| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6282
|
Wed Feb 15 11:34:01 2012 |
steve | Update | | under the shouth end optical table | I added an U channel based bottom shelf
at the south end today. |
|
|
6571
|
Thu Apr 26 09:22:17 2012 |
steve | Update | | under the east end optical table |
|
|
|
6878
|
Wed Jun 27 11:27:49 2012 |
Liz | Update | | First Week Update! | This week, the
other SURF students and I got
|
|
|
7164
|
Mon Aug 13 19:29:10 2012 |
Manasa | Summary | | Ringdown measurements | I tried to make ringdown measurements at
the IMC using the DC falling edge as the
trigger. Input to the MC was switched off |
|
|
7256
|
Thu Aug 23 12:17:39 2012 |
Manasa | Update | | IMC Ringdown | The ringdown measurements are in progress.
But it seems that the MC mirrors are getting
kicked everytime the cavity is unlocked by |
|
|
7257
|
Thu Aug 23 15:35:33 2012 |
rana | Update | | IMC Ringdown |
It is HIGHLY unlikely
that the IMC mirrors are having any effect |
|
|
7260
|
Thu Aug 23 17:51:25 2012 |
Manasa | Update | | IMC Ringdown |
|
|
|
7317
|
Thu Aug 30 12:01:27 2012 |
janosch, Manasa,Steve | Update | | ETMX | We have done some work at ETMX today. We
installed the baffle and placed two
mirrors on the table. |
|
|
7319
|
Thu Aug 30 17:03:32 2012 |
janosch, Manasa, Steve | Update | | ETMX | The baffle has been moved away from ETMX
towards the edge of the table (in fact, it
is a little beyond the edge). It is also |
|
|
7326
|
Fri Aug 31 10:16:02 2012 |
janosch, Steve | Update | | ETMX, scattering preps | The alignment of the pick-off mirror near
ETMX is done. Everything turned out to be
easy once we realized that there is no sense getting |
|
|
7352
|
Thu Sep 6 17:11:40 2012 |
janosch, Manasa, Steve | Update | | pick-off and baffle at ETMY | We have installed the pick-off mirror at
the ETMY table for the small-angle
scattering measurement on ITMY. As we |
|
|
7356
|
Fri Sep 7 00:08:10 2012 |
janosch | Metaphysics | | baffle clipping loss | With a curvature radius of about 57m
for the ETMs, flat ITMs at the beam waist,
and using 39m for the arm lengths, one finds |
|
|
7363
|
Fri Sep 7 15:58:29 2012 |
Rijuparna Chakraborty | Update | | cavitymode scan | IMC transmission photodiode has been
aligned. |
|
|
7366
|
Fri Sep 7 17:37:16 2012 |
Jenne | Update | | cavitymode scan |
|
|
|
7368
|
Sat Sep 8 00:15:57 2012 |
Rijuparna Chakraborty | Update | | cavitymode scan |
|
|
|
7376
|
Wed Sep 12 19:26:08 2012 |
Rijuparna Chakraborty | Update | | cavitymode scan | Summary: Recorded the presence of
higher order modes in IMC
What I did: Misaligned the flat mirror |
7x |
|
7486
|
Thu Oct 4 23:01:49 2012 |
Rijuparna | Configuration | | cavitymode scan | Here I am attaching the schematic
diagram of the experimental set-up for IMC
cavitymode scanning. A 30- 45MHz scanning |
|
|
7519
|
Wed Oct 10 15:31:59 2012 |
Rijuparna | Update | | cavitymode scan | Rijuparna, Jenne
Today I checked the optical lay-out
in MC REFL board of the |
|
|
7520
|
Wed Oct 10 15:46:23 2012 |
Jenne | Update | | cavitymode scan |
|
|
|
7537
|
Fri Oct 12 15:31:03 2012 |
Rijuparna | Configuration | | cavitymode scan | Rijuparna, Manasa
Today I have checked the optical
layout of the MC transmission RFPD table |
|
|
7612
|
Wed Oct 24 19:55:06 2012 |
jamie | Update | | my assesment of the folding mirror (passive tip-tilt) situation | We removed all the folding mirrors ({P,S}R{2,3})
from the IFO and took them into the bake
lab clean room. The idea was that at |
|
|
7613
|
Wed Oct 24 20:09:41 2012 |
jamie | Update | | installing the new dirchoic mirros in PR3/SR3 | When installing the dichroics we need to
pay attention to the wedge angle. I
didn't, so the ghost beam is currently point |
|
|
7617
|
Thu Oct 25 02:10:22 2012 |
Koji | Update | | my assesment of the folding mirror (passive tip-tilt) situation | The thinner wire has a history that it
did not improve the hysteresis (ask Jenne).
