | Update | SUS | Some notes about coil driver noise | Summary:
For a series resistance of 4.5
kohm, we are suffering from the noise-gain |
|
|
14011
|
Sat Jun 23 20:54:35 2018 |
Koji | Update | AUX | First Coherent AUX Scan of PRC Using AM Sidebands | How much was the osc freq of the marconi?
And then how much was the resulting freq
offset between PSL and AUX? |
|
|
14010
|
Sat Jun 23 13:08:41 2018 |
Jon | Update | AUX | First Coherent AUX Scan of PRC Using AM Sidebands | [Jon, Keerthana, Sandrine]
Thu.-Fri. we continued with PRC
scans using the AUX laser, but now the "scanned" |
|
|
14009
|
Fri Jun 22 18:30:21 2018 |
gautam | Update | SUS | ITMY_UL sensor | I think if the magnet fell off, we would
see high DC signal, and not 0 as we do now.
I suspect satellite box or PD readout board/cabling. |
|
|
14008
|
Fri Jun 22 15:22:39 2018 |
sudo | Update | CDS | DTT working |
Quote:
|
|
|
14007
|
Fri Jun 22 15:13:47 2018 |
gautam | Update | CDS | DTT working | Seems like DTT also works now. The trick
seems to be to run |
|
|
14006
|
Fri Jun 22 14:18:04 2018 |
Steve | Update | PSL | Optics on AS table |
|
|
|
14005
|
Fri Jun 22 10:42:52 2018 |
pooja | Update | | Developing neural networks | Aim: To find a model that trains the simulated
data of Gaussian beam spot moving in a vertical
direction by the application of a sinusoidal |
|
|
14004
|
Fri Jun 22 08:50:33 2018 |
Steve | Update | SUS | ITMY_UL sensor | We may lost the UL magnet or LED |
|
|
14003
|
Fri Jun 22 00:59:43 2018 |
gautam | Update | CDS | pianosa functional, but NO DTT | MEDM, EPICS and dataviewer seem to work,
but diaggui still doesn't work (it doesn't
work on Rossa either, same problem as reported |
|
|
14002
|
Fri Jun 22 00:06:13 2018 |
shruti | Update | General | over-head fluorescent lights down | Two out of the four over-head fluorescent
lights in the X end of the interferometer
were flickering today. |
|
|
14001
|
Thu Jun 21 23:59:12 2018 |
shruti | Update | PEM | Seismometer temp control | We (Rana and I) are re-assembling the temperature
controls on the seismometer to attempt PID
control and then improve it using reinforcement |
|
|
14000
|
Thu Jun 21 22:13:12 2018 |
gautam | Update | CDS | pianosa upgrade | pianosa |
|
|
13999
|
Thu Jun 21 18:25:57 2018 |
gautam | Update | SUS | ETMX coil driver re-installed | Initial tests look promising. Local damping
works and I
even locked the X arm using POX, |
|
|
13998
|
Thu Jun 21 15:32:05 2018 |
gautam | Update | Electronics | EX AA filter range change | [steve, gautam]
I took this opportunity of EX downtime
to change the supply voltage for the AA unit |
|