| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
6372
|
Wed Mar 7 13:30:17 2012 |
Jim | Update | PEM | added TPs and JIMS channels to PEM front-end model | [Jim Ryan]
The PEM model has been modified now
to include a block called 'JIMS' for the |
|
|
6374
|
Wed Mar 7 15:56:36 2012 |
Koji | Update | LSC | 22/110MHz path for POP | The RF separator installed comprises of
the Minicircuits filters cascaded as in the
figure below. |
|
|
6375
|
Wed Mar 7 16:32:09 2012 |
keiko | Update | LSC | OSA | I swap an OSA at PSL and OSA at REFL.
It was because the PSL-OSA had a better resolution,
so we place this better one at REFL. The |
|
|
6376
|
Wed Mar 7 17:39:40 2012 |
keiko | Update | LSC | MICH noise budget on 5 Mar | This is the calibrated MICH noise
budget on Mar 5. There was a sharp peak at
1Hz and a blob on 3 Hz. The demod phase was |
|
|
6378
|
Wed Mar 7 19:10:06 2012 |
kiwamu | Update | LSC | REFL OSA : how the signal look like | Just a quick report on the REFL OSA.
The attached plot below shows the |
|
|
6379
|
Wed Mar 7 20:06:23 2012 |
Koji | Update | LSC | REFL OSA : how the signal look like | I'm puzzled why the 11MHz peak can be such
high considering 1.7~2 times smaller the
modulation depth. |
|
|
6380
|
Wed Mar 7 20:53:13 2012 |
keiko | Update | LSC | MICH noise budget on 5 Mar |
|
|
|
6381
|
Wed Mar 7 21:13:30 2012 |
rana | Update | DAQ | NDS2 | I noticed that NDS2 was not running
on mafalda as it should be. Instead, there
were a couple of zombie MEDMs using up 99% |
|
|
6382
|
Wed Mar 7 22:04:05 2012 |
kiwamu | Update | LSC | REFL OSA : how the signal look like | I was also wondering about the same thing,
comparing with what Mirko obtained before
with the same OSA ( |
|
|
6384
|
Wed Mar 7 23:29:28 2012 |
keiko | Update | LSC | REFL OSA observation | kiwamu, keiko
|
|
|
6385
|
Thu Mar 8 00:57:48 2012 |
keiko | Update | LSC | MICH noise budget on Mar 5, Mar 6, and old | Here is the recent two noise budgets of
MICH, with the old measurement by Jenne.
The most latest Mar 6 data is quite close |
|
|
6386
|
Thu Mar 8 04:13:12 2012 |
kiwamu | Update | LSC | update on the locking activity | [Keiko / Kiwamu]
Some updates on the locking
activity: |
|
|
6388
|
Thu Mar 8 23:37:03 2012 |
kiwamu | Update | IOO | dither Y arm dither script | I
disabled the feedback to the PZT1 PITCH in
the Y arm dithering scripts so that it won't |
|
|
6390
|
Fri Mar 9 10:44:57 2012 |
steve | Update | RF System | OSA | Optical spectrum analyzers like the Attachment
made by Coherent , Meles Griot- CVI and Spectral
Product are all discontinued. |
|
|
6393
|
Fri Mar 9 13:34:13 2012 |
keiko | Update | LSC | update on the locking activity | We tried to measure the sensing matrix
for MICH and PRCL last night. They look too
much mixed as we expect... the matrix may |
|
|
6395
|
Fri Mar 9 16:00:46 2012 |
steve | Update | Green Locking | laser emergency shut down switch replaced at the south end | Over-sized local laser emergency switch
was held by large C clamp at the south end.
This was replaced by a smaller one and it |
|
|
6397
|
Fri Mar 9 20:44:24 2012 |
Jim Lough | Update | CDS | DAQ restart with new ini file | DAQ reload/restart
was performed at about 1315 PST today. The
previous ini file was backed up as c1pem20120309.ini |
|
|
6398
|
Sat Mar 10 02:00:03 2012 |
keiko | Update | LSC | update on the locking activity | ITMX and ITMY balance for the MICH excitation
(lockin) is adjusted again. Now it's ITMx
= -0.992, ITMy = 1 for MICH (lockin output |
|
|
6400
|
Mon Mar 12 01:04:18 2012 |
keiko | Update | LSC | RAM simulation update, RAM LSC matrix | I calculated the DRMI RAM LSC
matrix with RAM and the operation point offsets.
