| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
7762
|
Thu Nov 29 02:43:48 2012 |
Ayaka | Update | PEM | Decreased RMS in Seismometers |
|
|
|
7778
|
Mon Dec 3 17:04:12 2012 |
Ayaka | Update | PSL | PMC calibration for MC_F calibration | In order to calibrate MC_F signal, I need
to know the calibration value from thorlab's
PZT driver to laser frequency. |
|
|
7784
|
Tue Dec 4 18:53:50 2012 |
Ayaka | Update | Alignment | BS chamber | BS chamber seemed to be kicked again around
10:00 am today.
I moved PZT mainly in YAW and locked |
|
|
7789
|
Wed Dec 5 01:06:22 2012 |
Ayaka | Update | WienerFiltering | The microphones and the speaker on the AP table | In order to see the acoustic coupling
on arm signals, I set 6 microphones and the
speaker on the AP table. The microphones |
|
|
7799
|
Fri Dec 7 20:34:31 2012 |
Ayaka | Update | SUS | oplevs as acoustic and seismic noise couplers at high frequencies | I will
just leave the picture of spectrum that shows
the injected acoustic sound effects due to |
|
|
7808
|
Tue Dec 11 09:31:47 2012 |
Ayaka | Update | LSC | Oplev update for improving sensitivity | Motivation
We observed that oplev servos affect |
7x |
|
7809
|
Tue Dec 11 10:09:04 2012 |
Ayaka | HowTo | PEM | cables needs care |
|
|
|
7812
|
Tue Dec 11 21:53:37 2012 |
Ayaka | Update | LSC | Oplev update for improving sensitivity | [Rana, Ayaka]
The BS oplev pitch feedback came
back. |
|
|
7814
|
Wed Dec 12 11:49:05 2012 |
Ayaka | Update | LSC | Acoustic noise in POX and AS error signal | [Koji, Ayaka]
Last night, I injected acoustic noise
at POX table and AS table with oplev controls |
|
|
7823
|
Thu Dec 13 17:24:53 2012 |
Ayaka | Update | PSL | PMC calibration for MC_F calibration | I calibrated MC_F signal into Hz/rtHz
unit using the transfer function from
MC_F to PMC feedback signal. |
6x |
|
7824
|
Thu Dec 13 18:06:59 2012 |
Ayaka | Update | WienerFiltering | New microphone mounts | Yesterday, I made new mounts for
microphones.
|
|
|
7829
|
Fri Dec 14 03:32:51 2012 |
Ayaka | Update | LSC | High frequency noise in AS signal | I calibrated the AS error signal into the
displacement of the YARM cavity in the same
way as I did before (elog). |
|
|
7830
|
Fri Dec 14 03:49:02 2012 |
Ayaka | Update | General | Earthquake | There was an earthquake around 2:30 am.
Now all the mirrors except SRM are damped.
|
|
|
7833
|
Fri Dec 14 10:09:30 2012 |
Ayaka | Update | LSC | High frequency noise in AS signal |
|
|
|
7835
|
Fri Dec 14 16:35:38 2012 |
Ayaka | Update | LSC | High frequency sensitivity improved | Since I found that the the AS sensitivity
seems to be limited by circuit noise, I inserted
a RF amplifier just after the AS RF output. |
|
|
12621
|
Wed Nov 16 17:07:12 2016 |
Ashley | Update | General | Preliminary Microphone Data | I am currently looking at the acoustic
noise around both arms to see if there are
any frequencies from machinery around the |
|
|
12738
|
Thu Jan 19 10:21:54 2017 |
Ashley | Update | General | Preliminary Microphone Data | Brief Summary:
I am currently looking at the acoustic
noise around both arms to see if there are |
|
|
12826
|
Mon Feb 13 17:39:45 2017 |
Ashley | Update | General | Preliminary Microphone Data Update |
Problems that have occurred since
my last post: All of the sudden, I was getting
very strange data that was very quiet and |
|
|
13788
|
Wed Apr 25 17:44:39 2018 |
Arnold | Update | PEM | PEM Anti-Alias wiring |
|
|
|
13703
|
Mon Mar 26 10:15:20 2018 |
Arijit | Update | IOO | PMC and IMC re-locked | [Gautam, Arijit]
PMC and IMC re-aligned and re-locked.
Both cavities are staying locked. Arm cavities |
|
|
14062
|
Fri Jul 13 00:15:13 2018 |
Annalisa, Terra | Configuration | AUX | Y arm cavity scan | [Annalisa, Terra, Koji, Gautam]
Summary: We
find a configuration for arm scans which |
|
|
14078
|
Tue Jul 17 17:37:46 2018 |
Annalisa, Terra | Configuration | Thermal Compensation | Heaters installation | Summary
We
installed two heaters setup on the ETMY bench
in order to try inducing some radius of curvature |
6x |
|
14086
|
Thu Jul 19 04:44:09 2018 |
Annalisa, Terra | Summary | Thermal Compensation | frequency shift observed with heating! | Annalisa, Gautum, Koji, Terra
Summary: with
the reflector setup, we measured a frequency |
|
|
8801
|
Thu Jul 4 01:09:33 2013 |
Annalisa, Koji | Update | LSC | PRMI locked with REFL165 | Summary:
-
The new REFL165 PD was installed on the AP |
|
|
8183
|
Wed Feb 27 14:39:59 2013 |
Annalisa | Update | LSC | Fibre laid for RFPD audio | [Annalisa, Jenne, Rana, Steve]
We installed the fibres on cable
trays the 1Y2 and the Control Room. |
|
|
8190
|
Wed Feb 27 19:27:29 2013 |
Annalisa | HowTo | COMSOL Tips | Mirror support Eigenfrequency | I studied the eigenfrequencies of
a mirror support using COMSOL.
|
|
|
8226
|
Mon Mar 4 20:03:42 2013 |
Annalisa | HowTo | COMSOL Tips | Study of mirror mount eigenfrequencies | I studied the eigenfrequencies of
a mirror mount designed with COMSOL.
