ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
6318
|
Fri Feb 24 19:25:43 2012 |
jamie | Update | LSC | ALS X-arm beatbox added, DAQ channels wiring normalized | I have hooked the ALS beatbox into the
c1ioo DAQ. In the process, I did some
rewiring so that the channel mapping corresponds |
|
6319
|
Fri Feb 24 23:14:09 2012 |
kiwamu | Update | CDS | tdsavg went crazy | I found that the LSCoffset script didn't
work today. The script is supposed to null
the electrical offsets in all the LSC channels. |
|
6320
|
Sat Feb 25 00:37:42 2012 |
kiwamu | Update | SUS | oplev spectra during PRMI lock | Somehow
the angular stability of the central part
have not been so great. |
|
6321
|
Sat Feb 25 14:27:26 2012 |
kiwamu | Update | LSC | glitches in the RFPD outputs | Last
night I took a closer look at the LSC analog
signals to find which components are making |
|
6322
|
Mon Feb 27 10:21:37 2012 |
steve | Update | SAFETY | safety audit tomorrow morning |
|
|
6323
|
Mon Feb 27 14:35:22 2012 |
steve | Update | SUS | oplev YAW transfer functions | The BS and the PRM have 3.3 Hz resonant
gain filters that kill the phase margins.
|
|
6324
|
Mon Feb 27 14:35:37 2012 |
Jenne | Update | Green Locking | PSL Beat Setup | Xarm is aligned for both IR and green.
Here is a photo of the beam paths
of the PSL beat setup. I want to make |
|
6325
|
Mon Feb 27 18:33:11 2012 |
jamie | Update | PSL | what to do with old PSL fast channels | It appears that the old PSL fast channels
never made it into the new DAQ system.
We need to figure out what to do with them. |
|
6326
|
Mon Feb 27 18:35:45 2012 |
Jenne | Update | Green Locking | X Beat Search | Meh. I've searched in steps of 20
counts in C1:GCX-SLOW_SERVO2_OFFSET units
(16 bit +\- 10V DAC, and 1GHz/V coeffecient |
|
6327
|
Mon Feb 27 19:04:13 2012 |
jamie | Update | CDS | spontaneous timing glitch in c1lsc IO chassis? | For some reason there appears to have been
a spontaneous timing glitch in the c1lsc
IO chassis that caused all models running |
|
6328
|
Mon Feb 27 21:26:22 2012 |
Den | Update | PEM | seis box | I did liso simulation of the circuit in
the seis box. I think that AD620 (first amplifier
in the circuit) noise might be much less |
  |
6329
|
Tue Feb 28 11:20:51 2012 |
steve | Update | SAFETY | safety audit 2012 | Correction list by visiting safety committee,
Haick Issaian is not shown:
1, update laser, crane operator |
|
6330
|
Tue Feb 28 12:00:54 2012 |
kiwamu | Update | LSC | installed anti-whitening filters | I
found that none of the filter banks in the
LSC input signals have the precise anti-whitening |
|
6331
|
Tue Feb 28 15:48:32 2012 |
kiwamu | Update | LSC | installed anti-whitening filters | I installed the rest of the precise
anti-whitening filters. Now all of the LSC
sensors have the right filters. |
|
6332
|
Tue Feb 28 16:12:59 2012 |
Den | Update | Adaptive Filtering | lunch talk | Just to be clear what I said at the
meeting, I write all this down here. Adaptive
filtering of real signals (MC_F and GUR1_X) |
 |
6333
|
Tue Feb 28 16:31:08 2012 |
Suresh | Update | Electronics | REFL165 repair: Characterization | The transfer function and current noise
were measured. The location of the
peak shifts with the amount of incident light |
 |
6334
|
Tue Feb 28 16:39:25 2012 |
kiwamu | Update | LSC | MICH and PRCL signals in a simulation | I briefly ran a Optickle code to see
how the PRC macroscopic length screws up
the sensing matrix in the PRMI configuration. |
 |
6335
|
Tue Feb 28 16:44:56 2012 |
rana | Update | LSC | MICH and PRCL signals in a simulation |
Like
I said, this is possible if you fail to set |
|
6336
|
Tue Feb 28 20:49:33 2012 |
kiwamu | Update | LSC | insalling OSA | I am installing an OSA on the AP table
and it's ongoing.
I am leaving some stuff scattered |
|
6337
|
Wed Feb 29 00:22:35 2012 |
Suresh | Update | Electronics | REFL165 repair: Installed on the AS table | 1) The REFL165 has been replaced onto the
AS table.
2) When the PD interface cable is |
|
6338
|
Wed Feb 29 01:02:06 2012 |
Den | Update | PEM | seis box measured | I've measured the input signal to the seismic
box from seismometer Guralp 1. The spectrum
of the signal in the "input +" |
   |
6339
|
Wed Feb 29 01:14:40 2012 |
Suresh | Update | Electronics | REFL165 repair: Characterization |
|
|
6340
|
Wed Feb 29 04:23:14 2012 |
kiwamu | Update | LSC | REFL OSA installed | I
placed the OSA (Optical Spectrum Analyzer)
on the AP table and this OSA will monitor |
|
6341
|
Wed Feb 29 17:32:11 2012 |
Mike | Update | Computers | PyNDS and a Plot |
|
|
6342
|
Wed Feb 29 20:27:00 2012 |
Jenne | Update | Green Locking | X green beat - found it! | Found it!
