| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
14482
|
Sun Mar 17 21:06:17 2019 |
Anjali | Update | ALS | Amplifier characterisation | The goal was to characterise the new amplifier
(AP1053). For a practice, I did the characterisation
of the old amplifier.This test is similar |
|
|
14504
|
Sun Mar 31 18:39:45 2019 |
Anjali | Update | AUX | AUX laser fiber moved from AS table to PSL table |
Attachment #1 shows the schematic
of the experimental setup for the frequency
noise measurement of 1 um laser source. |
|
|
14518
|
Fri Apr 5 11:40:57 2019 |
Anjali | Update | Frequency noise measurement | Frequency noise measurement of 1 micron source |
Attachment #1 shows the present
experimental setup. The photodiode is now
replaced with PDA255. The farther end of |
|
|
14520
|
Sat Apr 6 02:07:40 2019 |
Anjali | Update | Frequency noise measurement | Frequency noise measurement of 1 micron source |
The alignment of the output beam
from the delayed path of MZI to the photodetector
was disturbed when we did the polarisation |
|
|
14529
|
Wed Apr 10 00:33:09 2019 |
Anjali | Update | Frequency noise measurement | Frequency noise measurement of 1 micron source |
Attachement #1 shows the input
(ch4-green) modulation frequency and
the photodiode output (ch1-yellow) when the |
|
|
14534
|
Thu Apr 11 09:05:06 2019 |
Anjali | Update | IOO | Spooled fiber |
Attchment #1,2,3 and 4 shows the
results with frequency modulation of 32 Hz,
140 Hz , 300 Hz and without frequency modulation. |
|
|
14540
|
Fri Apr 12 01:22:27 2019 |
Anjali | Update | Frequency noise measurement | Frequency noise measurement of 1 micron source | The alignement was disturbed after the
replcement of the beam splitter. We tried
to get the alignment back . But we are |
|
|
14571
|
Thu Apr 25 03:32:25 2019 |
Anjali | Update | Frequency noise measurement | MZ interferometer ---> DAQ |
Attachment #1 shows the time domain
output from this measurement. The contrast
between the maximum and minimum is better |
|
|
14576
|
Thu Apr 25 15:47:54 2019 |
Anjali | Update | Frequency noise measurement | Homodyne v Heterodyne | My understanding is that the main advantage
in going to the heterodyne scheme is that
we can extract the frequecy noise information |
|
|
14578
|
Thu Apr 25 18:14:42 2019 |
Anjali | Update | PSL | Door broken | It is noticed that one of the doors (door
# 2 ) of the PSL table is broken. Attachement
#1 shows the image |
|
|
14579
|
Fri Apr 26 12:10:08 2019 |
Anjali | Update | Frequency noise measurement | Frequency noise measurement of 1 micron source | From the earlier results with homodyne
measurement,the Vmax and Vmin
values observed were comparable with |
|
|
14586
|
Tue Apr 30 17:27:35 2019 |
Anjali | Update | Frequency noise measurement | Frequency noise measurement of 1 micron source | We repeated the homodyne measurement to
check whether we are measuring the actual
frequency noise of the laser. The idea was |
|
|
14616
|
Fri May 17 10:12:07 2019 |
Anjali | Summary | Equipment loan | Borrowed component | I borrowed one Marconi (2023 B) from
40 m lab to QIL lab. |
|
|
13686
|
Mon Mar 19 07:37:00 2018 |
Angelina Pan | Summary | | Proposed QPD Optical Arrangement | I am currently working on an optical arrangement
consisting of a QPD that measures the fluctuations
of an incoming HeNe laser beam that |
|
|
13699
|
Thu Mar 22 17:47:16 2018 |
Angelina Pan | Summary | | Proposed QPD Optical Arrangement | |
|
|
64
|
Mon Nov 5 22:24:38 2007 |
Andrey, Steve | Omnistructure | VAC | Pumping down goes smoothly |
We (Steve and Andrey) started pumping down
at 3.25PM today. At 9 PM we turned off the |
|
|
489
|
Tue May 20 18:33:01 2008 |
Andrey, John | Configuration | IOO | Mode Cleaner is locked again |
It was noticed by Mr.Adhikari earlier today
that the MC became unlocked at about 11AM.
