ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
5464
|
Mon Sep 19 16:44:16 2011 |
Keiko | HowTo | LSC | Procedure for the demodulation board check | Here
I note the procedure for the demodulation
board orthogonality check for the future |
|
|
5463
|
Mon Sep 19 16:20:35 2011 |
kiwamu | Update | LSC | AS55 whitening gain decreased | The
gain of whitening filters on AS55 was decreased
from 21 dB to 0 dB for the Y arm locking. |
|
|
5462
|
Mon Sep 19 15:44:32 2011 |
Mirko | Update | LSC | RF modulation depth measurement | Earlier measurements of the modulation
index were less than optimal because we had
too low transmission through the cavity. |
|
|
5461
|
Mon Sep 19 15:41:48 2011 |
Jenne | Update | SUS | SUS diag stuff... just so I remember what I'm doing | The following optics were kicked:
ETMX
Mon Sep 19 15:39:44 PDT 2011 |
|
|
5460
|
Mon Sep 19 15:30:22 2011 |
Paul | Update | SUS | SRM oplev OSEM yaw calibration curve | I made the first measurements towards
oplev calibration measurements: calibrating
the oplevs in SRM YAW. The measurements seemed |
|
|
5459
|
Mon Sep 19 14:57:36 2011 |
kiwamu | Summary | IOO | IP POS is back | IPPOS is
back. A cable had been disconnected at the |
|
|
5458
|
Mon Sep 19 13:13:10 2011 |
Paul | Update | SUS | ITMY oplev available for use: SRM not for the moment | I've got the bench set up for the
measurement of the beam spot change with
DC SRM alignment offsets. The ITMY oplev |
|
|
5457
|
Mon Sep 19 12:23:30 2011 |
Paul | Update | SUS | ITMY and SRM oplev beam size reduced + next steps | I replaced the lenses that were there with
a -150mm lens followed by a +250mm lens.
This gave a significantly reduced beam size |
|
|
5456
|
Mon Sep 19 11:49:32 2011 |
Jenne | HowTo | General | Plan for this week: SUS inversion |
|
|
|
5455
|
Mon Sep 19 02:33:34 2011 |
kiwamu | HowTo | General | Plan for this week | GOAL1:
Stable lock of DRMI |
|
|
5454
|
Mon Sep 19 02:08:24 2011 |
kiwamu | Update | LSC | fixed POP clipping | Actually the clipping of POP wasn't in the
chamber but |
|
|
5453
|
Mon Sep 19 01:38:00 2011 |
kiwamu | Update | LSC | today's locking activity | [Anamaria / Kiwamu]
The incident |
|
|
5452
|
Mon Sep 19 01:07:32 2011 |
kiwamu | Update | SUS | f2a filters on ITMs and ETMX | The f2a filters
were installed on ITMs and ETMX. |
|
|
5451
|
Sun Sep 18 16:42:00 2011 |
Koji | Bureaucracy | Environment | Clean up your mess | Mess in the lab is increasing. Kiwamu and
I had to clean up some stuffs to continue
our work. |
|
|
5450
|
Sun Sep 18 15:57:00 2011 |
Koji | Update | IOO | The PZT driver engaged to PZT1 | [Koji Kiwamu]
The
pzt driver for PZT1 has been installed. |
|
|
5449
|
Sun Sep 18 15:34:09 2011 |
Koji | Update | Adaptive Filtering | Modifications to LSC, RFM models, added OAF model | [Koji Kiwamu]
This
modification of the LSC model made the rows |
|
|
5448
|
Sun Sep 18 14:08:52 2011 |
rana | Update | SUS | Calibration plan for the oplevs | We don't need a high quality calibration
for the optical levers. ~50% accuracy is
fine. |
|
|
5447
|
Sat Sep 17 14:04:45 2011 |
Koji | Update | IOO | PZT1 driver in place | The PZT driver is now in place. The actual PZTs are
not connected yet! |
|
|
5446
|
Sat Sep 17 02:07:10 2011 |
kiwamu | Update | SUS | ETMX input matrix : bad YAW-SIDE coupling | Excited all the optics. They will be automatically
back after 5 hours.
