| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
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 |
|
|
12309
|
Mon Jul 18 18:44:52 2016 |
varun | Update | CDS | c1lsc FE recovered | c1lsc FE is up and running.
Details:
2) The machine was manually rebooted. |
|
|
12319
|
Thu Jul 21 12:03:35 2016 |
varun | Update | CDS | DAFI update: Humming noise in DAFI output |
Summary: There |
|
|
12320
|
Thu Jul 21 14:27:24 2016 |
varun | Update | CDS | DAFI Update: Arbitrary Math block | Summary: I have added
an arbitrary math block to the DAFI model,
which takes two inputs, say X and Y, and |
|
|
12321
|
Thu Jul 21 15:03:13 2016 |
varun | Update | CDS | DAFI Update | 1) I have added the status summary of the
DAFI block to the main FE status overview
screen in the c1lsc cloumn. (attachment 1) |
|
|
12324
|
Thu Jul 21 22:02:35 2016 |
varun | Update | CDS | DAFI update: Frequency warping | The code for frequency warping contained
a "printf()" command, which had
caused the system to crash in one another |
|
|
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 |
|
|
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 |
|
|
14816
|
Mon Jul 29 19:08:55 2019 |
yehonathan | Update | Loss Measurement | Reviving loss measurement by reflection | 1. X arm is totally misaligned in order
to measure the Y arm loss using the reflection
method. Each measurement round consists of |
|
|
14827
|
Mon Aug 5 14:47:36 2019 |
yehonathan | Update | Loss Measurement | | Summary:
I analyze the 100 reps loss measurement
of the Y arm using the AnalyzeLossData.ipynb |
|
|
Draft
|
Mon Aug 5 16:28:41 2019 |
yehonathan | Update | Loss Measurement | what is going on with the loss measurements ? | We hypothesize that the systematic error
in the loss measurement can come from the
fact that the requirement on the alignment |
|
|
14830
|
Mon Aug 5 17:36:04 2019 |
yehonathan | Update | Loss Measurement | | We check for unexpected drifts in the PD
reading (clipping and such). We put a pickoff
mirror where the PD used to be and place |
|
|
14831
|
Tue Aug 6 14:12:02 2019 |
yehonathan | Update | Computers | making rossa great again | cdsutils is not working on rossa.
Import cdsutils produces this error:
In [2]: import cdsutils |
|
|
14834
|
Tue Aug 6 16:44:50 2019 |
yehonathan | Update | Loss Measurement | | I grab 2 hours of the PD measurements using
dlData_simple.ipynb in the misaligned state.
I get pretty much a normally distributed |
|
|
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 |
|