|
|
|
11
|
Wed Oct 24 01:43:32 2007 |
Andrey Rodionov | Other | General | PDF-file -> Will report about first results for XARM during Wednesday meeting |
Here is the pdf-file with some graphs showing
first results for XARM optimization.
|
|
|
38
|
Wed Oct 31 10:31:23 2007 |
Andrey Rodionov | Routine | VAC | Venting is in progress |
We (Steve, David, Andrey) started venting
the vacuum system at 9.50AM Wednesday morning. |
|
|
41
|
Wed Oct 31 19:26:08 2007 |
Andrey Rodionov | Routine | General | Photographs of "Mode-Cleaner Entrance" |
Here are the pictures of "inside the chamber". |
9x |
|
46
|
Thu Nov 1 16:34:47 2007 |
Andrey Rodionov | Summary | Computers | Limitation on attachment size of E-LOG |
I discovered yesterday when I was attaching
photos that it is NOT possible to attach |
|
|
47
|
Thu Nov 1 16:42:48 2007 |
Andrey Rodionov | Summary | Environment | End of Daylight Saving Time this weekend | Useful information for everyone, as a friendly
reminder:
|
|
|
50
|
Thu Nov 1 19:53:02 2007 |
Andrey Rodionov | Bureaucracy | Photos | Tobin's picture | |
|
|
51
|
Thu Nov 1 19:53:34 2007 |
Andrey Rodionov | Bureaucracy | Photos | Robert's photo | |
|
|
52
|
Thu Nov 1 19:54:22 2007 |
Andrey Rodionov | Bureaucracy | Photos | Rana's photo | |
|
|
53
|
Thu Nov 1 19:55:03 2007 |
Andrey Rodionov | Bureaucracy | Photos | Andrey's photo | |
|
|
54
|
Thu Nov 1 19:55:59 2007 |
Andrey Rodionov | Bureaucracy | Photos | Andrey, Tobin, Robert - photo | |
|
|
55
|
Thu Nov 1 19:58:07 2007 |
Andrey Rodionov | Bureaucracy | Photos | Steve and Tobin's picture | |
|
|
56
|
Thu Nov 1 20:03:00 2007 |
Andrey Rodionov | Summary | Photos | Procedure "Drop and Drag" in pictures | |
|
|
75
|
Wed Nov 7 02:14:08 2007 |
Andrey | Bureaucracy | IOO | More information about MC2 ringdown | As Tobin wrote two hours ago, we (Andrey,
Tobin, Robert) made a series of ringdown
measurements for MC2
|
9x |
|
130
|
Wed Nov 28 12:43:53 2007 |
Andrey | Bureaucracy | | Here was the PDF-file of my presentation |
I was making a report with powerpoint presentation
during that Wednesday's 40-m meeting.
|
|
|
135
|
Wed Nov 28 19:02:41 2007 |
Andrey | Bureaucracy | WIKI-40M Update | New WIKI-40M page describing Matlab Suspension Modeling |
I created the WIKI-40m page with some details
about my today's talk on the 40-m lab meeting.
|
|
|
151
|
Fri Nov 30 20:17:26 2007 |
Andrey | Configuration | PEM | Accelerometers and alum.plates for them | All 6 accelerometers which were located near
the ITMX are turned off and disconnected
from the power cords.
|
|
|
168
|
Wed Dec 5 18:08:36 2007 |
Andrey | Update | ASC | Optical Lever laser for ETMX is installed |
A new laser with \lambda=633nm has been intalled
and the mirror adjusted so that the signal |
|
|
172
|
Wed Dec 5 23:19:03 2007 |
Andrey | Configuration | PEM | Accelerometers are turned on |
All accelerometers have been turned on, as
Alan asked during Wednesday meeting.