I imposed fixed constraints for the |
|
|
8244
|
Wed Mar 6 18:51:07 2013 |
Annalisa | Update | Alignment | Auxiliary laser installed for FSR and TMS measurement of the PRC | We want to measure the g-factor of the
PRC using the beat note of the main laser
with an auxiliary NPRO laser. |
|
|
8257
|
Fri Mar 8 12:57:57 2013 |
Annalisa | Update | ABSL | BS installed on ITMY table | Sendhil and I installed the S polarized
BS on the ITMY table to steer the NPRO beam
through the AR wedge and align it to the |
|
|
8303
|
Mon Mar 18 12:02:12 2013 |
Annalisa | Configuration | ABSL | ABSL setup for g-factor measurement of PRC | Motivations
The ABSL
technique has been already used in the past
to measure the |
|
|
8305
|
Mon Mar 18 12:35:29 2013 |
Annalisa | Bureaucracy | Auxiliary locking | Yend table upgrade - go fetch NPRO from ATF |
|
|
|
8308
|
Mon Mar 18 20:13:18 2013 |
Annalisa | Bureaucracy | Auxiliary locking | Yend table upgrade - go fetch NPRO from ATF |
|
|
|
8313
|
Tue Mar 19 20:24:56 2013 |
Annalisa | Update | Auxiliary locking | Auxiliary laser on PSL table | I moved the auxiliary laser from
the ITMY table to the PSL table and installed
all the optics (mirrors and lenses) to steer |
|
|
8322
|
Thu Mar 21 09:53:46 2013 |
Annalisa | Update | Locking | Finding the beat note | Yesterday I tried to find the beat
note between the main PSL and the auxiliary
NPRO, but I didn't :( |
|
|
8327
|
Thu Mar 21 13:11:42 2013 |
Annalisa | Update | Locking | Finding the beat note |
|
|
|
8329
|
Thu Mar 21 14:02:45 2013 |
Annalisa | Update | Locking | incident angles |
|
|
|
8333
|
Fri Mar 22 23:23:38 2013 |
Annalisa | Update | Locking | Beat note still missing | [Annalisa, Manasa, Koji]
I updated the setup for the beat
note. The main reason is that I needed to |
|
|
8345
|
Mon Mar 25 23:20:57 2013 |
Annalisa | Summary | Auxiliary locking | Beat note found! | [Annalisa, Manasa]
The beat note between the main PSL
and the auxiliarly NPRO has been found! |
|
|
8361
|
Wed Mar 27 21:53:21 2013 |
Annalisa | Update | ABSL | Beat note of ATF auxiliary laser | After measuring the beat note, the "Alberto"
NPRO auxiliary laser has been moved from
the PSL table to the POY table. Its beam |
|
|
8368
|
Thu Mar 28 19:32:22 2013 |
Annalisa | Summary | Auxiliary locking | Beat note found! |
I plot the variation of the
beat note frequency as a function of "Alberto" |
|
|
8369
|
Thu Mar 28 23:00:30 2013 |
Annalisa | Update | ABSL | Beat note of ATF auxiliary laser found |
The beat note for the ATF lab laser
has been found. |
|
|
8370
|
Thu Mar 28 23:06:48 2013 |
Annalisa | Update | Auxiliary locking | "Alberto" NPRO laser again on PSL table | "Alberto"NPRO laser has
been moved again on PSL table in order to
make a measurement of the beat note varying |
|
|
8386
|
Mon Apr 1 23:22:17 2013 |
Annalisa | Update | Auxiliary locking | Beat note between "Alberto" NPRO laser and PSL laser | I measured the beat note between the "Alberto"
NPRO laser and the PSL varying the PSL temperature
and find the matching NPRO temperature that |
|
|
8396
|
Tue Apr 2 22:39:17 2013 |
Annalisa | Update | Auxiliary locking | Beat note between "Alberto" NPRO laser and PSL laser |
The beat note between the PSL
laser and the "Alberto" NPRO laser |
|
|
8437
|
Wed Apr 10 15:49:22 2013 |
Annalisa | Configuration | COMSOL Tips | Yend table eigenfrequency simulation with COMSOL | I made a Simulation with COMSOL for
the Yend table. Mainly, I tried to see how
the lower eigenmode changes with the number |
|
|
8495
|
Fri Apr 26 10:50:07 2013 |
Annalisa | Update | ABSL | ATF laser on PSL | The ATF NPRO auxiliary laser has been moved
on the PSL table. All the optics for beat
note measurement are in place and alignment |
|
|
8561
|
Fri May 10 20:05:21 2013 |
Annalisa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress | I rotated some mounts along
the green beam path, and I started aligning
the beam again. |
|
|
8565
|
Mon May 13 21:35:55 2013 |
Annalisa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress | Yend
table - Current status |
|
|
8576
|
Tue May 14 21:03:15 2013 |
Annalisa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress |
GREEN
The new lenses arrived, and I put |
|
|
8584
|
Wed May 15 21:27:39 2013 |
Annalisa | Update | 40m Upgrading | Endtable upgrade for auxiliary green laser : progress |
GREEN
I still have problems in maximizing |
|