configuration: C1 DRMI
|
|
|
6401
|
Mon Mar 12 18:57:58 2012 |
keiko | Update | LSC | RAM simulation update, RAM LSC matrix |
|
|
|
6402
|
Mon Mar 12 22:14:56 2012 |
Suresh | Update | RF System | Calibration of Demod Board Efficiency. | I have completed the calibration of the
demod board efficiencies. Here is the
schematic of the set-up. |
|
|
6403
|
Tue Mar 13 07:04:55 2012 |
kiwamu | Update | LSC | evolution of the sensing matrix in PRMI as a function of time | The
punch line is -- the sensing matrix still
looks strange in the PRMI configuration. |
|
|
6404
|
Tue Mar 13 13:28:31 2012 |
Ryan Fisher | Update | CDS | DAQ restart with new ini file | Extra note: This was the ini file that was
edited:
/cvs/cds/rtcds/caltech/c1/chans/daq/C1PEM.ini |
|
|
6405
|
Tue Mar 13 16:40:06 2012 |
kiwamu | Update | LSC | evolution of the sensing matrix in PRMI as a function of time: details | Here
I describe the measurement of the sensing
matrix. |
|
|
6406
|
Tue Mar 13 16:56:19 2012 |
kiwamu | Update | LSC | evolution of the sensing matrix in PRMI as a function of time | Next steps:
Compare the obtained sensing
matrix with an Optickle model. Particularly |
|
|
6407
|
Tue Mar 13 19:14:40 2012 |
kiwamu | Update | LSC | Noise estimatino in the REFL33Q as a MICH sensor |
A feasibility study of the REFL33Q as a MICH
sensor was coarsely performed from the point |
|
|
6409
|
Wed Mar 14 03:34:44 2012 |
kiwamu | Update | SUS | Adjustment of BS suspension output matrix : coupling from SIDE to POS | [Rana / Kiwamu]
We put some elements in the |
|
|
6410
|
Wed Mar 14 04:03:37 2012 |
kiwamu | Update | IOO | PZT1 and associate extra works | As the PZT1 has not been functional, I
have been aligning the Y arm to the input
beam instead of aligning the beam to the |
|
|
6411
|
Wed Mar 14 04:19:51 2012 |
kiwamu | Update | LSC | REFL33Q for MICH control : not good | I tried the REFL33Q for controlling
MICH in the PRMI configuration (#6407)
|
|
|
6412
|
Wed Mar 14 05:26:39 2012 |
interferomter tack force | Update | General | daytime tasks | The
following tasks need to be done in the daytime
tomorrow. |
|
|
6413
|
Wed Mar 14 10:06:26 2012 |
steve | Update | Green Locking | dichroic mirror quotes | Dichroic
mirror quotes are in the wiki.
ATF is pricy. |
|
|
6414
|
Wed Mar 14 13:16:50 2012 |
kiwamu | Update | LSC | A correction on Noise estimatino in the REFL33Q | A
correction on the previous elog about the
REFL33Q noise: |
|
|
6416
|
Wed Mar 14 14:09:01 2012 |
interferomter tack force | Update | General | daytime tasks |
|
|
|
6417
|
Wed Mar 14 16:33:20 2012 |
keiko | Update | LSC | RAM simulation / RAM pollution plot | In the last post, I showed that SRCL element
in the MICH sensor (AS55I-mich) is chaned
1% due to RAM. |
|
|
6418
|
Wed Mar 14 16:39:02 2012 |
Suresh | Update | General | REFL165 signal was not reaching demod board : Fixed |
|
|
|
6419
|
Wed Mar 14 21:01:36 2012 |
keiko | Update | LSC | evolution of the sensing matrix in PRMI as a function of time | This is the simulated signals
to compare with the original post #6403 |
|
|
6420
|
Wed Mar 14 23:02:09 2012 |
Koji | Update | LSC | Locking activity | Kiwamu and Koji
The target is to realize DRMI or
PRMI + one arm with ALS. |
|
|
6423
|
Fri Mar 16 06:17:56 2012 |
Suresh | Update | Electronics | REFL165 calibration : measurements |
These are the measurements for estimating
the amplitude of the signal recorded in the |
|
|
6424
|
Fri Mar 16 10:37:52 2012 |
Jenne | Update | Electronics | Jenne Laser |
|
|
|
6425
|
Fri Mar 16 16:01:53 2012 |
rana | Update | Electronics | REFL165 calibration : measurements | To characterize the RF V to counts
we need to know the state of the whitening
filter board. Was the filter on or off ? |
|
|
6426
|
Fri Mar 16 16:03:03 2012 |
kiwamu | Update | IOO | MC alignment servo : put some offsets in the TRANS QPD signal | The
MC alignment servo wasn't great in the last
1 hour or so as it kept disturbing the MC |
|
|
6427
|
Sun Mar 18 00:29:24 2012 |
Den | Update | PEM | sts-2 | I've turned off the power of the STS-2
readout box as it provides outputs with ~10
Volts DC offset! AA filter box works in the |
|
|
6428
|
Mon Mar 19 21:25:31 2012 |
Suresh | Update | Electronics | REFL165 calibration : measurements |
|
|
|
6429
|
Tue Mar 20 09:59:01 2012 |
steve | Update | IOO | Laser tripped off | Today is janitor day. It still does not
explain why the 2W Innolight tripped off
about an hour ago. All back to normal. |
|
|
6430
|
Tue Mar 20 16:53:48 2012 |
steve | Update | PEM | cranes maintenance & certified inspection of 2012 | Fred Goodbar of Konecrane has completed
the annual certified crane inspection and
maintenance of our cranes as required in |
|
|
6431
|
Tue Mar 20 17:50:44 2012 |
Suresh | Update | Computers | Beam Scan machine fixed | There was something wrong with the Beam
Scan PC. The mouse and screen
were not responding and the PC was asking |
|
|
6432
|
Wed Mar 21 10:31:28 2012 |
steve | Update | SAFETY | AC power to ETMY turned off | ETMY sus damping was disabled. Green locking
laser and associated electronics turned off.
Computers and power supplies turned off at |
|
|
6433
|
Wed Mar 21 11:32:47 2012 |
steve | Update | SAFETY | AC power to ETMX turned off |
|
|
|
6434
|
Wed Mar 21 19:12:27 2012 |
steve | Update | Computers | AC power back on both ends |
|
|
|
6435
|
Thu Mar 22 08:14:21 2012 |
steve | Update | Green Locking | dichroic mirror quotes with large wedge |
|
|