The actual temperature of the Xend |
|
6343
|
Thu Mar 1 00:05:23 2012 |
Den | Update | PEM | seis box noise | I've moved GUR1 seismometer from MC2 to
the working tables in order not to disturb
the MC while working with the seismometer |
 |
6344
|
Thu Mar 1 09:26:50 2012 |
steve | Update | SUS | SOS baffle plates are ready | Green
welding glass 7" x 9"
shade #14 with 40 mm hole and mounting fixtures |
|
6345
|
Thu Mar 1 21:48:34 2012 |
Den | Update | PEM | seis box noise |
|
 |
6346
|
Fri Mar 2 11:05:28 2012 |
Den | Update | PEM | seis box gain | I've replaced R2 resistor that adjusts
the gain of the AD620 amplifier. Previous
value 5491Ohm, new value 464Ohm, so the gain |
   |
6347
|
Fri Mar 2 16:05:52 2012 |
Den | Update | SAFETY | laser safety | Today I've attended the laser safety seminar. |
|
6349
|
Fri Mar 2 18:55:06 2012 |
Den | Update | PEM | seis box | I've put the seismometer box back to the
1x1, Guralp is back under MC2. When the seismometer
is not plugged in, the noise is |
|
6350
|
Mon Mar 5 03:22:54 2012 |
kiwamu | Update | PSL | PMC realigned | I realigned the steering mirrors for the
PMC. The trans value went up from 0.79 to
0.83. |
|
6351
|
Mon Mar 5 03:50:49 2012 |
kiwamu | Update | IOO | PZT1 PITCH railing | PZT1
started railing in the pitch direction and
because of this TRY doesn't go more than |
|
6352
|
Mon Mar 5 05:39:36 2012 |
kiwamu | Update | LSC | REFL OSA installed | The
OSA for the REFL beam is now fully functional.
|
|
6354
|
Mon Mar 5 13:11:06 2012 |
kiwamu | Update | LSC | installed a long BNC cable for REFL OSA | A
long BNC cable was installed and now the
REFL OSA signal is happily shown on an oscilloscope |
|
6355
|
Mon Mar 5 14:10:35 2012 |
kiwamu | Update | LSC | power budget on the AP table | I
checked the laser powers on the AP table
and confirmed that their powers are low enough |
|
6356
|
Mon Mar 5 15:15:15 2012 |
Den | Update | PEM | RCG | [Alex / Den]
I've encountered a problem that C1:PEM-SEIS_GUR1_X_IN1
is saved in the int format. It turned out |
|
6357
|
Mon Mar 5 17:07:58 2012 |
kiwamu | Update | IOO | realigned MC | I
have slightly shifted the MC beam pointing
to relax the PZT1 PITCH. As a result the |
|
6358
|
Mon Mar 5 18:12:00 2012 |
Keiko | Update | LSC | RAM simulation update | I wrote an RAM simulation script
... it calculates the LSC signal offset and
the operation point offset depending on the |
 |
6359
|
Mon Mar 5 20:31:33 2012 |
Koji | Update | LSC | 22/110MHz path for POP | This a kind of self record...
We need an RF setup at POP to extract
22 and 110 MHz components separately. |
|
6361
|
Tue Mar 6 00:13:20 2012 |
keiko | Update | LSC | ASI signal offset | |
|
6362
|
Tue Mar 6 01:35:03 2012 |
kiwamu | Update | LSC | MICH characterization | [Keiko / Kiwamu]
Update on the MICH characterization:
The OSAs weren't so great |
|
6363
|
Tue Mar 6 15:22:02 2012 |
Keiko | Update | LSC | RAM simulation update |
|
|
6365
|
Tue Mar 6 16:17:36 2012 |
Jenne | Update | SUS | SUS matrix diagonalization status | Has default inmat:
PRM, ITMX
Has fancy inmat: |
|
6366
|
Tue Mar 6 22:23:04 2012 |
Koji | Update | LSC | 22/110MHz path for POP |
As par Kiwamu's request, RF
filters for POP22 and POP110 were installed. |
|
6367
|
Tue Mar 6 23:14:38 2012 |
rana | Update | SUS | Optical Lever had bad filters | We found that that bounce (16.1 Hz)
and roll (23.5 Hz) modes on the ITMX were
much higher than on the ITMY. After some |
|
6368
|
Tue Mar 6 23:37:31 2012 |
keiko | Update | SUS | MICH noise budget - SUS check | Here are the OSEM spectrum of MICH suspensions
(BS, IX, IY). Bounce and Roll modes are shown
on 16 and 23 Hz. The filters for them has |
6x |
6369
|
Wed Mar 7 04:08:48 2012 |
kiwamu | Update | SUS | BS SIDE gain was too low | The
BS SIDE damping gain seemed too low. The
gain had been 5 while the rest of the suspensions |
|
6370
|
Wed Mar 7 11:20:23 2012 |
steve | Update | SUS | oplev qpd offsets zeroed | All oplev qpd quadrons were zeroed by offset
in blocked dark condition. |
|
6371
|
Wed Mar 7 11:44:29 2012 |
Jenne | Update | Green Locking | Xgreen beatnote cable made, laid | The Xgreen PD now has a cable going over
to the beatbox. Once beatbox characterization
is done I can re-find the beat, and we can |
|