Nevertheless, it's worth to try. |
|
|
7618
|
Thu Oct 25 06:49:49 2012 |
Koji | Update | | my assesment of the folding mirror (passive tip-tilt) situation |
|
|
|
7747
|
Mon Nov 26 19:27:59 2012 |
Riju | HowTo | | Testing AG4395A+GPIB | Riju, Jenne
We have checked the transfer function
of a bandpass filter using AG4395A network |
|
|
7756
|
Tue Nov 27 19:06:16 2012 |
Riju | Update | | Testing AG4395A+GPIB | I ve tested another bandpass filter
today with similar set-up. This time I took
the data with corrected reference level. |
|
|
7794
|
Wed Dec 5 17:38:41 2012 |
Riju | HowTo | | Photodiode transimpedance | I have started making the circuit to measure
the transimpedance for the photodiode PDA10CF
using Jenne's laser. I will continue it tomorrow. |
|
|
7817
|
Wed Dec 12 17:26:47 2012 |
Riju | Update | | Testing AG4395A+GPIB | I repeated my experiment to get noise level.
To get that I disconnected the bandpass filter
SBP-10.7 from channel A of network |
|
|
7834
|
Fri Dec 14 14:40:31 2012 |
Riju | Update | | Photodiode transimpedance | Photodiode PDA10CF was under test. The
RF out signal of AG4395A had been divided
by splitter with one output of the splitter |
|
|
7854
|
Tue Dec 18 16:44:00 2012 |
riju | Update | | Photodiode transimpedance | Today I measured the dark current of the
PDA10CF. The output of the PD was connected
to the A channel of the network analyzer, |
|
|
7870
|
Fri Dec 21 19:49:39 2012 |
Riju | Update | | Photodiode transimpedance | I have repeated the transimpedance measurement
of PDA10CF. Also made the dark current noise
measurement by connecting the PDA10CF output |
|
|
7874
|
Thu Jan 3 20:34:43 2013 |
Riju | Update | | Photodiode transimpedance | Today I have measured the transimpedance
and dark-noise of the MC-REFL PD.
For transimpedance measurement I |
|
|
7876
|
Fri Jan 4 15:11:28 2013 |
Jenne | Update | | TT | [Jenne, Koji]
D - UL
B - UR |
|
|
7880
|
Tue Jan 8 14:01:21 2013 |
Riju | Update | | Photodiode transimpedance | Here I upload the plots corresponding
to my last day's measurements.
|
|
|
7887
|
Wed Jan 9 19:32:24 2013 |
Riju | Update | | Photodiode transimpedance | Summary:
Today I have tested the MC transmission-end
RF photodiode PDA255 for transimpedance and |
|
|
7898
|
Mon Jan 14 15:15:04 2013 |
Jenne | Update | | TT |
[Manasa, Jenne]
First plug in only one of the quadrupus |
|
|
7899
|
Mon Jan 14 19:56:48 2013 |
Manasa | Update | | TT |
[Manasa, Jenne]
The motion of the magnets (~1.5mm |
|
|
7907
|
Wed Jan 16 18:58:08 2013 |
Riju | Update | | Photodiode transimpedance | Today I have taken the reading for shot
noise intercept current for the PDA255 -
MC transmission RF PD. To do that I have |
|
|
7926
|
Tue Jan 22 17:29:29 2013 |
Riju | Update | | Photodiode transimpedance | Riju
Summary: I am stuck with the
measurement of shot-noise-intercept-current |
|
|
7927
|
Tue Jan 22 19:51:52 2013 |
Koji | Update | | Photodiode transimpedance | - The data should be plotted in a log-log
scale.
- The data points were only taken |
|
|
7929
|
Wed Jan 23 11:43:19 2013 |
Riju | Update | | Photodiode transimpedance |
|
|
|
7933
|
Wed Jan 23 20:27:05 2013 |
Riju | Update | | Photodiode transimpedance | Today I have repeated the expt for shot
noise intercept current. Koji found that
the Spectrum analyzer is going to saturation, |
|
|
7946
|
Mon Jan 28 17:59:02 2013 |
Riju | Update | | Photodiode transimpedance | Summary: Measurement and plot of
shot-noise-intercept-current for PDA255. |
|
|
7956
|
Tue Jan 29 18:40:20 2013 |
Riju | Update | | Photodiode transimpedance | Today I have taken data for shot noise
intercept current for PDA10CF. I will process
the data and report. |
|
|
7972
|
Thu Jan 31 12:44:42 2013 |
Riju | Update | | Photodiode transimpedance | Today I collected the data for shot noise
intercept current for MC REFL PD. I didn't
get many data points at higher DC voltage |
|
|
7977
|
Thu Jan 31 15:56:38 2013 |
Riju | Update | | Photodiode transimpedance | Summary: Measurement |
|
|
7984
|
Fri Feb 1 14:47:17 2013 |
Riju | Update | | Photodiode transimpedance | Summary: |
|
|
8027
|
Thu Feb 7 19:24:57 2013 |
Riju | Update | | Photodiode transimpedance | Summary: |
|
|
8067
|
Tue Feb 12 17:26:31 2013 |
Chloe | Update | | QPD circuitry to test mount vibrations | I spent awhile today reading about
op-amps and understanding what would be necessary
to design a circuit which would directly |
|
|
8090
|
Fri Feb 15 17:11:13 2013 |
Chloe | Update | | QPD circuit pictures | I took better pictures of the circuits
of the QPD and spent a couple of hours with
a multimeter trying to figure out how all |
|