|
7x |
|
174
|
Thu Dec 6 15:22:42 2007 |
Andrey | Summary | Electronics | Pictures of the inside of He-Ne laser |
Steve gave me an old "dead" He-Ne laser that
long time ago was used for ETMX optical lever.
|
|
|
176
|
Thu Dec 6 19:19:47 2007 |
Andrey | Configuration | SUS | Suspension damping Gain was restored |
Suspension damping gain was disabled for
some reason (all the indicators in the most |
|
|
191
|
Thu Dec 13 23:56:02 2007 |
Andrey | Configuration | Computer Scripts / Programs | Overnight measurements |
[COLOR=blue]After my disease[/COLOR] (fever,
vomitting, nose problem, overall weakness) |
|
|
194
|
Mon Dec 17 23:42:08 2007 |
Andrey | Configuration | Computer Scripts / Programs | Overnight measurements in X-arm |
I am making overnight measurements this night
(from Monday to Tuesday) in XARM.
|
|
|
195
|
Tue Dec 18 00:51:39 2007 |
Andrey | Update | Computer Scripts / Programs | Results of Saturday overnight measurements |
As I indicated in the previous e-log entry
(#194), I made overnight measurements in |
11x |
|
198
|
Tue Dec 18 23:27:36 2007 |
Andrey | Configuration | Computer Scripts / Programs | New overnight measurements (this night from Tue to Wed) |
[COLOR=red]I am making overnight measurements
in XARM tonight.[/COLOR]
|
|
|
199
|
Tue Dec 18 23:41:00 2007 |
Andrey | Summary | Computer Scripts / Programs | Results of Mon/Tue overnight measurements (entry #194) |
Here I inform our community about the results
of the measurements of RMS values in XARM |
12x |
|
201
|
Wed Dec 19 15:51:00 2007 |
Andrey | Update | Computer Scripts / Programs | Daytime measurements in XARM and their results |
I was making measurements in XARM for three
different nights. All the results agree with |
11x |
|
202
|
Wed Dec 19 16:07:37 2007 |
Andrey | Summary | Computer Scripts / Programs | Results of overnight measurements Tue/Wed night (entry #198) |
As indicated in ELOG entry 198, I was making
[COLOR=red]overnight measurements during |
11x |
|
204
|
Wed Dec 19 20:28:27 2007 |
Andrey | DAQ | PEM | Names for all 6 accelerometers have been changed |
I eventually [COLOR=red]changed the names
for all 6 accelerometers[/COLOR] (see my |
|
|
205
|
Thu Dec 20 02:04:09 2007 |
Andrey | Update | Computer Scripts / Programs | New overnight measurements in XARM and their results |
I ran in the daytime/evening time my program,
changing the damping gains in suspension |
11x |
|
208
|
Thu Dec 20 21:57:34 2007 |
Andrey | Update | Computer Scripts / Programs | Measurements in XARM today |
Today at 2PM I started a program, it should
change the suspension gains in the interval |
|
|
209
|
Thu Dec 20 21:58:28 2007 |
Andrey | Summary | Computer Scripts / Programs | Results for 2 previous XARM measurements have been added |
I attached results (plots) of yesterday's
daytime and overnight measurements to the |
|
|
251
|
Mon Jan 21 23:30:03 2008 |
Andrey | Update | Computer Scripts / Programs | Matlab Program for Q-factor measurements (XARM -> ITMX and ETMX) |
Finally I overcame difficulties with adapting
Sonia's Matlab programs for XARM (Sonia's |
|
|
256
|
Wed Jan 23 12:31:36 2008 |
Andrey | Summary | SUS | Dissapointing Results of XARM optimization (PDF-file) |
I attach a PDF-file which summarizes briefly
the results of measurements/calculations |
|