| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
15116
|
Fri Jan 10 19:48:46 2020 |
yehonathan | Update | PSL | Assembly underway for c1psl upgrade | {Yehonathan, Jon}
I finished pre-wiring the PSL chassis.
I mounted the Acromags on the DIN rails and |
|
|
15118
|
Mon Jan 13 16:05:18 2020 |
yehonathan | Update | PSL | Assembly underway for c1psl upgrade | {Yehonathan, Jon}
I configured the Acromag channels
according to the Slow |
|
|
15120
|
Tue Jan 14 17:16:43 2020 |
yehonathan | Update | PSL | Assembly underway for c1psl upgrade | {Yehonathan, Jon}
I isolated a BIO Acromag completely
from the chassis and powered it up. The inverted |
|
|
15262
|
Tue Mar 10 14:30:16 2020 |
yehonathan | Update | SUS | | ETMX was grossly misaligned.
I re-aligned it and the X arm now
locks. |
|
|
15263
|
Tue Mar 10 19:58:16 2020 |
yehonathan | Update | SUS | | I returned the triggering threshold to
normal values (5/3).
|
|
|
15614
|
Tue Oct 6 07:37:20 2020 |
yehonathan | Update | Wiki | New TIS measurements of 40m Optics | LiYuan has kindly done some Total Integrating
Sphere (TIS) measurements on ITMU01 and ITMU02.
A summary of the measurement is attached. |
|
|
15788
|
Tue Feb 2 17:09:17 2021 |
yehonathan | Update | BHD | SOS assembly | I set up a working area on the table next
to the south flow bench (see attachment).
I also brought in a rolling table for some |
|
|
15816
|
Thu Feb 18 15:15:12 2021 |
yehonathan | Update | SUS | OSEM testing for SOSs | I am setting up a testing rig for the OSEMs
we recently obtained. I found the schematic
for the OSEM assembly from which the pin |
|
|
15837
|
Wed Feb 24 10:09:16 2021 |
yehonathan | Update | SUS | OSEM testing for SOSs | Yes, my phone camera mirrored the image.
Sorry for the confusion.
I see you already uploaded the |
|
|
16062
|
Wed Apr 21 11:09:57 2021 |
yehonathan | Update | PSL | Laser amplifier | I went to the TCS lab to take a look at
the chillers lying around. I spotted two
chillers: |
|
|
16253
|
Wed Jul 21 18:08:35 2021 |
yehonathan | Update | Loss Measurement | Loss measurement | {Gautam, Yehonathan, Anchal, Paco}
We prepared for the loss measurement
using DC reflection method. We did the following |
|
|
16371
|
Fri Oct 1 14:25:27 2021 |
yehonathan | Summary | SUS | PRM and BS Angular Actuation transfer function magnitude measurements | {Paco, Yehonathan, Hang}
We measured the sensing PRMI sensing
matrix. Attachment 1 shows the results, the |
|
|
16779
|
Thu Apr 14 11:52:57 2022 |
yehonathan | Summary | BHD | Part IIa of BHR upgrade - POY11 debugging | {JC, Paco, Yehonathan, Ian}
POY lens was moved to infront of
the POY steering mirror to make the POU beam |
|
|
16799
|
Thu Apr 21 18:18:42 2022 |
yehonathan | Update | BHD | POX Alignment | {Yehonathan, Paco}
BS, ITMX and ETMX were aligned
to get flashing in the X arm. |
|
|
14193
|
Wed Sep 5 10:59:23 2018 |
wgautam | Update | CDS | CDS status update | Rolf came by today morning. For now, we've
restarted the FE machine and the expansion
chassis (note that the correct order in which |
|
|
6
|
Sat Oct 20 11:54:13 2007 |
waldman | Other | OMC | OMC and OMC-SUS work | [Rich, Chub, Pinkesh, Chris, Sam]
Friday the 18th was a busy day in OMC land. |
|
|
14
|
Thu Oct 25 17:52:45 2007 |
waldman | Other | OMC | OMCs with QPDs | [Rich, Chub, Pinkesh, Sam]
Yesterday we got the QPD, OTAS, and PZT cabling |
|
|
16
|
Thu Oct 25 23:35:36 2007 |
waldman | Other | OMC | Hang the OMC! | [Pinkesh, Sam]
We tried, convicted and hung the OMC today. |
|
|
19
|
Fri Oct 26 17:34:43 2007 |
waldman | Other | OMC | OMC + earthquake stops |
[Chub, chris, Pinkesh, Sam]
|
|
|
20
|
Fri Oct 26 21:48:40 2007 |
waldman | Configuration | OMC | Fiber to 056 | I set up a 700 mW NPRO in Rana's lab and launched
it onto a 50m fiber. I got a few mW onto
the fiber, enough to see with a card before |
|
|
21
|
Sat Oct 27 19:00:44 2007 |
waldman | Configuration | OMC | Hanging, locked OMC with REFL extracted. | I got the OMC locked to the fiber output today.