Sat Sep 17 02:02:07 PDT 2011 |
|
|
5445
|
Sat Sep 17 01:53:41 2011 |
Keiko | Update | LSC | POY and POP beams clipped | Keiko, Paul, Kiwamu
We found |
|
|
5444
|
Fri Sep 16 23:22:36 2011 |
kiwamu | Update | SUS | ETMX input matrix : bad YAW-SIDE coupling | With the
new input matrix, it looks like YAW and SIDE |
|
|
5443
|
Fri Sep 16 22:51:52 2011 |
Paul | Update | SUS | Calibration plan for the oplevs | In order to estimate the amount of
noise that the oplevs are injecting into
the GW channel, we first need to calibrate |
|
|
5442
|
Fri Sep 16 22:11:21 2011 |
Paul | Update | SUS | ITMY transfer function | First of all I moved the lenses on the
ITMY/SRM oplev path to get a smaller spot
size on the QPDs. I couldn't get the beam |
|
|
5441
|
Fri Sep 16 21:36:25 2011 |
Keiko | Update | LSC | POY11 and POY55 were added | New
channels, POP55 and POY11 are connected to
the rack and now available on the data system. |
|
|
5440
|
Fri Sep 16 21:26:12 2011 |
Keiko | Update | LSC | 3f demodulation board check | The demodulation
phases and gains for the all existing channels, |
|
|
5439
|
Fri Sep 16 17:46:13 2011 |
kiwamu | Update | SUS | Some screens fixed | The
bad medm screens have been fixed. There are
no blank fields and all the links are correct. |
|
|
5438
|
Fri Sep 16 17:16:15 2011 |
Jenne | Update | SUS | Input matrix diagonalization: Fail! | [Jenne, Anamaria]
I put the new matricies in from the
free swinging test for the: ITMX, ITMY, ETMX, |
|
|
5437
|
Fri Sep 16 17:09:07 2011 |
Paul | Update | SUS | ITMX oplev plan | I just drew a basic picture of how
the ITMX oplev path could be reworked to
minimise the number of optics in the path. |
|
|
5436
|
Fri Sep 16 16:34:54 2011 |
Paul | Update | SUS | ITMY SRM oplev telescope plan | I've calculated a suitable collimating
telescope for the ITMY/SRM oplev laser, based
on the specs for the soon-to-arrive 2mW laser |
|
|
5435
|
Fri Sep 16 16:29:05 2011 |
kiwamu | Update | SUS | f2a filters on SRM | New f2a filters
were installed on SRM. |
|
|
5434
|
Fri Sep 16 16:07:28 2011 |
steve | Update | SAFETY | visitors safety training | Paul, Mirko and Katrin visiting grad students
received the 40m basic safety training. |
|
|
5433
|
Fri Sep 16 14:43:43 2011 |
Suresh | Update | Computer Scripts / Programs | Changed c1ioo model and restarted fb | I had to change the c1ioo model and restart
the fb since the paths allowing us to select
various signals to demodulate using the lockins |
|
|
5432
|
Fri Sep 16 14:03:53 2011 |
Paul | Update | SUS | SRM oplev QPD noise measurement | I checked the dark and bright noise
of the SRM oplev QPD. The SRM QPD has a rather
high dark level for SUM of 478 counts. The |
|
|
5431
|
Fri Sep 16 11:15:12 2011 |
Koji | Update | IOO | PZT1 situation | [Koji Kiwamu]
- We have checked the situation of
the broken Piezo Jenna PZT (called PZT1) |
|
|
5430
|
Fri Sep 16 03:22:11 2011 |
Anamaria | Update | LSC | More Refl PDs Work and Attempt at DRMI | Kiwamu, Keiko, Anamaria
I started today with a different
input beam, so I had to realign the REFL |
|
|
5429
|
Fri Sep 16 00:08:30 2011 |
Paul | Update | SUS | ITMY Oplev QPD dark and bright noise spectra | I tried again at plotting the ITMY_QPD
noise spectra in for dark and bright operation.
Before we had the strange situation where |
|
|
5428
|
Thu Sep 15 22:31:44 2011 |
Manuel | Update | SUS | Summary screen | I changed some colors on the Summary
of Suspension Sensor using
my italian creativity. |
|
|
5427
|
Thu Sep 15 22:26:32 2011 |
Paul | Update | SUS | ITMY Oplev QPD dark noise PSD | I took a dark noise measurement for
the ITMY QPD, for comparison with measurements
of the oplev noise later on. Initially I |
|
|
5426
|
Thu Sep 15 21:56:01 2011 |
Mirko | Update | CDS | c1oaf check, possible shmem problem | After Jamie installed the c1oaf model (
entry 5424 ) I went and checked the intermodel
communication. |
|
|
5425
|
Thu Sep 15 20:30:52 2011 |
Mirko | Update | LSC | Plan for long term optical spec. analyzer setup | Just to give some heads up on how the setup
on the PSL table does / will look. We start
out with one of the two reflections of a |
|
|
5424
|
Thu Sep 15 20:16:15 2011 |
jamie | Update | CDS | New c1oaf model installed and running | [Jamie, Jenne, Mirko]
New c1oaf model installed
We
have installed the new c1oaf (online |
|
|
5423
|
Thu Sep 15 18:31:27 2011 |
Paul | Update | SUS | ITMY and SRM Oplev current status - comparison with ITMY |
|
|
|
5422
|
Thu Sep 15 18:24:54 2011 |
Paul | Update | SUS | ITMY and SRM Oplev current status - comparison with ITMY | Just to find out where we are currently,
I plotted the ITMY and SRM oplev spectra
along with the ETMY oplev spectra. ETMY seems |
|
|
5421
|
Thu Sep 15 18:12:21 2011 |
Jenne | Update | SUS | free swinging test in vacuum condition |
|
9x |
|
5420
|
Thu Sep 15 17:12:29 2011 |
Mirko | Update | LSC | RF modulation depth measurement | [Mirko, Kiwamu]
Put up a temp. setup on the laser
table to measure the RF modulation depths |
|
|
5419
|
Thu Sep 15 17:00:10 2011 |
Paul and Steve | Update | SUS | New ITMY and SRM oplev plan | We have made a new plan for the ITMY
and SRM oplev optical path which uses as
few optics as possible. This should help |
|
|
5418
|
Thu Sep 15 16:45:59 2011 |
Paul | Update | SUS | ITMY and SRM Oplev status | Today I worked on getting the ITMY and
SRM oplevs back in working order. I aligned
the SRM path back onto the QPD. I put excitations |
|
|
5417
|
Thu Sep 15 15:11:38 2011 |
kiwamu | Update | SUS | f2a filters on BS and PRM | The f2a
filters were newly designed and installed |
|
|
5416
|
Thu Sep 15 11:37:24 2011 |
Suresh | Update | Computer Scripts / Programs | fb restarted at Thu Sep 15 11:30:30 PDT 2011 | I changed a filter bank name (C1IOO-WFS1_PIT)
in c1ioo model reverting it to its earlier
name. Had to restart c1ioo model and |
|
|
5415
|
Thu Sep 15 07:28:08 2011 |
steve | Update | SUS | PRM damping restored |
|
|