It was much more difficult than I expected
and I spent about 30 minutes or so flailing |
|
|
25
|
Mon Oct 29 11:07:22 2007 |
waldman | Software Installation | OMC | Software install on OMS | [Alex, Sam]
We spent a little time this morning working |
|
|
26
|
Mon Oct 29 12:20:15 2007 |
waldman | Configuration | OMC | Changed OMS filters | I changed the OMS configuration so that some
of the OMC-SUS LED channels go to a breakout
box so that we can input the PDH error signal. |
|
|
27
|
Mon Oct 29 23:10:05 2007 |
waldman | Configuration | OMC | Lost in DAQspace | [Pinkesh, Sam]
In setting up a Digital based control of |
|
|
37
|
Wed Oct 31 09:45:28 2007 |
waldman | Other | OMC | Resolution to DAQland saga | [Jay, Sam]
We did a rough accounting for the linear |
|
|
42
|
Wed Oct 31 23:55:17 2007 |
waldman | Other | OMC | QPD tests | The 4 QPDs for the OMC have been installed
in the 056 at the test setup. All 4 QPDs
work and have medm screens located under |
|
|
43
|
Thu Nov 1 01:28:04 2007 |
waldman | Other | OMC | First digital lock of OMC | [Pinkesh, Sam]
We locked a fiber based NPRO to the suspended |
|
|
58
|
Fri Nov 2 12:18:47 2007 |
waldman | Summary | OMC | Locked OMC with DCPD | [Rich, Sam]
We locked the OMC and look at the signal |
|
|
59
|
Sat Nov 3 16:20:43 2007 |
waldman | Summary | OMC | A good day's work |
I followed up yesterday's test of the PZT
with a whole mess of characterizations of |
6x |
|
60
|
Sun Nov 4 23:22:50 2007 |
waldman | Update | OMC | OMC PZT and driver response functions | I wrote a big long elog and then my browser
hung up, so you get a less detailed entry.
I used Pinkesh's calibration of the PZT |
7x |
|
63
|
Mon Nov 5 14:44:39 2007 |
waldman | Update | OMC | PZT response functions and De-whitening | The PZT has two control paths: a DC coupled
path with gain of 20, range of 0 to 300
V, and a pair of 1:10 whitening filters, |
|
|
79
|
Wed Nov 7 14:01:31 2007 |
waldman | Omnistructure | OMC | Frequency and Intensity noise | One of the biggest problems I had using the
PZT to lock was excessive noise. I did a
little noise hunting and found that the problem |
|
|
86
|
Fri Nov 9 00:01:24 2007 |
waldman | Omnistructure | OMC | OMC mechanical resonances (Tap tap tappy tap) | [Pinkesh, Aidan, Sam]
We did a tap-tap-tappy-tap test of the OMC |
7x |
|
179
|
Fri Dec 7 11:33:24 2007 |
waldman | Omnistructure | OMC | PZT wiring | The 2 pin LEMO connector has got an unmarked
pin and a pin marked by a white half-circle.
The unmarked pin is connected to the side |
|
|
206
|
Thu Dec 20 19:05:34 2007 |
waldman | HowTo | OMC | HOWTO build front ends | For instance, to build the TPT front end
code.
|
|
|
207
|
Thu Dec 20 19:10:03 2007 |
waldman | Update | OMC | Stressful reattachment of heater | Photos may follow eventually, but for now
here's the rundown. I scraped the heater
clean of the thermal epoxy using a clean |
|
|
12169
|
Fri Jun 10 18:16:59 2016 |
varun | Update | PSL | Realignment of pre mode cleaner | The mode cleaner was misaligned probably
due to the earthquake (the drop in the
MC transmitted value slightly after utc 7:38:52 |
|
|
12173
|
Mon Jun 13 20:01:30 2016 |
varun | Update | CDS | DAFI GUI update | Summary: I am implementing
digital audio filtering on various interferometer
signals in order to listen to the processed |
|
|
12180
|
Tue Jun 14 20:10:19 2016 |
varun | Update | CDS | DAFI GUI update | I have added Enable buttons for each of
the DSP blocks, and labels for the matrix
elements. The input matrix takes inputs from |
|
|
12185
|
Wed Jun 15 22:12:55 2016 |
varun | Update | CDS | DAFI update: stereo output | I wish to have stereo audio output for
the DAF module. Hence, there needs to be
a second output from the DAF. I added this |
|
|
12207
|
Tue Jun 21 11:26:42 2016 |
varun | Frogs | CDS | medm command not working | "medm: command not
found" error when run through |
|
|
12211
|
Wed Jun 22 10:15:45 2016 |
varun | Update | CDS | DAFI update: stereo output | I have updated the DAFI with the following
changes:
1) Separated both the channels |
|
|
12215
|
Mon Jun 27 15:12:09 2016 |
varun | Update | CDS | DAFI update: stereo output | Using an RC to BNC connector from the inner
drawer, I have added a second output cable
going from the output Fibox in the control |
|
|
12242
|
Tue Jul 5 14:12:56 2016 |
varun | Update | Electronics | Antialiasing Filter Update | I am trying to design an antialiasing filter,
which also has two switchable whitening stages.
I have designed a first version of a PCB |
|
|
12266
|
Thu Jul 7 12:44:52 2016 |
varun | Update | CDS | DAFI update | Attached is a diagram, showing the entire
(planned) signal flow of the DAF model. Some
thoughts on the implementation after discussion |
|
|
12282
|
Fri Jul 8 22:26:03 2016 |
varun | Update | CDS | DAFI Update: Changes in LSC model | I have added the control signals DARM_CTRL,
MICH_CTRL, PRCL_CTRL, SRCL_CTRL, CARM_CTRL,
XARM_CTRL, YARM_CTRL, MC_CTRL to the |
|
|
12287
|
Sun Jul 10 20:08:44 2016 |
varun | Update | CDS | DAFI Update: Changes in LSC and PEM models | I have added the PEM signals mentioned
in the previous elog as DAF inputs through
PCIE IPC, and compiled and restarted the |
|
|
12303
|
Thu Jul 14 23:38:59 2016 |
varun | Update | CDS | c1lsc FE unresponsive | Today, at around 10:30, c1lsc machine froze
and stopped responding to ping and ssh after
I compiled and restarted c1daf. I think it |
|
|
12304
|
Fri Jul 15 12:21:28 2016 |
varun | Update | CDS | c1lsc FE unresponsive | c1lsc is up and running, Eric did a manual
reboot today.
|
|
|
12307
|
Sat Jul 16 00:30:42 2016 |
varun | Update | CDS | DAFI update: Frequency warping | c1lsc unresponsive | Summary: I am trying to
implement frequency warping/pitch shifting
on the real time FE. Here is a description |
|